REVIEW OF VEGETATION SURVIVORSHIP & SPECIES SELECTION FOR GREEN STORMWATER INFRASTRUCTURE SYSTEMS RACHEL AHERN STREIT | CHPLANNING GSI MAINTENANCE | GREEN CITY, CLEAN WATERS
WHY, HOW, & WHAT.
WHY, HOW, & WHAT. why study survivorship in SMPs?
WHY, HOW, & WHAT. how we’re collecting our data
WHY, HOW, & WHAT. a vegetation inventory design recommendations a recommended plant list
tree trench stormwater bump-out green roof stormwater planter rain garden basin
DRY WET
POLLUTANTS & TOXINS DAMAGE BY VEHICