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1685 CROSSTOWN BOULEVARD N.W. • ANDOVER, MINNESOTA 55304 • (763) 755 -5100
FAX (763) 755 -8923 • WWW.CI.ANDOVER.MN.US
Andover Open Space Advisory Commission
Meeting Agenda
October 14, 2015
Andover City Hall
Conference Rooms A & B
7.00 p.m.
1. Call to Order
2. Resident Forum
3. Approval of Minutes: September 9, 2015 Regular Meeting
4. Open Space Ecological Field Assessment and Vegetation Surveys
5. 2016 Meeting Schedule — Select Dates
6. Other Business
7. Adjournment
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1685 CROSSTOWN BOULEVARD N.W. • ANDOVER, MINNESOTA 55304 • (763) 755 -5100
FAX (763) 755 -8923 • WWW.CI.ANDOVER.MN.US
TO: Andover Open Space Advisory Commission
FROM: David L. Carlberg, Community Development Director
SUBJECT: Approval of Minutes — September 9, 2015, Regular Meeting
DATE: October 14, 2015
INTRODUCTION
The Open Space Advisory Commission is asked to review and approve the
minutes from the September 9, 2015, Regular Meeting.
DISCUSSION
Please share any changes to the minutes at the meeting.
ACTION REQUESTED
A motion, second, and vote are necessary to approve the minutes.
Respectfully submitted,
David L. Carlberg
Attachment
September 9, 2015 meeting minutes
REGULAR ANDOVER OPEN SPACE ADVISORY COMMISSION MEETING
SEPTEMBER 9, 2015
MINUTES
The Regular Meeting of the Andover Open Space Advisory Commission was called to order by
Chairperson Gretchen Sabel at 7:00 p.m., at the Andover City Hall, 1685 Crosstown Boulevard
NW, Andover, Minnesota.
Commissioners present: Aaron Jarson, Jim Myers, Jim Olson (arrived at 7:05 p.m.), and
Suzanne Van Hecke
Commissioners absent: Kim Kovich and Bruce Perry
Also present: David Carlberg, Community Development Director
RESIDENT FORUM
No one wished to address the Commission.
ANDOVER FAMILY FUN FEST RECAP
Commissioner Jarson stated that it seemed there was more interest from residents than in past
years.
Mr. Carlberg stated that Commissioner Perry and his wife were busy during their staffed time
and commented that more people were interested in open space.
Chairperson Sabel asked who runs Family Fun Fest.
Mr. Carlberg stated that staff used to run the event but the event is now run by a committee.
Commissioner Olson arrived.
APPROVAL OFMINUTES — July 8, 2015 Regular Meeting and July 22, 2015 Special Meeting
Motion by Commissioner Van Hecke, Second by Chairperson Sabel, to approve the regular
meeting minutes of July 8, 2015. Motion passed 4 -0 ( Jarson present).
Motion by Commissioner Jarson, Second by Commissioner Olson, to approve the special
meeting minutes of July 22, 2015. Motion passed 5 -0.
OPEN SPACE ACQUISITION UPDATE
Mr. Carlberg stated that this will be his last report on acquisitions. He reported that the closing
of the Dalske property occurred on August 26`h. He noted that there has been concern from
neighboring property owners that visitors could wander onto their property. He provided
additional information noting that no hunting signs were placed along the north side of the
Dalske Woodlands property, a survey of the property will be done in October, marker boundaries
will be installed, and the rules signs are being manufactured right now for installation. He stated
that an address has been created for the property, 400 181st Avenue NW. He stated that there
was a blanket easement that had been across the property from Great River Energy that has since
been removed. He stated that staff is also working with the ecological survey consultant for a
proposal to prepare an ecological plant survey of the property.
Regular Open Space Advisory Commission Meeting
Minutes — September 9, 2015
Page 2
FUTURE WORK PLANIMEETING SCHEDULE OF THE OPEN SPACE ADVISORY
COMMISSION
Mr. Carlberg reported that Commissioner Perry has resigned from the Commission and that he
appreciates all the work that has been done by the Commission. He stated that Commissioner
Perry's term expires at the end of this year and his recommendation to the Council is to leave the
position vacant until interviews are completed for the next cycle. He noted that at that time the
scope of the Commission will also be better known.
Chairperson Sabel stated that the Commission had discussed meeting quarterly after this point.
Mr. Carlberg stated that he already has the consultant slated to attend the meeting on October
141h at 7:00 p.m. to present the results of the ecological surveys of the open space properties. He
stated that he will also have the City's Natural Resource Technician attend the meeting as he will
be more involved in the management plan aspect. He stated that the scope of the Commission
would be to provide input on the management plans of the open space areas.
Commissioner Van Hecke questioned if the Commission would be able to meet on their own to
tour the open space areas.
Mr. Carlberg stated that the group would still be an advisory body to the Council and therefore
no more than three Commissioners should meet together otherwise they would be in violation of
the open meeting laws.
Chairperson Sabel stated that the Commission could meet quarterly and the Commission could
setup a schedule of when groups of three could tour the open space areas between meetings.
Mr. Carlberg stated that the Commission could meet earlier than the scheduled quarterly meeting
time at an open space area to tour that area prior to the regular meeting at City Hall, similar to
what the group has done in the past. The Commissioners agreed. He confirmed that the
recommendation of the Commission to the Council would be to continue to meet quarterly to
provide input on the management of the open space areas. He stated that the next meeting would
be on October 14`h and the group would then begin to meet quarterly after that time starting in
2016.
OTHER B USINESS
Commissioner Van Hecke stated that she does have photographs of the open space tours
available for Commissioners that are interested.
Commissioner Jarson stated that it would be nice to have pictures of the open space areas on the
website that are available for residents to view.
The Commission discussed ideas for a poster that could be placed in the kiosk.
Regular Open Space Advisory Commission Meeting
Minutes — September 9, 2015
Page 3
Mr. Carlberg displayed a photograph of the new rules sign that is on display at North Woods
Preserve and noted that the plan would be to install the sign at the other open space areas.
a. Next Meeting: October 14, 2015
Noted.
ADJOURNMENT
Motion by Commissioner Olson, Second by Commissioner Van Hecke, to adjourn the meeting at
7:48 p.m. Motion passed 6 -0.
Respectfully submitted,
David Carlberg
Community Development Director
Drafted by:
Amanda Staple, Recording Secretary
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1685 CROSSTOWN BOULEVARD N.W. • ANDOVER, MINNESOTA 55304 . (763) 755 -5100
FAX (763) 755 -8923 • WWW.CI.ANDOVER.MN.US
TO: Andover Open Space Advisory Commission
FROM: David L. Carlberg, Community Development Director
SUBJECT: Open Space Ecological Field Assessment and Vegetation
Surveys
DATE: October 14, 2015
INTRODUCTION
The Commission is asked to receive a presentation from Jason Husveth of
Critical Connections Ecological Services, Inc. on the Ecological Field
Assessment and Vegetation Surveys for the Martin's Meadows, North
Woods Preserve and Maple View Open Space properties.
ACTION REQUESTED
Receive presentation and provide direction as to any changes the
Commission deems necessary to the attached Ecological Assessment and
Surveys.
Attachments
Ecological Assessment and Survey of Martin's Meadows
Ecological Assessment and Survey of North Woods Preserve
Ecological Assessment and Survey of Maple View
Respectfully submitted,
David L. Carlberg
City of Andover
Ecological Assessment and Survey
Martin's Meadows
Township 32 North, Range 24 West, Section 07
Andover, Anoka County, Minnesota
October 6, 2015
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Critical Connections Ecological Services, Inc.
21150 Ozark Trail
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City of Andover - Ecological Assessment of Martin's Meadows Open Space
Critical Connections Ecological Services, Inc.
Final Report
October 6, 2015
Introduction
Critical Connections Ecological Services, Inc. (CCES) was retained by the City of Andover (City) to conduct
an ecological assessment and vegetative survey of Martin's Meadows, a City owned open space.
Martins Meadows is approximately 54 -acres in size and is located along the Rum River (see Appendix A,
Figure 1). The western twelve acres of Martin's Meadows was dedicated to the City as park land with
the Grow Oak View Estates plat in 1977 and is classified as City park land. The City purchased the
remainder of the acreage, now City open space, in 2009 from the Luedtke Family.
Martin's Meadows is located within the Anoka Sand Plain Subsection of the Minnesota and Northeast
Iowa Morainal (MIM) Section and is within the Eastern Broadleaf Forest Province of Minnesota. The
Anoka Sand Plain Subsection mainly consists of flat, sandy lake plains and terraces. Topography of the
area is gently rolling. Soils are derived primary from fine sands and most are excessively drained. There
are areas of poorly drained soils which support mesic to wet plant community types.
Martin's Meadows exhibits a variety of plant community types including: dry prairies, oak woodlands,
mesic oak woodlands, floodplain forests, wet meadows, and shrub carrs, as well as other small
inclusions. This variety of plant community types provides habitat for a number of plant and animal
species, as well as a variety of unique natural features.
The goals and objectives of this project were as follows:
1. Complete early and late season botanical surveys in an effort to classify native plant community
types within the City owned open space.
2. Identify, delineate, and map in a GIS based format all plant community types identified within
Martin's Meadows.
3. Detect and document any species listed by the State of Minnesota as Endangered, Threatened,
or Special Concern.
4. Identify any unique or sensitive priority natural features within the open space.
5. Provide initial management recommendations specific to the site based on the field
assessments completed as part of this project.
Project Methodology
Gathering of Site Specific Information
To begin this project, CCES first compiled existing and relevant information associated with the site
including GIS -based data layers such as recent aerial photographs (true color and infrared), 10 -foot
contours and LiDAR topographic data, soils information, and known rare species locations (if present).
Using available desktop information, CCES created GIS -based shapefiles of proposed plant community
boundaries which would likely be encountered on site. The draft boundaries were to be field verified
and edited during the site visits.
Page 1 of 13
City of Andover - Ecological Assessment of Martin's Meadows Open Space
Critical Connections Ecological Services, Inc.
Final Report
October 6, 2015
Using these available data, CCES generated field maps for Martin's Meadows which were printed at a
1:3,000 scale. These field maps were utilized for note taking as well as for delineating plant community
types during the field survey portions of this project. Generated field maps contained the project
boundaries, contour lines, draft delineations of proposed plant community boundaries, as well as soil
types. Field maps helped to guide the site survey process to ensure all native plant communities and
unique areas of the site were evaluated in detail
Field Surveys
CCES visited Martin's Meadows on three separate occasions during the 2015 growing season. Field visit
dates were scheduled based on plant phenology to ensure any potential rare species could be detected
during the visits. Field dates were also scheduled to ensure plant community types could be accurately
classified based on dominant vegetation during different times during the growing season.
Each visit to the site included a floristic inventory of dominant vegetation which was completed through
a targeted meander survey effort. When areas with a higher potential to support rare or unique
features were encountered, a more focused and detailed survey effort was completed in order to detect
any inconspicuous, rare, or otherwise unique species.
Native Plant Community (NPC) classification work was also competed for the entire site using the
Minnesota DNR's Field Guide to the Native Plant Communities of Minnesota: The Eastern Broadleaf
Forest Province (2005). The classification is hierarchical, with vegetation units described at levels
ranging from broad landscape -scale ecological systems to local communities. The classification system
is driven by plant species composition and was developed from analysis of extensive field plot data. The
classification relates the vegetation units to geography and to important environmental conditions and
processes. Plant communities located within Martin's Meadows were classified to the NPC Type level.
Additional information on the Minnesota DNR's Native Plant Community Classification System can be
found by visiting the following website: http: / /www.dnr. state .mn.us /npc /classification.htm1.
CCES ecologists also assigned a plant community quality ranking and noted the presence of any invasive
plant species. Plant community quality rankings range from an A ranking through a D ranking. An "A"
rank would indicate an excellent quality plant community with no disturbance and natural processes
intact. A "B" rank would indicate a good quality plant community with natural processes intact, and
minimal disturbances by humans and exotic species. A "C" rank would indicate a moderate quality plant
community with obvious past disturbance, but is still recognizable as a native plant community. A "D"
rank indicates a poor quality natural community with some natives present but is highly altered or
disturbed.
CCES carefully surveyed for the presence of any State - listed, rare species whenever unique habitats with
the potential to support rare species were encountered. CCES also noted the occurrence of invasive or
aggressive non - native plant species which may be targeted for future management.
Page 2 of 13
City of Andover - Ecological Assessment of Martin's Meadows Open Space
Critical Connections Ecological Services, Inc.
Final Report
October 6, 2015
During each site visit, CCES also collected high resolution digital photographs of the site for use by land
managers. Select photographs are provided in this report.
Project Results:
Native Plant Community Mapping and Descriptions:
CCES ecologists identified and mapped a total of six (6) native plant community types within Martin's
Meadows. A figure depicting the location and extent of each of these plant community types can be
found in Appendix A, Figure 2. Plant community quality rankings are also provided in Appendix A,
Figure 3. Below, a short description of each plant community type documented within the City open
space is provided. Dominant species in each community are listed, a full list of dominant species can be
found in Appendix B.
Southern Dry -Mesic Oak (Maple) Woodland - FDs37
Approximately fourteen and a half (14.5) acres within Martin's Meadows were classified as Southern
Dry-Mesic Oak (Maple) Woodland. This native plant community type was documented in upland areas
with dry, sandy soils. Dominant species included Quercus rubro (red oak), Quercus marcrocorpo (bur
oak), Prunus serotino (black cherry), Zonthoxylum omericanum (prickly ash), Cornus rocemoso (grey
dogwood), Rubus idoeus (red raspberry), Rubus allegheniensis (tall blackberry), Rhamnus cothortico
(common buckthorn), Corylus americans (American hazelnut), Juniperus virginiona (eastern red cedar),
Galium triflorum (Sweet- scented bedstraw), Desmodium glutinosum (pointed - leaved tick trefoil), Carex
rodiata (eastern star sedge) Carex deweyana (Dewey's sedge), Carex pensylvanica (Pennsylvania sedge),
Toxicodendron radicans (poison ivy), Maianthemum canadense (Canada mayflower), and Vitis riparia
(riverbank grape).
Southern Mesic Oak- Basswood Forest - MHs38
Approximately nine (9) acres within Martin's Meadows were classified as Southern Mesic Oak - Basswood
Forest (MHs38). This native plant community type was documented in upland areas with 6 -12 percent
slopes on Sartell Series sandy soils. Dominant plant species included Tilio americans (basswood),
Quercus rubro (red oak), Ostrya virginiona (ironwood), Quercus macrocarpa (bur oak), Froxinus
pennsylvonica (green ash), Ulmus americana (American elm), Rhamnus cothortico (common buckthorn),
Hydrophyllum virginianum (Virginia waterleaf), Geranium mcculatum (wild geranium), Desmodium
glutinosum (pointed tick trefoil), Geum canadense (white avens), Gallium aparine (cleavers), Elymus
hystrix (bottlebrush grass), Carex blanda (charming sedge), Carex pensylvonico (Pennsylvania sedge),
Carex rodiata (eastern star sedge), and Athyrium filix- femina (lady fern).
Southern Floodplain Forest - FFs68
Approximately nine (9) acres within Martin's Meadows were classified as Southern Floodplain Forest
(FFs68). This native plant community type was located along the Rum River on alluvial, frequently
Page 3 of 13
City of Andover - Ecological Assessment of Martin's Meadows Open Space
Critical Connections Ecological Services, Inc.
Final Report
October 6, 2015
flooded soils. Soils are characteristically level and poorly drained. Dominant species recorded within
the floodplain forest included Acer soccharinum (silver maple), Acer negundo (boxelder), Zanthoxylum
americanum (prickly ash), Elymus virginicus (Virginia wildrye), Leersia oryzoides (rice cut grass), Phaloris
orundinacea (reed canary grass) Carex lupulina (hop umbrella sedge), Carex tenera (remote sedge),
Loportea canadensis (wood nettle), Pileo pumila (clearweed), Impatiens copensis (jewelweed),
Rudbeckio laciniata (tall coneflower), Boehmeria cylindrico (false nettle), Penthorum sedoides (ditch
stonecrop), Onoclea sensibilis (sensitive fern), Lobelia cordinalis (Cardinal flower),Platonthera psycodes
(purple fringed orchid), Echinocystis lobato (wild cucumber), and Vitis riporio (riverbank grape).
Southern Dry Prairie - UPs13
Approximately five (5) acres within Martin's Meadow's were classified as Southern Dry Prairie (UPs13).
This native plant community type was generally located on steeper slopes with a west, southwest facing
aspect. A portion of this plant community is located under overhead utility lines. Soils were classified as
Sartell fine sands on 12 -24 percent slopes which are excessively drained. Dominant species documented
were typical of disturbed, dry prairies and included Stipa sportea (porcupine grass), Koeleria pyromidoto
(Junegrass), Bouteloua hirsuto (hairy grama), Cyperus schweinitzii (Schweinitz's flatsedge), Solidago
ridgida (stiff goldenrod), Viola pedatifida (birdsfoot violet), Helionthus helionthoides (stiff sunflower)
Asclepias tuberoso (butterfly milkweed), Monarda fistulosa (wild bergamot), Geum triflorum (prairie
smoke), Solidago canadensis (canada goldenrod), Melilotus officinalis (yellow sweet clover), Berteroa
incana (hoary alyssum), Artemisia compestris (tall wormwood), Artemisio ludoviciana (prairie sage),
Verboscum thapsus (common mullein), Trodescantia bracteoto (long - bracted spiderwort), Juniperus
virginiana (eastern red cedar), Rhus globro (smooth sumac), and Quercus macrocarpa (bur oak - shrubs).
Southern Wet Aspen Forest - WFs55
Approximately eight (8) acres within Martin's Meadows have been classified as Southern Wet Aspen
Forest (WFs55). This plant community type was found in low -lying areas on poorly drained Markey
Muck soils, Isanti fine sandy loam, or Lino Loamy fine sand. Dominant species included Populus
temuloides (quaking aspen), Zanthoxylum americanum (prickly ash), Rhamnus cothortica (common
buckthorn), Acer negundo (boxelder), Sambucus racemoso (red elderberry), Corylus americana
(American hazelnut), Froxinus pennsylvonica (green ash), Urtica dioica (stinging nettle), Agastache
schrophulariifolia (purple giant hyssop), Frogario virginiano (wild strawberry), Cicuta moculoto (water
hemlock), Rumex orbiculatus (greater water dock), Onoclea sensibilis (sensitive fern), Mimulus ringens
(monkey flower), Lysimachia punctata (yellow loosetrife), Verbena hostoto (blue vervain), Carex
vesicoria (tufted lake sedge), Carex stipata (awlfruit sedge), Carex tribuloides (blunt broom sedge), Carex
stricto (tussock sedge), and Carex bebbii (Bebb's sedge),
Northern Wet Meadow /Carr - WMn82
Approximately nine (9) acres within Martin's Meadows have been classified as Northern Wet
Meadow /Carr (WMn82). Wet meadow communities were found in low -lying areas on poorly drained
Page 4 of 13
City of Andover - Ecological Assessment of Martin's Meadows Open Space
Critical Connections Ecological Services, Inc.
Final Report
October 6, 1015
Markey Mucks and Rifle Mucks. Dominant species recorded included Carex sortwelld (Sartwell's sedge),
Carex stricta (tussock sedge), Carex lacustris (lake sedge), Phaloris arundinacea (reed canary grass),
Colomogrostis canodensis (Canada bluejoint), Glycerio grandis (giant manna grass), Solidago gigantea
(giant goldenrod), Asclepias incarnate (swamp milkweed), Thelypteris polustris (northern marsh fern),
Cicuto maculate (water hemlock), Eupatorium purpureum (purple Joe -pye weed), Symphyotrichum
ericoides (heath aster), Polygonum amphibium (water smartweed), Spiroea tomentosa (steeplebush),
Solix amygdaloides (peach - leaved willow), and Solix petioloris (slender - leaved willow).
Rare Species and Sensitive Features
Buteo lineatus (Red Shouldered Hawk; MN- Special Concern Species)
CCES ecologists noted one State - listed species while completing inventory and assessment work at
Martin's Meadows. One individual of the Minnesota Special Concern species Buteo lineatus (red -
shouldered hawk) was detected in the Floodplain Forest along the Rum River. According to the
Minnesota DNR's Rare Species Guide, "the red - shouldered hawk is a medium -sized Buteo with relatively
long wings. The rufous (reddish brown) shoulder patches, which give the species its name, are diagnostic
when visible, but only present in adults. In flight, the red - shouldered hawk is best distinguished by its
black- and -white checkered flight feathers and the whitish crescent at the base of the primaries. The
adult's underparts and wing linings are extensively barred with rufous. The red - shouldered hawk's tail
has alternating black and white bands, in which the white bands are narrower than the black. This
feature distinguishes it from the similar broad - winged hawk ( Buteo platypterus), which has white tail
bands that are wider and fewer in number. Immature red - shouldered hawks are very difficult to
distinguish from immature broad - winged hawks." CCES ecologists positively identified the red -
shouldered hawk at Martin's Meadows by its distinct call, as well as through visual observations of the
above mentioned distinguishing morphological features.
Red - shouldered hawks are most commonly found in large tracts of mature deciduous forest with
scattered wetland openings. Suitable habitat typically occurs in uplands with diverse topography
characterized by numerous small hills, ridges, and depressional wetlands or small lakes. Red - shouldered
hawks also frequent mature floodplain forests. Researchers have found that nesting sites include high,
thick canopies and trees with large diameters (McLeod and Andersen 1996). Bosakowski and Smith
(1997) found that the number of red - shouldered hawks increased with increasing size of wilderness
areas. A mosaic of appropriate habitat types are found throughout Martin's Meadows.
Retaining large amounts of mature deciduous forest and limiting the amount of non - forest are both
important in promoting nesting and occupancy by red - shouldered hawks in central Minnesota. Land
managers hoping to promote occupancy by red - shouldered hawks should avoid creating large clear -cut
areas and instead use management practices that preserve the characteristics of forested landscapes
Page 5 of 13
City of Andover - Ecological Assessment of Martin's Meadows Open Space
Critical Connections Ecological Services, Inc.
Final Report
October 6, 1015
(e.g., thinning and light- selection cuts). Within forested landscapes, there may be potential for small
areas of intense timber harvest, as long as sufficient amounts of mature forest (>50% of the landscape),
particularly hardwoods, remain (Moorman and Chapman 1996; Henneman 2006). Forest cover of
sufficient maturity and extent must be maintained in close proximity to wetland openings if red -
shouldered hawks are to persist in an area. Canopy closure also appears to be a critical nest -site
characteristic, and some studies recommend maintaining a canopy closure of>70 %for nesting habitat.
Forest clearing can cause red - shouldered hawks to be out - competed by red - tailed hawks (Moorman and
Chapman 1996). Red - shouldered hawks are also sensitive to human disturbance, so activity within 300
m (984 ft.) of nest sites should be minimized during the breeding season (April 1 to June 30). Because
red - shouldered hawks often nest in the same site as in past years, retention of nest trees may facilitate
subsequent nesting on a site. Red - shouldered hawk nesting sites were not observed by CCES during the
2015 assessment period.
Lobelia cardinalis (Cardinal Flower), Range Extension
A single large population with many individuals of Lobelia cardinalis (cardinal flower) was detected
within the Floodplain Forest on the shore of the Rum River at the northern edge of the open space
property. While this species is not considered to be rare or listed in the State of Minnesota, it is
generally known to occur only on the eastern boundary of the State along the St. Croix River. Should
this population be confirmed, it will be one of only two known locations in Anoka County. Furthermore,
this Anoka County record would be a northern and western range extension for the species' known
range in North America.
Cardinal flower is a native perennial plant. It prefers part shade to sun and moist, sandy, loamy soil.
Mature plants can reach a height of one to three feet. It often occurs along shorelines of rivers.
Cardinal flowers exhibit long flower stalks with vibrant crimson red flowers. The flowering period is
between July and September.
Carex assiniboinensis (Assiniboine Sedge), New Anoka County Record
A single population of Assiniboine sedge was detected in the southern mesic oak - basswood forest on a
northwest facing slope along a drainage way. While this sedge is not listed as rare in the State, it has not
yet been detected in Anoka County. It does occur in Chisago County as well as several counties to the
south of Anoka County. Assiniboine sedge is rare in the state of Wisconsin and occurs only in a few
states in the upper Midwest, including the Dakota's, Wisconsin, Michigan and Minnesota.
Assiniboine sedge prefers mesic hardwood forest habitat types, and moist loam soils. It is a perennial
species and can reproduce and spread through underground rhizomes, through above ground stolons,
or by seed. Carex assiniboinesis exhibits some tip- rooting stolons which can be two meters in length (a
rather unique and distinguishing character for the genus Carex).
Page 6 of 13
City of Andover -Ecological Assessment of Martin's Meadows Open Space
Critical Connections Ecological Services, Inc.
Final Report
October 6, 2015
Minnesota Native Orchids:
CCES ecologists detected populations of two species of Minnesota native orchids within the Martin's
Meadows Open Space. The two species included Platanthero psycodes (small purple fringed orchid),
and Liparis liliifolia (Lily - leaved twayblade). P. psycodes was detected in a Northern Wet Meadow /Carr
(WMn82) near the Rum River. L. liliifolia was detected in a Southern Wet Aspen Forest (WFs55) in
shaded openings.
P. psycodes generally prefers wet woods, lakes shores, meadows or shrub thickets. It flowers July
through August and has vibrant to pale purple flowers. It is a relatively conspicuous orchid and is often
seen along roadsides, especially when roads dissect a wetland community. Purple finged orchid is
pollinated by butterflies and moths (Welby Smith, 1993).
Liparis Iildfolia prefers mature mesic moist oak or mixed deciduous forest. It seems to prefer acidic soil
and was found amongst eastern red cedar at Martin's Meadows. It flowers June through July and
exhibits a flower with a purple lip. While not rare in the State, Lily- leaved twayblade is a rather
infrequent plant species (Welby Smith, 2003), and is currently tracked by the Minnesota DNR.
Discussion
Management Recommendations:
During each field visit CCES ecologist noted areas of the site in need of future land management
activities. The following are management recommendations for Martin's Meadow's:
1. Monitoring and control of non - native /invasive plant species: while completing the site
assessment work, CCES ecologists noted a number of non - native and invasive plant species
which should be targeted for treatment in the near future to prevent further spread and
displacement of native plant species. Invasive plant species noted within Martin's Meadows
included: Rhamnus cathartics (common buckthorn), Zanthoxylum omericonum (prickly ash),
Phaloris orundinocea (reed canary grass), Melilotus olba (white sweet clover), Melilotus
officinalis (yellow sweet clover), and Berteroo incono (hoary alyssum). Common buckthorn and
prickly ash were common throughout the wooded and forested native plant community types.
Prickly ash and buckthorn could be controlled through manual cutting and a targeted
application of a woody specific herbicide. Sweet clover and hoary alyssum were found in dry
prairie openings. In populations with small numbers of these two prairie invasives, individuals
could be hand pulled, bagged and removed from the site. In areas with more dense
infestations, mowing followed by herbicide applications and native plant community restoration
efforts (prescribed burning and seeding) would be necessary. Reed canary grass was confined to
moist areas with poorly drained soils in wetland plant community types and within the
floodplain forest. Removal of reed canary grass would require a long term plan for its control as
Page 7 of 13
City of Andover -Ecological Assessment of Martin's Meadows Open Space
Critical Connections Ecological Services, Inc.
Final Report
October 6, 2015
well as the implementation of follow -up restoration activities. A long -term commitment (of five
to ten years) to this effort would be needed to ensure success. Poison Ivy, a noxious weed was
also documented within several of the wooded native plant communities. Poison ivy
(Toxicodendron rodicons), while native to Minnesota, is classified as State Prohibited as it can be
harmful to humans. Poison ivy populations could be toxic and problematic to park users and
should be targeted for management and /or removal due to this potential threat.
2. In addition to invasive species control, all native plant community types within Martin's
Meadows would benefit from plant community management and restoration activities. A lack
of natural disturbance and management has resulted in overgrown plant communities with
reduced native plant diversity. Reintroduction of natural processes through prescribed fire,
winter mowing or woody species, and overseeding with appropriate native species would be
essential to maintain and /or elevate native species diversity and improve the overall ecological
health of this City owned open space. Reintroduction of appropriate native species through
planting of live material (or seeding) would also be beneficial in several areas of the preserve.
3. Issues related to stream bank erosion were also noted within Martin's Meadows. Areas
denuded of vegetation along the Rum River are susceptible to erosion and cutting during times
of high water. Restoration and management practices that stabilize and restore the natural
streambank within the open space along the rum river would help prevent further erosion and
bank cutting. Additional areas of erosion and sediment movement were observed along small
streams draining to the Rum River. Stabilization and streambank work could be completed
along these channels to stabilize the banks and prevent movement of sediment into the Rum
River.
4. Oak Wilt was detected within the Southern Dry -Mesic Oak (Maple) Woodland (FDs37) native
plant community. Oak wilt is caused by the fungus Ceratocystis fagaceorum, and may cause
additional problems for the open space in the future as there is a heavy oak component within
the preserve. Red Oak (Quercus rubra) is most susceptible to the fungus within the preserve,
but bur oak (Quercus macrocorpo) and white oak (Quercus albo) are also susceptible to the
fungus. If detected early, Oak Wilt can be controlled with mechanical root cutting techniques,
making monitoring of the infestation an important first step in the management or Oak Wilt.
5. A final management consideration would be to monitor the single population of the State -
special concern species Buteo lineatus (Red - shouldered Hawk) that was detected within Martin's
Meadow. Monitoring of the population will help to ensure the long -term viability of the
population. Habitat needs of this species should be considered when developing restoration
implementation plans and when installing new trails, amenities, or park features.
Page 8 of 13
City of Andover - Ecological Assessment of Martin's Meadows Open Space
Critical Connections Ecological Services, Inc.
Final Report
October 6, 2015
Summary and Next Steps:
Martin's Meadows contains a variety of native plant community types which contain a number of native
plant species, as well as a variety of unique natural features. Within the open space, there are a number
of opportunities for the implementation of prescribed restoration and management activities which
would greatly enhance the ecological integrity of Martin's Meadows. The planning of future open space
uses and amenities should consider the location and quality of the natural features within the open
space, to capitalize on and enhance the quality of these resources and incorporate them into the long
term open space plan.
As a next step, CCES recommends that the City consider the completion of a more detailed restoration
and management plan which would assist the City in planning for future restoration efforts as well as
necessary long -term maintenance activities. A restoration and management plan should include a five
to ten year implementation schedule, management priorities, and an anticipated budget for completing
the tasks. Such a plan is essential to assisting the City to plan and prioritize management of the Martin's
Meadows open space and other adjacent City open spaces. A restoration and management plan should
also include an evaluation of potential grant programs and cost -share opportunities which are likely
available to the City. Outside funding sources can provide financial support for completing initial
restoration efforts of City owned open spaces.
Page 9 of 13
City of Andover - Ecological Assessment of Martin's Meadows Open Space
Critical Connections Ecological Services, Inc.
Final Report
October 6, 2015
SELECT SITE PHOTOGRAPHS FROM MARTIN'S MEADOWS
Photograph 1: Example of Southern Wet Aspen Forest at Martin's Meadows (WFsSS).
Photograph 2: Example of Southern Mesic Oak - Basswood Forest (MHs38).
Page 10 of 13
City of Andover - Ecological Assessment of Martin's Meadows Open Space
Critical Connections Ecological Services, Inc.
Final Report
October 6, 2015
Photograph 3: Example of Northern Wet Meadow /Carr (WMn82).
Photograph 4: Example of Southern Dry Prairie (UPs13), beneath overhead utility lines.
Page 11 of 13
City of Andover - Ecological Assessment of Martin's Meadows Open Space
Critical Connections Ecological Services, Inc.
Final Report
October 6, 2015
_ \
i
Photograph 5: Photograph of Plantanthera psycodes, not yet in bloom at Martin's Meadows.
Page 12 of 13
City of Andover - Ecological Assessment of Martin's Meadows Open Space
Critical Connections Ecological Services, Inc.
Final Report
October 6, 1015
Photograph 6: Photograph of Liparis liliifolia at Martin's Meadows.
Page 13 of 13
APPENDIX A
FIGURES
i4NOKA
HENNEPIN WA IN ON
S
CARVER
SCOTT DAKOTA
Appendix A, Figure 1
Project Location Map
City of Andover - Martin's Meadows
2015 Ecological Assessment and Survey
= Martin's Meadows
� ^
Ecological ogi fomrevices.
_...� &ologimf Services, Inc.
Mi
0 0.25 0.5 1
City of Andover - Martin's Meadows
2015 Ecological Assessment and Survey
Martin's Meadows Quality Ranking
- Moderate to Good Quality Plant Community
Moderate Quality Plant Community
Moderate to Poor Quality Plant Community
Poor Quality Plant Community
QMartin's Meadows Boundary
ft
-i rp-5�4401tv WI TI
Pr
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Appendix A, Figure 4Y
I
Unique and Rare Features
City of Andover • Martin's Meadows
2015 Ecological Assessment and Survey
Lobelia cordinalis
Carexassiniboinensis
uparis liliifolis
Platanthera psycodes
Guleo lineatus
Historic River Oxbow
'tot
Native Plant Community Types
Parcels—UTM selection
N
3 121 2 d
%4
APPENDIX B
DOMINANT SPECIES LIST
Martin's Meadows - City of Andover - Dominant Species List - 2015
Column
them On
box elder
Nomenclature follows that of published volumes
N
of "Flora of North America "IFNA). For those
MN DNR Scientific
families not yet published by FNA ,nomenclature
Name
follows that of Gleason & Cronquises "Manual
D
of Vosmlur Plants of Northeastern United
States and Canada ".
Common name
The preferred MNDNR common name.
common yarrow
9 = broadleaf evergreen, 0 = broadleaf
U
deciduous, E -nmi ieleaf evergreen, G =
Physiognomy
graminoid,H =fwb, L= lichens and moss, C-
Agastache foeniculum
climber, N= stem succulent X = epiphyte, F =
H
floating aquark S - submerged aquatic
N = native to the state of MN, 1= introduced, V
Native Status
= Nnderermined
canada anemone
State Rarity Status. E= Endangered, T=
Rarity Status
Threatened, SC= Special Concern, W =watch
List, H - Historical
FN - Federal noxious weed SN =State
prohibited noxious weed, RN - State restricted
Invasive Status noxious weed, PI =DNR Prohibited inversive
species, PS = State prohibited weed seed, RS =
State restricted weed seed
I— ..... DMvxinemmv Native status Rarity Status Invasive Status
Acernegundo
box elder
D
N
Acer sacchannum
silver maple
D
N
Achillea millefolium
common yarrow
H
U
Agastache foeniculum
blue giant hyssop
H
N
Anemone canadensis
canada anemone
H
N
Anemone cylindrical
long- headed thimbleweed
H
N
Arisaema triphyllurn
Jack-in-the-pulpit
H
N
Artemisia ludoviclana subsp. ludoviciana
white sage
H
N
Ascle ias Incarnata var. Incarnate
swamp milkweed
H
N
Asclepias syriaca
common milkweed
H
N
Ascle ias tuberosa var. interior
butterflyweed
H
N
Asparagus offlcinalis
asparagus
H
I
Athyrium filix- femina var. angustum
lady fern
H
N
Berteroa incana
hoary alyssum
H
I
RS
Boehmeria cylindrica
false nettle
H
N
Bromus inermis
smooth brome
G
I
Bromus kalmd
Kalm's brome
G
N
Calamagrostis canadensis
bluejoint
G
N
Carex assinibomensis
assiniboine sedge
G
N
Carex bebbii
Bebb's sedge
G
N
Carex blanda
charming sedge
G
N
Carex deweyana var. deweyana
Dewey's sedge
G
N
Carex lacustris
lake sedge
G
N
Carex lu ulina
hop umbrella sedge
G
N
Carex pellita
woolly sedge
G
N
Carex pensylvanica
Pennsylvania sedge
G
N
Carex radiata
eastern star sedge
G
N
Carex retrorsa
retrorse sedge
G
N
Carex sartwellii
Sartwell's sedge
G
N
Carex stipata var. sti ata
awl- fruited sedge
G
N
Carexstricta
tussock sedge
G
N
Carex tenera
marsh straw sedge
G
N
Carex tribuloides var. tribuloides
blunt broom sedge
G
N
Carex vesicaria
inflated sedge
G
N
Cicuta bulbifera
bulb - bearing water
hemlock
H
N
Cicuta maculata var. maculata
spotted water hemlock
H
N
Cirsium arvense
Canada thistle
H
I
SN,PS
Comandra umbellate
bastard toadflax
H
N
Convolvulus arvensis
field bindweed
H
I
PS
Corns racemosa
gray dogwood
D
N
Corylus americana
American hazelnut
D
N
Cyperus schweinitzii
Schweinitis nut sedge
G
N
Dalea purpurea var. purpurea
purple prairie clover
H
N
Desmodium canadense
Canada tick trefoil
H
N
Desmodium glutinosum
pointed - leaved tick trefoil
H
N
Dianthus armeria subsp. armeria
Deptford pink
H
I
Echinocystis lobata
wild cucumber
H
N
Elymus vir inicus var. vir inicus
Virginia wild rye
G
N
Equisetum arvense
field horsetail
H
N
Eutrochium maculatum
spotted Joe pye weed
H
N
Fraxinus pennsylvanica
green ash
D
N
Galium aparine
cleavers
H
N
Geum canadense
white avers
H
N
Geum triflorum
prairie smoke
H
N
Glechoma hederacea
creeping charlie
H
I
Glyceria grandis var. grandis
tall manna grass
G
N
Heliopsis helianthoides var. scabra
ox -eye
H
N
Hesperostipa spartea
porcupine grass
G
N
Ilex verticillata var. verticillata
winterberry
D
N
Juniperus virginiana var. virginiana
eastern red cedar
E
N
Lactuca canadensis
Canada wild lettuce
H
N
Laportea canadensis
woodnettle
H
N
Leersia oryzoides
rice cut grass
G
N
Lespedeza capitata
round- headed bush clover
H
N
Lilium michi anense
Michigan lily
H
N
Liparis lihifolia
lily - leaved twayblade
H
N
Lobelia cardinalis var. cardinalis
cardinal flower
H
N
Lycopus americanus
cut - leaved bugleweed
H
N
Lysimachia terrestris
yellow loosestrife
H
N
Maianthemum canadense
Canada mayflower
H
N
Melilotus officinalis
yellow sweet clover
H
I
Menispermum canadense
Canada moonseed
C
N
Mimulus ringens var. ringens
blue monkey flower
H
N
Monarda flstulosa var. flstulosa
wild bergamot
H
N
Onoclea sensibilis
sensitive fern
H
N
Osmorhiza claytonii
Clayton's sweet Cicely
H
N
Osmunda claytoniana
interrupted fern
H
N
Ostrya virginiana
ironwood
D
N
Parthenocissus quinquefolia
Virginia creeper
C
N
Parthenocissus vitacea
woodbine
C
N
Penthorum sedoides
ditch stonecrop
H
N
Persicaria amphibia
water smartweed
F, H
N
Persicaria sagittata
arrow - leaved tearthumb
H
N
Phalaris arundinacea
reed canary grass
G
I
Phleum pratense subsp. pratense
timothy
G
I
Pilea pumila
dwarf clearweed
H
N
Platanthera psycodes
small purple fringed orchid
H
N
Polygala polygama var. obtusata
racemed milkwort
H
N
Potentilla simplex
oldfield cinquefoil
H
N
Prunus serotina
black cherry
D
N
quercus macrocarpa
bur oak
D
N
quercus rubra
northern red oak
D
N
Ratibida columnifera
prairie coneflower
H
N
Rhamnus cathartica
common buckthorn
D
I
RN
Rhus glabra
smooth sumac
D
N
Ribesamericanum
wild black currant
D
N
Rubus idaeus var. strigosus
red raspberry
D
N
Rubus occidental is
black raspberry
D
N
Rubus uniformis
bristle -berry
D
N
Rudbeckia hirta var. pulcherrima
black -eyed susan
H
N
Rudbeckia Iaciniata vac laciniata
tall coneflower
H
N
Rumex britannica
great water dock
H
N
Rumex crispus
curly dock
H
I
Sagittaria latifolia
broad- leaved arrowhead
H
N
Salix interior
sandbar willow
D
N
Sambucus canadensis var. canadensis
common elder
D
N
Sambucus racemosa var. pubens
red - berried elder
D
N
Scirpus pedicellatus
Istalked bulrush
G
I N
Scrophularia lanceolata
lance- leaved figwort
H
N
Solidago canadensis var .canadensis
Canada goldenrod
H
N
Solidago gigantea
giant goldenrod
H
N
Spartina pectinata
prairie cordgrass
G
N
Spiraea alba
white meadowsweet
D
N
Symphyotrichum ericoides
heath aster
H
N
Thalictrum dasycarpum
tall meadow -rue
H
N
Thelypteris palustris var. pubescens
northern marsh fern
H
N
Tilia americana
basswood
D
N
Toxicodendron radicans subsp. negundo
common poison ivy
D, C
N
SN
Tradescantia ohiensis
Ohio spiderwort
H
N
Tragopo on dubius
yellow goat's beard
H
I
Ulmus americana
American elm
D
N
Urtica dioica subsp. gracilis
stinging nettle
H
I
Verbascum thapsus
common mullein
H
I
Verbena hastata
blue vervain
H
N
Vernonia fasciculata
bunched ironweed
H
N
Veronicastrum virginicum
Culver's root
H
N
Vitis riparia
wild grape
C
N
Zanthoxylum americanum
prickly ash
D
N
Buteo lineatus
Red- shouldered hawk
SC
City of Andover
Ecological Assessment and Survey
North Woods Preserve
Township 32 North, Range 24 West, Section 14,
Andover, Anoka County, Minnesota
October 6, 2015
Prepared For:
The City of Andover
Mr. Dave Carlberg
1685 Crosstown Blvd. NW
Andover. MN 55304
VN66V R
Prepared By:
Critical Connections Ecological Services, Inc.
21150 Ozark Trail
P.O. Box 184
Scandia, MN 55073
Cl Connections
oicat S ervices, Inc.
City of Andover - Ecological Assessment of North Woods Preserve
Critical Connections Ecological Services, Inc.
Final Report
October 6, 2015
Introduction
Critical Connections Ecological Services, Inc. (CCES) was retained by the City of Andover (City) to conduct
an ecological assessment and vegetative survey of North Woods Preserve, a City owned open space.
North Woods Preserve is approximately 46 -acres in size and is located north of 161st Avenue NW and
east of Hanson Boulevard NW (see Appendix A, Figure 1).
North Woods Preserve is located within the Anoka Sand Plain Subsection of the Minnesota and
Northeast Iowa Morainal (MIM) Section, which is part of the Eastern Broadleaf Forest Province of
Minnesota. The Anoka Sand Plain Subsection mainly consists of flat, sandy lake plains and terraces.
Topography of the area is gently rolling. Soils are derived primary from fine sands and most are
excessively drained. There are areas of poorly drained soils which support mesic to wet plant
community types.
North Woods Preserve exhibits a variety of plant community types including: dry prairie, dry savanna,
fire dependent mesic oak woodlands, wet meadows and shrub carrs, tamarack swamp, as well as a non-
native pine planting. This variety of plant community types provides habitat for a number of plant and
animal species, as well as a variety of unique and rare natural features.
The goals and objectives of this project were as follows
1. Complete early and late season botanical surveys in an effort to classify native plant community
types within the City owned open space.
2. Identify, delineate, and map in a GIS -based format all plant community types identified within
North Woods Preserve.
3. Detect and document any species listed by the State of Minnesota as Endangered, Threatened,
or Special Concern.
4. Identify any unique or sensitive priority natural features within the open space.
5. Provide management recommendations specific to the site based on the field assessments
completed as part of this project.
Project Methodology
Gathering of Site Specific Information
To begin this project, CCES first compiled existing and relevant information associated with the site
including GIS -based data layers such as recent aerial photographs (true color and infrared), 10 -foot
contours and LiDAR topographic data, soils information, and known rare species locations (if present).
Using available desktop information, CCES created GIS -based shapefiles of proposed plant community
boundaries which would likely be encountered on site. The draft boundaries were to be field verified
and edited during the site visits.
Page 1 of 15
City of Andover - Ecological Assessment of North Woods Preserve
Critical Connections Ecological Services, Inc.
Final Report
October 6, 2015
Using these available data, CCES generated field maps for North Woods Preserve which were printed at
a 1:3,000 scale. These field maps were utilized for note taking as well as for delineating plant
community types during the field survey portions of this project. Generated field maps contained the
project boundaries, contour lines, draft delineations of proposed plant community boundaries, as well
as soil types. Field maps helped to guide the site survey process to ensure all native plant communities
and unique areas of the site were evaluated in detail.
Field Surveys
CCES visited North Woods Preserve on three separate occasions during the 2015 growing season. Field
visit dates were scheduled based on plant phenology to ensure any potential rare species could be
detected during the visits. Field dates were also scheduled to ensure plant community types could be
accurately classified based on dominant vegetation during different times during the growing season.
Each visit to the site included a floristic inventory of dominant vegetation which was completed through
a targeted meander survey effort. When areas with a higher potential to support rare or unique
features were encountered, a more focused and detailed survey effort was completed in order to detect
any inconspicuous, rare, or otherwise unique species.
Native Plant Community (NPC) classification work was also competed for the entire site using the
Minnesota DNR's Field Guide to the Native Plant Communities of Minnesota: The Eastern Broadleaf
Forest Province (2005). The classification is hierarchical, with vegetation units described at levels
ranging from broad landscape -scale ecological systems to local communities. The classification system
is driven by plant species composition and was developed from analysis of extensive field plot data. The
classification relates the vegetation units to geography and to important environmental conditions and
processes. Plant communities located within North Woods Preserve were classified to the NPC Type
level. Additional information on the Minnesota DNR's Native Plant Community Classification System can
be found by visiting the following website: http: / /www.dnr. state .mn.us /npc /classification.html.
CCES ecologists also assigned a plant community quality ranking and noted the presence of any invasive
plant species. Plant community quality rankings range from an A ranking through a D ranking. An "A"
rank would indicate an excellent quality plant community with no disturbance and natural processes
intact. A "B" rank would indicate a good quality plant community with natural processes intact, and
minimal disturbances by humans and exotic species. A "C" rank would indicate a moderate quality plant
community with obvious past disturbance, but is still recognizable as a native plant community. A "D"
rank indicates a poor quality natural community with some natives present but is highly altered or
disturbed.
CCES carefully surveyed for the presence of any State - listed, rare species whenever unique habitats with
the potential to support rare species were encountered. CCES also noted the occurrence of invasive or
aggressive non - native plant species which may be targeted for future management.
Page 2 of 15
City of Andover - Ecological Assessment of North Woods Preserve
Critical Connections Ecological Services, Inc.
Final Report
October 6, 2015
During each site visit, CCES also collected high resolution digital photographs of the site for use by land
managers. Select photographs are provided in this report.
Project Results:
Native Plant Community Mapping and Descriptions:
CCES ecologists identified and mapped a total of seven (7) native plant community types and subtypes
and one (1) non - native plant community type within the North Woods Preserve. A figure depicting the
location and extent of each of these plant community types can be found in Appendix A, Figure 2. Plant
community quality rankings are also provided in Appendix A, Figure 3. Below, a short description of
each plant community type documented within the City open space is provided. Dominant species in
each community are listed, a full list of dominant species can be found in Appendix B.
Southern Dry -Mesic Oak (Maple) Woodland - FDs37
Approximately seven (7) acres within North Woods Preserve were classified as Southern Dry-Mesic Oak
(Maple) Woodland. This native plant community type was documented in upland areas with excessively
drained Zimmerman Series soils which formed in glacial outwash sands and typically support mixed oak
forest communities. All plant communities classified as FDs37 were assigned a quality ranking of
moderate (C- ranking). Dominant species within this plant community type at North Woods Preserve
included Quercus rubro (red oak), Quercus morcrocarpa (bur oak), Acre rubrum (red maple), Acre
negundo (boxelder), Populus tremuloides (quaking aspen), Zonthoxylum americonum (prickly ash),
Corylus americona (hazelnut), Cornus rocemoso (grey dogwood), Rubus idaeus (red raspberry), Rubus
allegheniensis (tall blackberry), Rubus ferrofluvius (iron river blackberry), Rhamnus cathortico (common
buckthorn), Juniperus virginiona (eastern red cedar), Eurybio mocrophyllo (large - leaved aster), Galium
triflorum (sweet- scented bedstraw), Galium boreale (northern bedstraw), Corex gracillima (graceful
sedge), Corex pensylvanica (Pennsylvania sedge), Elymus hystrix (bottlebrush grass), Oryzopsis
osperifolia (mountain rice grass), Osmundo claytoniono (interrupted fern), Trientolis borealis
(starflower), Toxicodendron rodicans (poison ivy), Moionthemum conadense (Canada mayflower), and
Vitis riparia (riverbank grape).
Southern Dry Prairie - UPs13
Approximately eleven and half (11.5) acres within North Woods Preserve were classified as Southern
Dry Prairie (UPs13). This native plant community type was located on Zimmerman fine sand (2 -6%
slopes). This plant community was found in two areas, one area was directly adjacent to the parking lot
off of Hanson Boulevard NW and the other larger area was located in the northeast corner of the site.
The larger area contained two small wetland depressions, which is typical of this plant community type
on Zimmerman soils. All plant communities classified as UPs13 were assigned a quality ranking of good
Page 3 of 15
City of Andover - Ecological Assessment of North Woods Preserve
Critical Connections Ecological Services, Inc.
Final Report
October 6, 2015
to moderate (B /C- ranking). Dominant species documented within the upland prairie consisted of Stipo
spartea (porcupine grass), Koelerio pyramidata (lunegrass), Corex muehlenbergii (Muhlenberg's sedge),
Bromus inermis (smooth brome), Solidago ridgido (stiff goldenrod), Solidago speciosa (showy
goldenrod), Asclepias tuberoso (butterfly milkweed), Achillea millefolium (common yarrow), Berteroo
incono (hoary alyssum), Artemisia compestris (tall wormwood), Artemisia ludoviciana (prairie sage),
Rudbeckia hirto (black -eyed susan), Verbascum thapsus (common mullein), Trodescantio brocteoto
(long - bracted spiderwort), Lespedeza capitoto (round headed bush clover), luniperus virginiano (eastern
red cedar), Rhus glabra (smooth sumac), and Quercus macrocarpa (bur oak - shrubs). Populations of
Oenothero rhombipetolo (rhombic evening primrose; MN Special Concern) were detected within the Dry
Prairie (UPs13) plant community areas, as well as populations of Aristido tuberculoso (sea -beach
needlegrass; MN Threatened). These rare species are dependent on dry, sandy, open habitats
(sometimes lacking in cover) such as those exhibited at North Woods Preserve.
Southern Dry Savanna - UPs14
Approximately two (2) acres within North Woods Preserve were classified as Southern Dry Savanna
(UPs14). This native plant community type was also documented on Zimmerman fine sands (2 -6%
slopes). Dry Savanna areas were found in the transition zones between Southern Dry-Mesic Oak
(Maple) Woodland FDs37 and Southern Dry Prairie (UPs13) plant community types. All plant
communities classified as UPs14 were assigned a quality ranking of moderate (C- ranking). Dominant
plant species observed within the Dry Savanna areas included scattered clumps of Quercus macrocarpa
(bur oak), with Amorpho canescens (leadplant), Prunus virginiano (chokecherry), Rosa arkansono (prairie
rose), Rhus glabra (smooth sumac), Hesperostipa sporteo (porcupine grass), Sorghastrum nutons (indian
grass), Helionthemum bicknellii (hoary frostweed), Lithospermum corolinense (hoary puccoon),
Seloginella rupestris (rock spikemoss). Seedlings and shrubs of bur oak were also common within the
Dry Savanna areas.
Southern Wet Aspen Forest - WFs55
Approximately two and half (2.5) acres within North Woods Preserve have been classified as Southern
Wet Aspen Forest (WFs55). This forested plant community type was limited to moist depressions on
Isanti fine sandy loam soils. All plant communities classified as WFs55 were assigned a quality ranking of
poor (D- ranking). Dominant species included Populus temuloides (quaking aspen), Acer negundo
(boxelder), Prunus serotino (black cherry), Cornus racemoso (grey dogwood), Corex intumescens
(bladder sedge), Pholoris orundinacea (reed canary grass), Colamagrostis conadensis (Canada bluejoint),
Oryzopsis asperifolia (mountain rice grass), Urtica dioica (stinging nettle), and Onocleo sensibilis
(sensitive fern).
Southern Tamarack Swamp— FPs63
Approximately one half (0.5) acres within North Woods Preserve has been classified as Southern
Tamarack Swamp (FPs63). This forested plant community type occurs on permanently saturated organic
Page 4 of 15
City of Andover - Ecological Assessment of North Woods Preserve
Critical Connections Ecological Services, Inc.
Final Report
October 6, 2015
peat soils. This plant community was uncommon at the North Woods Preserve site, and is currently
restricted to the eastern edge of the large wet meadow /carr complex at the eastern end of the
property. The Southern Tamarack Swamp was assessed as a moderate quality native plant community
remnant (C- ranking), and esstentially currently functions as an extension of the larger wet meadow /carr
complex (also C -rank in quality). Dominant species included Lorix loricino (tamarack), Populus
temuloides (quaking aspen), Cornus racemosa (grey dogwood), Alnus incana (speckled alder), Carex
losiocorpo (wire sedge), Corex dispermo (soft - leaved sedge), Calamagrostis canadensis (Canada
bluejoint), Glycerio striata (fowl mannagrass), Caltho polustris (marsh marigold), Thelypteris palustris
(northern marsh fern), and Moionthemum conadense (Canada mayflower). The tamarack swamp are
perched on a slight topographic rise that is perennially saturated. This 'island' of tamarack is surrounded
by inundated meadow on three sides and is very difficult to access on foot.
Northern Wet Meadow /Carr - Willow - Dogwood Shrub Swamp Subtype - WMn82a
Approximately nine (9) acres within North Woods Preserve have been classified as Northern Wet
Meadow /Carr - Willow - Dogwood Shrub Swamp Subtype - (WMn82a). This wetland plant community
type was located on the eastern boundary of the site on Rifle mucky peat soils. One of the plant
communities classified as WMn82a was assigned a quality ranking of moderate (C- ranking), while a
second area of WMn82a received a quality ranking of poor (D- ranking) due to excessive disturbance and
invasive species. Dominant species noted within this plant community type included a heavy shrub
component of Salix petiolaris (slender willow), Salix discolor (pussy willow), Conrus sericea (red osier
dogwood), Alnus incana (speckled alder), Spiraea olbo (meadowsweet), and a diverse herbaceous
component that included Asclepias incornoto (swamp milkweed), Scutellaria lateriflora (mad dog
skullcap), Thelypteris palustris (northern marsh fern), Eutrochium maculatum (spotted joe pye weed),
Lycopus americanus (cut- leaved bugleweed), Phalaris arundinacea (reed canary grass), and Typha
angustifolia (narrow leaved cattail).
Northern Wet Meadow /Carr - Sedge Meadow Subtype (WMn82b)
Approximately ten (10) acres within North Woods Preserve have been classified as Northern Wet
Meadow /Carr - Sedge Meadow Subtype (WMn82b). This wetland plant community type is also found
on the east side of the property bordering the willow dogwood swamp (WMn82a). Soils are
predominantly Rifle mucky peat. The majority of plant communities classified as WMn82B were
assigned a quality ranking of moderate (C- ranking), while one area classified as WMn82b received a
quality ranking of poor (D- ranking). Dominant plant species in the area included Phalaris arundinacea
(reed canary grass), Calamagrostis canadensis (Canada bluejoint), Corex hoydenii (Hayden's sedge),
Carex hystericino (porcupine sedge), Corex pellito (woolly sedge), Carex utriculota (beaked sedge), Typha
angustifolia (narrow leaved cattail), Lycopus omericonus (cut- leaved bugleweed), Thelypteris palustris
(northern marsh fern), Onocleo sensibilis (sensitive fern), Rubus uniformis (bristle berry), and Asclepias
incarnota (swamp milkweed). One population of Liparis loeselii (Loesel's twayblade; a native orchid),
was found within a wet meadow plant community type. This wet meadow is located in the central
Page 5 of 15
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portion of the property, and there is much evidence in the field to support that the wet meadow was
excavated from upland soil areas in past decades. All of the other wet meadows within the North
Woods Preserve appear to be naturally occurring and not a result of past excavation.
Planted or Cultivated Vegetation - Red Pine and Spruce Planting Area
Approximately three and a half (3.5) acres within the North Woods Preserve have been classified as
planted or cultivated vegetation, or a red pine and spruce planting. This area is located on well drained,
sandy Zimmerman Series soils. This area contains rows of red pine and spruce. The herbaceous layer is
essentially lacking due to the deep shading of the pine trees and sterile acidic conditions. Since the area
is considered to be planted and therefore not a natural community type, it was not given a quality
ranking code.
Rare Species and Sensitive Features
Aristida tuberculosa - Sea -Beach Needlegrass - Minnesota State Threatened Species
Two large sub - populations of Aristida tuberculosa (Sea -beach needlegrass) were detected within the
North Woods Preserve. These populations were limited to areas classified as Southern Dry Prairie
(tJPs13) and Southern Dry Savanna (tJPs14) in areas of exposed sand, where vegetation was very sparse
to lacking. Appendix A, Figure 4 depicts the locations and extents of Aristida tuberculosa sub -
populations within the preserve.
According to the Minnesota DNR's Rare Species Guide "Aristida tuberculosa is a small, tufted grass
averaging about 30 cm (12 in.) tall, with lateral branches arising from the lower portion of the stem. In
Minnesota, A. tuberculosa occurs exclusively in dry, loose sand in sand savannas, sand prairies, and
dunes where vegetation is sparse. Sandy habitats that are occasionally inundated, such as lakeshores
and river floodplains, are not suitable. Aristida tuberculosa sometimes occurs in disturbed habitats such
as roadsides, foot trails and old fields, but these unstable habitats generally do not support persistent
populations of the species.
Sea -beach needlegrass is a wind - pollinated annual grass with a need for open, sparsely vegetated
habitats where there is dry, shifting sand. The bent awns seem to be an adaptation for catching in the
fur of mammals, thereby dispersing the seeds. However, it also seems likely that wind is involved in the
process of dispersion. It has been reported that the awns have hygroscopic (readily taking up and
retaining moisture) properties, which allow the seeds to bury themselves; seeds that do not get buried
usually do not germinate, or if they do germinate, the resulting seedlings fail to become established
(Collins and Wein 1997). The best time to search for A. tuberculosa is when mature reproductive
structures are present from early July through October.
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There are a total of six species of Aristida in Minnesota. All are characterized by an awn with three forks,
or barbs, that project from the end of the flower; hence their other common name, "triple -awned
grasses ". Aristida tuberculosa is easily distinguished from the five other species because the base of the
three forks is twisted into a single column. Furthermore, the seeds and awns of Aristida tuberculosa are
relatively much larger than those of the other five species native to Minnesota.
Aristida tuberculosa is a Threatened species in Minnesota. Therefore, this species is protected from
direct and indirect taking and loss under the Minnesota Endangered and Threatened Species Statutes
(Minnesota Rules 6212.1800). Recent open space infrastructure, such as parking lots and trails, have
been installed within close proximity to these protected species sub - populations. Future planned
infrastructure must avoid direct impacts to this State Threatened plant species, or a taking permit will be
required from the Minnesota DNR.
Oenothera rhombipetala - Rhombic Evening Primrose - Minnesota State Special Concern Species
Multiple small sub - populations of Oenothera rhombipetala were detected within the North Woods
Preserve. O. rhombipetala populations were found in areas classified as Southern Dry Prairie (tJPs13), in
areas with sparse vegetation on very sandy, well drained soils (see Appendix A, Figure 4).
According to the Minnesota DNR's Rare Species Guide " Oenothera rhombipetala (Rhombic evening
primrose) is a biennial forb which has been listed as a special concern species in the State of Minnesota.
It prefers dry, sandy soils and full sun. The natural habitat of 0. rhombipetala is dry, sandy prairies and
dunes in the east - central and southeast portions of Minnesota. There are some indications that the
species can tolerate a certain level of human activity within its habitat. This might include light
disturbance to the soil surface caused by vehicles or farm machinery, and possibly light grazing by
domestic livestock. It may even find temporary habitat on sandy roadsides and in abandoned fields,
although it is unlikely that such habitats can sustain a population of O. rhombipetala for very long.
Oenothero rhombipetala is a biennial that lives just two years. The first year it produces only a basal
rosette of leaves and a taproot. The second year it produces an erect flowering stem. The flowers open
in the evening and are pollinated by a number of night- active insect species including sphinx moths. The
flowers are self - incompatible so cross - pollination is required. The dried seed capsules remain on the
stem and continue to release seeds for some period of time after the plant has died at the end of its
second year. The seeds posses no specialized structure to aid dispersal although they are small enough
to be carried short- distances on a strong wind. The best time to search for O. rhombipetala is when
flowers are present between mid -July and September."
Oenothero rhombipetala is listed as a Special Concern species in Minnesota. Therefore, this species is
not protected under Minnesota Rules 6212.1800, which only affords legal protection to State
Endangered and Threatened species.
Page 7 of 1S
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Minnesota Native Orchids:
CCES ecologists did detect a single population of one species of a Minnesota native orchid within the
North Woods Preserve Open Space (see Appendix A, Figure 4). A single population of Liporis loeselii
( Loesel's twayblade) was found at one location within the preserve within a Northern Wet Meadow /Carr
- Sedge Meadow Subtype (WMn82b) plant community. Loesel's Twayblade is a perennial orchid species
that prefers part shade to full sun and moist conditions. It blooms between June and July and grows to a
height of about three to ten inches.
Loesel's twayblade is one of the most common orchids in the State of Minnesota. However it is small
and inconspicuous and is often overlooked. It can occur in a range of habitats, including early
successional areas and transitional areas, and can tolerate nutrient extremes (Welby Smith, 1993). Such
is the case for the Loesel's twayblade at North Woods Preserve, where the orchid population was found
growing in a disturbed wetland with naturally reestablishing native vegetation (stormwater treatment
area).
While this species is not considered rare and is somewhat common in the State of Minnesota, it is a
unique feature worth noting within the City open space.
Discussion
Management Recommendations:
During each field visit CCES ecologist noted areas of the site in need of future land management
activities. The following are general; management recommendations for North Woods Preserve:
1. Monitoring and control of aggressive non - native /invasive plant species: while completing the
site assessment work, CCES ecologists did note a number of non - native and invasive plant
species which should be targeted for treatment in the near future to prevent further spread and
displacement of native plant species. Invasive plant species noted within the North Woods
Preserve included Rhamnus cothortica (common buckthorn), Zonthoxylum americanum (prickly
ash), Pholoris arundinacea (reed canary grass), Allioria petiolota (garlic mustard), Cirsium
orvense (Canada thistle), Typha ongustifolio (narrow - leaved cattail), Melilotus olba (white sweet
clover), Melilotus officinolis (yellow sweet clover), and Berteroo incono (hoary alyssum).
Common buckthorn and prickly ash were common throughout the wooded and forested native
plant community types. Prickly ash and buckthorn could be controlled through manual cutting
and a targeted application of a woody specific herbicide. Garlic mustard was also detected in the
wet forest areas as well as in the mesic oak woodland. Garlic mustard can be controlled through
mechanical means such as repeated cutting, fall or early spring prescribed fires, or through foliar
chemical applications in the early spring. Sweet clover and hoary alyssum were found in dry
prairie openings. In areas with small numbers, individuals could be hand pulled, bagged and
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removed from the site. In areas with more dense infestations, spring mowing followed by
herbicide applications would be necessary. Reed canary grass was confined to moist areas with
poorly drained soils in wetland plant community types and within the wet forests. Removal of
reed canary grass would require a long term plan for its control as well as the implementation of
follow -up restoration activities. A long -term commitment (of five to ten years) to this effort
would be needed to ensure success. Control of reed canary grass can be achieved through a
combination of techniques that may include mowing, herbicide application, prescribed burning,
or scraping during frozen conditions to remove accumulated thatch. Canada thistle and narrow
leaved cattail were also noted within wetland plant communities both species can be controlled
through cutting and herbicide application. Following control of noxious or invasive species,
appropriate plant community restoration measures should be implemented to ensure long -term
success of the efforts.
Poison Ivy, a noxious weed was also documented within the wooded native plant communities.
Poison ivy (Toxicodendron radicons) is a native species that is classified as State Prohibited as it
can be harmful to humans. Poison ivy populations could be toxic to park users and should be
targeted for removal due to this potential threat.
2. In addition to invasive species control, all native plant community types with in North Woods
Preserve would benefit from plant community management and restoration activities. A lack of
natural disturbance and management has resulted in overgrown plant communities lacking in
native plant diversity. Reintroduction of natural processes through prescribed fire, mowing, and
overseeding with appropriate native species would be essential to maintain and /or elevate
native species diversity and improve the overall ecological health of the City owned open space.
Reintroduction of appropriate native species through overseeding or planting of live material
would also be beneficial in several areas of the preserve.
3. Oak wilt is caused by the fungus Ceratocystis fagocearum, and may cause a threat to North
Wood's Preserve. Red Oak (Quercus rubro) is most susceptible to the fungus within the
preserve, but bur oak (Quercus mocrocarpo) and white oak (Quercus albo) are also susceptible
to the fungus. If detected early, Oak Wilt can be controlled; making monitoring of the site for
future infestation issues an important task to consider. Oak wilt was not detected as a
significant problem at North Woods Preserve during the 2015 field assessment.
4. A final management consideration would be to monitor populations of the State listed rare
plant species detected within the open space. Two State listed species were detected within the
North Woods Preserve including Oenothero rhombipetalo (rhombic evening primrose; MN
Special Concern), and Aristida tuberculoso (sea -beach needle grass; MN Threatened).
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Sea -beach needle grass is dependent on open, sparsely vegetated habitats with dry, shifting
sands (dunes) that are relatively sparsely vegetated with native prairie grasses and wildflowers.
Under normal conditions, the vegetation in this habitat type is maintained by wildfire and
perhaps periodic drought. These processes keep the dunes from being overgrown by woody
vegetation or a dense thatch of herbaceous vegetation, which would eliminate habitat for this
rare species. The dune habitats observed at North Woods Preserve should be protected from
excessive foot traffic and off - highway vehicles (OHVs), which easily damage the fragile soils
giving invasive species an opportunity to get a foothold, displacing the rare species (MN DNR
Rare Species Guide). These areas should also be kept open and free of dense vegetation through
prescribed and permissible management activities.
Rhombic evening primrose requires dry prairie habitats to survive and is extremely vulnerable to
the invasion of non - native plant species, especially Vicia villosa (hairy vetch), Euphorbia
esula (leafy spurge), Centourea stoebe (spotted knapweed), Bromus inermis (smooth brome),
and Lotus corniculatus (birdsfoot trefoil) (MN -DNR Rare Species Guide). Several of these
invasive species have already been detected within the preserve and could threaten the long-
term viability of the rhombic evening primrose. Habitat protection is essential to maintain a
viable population.
Species listed as Threatened or Endangered are protected under Minnesota's Endangered
Species Law and therefore cannot be taken or disturbed without a permit from the Minnesota
Department of Natural Resources. Certain management activities such as herbicide application,
mowing, or other near these populations may require a special permit. The City should consult
with its ecologists and the MNDNR prior to beginning any management work that may
potentially have any effect on State - listed species. Species listed as Special Concern are rare,
but are not afforded these same protections under State law.
Page 10 of 15
City of Andover - Ecological Assessment of North Woods Preserve
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Summary and Next Steps:
The North Woods Preserve contains a variety of native plant community types which support a diversity
of native plant species, including two species that are considered rare in the State of Minnesota. There
are many opportunities for the implementation of prescribed restoration and management activities
which would greatly enhance the ecological integrity of North Woods Preserve, while allowing for
continued passive recreational opportunities that are compatible with the site's unique natural
resources.
As a next step, CCES recommends that the City consider the completion of a more detailed restoration
and management plan which would assist the City in planning for future restoration efforts as well as
necessary long -term maintenance activities. A restoration and management plan should include a five
to ten year implementation schedule, management priorities, and an anticipated budget for completing
the tasks. Such a plan is essential to assisting the City to plan and prioritize management of the Martin's
Meadows open space and other adjacent City open spaces. A restoration and management plan should
also include an evaluation of potential grant programs and cost -share opportunities which are likely
available to the City. Additional funding sources from outside of the City can provide financial support
for completing initial restoration and management efforts of City owned open spaces.
Page 11 of 15
City of Andover - Ecological Assessment of North Woods Preserve
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Final Report
October 6, 2015
SELECT SITE PHOTOGRAPHS FROM NORTHWOODS PRESERVE
4 A
Example of Northern Wet Meadow /Carr Sedge Meadow Subtype (WMn82b)
r
r
�ez :.
Example of Southern Aspen Wet Forest (in background) - WFs55
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City of Andover - Ecological Assessment of North Woods Preserve
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Final Report
October 6, 2015
Example of overgrown Southern Dry Savanna (UPs14)
y
'i
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Example of Southern Dry Mesic Oak (Maple) Woodland (FDs37), in the background.
Page 13 of 15
City of Andover - Ecological Assessment of North Woods Preserve
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Final Report
October 6, 2015
Photograph of Rhombic evening primrose (Oenothero rhombipetala, MN Special Concern)
t i
0'1 e
- 1`:
Photograph of Aristido tuberculoso habitat (shifting, open sand dunes).
Page 14 of 15
"T
•
Ir
is
i F
Al
Photograph of Aristido tuberculoso habitat (shifting, open sand dunes).
Page 14 of 15
City of Andover -Ecological Assessment of North Woods Preserve
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October 6, 2015
:* w. A
Photograph of the inconspicuous but abundant
Sea -beach needle grass (Aristida tuberculoso; MN Threatened)
Page 15 of 15
I
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APPENDIX A
FIGURES
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s ANOKA
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SCOTT DAKOTA
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Appendix A, Figure 1
Project Location Map
City of Andover - North Woods Preserve
2015 Ecological Assessment and Survey
!rti"I
E11Connections ._QkatServfcn, t Inc.
Miles
0 0.25 0.5 1
A
Native Plant Community Types
Citv of Andover - North Woods Preserve
i
4
r�
Appendix A, figure 3
Native Plant Community Quality Ranking
City of Andover - North Woods Preserve
2015 Ecological Assessment and Survey
Quality Ranking
- B /C: Moderate to Good Quality Plant Community
- C: Moderate Quality Plant Community
- D: Poor Quality Plant Community
- NN: Planted or Cultivated, Not ranked
North Woods Preserve Boundary
oFKi
uaeDe. r.,ran ,M.
FO
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WF3M UPl14 FOS37
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Appendix A, Figure 4
Unique and Rare Features
City of Andover - North Woods Preserve
2015 Ecological Assessment and Survey
QNorth Woods Preserve Boundary
Native Plant Community Types
Aristida tubercutosa (Sea -beach needlegrass)
-- Minnesota Threatened Species
Oenothera rhombipetal (Rhombic evening primrose)
Minnesota Special Concern Species
.� Liparis loeselii (Loesel's twayblade)
Native orchid species
T
0 225 450 900 Feet
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APPENDIX B
DOMINANT SPECIES LIST
North Woods Preserve - City of Andover - Dominant Species List - 2015
Column De mhlen
Namenclature follows that of published volumes of "Flora
MN DNR Scientific of North America" (FNA). For those families not yet
Name published by FNA, nomenclaturefollows that of Gleason&
Cronquist's "Manual of Vascular Plants of Northeastern
United States and Canada'.
Common name The preferred MNDNR common name.
B = broadleaf evergreen, D - broadleaf deciduous, E=
Physiognomy
needlehnif evergreen, G = gmminaid, H = forb, L = Hchens
and mast, C- climber, K =stem sotto /en[, X = epphNe, F=
floating aquatic, S = submerged aquatic
Native Status N = native to the state of MN, 1= Introduced, U =
Undetermined
Ranry, Status State Rarity status: E= Endangered, T= Threatened, SC=
Special Concern, W = Watch List, H = Historical
FN = Federal noxious weed, SN =State prohibited noxious
weed, RN = State restricted noxious weed, PI = DNR
Invasive Status Prohibited invosive species, PS= State prohibited weed
seed, RS =State restricted weed seed
MN DNR Scientific Name Common name Phvsi"riomv Native Status Rarltv Status Imrasive Status
Acayp or omboldea
three-seeded mercury
H
N
Acer negundo
box elder
D
N
Acer rubrum
red maple
D
N
Achilles millefolium
common yarrow
H
U
Agostache foeniculum
blue giant hyssop
H
N
Agrostis giganteo
redtop
G
I
Alliaria petiolato
garlic mustard
H
1
SN
Alnus incana subsp. rugoso
speckled alder
D
N
Ambrosia artemisfifalia
common ragweed
H
N
Amorpha conescens
leadplant
D
N
Amphicarpoea brocteata
hog peanut
H
N
Andropogon gerordii
big bluestem
G
N
Anemone cylindrica
long - headed thimbleweed
H
N
Anemone quinquefolia var. quinquefolia
wood anemone
H
N
Antennoria cf. neglecto
field pussytoes
H
N
Aquilegio canadensis
columbine
H
N
Arabis pycnocarpa var. pycnocarpa
hairy rock cress
H
N
Frolic, nudicaulis
wild sarsaparilla
H
N
Aristido tuberculoso
seaside three -awn
G
N
T
Artemisia biennis
biennial wormwood
H
I
Artemisia ludoviciana subsp. Iudoviciano
white sage
H
N
Asclepias exaltata
poke milkweed
- H
N
Asclepias incornoto var. incarnate
swamp milkweed
H
N
Asclepias synaco
common milkweed
H
N
Asclepias tuberosa var. interior
butterflyweed
H
N
Asclepias viridifiora
green milkweed
H
N
Athyrium filix- femina vor. angustum
lady fern
H
N
Berteroo incana
hoary alyssum
H
I
RS
Betulo papyrifero
paper birch
D
N
Boehmeria cylindrica
false nettle
H
N
Bromus inermis
smooth brome
G
I
Calamagrostis canadensis
bluejoint
G
N
Coltho polustris
common marsh marigold
H
N
Carex bebbif
Bebb's sedge
G
N
Carex brunnescens
brownish sedge
G
N
Carex cf. gravido
heavy sedge
G
N
Carex camosa
bristly sedge
G
N
Carex debilis vac rudgei
weak sedge
G
N
W
Carex deweyano vor. deweyano
Dewey's sedge
G
N
Carex disperma
soft- leaved sedge
G
N
Carex grocillima
graceful sedge
G
N
Carex haydenit
Hayden's sedge
G
N
Carexhystericino
porcupine sedge
G
N
MN ONR Scientific Name Common name Phvsio -gnomy Native Status Rarity Status Invasive Status
Carex inops subsp, heliophila
sun- loving sedge
G
N
Carex intumescens
bladder sedge
G
N
Carex losiocorpa subsp. americana
fen wiregrass sedge
G
N
Carex muehienbergii
Muhlenberg's sedge
G
N
Carex pellita
woolly sedge
G
N
Carex pensylvanica
Pennsylvania sedge
G
N
Corex siccato
dry spike sedge
G
N
Carex stipata var. stipata
awl- fruited sedge
G
N
Carex utriculoto
beaked sedge
G
N
Cirsium arvense
Canada thistle
H
I
SN,PS
Clodonia rongiferina
reindeer lichen
L
N
Conyza canadensis
horseweed
H
N
Cornus alternifolia
pagoda dogwood
D
N
Cornus racemoso
gray dogwood
D
N
Comus sericea
red -osier dogwood
D
N
Corylus americans
American hazelnut
0
N
Corylus cornuta subsp. cornuta
beaked hazelnut
0
N
Cyperus lupulinus
slender nut sedge
G
N
Dryopteris Carthusian
spinulose shield fern
H
N
Elymus hystrix
bottlebrush grass
G
N
Elymus trochycoulus subsp. trochycoulus
slender wheatgrass
G
N
Erigeron strigosus
daisy fleabane
H
N
Eupotorium perfoliatum
common boneset
H
N
Eurybio mocrophylla
large - leaved aster
H
N
Euthamia grominifolia
grass - leaved goldenrod
H
N
Eutrochium moculotum
spotted Joe pye weed
H
N
Fragaria virginiana
common strawberry
H
N
Froxinus pennyylvanica
green ash
D
N
Goleopsis tetrahit
hemp nettle
H
I
Galium boreale
northern bedstraw
H
N
Geranium maculatum
wild geranium
H
N
Glyceria striata
fowl manna grass
G
N
Hockelia virginiona
Virginia stickseed
H
N
Helionthemum bickneffli
hoary frostweed
H
N
Hesperostipa spartea
porcupine grass
G
N
Heteranthero dubia
water stargrass
S, H
N
Ilex verticillota var. verticillota
winterberry
D
N
Juniperus communis var. depresso
bush juniper
E
N
Juniperus virginiana var. virginiana
eastern red cedar
E
N
Koelerfa macrantho
junegrass
G
N
Larix loricina
tamarack
E
N
Lespedeza copitata
round - headed bush clover
H
N
Liatris aspera
rough blazing star
H
N
Linaria vulgaris
butter- and -eggs
H
I
Liparis loesehi
Loesel's twayblade
H
N
Lithospermum carohniense var. croceum
hairy puccoon
H
N
Lithospermum latifolium
American gromwell
H
N
Lobelia spicata
pale- spiked lobelia
H
N
Lycopodium hickeyi
princess pine
H
N
Lycopus americanus
cut - leaved bugleweed
H
N
Maionthemum conadense
Canada mayflower
H
N
Matteuccia struthiopteris var. pensylvanica
ostrich fern
H
N
Melilotus alba
white sweet clover
H
I
Melilotus officinolis
yellow sweet clover
H
I
Moehringia lateriflora
side - flowering sandwort
H
N
Oenothera rhombipetala
rhombic evening primrose
H
N
SC
Onoclea sensibilis
sensitive fern
H
N
Oryzopsis asperifolio
moutain rice grass
G
N
Osmunda claytonionc
interrupted fern
H
N
Osmundo regalis var. spectabifis
royal fern
H
N
Oxalis stricta
yellow wood sorrel
H
N
Parthenocissus quinquefolia
Virginia creeper
C
N
Persicaria amphibia
water smartweed
F, H
N
Persicaria hydropiper
marsh waterpepper
H
I
Phaloris orundinacea
reed canary grass
G
Phleum pratense subsp. pratense
timothy
G
Physaiis virginiana
Virginia ground cherry
H
Piceo glauca
white spruce
E
MN
Pilea pumila
dwarf clearweed
H
Pinus resinoso
red pine
E
Pinus strobus
white pine
E
MN DNR Scientific Name common name Physio-enomv Native Status Rarity Status Invasive Status
Plantago major
common plantain
H
I
Poo pratensis subsp. pratensis
Kentucky bluegrass
G
I
Polygola sanguinea
blood milkwort
H
N
Populus tremuloides
quaking aspen
D
N
Populus tremuloides
quaking aspen
D
N
Potentilia simplex
oldfield cinquefoil
H
N
Prunus pensylvanica
pin cherry
D
N
Prunus serotino
black cherry
D
N
Prunus virginiona
chokecherry
D
N
Pteridium aquillnum var, lotiusculum
bracken
H
N
Quercus alba
white oak
D
N
Quercus ellipsoidalis
northern pin oak
D
N
Quercus mocrocorpo
bur oak
D
N
Quercus rubra
northern red oak
D
N
Rhamnus cothartica
common buckthorn
D
I
RN
Rhus glabro
smooth sumac
0
N
Rosa arkonsono
prairie rose
D
N
Rubus cf ablatus
mountain blackberry
D
N
Rubus allegheniensis
Allegheny blackberry
D
N
Rubus alumnus
old field blackberry
D
N
Rubus cf. dissensus
bristly blackberry
0
N
Rubus cf. superioris
superior blackberry
D
N
Rubus ferrofluvius
Iron River blackberry
D
N
Rubus idaeus var. strigosus
red raspberry
D
N
Rubus uniformis
bristle -berry
D
N
Rudbeckia hirta var. pulcherrima
black -eyed susan
H
N
Rumex acetosella
common sheep sorrel
H
I
Solix amygdaloides
peach - leaved willow
D
N
Salix discolor
pussy willow
D
N
Solix interior
sandbar willow
D
N
Salix petiolaris
slender willow
D
N
Scirpus atrovirens
dark green bulrush
G
N
Scirpus cyperinus
woolgrass
G
N
Scutellorio lateriflora
mad dog skullcap
H
N
Seloginella rupestris
rock spikemoss
H
N
Silene latifolia
white campion
H
I
Solidago canadensis
Canada goldenrod
H
N
Solidago gigantea
giant goldenrod
H
N
Solidago nemorolis
gray goldenrod
H
N
Solidago rigido
stiff goldenrod
H
N
Solidago specioso
showy goldenrod
H
N
Sorghastmm nutans
Indian grass
G
N
Spiroea albs
white meadowsweet
D
N
Stachys tenuifolia
narrow- leaved hedge nettle
H
N
Thelypteris polustris var. pubescens
northern marsh fern
H
N
Tradescantia bracteato
bra Red spiderwort
H
N
Tragopogon pratensis
meadow goat's beard
H
I
Trientahs, borealis
starflower
H
N
Trifolium repens
white clover
H
I
Typho ongustifolia
narrow - leaved cattail
H
I
Ulmus americana
American elm
D
N
Ulmus pumila
Siberian elm
D
Urtica dioica subsp. gracilis
stinging nettle
H
Voccinium ongustifolium
lowbush blueberry
D
Verbascum thopsus
common mullein
H
Verbena hostata
blue vervain
H
MN
Vicia americana
American vetch
H
Viola canadensis var. rugulosa
rugulose violet
H
Vins ripario
wild grape
C
Zanthoxylum americanum
prickly ash
D
City of Andover
Ecological Assessment and Survey
Maple View
Township 32 North, Range 24 West, Section 11
Andover, Anoka County, Minnesota
October 6, 2015
Prepared For:
The City of Andover
Mr. Dave Carlberg
1685 Crosstown Blvd. NW
Andover. MN 55304
J01LND0VER4'-r
Prepared By:
Critical Connections Ecological Services, Inc.
21150 Ozark Trail
P.O. Box 184
Scandia, MN 55073
Critical Connections
Ecological Services, Inc.
City of Andover - Ecological Assessment of Maple View Open Space
Critical Connections Ecological Services, Inc.
Final Report
October 6, 2015
Introduction
Critical Connections Ecological Services, Inc. (CCES) was retained by the City of Andover (City) to conduct
an ecological assessment and vegetative survey of Maple View, a City owned open space. Maple View is
approximately 43.5 -acres in size. The open space is located just northeast of the intersection of Hanson
Boulevard NW and 161st avenue NW. The Maple View open space is currently landlocked by private
parcels and is adjacent to an active sod farm as well as platted and existing residential developments
(see Appendix A, Figure 1). Direct access to the open space is planned as part of future residential
developments to the south
Maple View is located within the Anoka Sand Plain Subsection of the Minnesota and Northeast Iowa
Morainal (MIM) Section and is within the Eastern Broadleaf Forest Province of Minnesota. The Anoka
Sand Plain Subsection mainly consists of flat, sandy lake plains and terraces. Topography of the area is
gently rolling. Soils are derived primary from fine sands and most are excessively drained. There are
areas of poorly drained soils which support mesic to wet plant community types.
Maple view exhibits a variety of plant community types including: dry prairie, wet meadow, wet forest,
mesic woodlands, and mesic forests. This variety of plant community types provides habitat for a
diversity of native plant and animal species.
The goals and objectives of this project were as follows:
1. Complete early and late season botanical surveys in an effort to classify native plant community
types within the City owned open space.
2. Identify, delineate, and map in a GIS based format all plant community types identified within
Maple View open space.
3. Detect and document any species listed by the State of Minnesota as Endangered, Threatened,
or Special Concern.
4. Identify any unique or sensitive priority natural features within the open space.
5. Provide management recommendations specific to the site based on the field assessments
completed as part of this project.
Project Methodology
Gathering of Site Specific Information
To begin this project, CCES first compiled existing and relevant information associated with the site
including GIS -based data layers such as recent aerial photographs (true color and infrared), 10 -foot
contours and LiDAR topographic data, soils information, and known rare species locations (if present).
Using available desktop information, CCES created GIS -based shapefiles of proposed plant community
boundaries which would likely be encountered on site. The draft boundaries were to be field verified
and edited during the site visits.
Page 1 of 10
City of Andover - Ecological Assessment of Maple View Open Space
Critical Connections Ecological Services, Inc.
Final Report
October 6, 2015
Using these available data, CCES generated field maps for Maple View open space which were printed at
a 1:3,000 scale. These field maps were utilized for note taking as well as for delineating plant
community types during the field survey portions of this project. Generated field maps contained the
project boundaries, contour lines, draft delineations of proposed plant community boundaries, as well
as soil types. Field maps helped to guide the site survey process to ensure all native plant communities
and unique areas of the site were evaluated in detail.
Field Surveys
CCES visited the Maple View open space on two separate occasions during the 2015 growing season.
Field visit dates were scheduled based on plant phenology to ensure any potential rare species could be
detected during the visits. Field dates were also scheduled to ensure plant community types could be
accurately classified based on dominant vegetation during different times during the growing season.
Each visit to the site included a floristic inventory of dominant vegetation which was completed through
a targeted meander survey effort. When areas with a higher potential to support rare or unique
features were encountered, a more focused and detailed survey effort was completed in order to detect
any inconspicuous, rare, or otherwise unique species.
Native Plant Community (NPC) classification work was also competed for the entire site using the
Minnesota DNR's Field Guide to the Native Plant Communities of Minnesota: The Eastern Broadleaf
Forest Province (2005). The classification is hierarchical, with vegetation units described at levels
ranging from broad landscape -scale ecological systems to local communities. The classification system
is driven by plant species composition and was developed from analysis of extensive field plot data. The
classification relates the vegetation units to geography and to important environmental conditions and
processes. Plant communities located within Maple View classified to the NPC Type level. Additional
information on the Minnesota DNB's Native Plant Community Classification System can be found by
visiting the following website: www.dnr. state .mn.us /npc /classification.html.
CCES ecologists also assigned a plant community quality ranking and noted the presence of any invasive
plant species. Plant community quality rankings range from an A ranking through a D ranking. An "A"
rank would indicate an excellent quality plant community with no disturbance and natural processes
intact. A "B" rank would indicate a good quality plant community with natural processes intact, and
minimal disturbances by humans and exotic species. A "C" rank would indicate a moderate quality plant
community with obvious past disturbance, but is still recognizable as a native plant community. A "D"
rank indicates a poor quality natural community with some natives present but is highly altered or
disturbed.
CCES carefully surveyed for the presence of any State - listed, rare species whenever unique habitats with
the potential to support rare species were encountered. CCES also noted the occurrence of invasive or
aggressive non - native plant species which may be targeted for future management.
Page 2 of 10
City of Andover - Ecological Assessment of Maple View Open Space
Critical Connections Ecological Services, Inc.
Final Report
October 6, 2015
During each site visit, CCES also collected high resolution digital photographs of the site for use by land
managers. Select photographs are provided in this report.
Project Results:
Native Plant Community Mapping and Descriptions:
CCES ecologists identified and mapped a total of four (4) native plant community types and one (1) non-
native community type within the Maple View open space. A figure depicting the location and extent of
each of these plant community types can be found in Appendix A, Figure 2. Plant community quality
rankings are also provided in Appendix A, Figure 3. Below, a short description of each plant community
type documented within the Maple View City open space is provided. Dominant species in each
community are listed, a full list of dominant species can be found in Appendix B.
Southern Dry -Mesic Oak (Maple) Woodland - FDs37
Approximately twelve and a half (12.5) acres within Maple View were classified as Southern Dry-Mesic
Oak (Maple) Woodland. This native plant community type was documented in upland areas with
Zimmerman dry sandy soils on 2 -6% slopes. Dominant species included Quercus rubro (red oak),
Quercus marcrocarpa (bur oak), Prunus serotino (black cherry), Tilio americans (basswood),
Zonthoxylum omericanum (prickly ash), Rhus globro (smooth sumac), Cornus racemosa (grey dogwood),
Rubus idoeus (red raspberry), Rubus ollegheniensis (tall blackberry), Rhamnus cathortico (common
buckthorn), Corylus americans (American hazelnut), Amorpho conescens (leadplant), Galium boreale
(northern bedstraw), Desmodium glutinosum (pointed- leaved tick trefoil), Carex pensylvanico
(Pennsylvania sedge), Oryzopsis asperifolio (moutain rice grass), Toxicodendron rodicons (poison ivy),
Moionthemum conadense (Canada mayflower), Durybia macrophylla (large leaved aster), Athyrium filix-
femino (lady fern), Osmundo claytoniana (interrupted fern), Pteridium oquilinum (braken fern),
Parthenocissus quinquefolia (Virginia creeper) and Vitis riparia (riverbank grape). Disturbance as a
result of past logging and timber management activities was noted within much of the Southern Dry -
Mesic Oak Woodland (FDs37) areas of Maple View. The past activities have resulted in an evenly aged
stand of scrub shrub oak and American hazelnut re- growth. This area could benefit from restoration
activities that would thin regenerating oaks and hazelnut and release herbaceous understory species.
Southern Mesic Oak - Basswood Forest - MHs38
Approximately twenty -one (21) acres within Maple View were classified as Southern Mesic Oak -
Basswood Forest (MHs38). This native plant community type was documented in upland areas of
Zimmerman fine sands (2 -6% slopes) and Lino Loamy fine sands (0 -4% slopes) . Dominant plant species
included: Quercus rubro (red oak), Tilia americans (basswood), Quercus macrocarpa (bur oak), Fraxinus
pennsylvanico (green ash), Ulmus americano (American elm), Ostrya virginiana (ironwood), Rhamnus
cothortica (common buckthorn), Ribes cynosboti (prickly gooseberry), Corylus americano (American
hazelnut), Alliaria petioloto (garlic mustard), Circaeo lutetiana (common enchanter's nightshade),
Page 3 of 10
City of Andover - Ecological Assessment of Maple View Open Space
Critical Connections Ecological Services, Inc.
Final Report
October 6, 2015
Hydrophyllum virginionum (Virginia waterleaf), Geranium maculatum (wild geranium), Desmodium
glutinosum (pointed tick trefoil), Geum conodense (white avens), Gallium aparine (cleavers), Carex
intumescens (bladders sedge), Carex rosea (starry sedge), Carex pensylvanica (Pennsylvania sedge),
Carex radioto (eastern star sedge), Trientalis borealis (starflower), and Athyrium filix femina (lady fern).
Pockets of the Mesic Oak- Basswood forest were of moderate quality with a high potential for
restoration as invasive species presence was low and the herbaceous and organic layer was still
somewhat intact.
Southern Wet Aspen Forest - WFs55
Approximately seven and a half (7.5) acres within Maple View have been classified as Southern Wet
Aspen Forest (WFs55). This plant community type was found in low -lying areas on partially drained Rifle
Mucky Peat. Dominant species included Populus temuloides (quaking aspen), Acer socchorinum (silver
maple), Betula papyrifera (paper birch), Quercus macrocorpa (bur oak), Rubus idaeus (red raspberry),
Zanthoxylum americanum (prickly ash), Rhamnus cathartico (common buckthorn), Acer negundo
(boxelder), Sombucus racemosa (red elderberry), Corylus americona (American hazelnut), Froxinus
pennsylvanica (green ash), Urtica dioica (stinging nettle), Onoclea sensibilis (sensitive fern), Corex
intumescens (bladder sedge), Persicaria omphibio (water smartweed), Oryzopsis osperifolia (mountain
rice grass), Pilea pumila (clearweed), Pholoris orundinaceo (reed canary grass), Schoenoplectus fluviotilis
(river bulrush), and Eutrochium maculatum (spotted Joe pye weed).
Northern Wet Meadow /Carr - WMn82
Approximately two (2) acres within Maple View have been classified as Northern Wet Meadow /Carr
(WMn82). Wet meadow communities were found in low -lying areas on poorly drained Markey Muck
soils. Dominant species recorded included Phaloris orundinacea (reed canary grass), Carex stricto
(tussock sedge), Corex locustris (lake sedge), Calomagrostis canadensis (Canada bluejoint), Solidago
gigantea (giant goldenrod), Cicuta maculata (water hemlock), Eupatorium purpureum (purple Joe -pye
weed), Symphyotrichum ericoides (heath aster), Polygonum amphibium (water smartweed), Urtica
dioica (stinging nettle), and Solidogo canadensis (Canada goldenrod).
Non - Native Oldfield Vegetation (NN)
Approximately one half (0.5) acre within Maple View was classified as Non - Native oldfield vegetation
(NN). The area of oldfield vegetation was located on an upland, sandy Zimmerman soil type. Dominant
species recorded within the oldfield included Elymus trochycoulus (slender wheatgrass), Conyza
canadensis (horseweed), Berteroo incona (hoary alyssum), Asclepius syrioca (common milkweed), and
Lotus corniculatus (bird's foot trefoil).
Page 4 of 10
City of Andover - Ecological Assessment of Maple View Open Space
Critical Connections Ecological Services, Inc.
Final Report
October 6, 2015
Rare Species and Sensitive Features
The Maple View open space was the most disturbed site as compared to Martin's Meadows open space
and North Woods Preserve (other City owned open spaces evaluated as part of this overall project).
After careful assessment and inventory, CCES did not find any unique or rare features to include in this
report. No State listed endangered, threatened or special concern species were detected within the
Maple View open space, although higher quality portions of the site were thoroughly surveyed. CCES
did identify several opportunities for restoration and management within the open space which are
outlined below.
Discussion
Management Recommendations:
During each field visit CCES ecologist noted areas of the site in need of future land management
activities. The following are management recommendations for Maple View:
1. Monitoring and control of non - native /invasive plant species: while completing the site
assessment work, CCES ecologists did note a number of non - native and invasive plant species
which should be targeted for treatment in the near future to prevent further spread and
displacement of native plant species. Invasive plant species noted within Maple View included
Rhamnus cothortico (common buckthorn), Zanthoxylum americanum (prickly ash), Pholaris
orundinacea (reed canary grass), Berteroo incana (hoary alyssum), Alliaria petiolate (garlic
mustard), and a small number of Toxicodendron radicans (poison ivy) populations.
Common buckthorn and prickly ash were common throughout the wooded and forested native
plant community types. Prickly ash and buckthorn can be controlled through fall or spring
prescribed burns in combination with cutting of larger shrubs followed by the application of an
appropriate herbicide. Repeated prescribed burning where appropriate helps to control the
regrowth of seedlings and depletes the existing seed bank over time. If burning is not possible,
seedlings can be controlled using an appropriate herbicide applied to the foliage in the fall,
when most native species have gone dormant.
Garlic mustard was detected in the wet forest and mesic hardwood forested areas. Garlic
mustard is a rapidly spreading herb and is a threat to woodland and forest habitats in
Minnesota. Garlic mustard is a biennial species that emerges as a small rosette in the first
growing season and flowers and sets seed in the second growing season. Garlic mustard can be
controlled through hand pulling (when infestations are small), repeated burning in the fall or
early spring, or through chemical control by applying an appropriate herbicide to the foliage in
the early spring.
Page 5 of 10
City of Andover - Ecological Assessment of Maple View Open Space
Critical Connections Ecological Services, Inc.
Final Report
October 6, 2015
Hoary alyssum is an erect annual, biennial, or short -lived plant. It was found abundantly in the
non - native oldfield area. Hoary alyssum can be controlled through repeated mowing followed
by a targeted herbicide application. Herbicide should be applied in the spring or fall when the
plant is actively growing.
Reed canary grass was confined to moist areas with poorly drained soils in wetland plant
community types and within the wet aspen forest. Removal of reed canary grass would require
a long term plan for its control as well as the implementation of follow -up restoration activities.
A long -term commitment (of five to ten years) to this effort would be needed to ensure success.
Although not overly common and abundant at Maple View, poison ivy was detected within the
forested and wooded areas of the open space. Poison ivy can be toxic and harmful to open
space visitors and users, and should therefore be targeted for removal and control.
2. In addition to invasive species control, all native plant community types within Maple View
would benefit from plant community management and restoration activities. A lack of natural
disturbance and management has resulted in overgrown plant communities lacking in native
plant diversity. At present, this open space has many of the characteristic symptoms of fire
suppression, such as overgrown wet meadows, prairies, and savannas, low plant diversity and
sedge and grass dominance in wetlands, succession to mesic (wetter) tree species within forests
and woodland /wetland transitions, and infestation of fire - intolerant invasive plant species
throughout (as mentioned above). Reintroduction of natural processes through prescribed
burning, mowing, and over seeding with appropriate native species would be essential to
maintain and /or elevate native species diversity and improve the overall ecological health of the
City owned open space. Reintroduction of appropriate native species through over seeding or
planting of live material would also be beneficial in several areas of the preserve.
The southern dry mesic oak (maple) woodland areas of Maple View would especially benefit
from thinning of overgrown shrubs which have established following past timber management
and logging activity. Native herbaceous prairie and savanna species are present in the
understory and thinning and management would help to release these species. Thinning and
management of young oak shrubs would result in a healthier stand of oak woodland in the
future.
3. Oak wilt is caused by the fungus Ceratocystis fogocearum, and may cause a threat to Maple
View. Red Oak (Quercus rubra) is most susceptible to the fungus within the preserve, but bur
oak (Quercus mocrocarpo) and white oak (Quercus alba) are also susceptible to the fungus. If
detected early, Oak Wilt can be controlled, making monitoring of the site for future infestation
Page 6 of 10
City of Andover - Ecological Assessment of Maple View Open Space
Critical Connections Ecological Services, Inc.
Final Report
October 6, 2015
issues an important task to consider. Oak wilt was not detected as a significant problem at the
Maple View open space during the 2015 field assessment.
Summary and Next Steps:
In summary, the Maple View open space contains a variety of native plant community types which
support a diversity of native plant species. Within the open space, there are several priorities and
opportunities for the implementation of prescribed restoration and management activities which would
greatly enhance the ecological integrity of Maple View's native plant communities.
As a next step, CCES recommends that the City consider the completion of a more detailed restoration
and management plan for the Maple View open space. The plan would assist the City in planning for
future restoration efforts as well as necessary long -term maintenance activities. A restoration and
management plan should include a five to ten year implementation schedule as well as an anticipated
budget for completing the tasks, helping the City to plan and prioritize management of City open spaces.
Furthermore, the restoration and management plan should address future access to the site, and future
pressures and impacts of planned residential developments adjacent to the Maple View open space. A
restoration and management plan should also include an evaluation of potential grant programs and
cost -share opportunities which are likely available to the City. Outside funding sources can provide
financial support for completing initial restoration efforts of City owned open spaces.
Page 7 of 10
City of Andover - Ecological Assessment of Maple View Open Space
Critical Connections Ecological Services, Inc.
Final Report
October 6, 2015
SELECT SITE PHOTOGRAPHS FROM MAPLE VIEW OPEN SPACE
Photograph 1: Example of Southern Mesic Oak - Basswood Forest (MNs38) at Maple View.
Photograph 2: Example of Southern Wet Aspen Forest (WFsSS) at Maple View.
Page 8 of 10
City of Andover - Ecological Assessment of Maple View Open Space
Critical Connections Ecological Services, Inc.
Final Report
October 6, 2015
Photograph 3: Example of a Northern Wet Meadow /Carr (WMn82) at Maple View.
Photograph 4: Example of overgrown Southern Dry-Mesic Oak (Maple) Woodland (FDs37).
Page 9 of 10
City of Andover - Ecological Assessment of Maple View Open Space
Critical Connections Ecological Services, Inc.
Final Report
October 6, 2015
Photograph 5: Example of overgrown Southern Dry-Mesic Oak (Maple) Woodland (FDs37).
Photograph 6: Example of oldfield vegetation (NN) at Maple View.
Page 10 of 10
APPENDIX A
FIGURES
ANOKA1° " ?
�.
HENNEPIN ].;.A INO CN
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SCOTT DAKOTA �I
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Appendix A, Figure 1
Project Location Map
City of Andover - Maple View
2015 Ecological Assessment and Survey
4
Critical Connections
.__. EMfogiml Service^, Inc.
Q Maple View Open Space Boundary
Miles
0 0.25 0.5
I
co
O 1 f! •Fi ... •r f•
\
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417
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Appendix A, Figure 2-
Native Plant Community Types
City of Andover - Maple View
\
2015 Ecological Assessment and Survey
Native Plant Community Types
r
Y
- Northern Wet MeadowlCarr (WMn82)
_ Olditeld Vegetation (Non - Native)
0 Southern Dry-Mesic Oak (Maple) Woodland (FD537)
- Southern Mesic Oak - Basswood Forest (MHs3S)
-
® Southern Wet Aspen Forest (WFs55)
Maple View Open Space Boundary
M
I
a 1m 2oc aaa A
'S��y�l 1
r�nmr ro..�rw,
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Appendix A, Figure 3
Native Plant Community Quality Ranking
City of Andover - Maple View
2015 Ecological Assessment and Survey
Maple View Quality Rankings
® Moderate Quality Plant Community (C)
- Poor Ouallty Plant Community (0)
- Non - Native unranked Community (NN)
Native Plant Community Types
OMaple View Open Space Boundary
O F,el
100 10!' HOC
APPENDIX B
DOMINANT SPECIES LIST
Maple View - City of Andover - Dominant Species List - 2015
Column Definition
Nomenclature follows that of published volumes
of "Flora of North America" (FNA). For those
MN DNR Scientific Name families not yet published by FNA, nomenclature
follows that of Gleason & Cronquist's "Manual
of Vascular Plants of Northeastern United states
and Canada ".
Common name
The preferred MNDNR common name.
D
B = broadleaf evergreen, D = broadleaf
deciduous, E = needleleof evergreen, G =
Physiognomy
graminoid, H= forb, t = lichens and moss, C=
D
climber, K = stem succulent, X = epiphyte, F =
floating aquatic, S= submerged aquatic
Native Status
N = native to the state of MN, I = Introduced, U
D
= Undetermined
State Rarity Status: E = Endangered, T=
Rarity Status
Threatened, SC= Special Concern, W =Watch
H
List, H = Historical
FN = Federal noxious weed, Sly = State
prohibited noxious weed, RN = State restricted
Invasive Status noxious weed, PI = DNR Prohibited invasive
species, PS = State prohibited weed seed, RS =
State restricted weed seed
MN DNR Scientific Name Common name Physiognomy Native Status Rarity Status Invasive Status
Acernegundo
box elder
D
N
Acerrubrum
red maple
D
N
Acersoccharinum
silver maple
D
N
Actoea rubro
red baneberry
H
N
Adiontumpedatum
maidenhair fern
H
N
Ageratina oltissima var.
white snakeroot
H
N
Agrostis gigantea
redtop
G
I
Allioria petiolate
garlic mustard
H
I
SIN
Allium tricoccum
wild leek
H
N
Ambrosia ortemisiifolia
common ragweed
H
N
Amorpho conescens
leadplant
D
N
Amphicorpaeo bracteato
hog peanut
H
N
Anemone conadensis
Canada anemone
H
tJ
Aquilegio conadensis
columbine
H
N
Aralia nudicaulis
wild sarsaparilla
H
N
Arctium minus
common burdock
H
I
Arisoemo triphyllum
Jack -in- the - pulpit
H
N
Asorum conadense
wild ginger
H
N
Asclepias incornata var.
swamp milkweed
H
N
Asclepias syrioca
common milkweed
H
N
Athyrium fifix femino var.
lady fern
H
N
Berteroo incona
hoary alyssum
H
I
RS
Betula popyrifero
paper birch
D
N
Boehmeria cylindrica
false nettle
H
N
Bolboschoenus fluviotilis
river bulrush
G
N
Brassica rapo
field mustard
H
I
Bromus inermis
smooth brome
G
I
Calomagrostis conadensis
bluejoint
G
N
Campanula americans
tall bellflower
H
N
Corex blonda
charming sedge
G
N
Carex intumescens
bladder sedge
G
N
Carex lacustris
lake sedge
G
N
Corex lacustris
lake sedge
G
N
Corex pensylvanica
Pennsylvania sedge
G
N
Carex rodiato
eastern star sedge
G
N
Carex retrorso
retrorse sedge
G
N
Corex stipato var. stipoto
awl- fruited sedge
G
N
Corex stricta
tussock sedge
G
N
Corex tribuloides var,
blunt broom sedge
G
N
Celtis occidentalis
hackberry
D
N
Cirsium arvense
Canada thistle
H
I
SN,PS
Convolvulus orvensis
field bindweed
H
I
PS
Cornus rocemoso
gray dogwood
D
N
Corylus omericona
American hazelnut
D
N
Desmodium glutinosum
pointed - leaved tick trefoil
H
N
Echinochloo crus -golh
cockspur barnyard grass
G
I
Echinocystis loboto
wild cucumber
H
N
Elymus virginicus vor. virginicus
Virginia wild rye
G
N
Equisetum orvense
field horsetail
H
N
Eutrochium maculatum
spotted Joe pye weed
H
N
Frogorio virginiona
common strawberry
H
N
Froxinus pennsylvanica
green ash
D
N
Galium aparine
cleavers
H
N
Golium boreale
northern bedstraw
H
N
Geranium moculotum
wild geranium
H
N
Geum canodense
white avens
H
N
Glechoma hederacea
creeping charlie
H
I
Hackelio virginiona
Virginia stickseed
H
N
Hydrophyflum virginionum var.
Virginia waterleaf
H
N
Ilex verticilloto var. verticillata
winterberry
D
N
luniperus virginiona vor.
eastern red cedar
E
N
Lactuca canodensis
Canada wild lettuce
H
N
Loportea canodensis
woodnettle
H
N
Leersio oryzoides
rice cut grass
G
N
Lespedeza copitato
round - headed bush clover
H
N
Lithospermum lotifolium
American gromwell
H
N
Lycopus americanus
cut- leaved bugleweed
H
N
Maianthemum canodense
Canada mayflower
H
N
Mehlotus officinalis
yellow sweet clover
H
I
Onoclea sensibdis
sensitive fern
H
N
Oryzopsis asperifolia
moutain rice grass
G
N
Osmorhiza cloytonii
Clayton's sweet cicely
H
N
Osmundo claytoniano
interrupted fern
H
N
Ostrya virginiana
ironwood
D
N
Parthenocissus quinquefolia
Virginia creeper
C
N
Parthenocissus vitacea
woodbine
C
N
Penthorum sedoides
ditch stonecrop
H
N
Persicario amphibia
water smartweed
F, H
N
Persicaria sogittata
arrow- leaved tearthumb
H
N
Phaloris orundinaceo
reed canary grass
G
I
Phleum pratense subsp.
timothy
G
I
Pileapumila
dwarf clearweed
H
N
Poo protensis subsp. pratensis
Kentucky bluegrass
G
I
Polygolo polygoma var.
racemed milkwort
H
N
Populus deltoides subsp.
cottonwood
D
N
Populus tremuloides
quaking aspen
D
N
Potentilla simplex
oldfield cinquefoil
H
N
Prunus serotina
black cherry
D
N
Prunus virginiana
chokecherry
D
N
Pteridium aquilinum var.
bracken
H
N
Quercus mocrocarpo
bur oak
D
N
Quercus rubro
northern red oak
D
N
Rhamnus cothortica
common buckthorn
D
I
RN
Rhus glabra
smooth sumac
D
N
Ribes omericanum
wild black currant
D
N
Rubus allegheniensis
Allegheny blackberry
D
N
Rubus idoeus var. strigosus
red raspberry
D
N
Rubus occidentalis
black raspberry
D
N
Rudbeckio hirto var.
black -eyed Susan
H
N
Rudbeckio lociniata var.
tall coneflower
H
N
Solixinterior
sandbar willow
D
N
Sombucus conodensis var.
common elder
D
N
Sombucus rocemoso var.
red - berried elder
D
N
Setaria pumila subsp. pumilo
yellow foxtail
G
Solidago canadensis var.
Canada goldenrod
H
N
Solidago gigantea
giant goldenrod
H
N
Spartinapectinota
prairiecordgrass
G
N
Symphyotrichum ericoides
heath aster
H
N
Thalictrum dasycorpum
tall meadow -rue
H
N
Thelypteris palustris var.
northern marsh fern
H
N
Tilia americans
basswood
D
N
Tragopogon dubius
yellow goat's beard
H
I
Ulmus americona
American elm
D
N
Urtica dioica subsp. gracilis
stinging nettle
H
I
Verbascum thapsus
common mullein
H
I
Verbena hostata
blue vervain
H
N
Vernonia fasciculato
bunched ironweed
H
N
Veronicostrum virginicum
Culver's root
H
I N
Vitis riparia
1wild grape
C
N
Zanthoxylum omericanum
I prickly ash
D
N
N OVE:
D
1685 CROSSTOWN BOULEVARD N.W. • ANDOVER, MINNESOTA 55304 • (763) 755 -5100
FAX (763) 755 -8923 • WWW.CI.AN DOVE R.MN.US
TO: Andover Open Space Advisory Commission
FROM: David L. Carlberg, Community Development Director
SUBJECT: 2016 Meeting Schedule — Select Dates
DATE: October 14, 2015
INTRODUCTION
The Open Space Advisory Commission is asked to discuss a future work
plan/meeting schedule of the Open Space Advisory Commission for 2016.
DISCUSSION
Now that the open space land purchases have been completed, the
Commission is asked to set the 2016 meeting schedule. The discussion of
the Commission at the September 9`" meeting focused on a quarterly meeting
schedule and conducting a site visit of an open space prior to each meeting.
Respectfully submitted,
-C C;/
l
David L. Carlberg
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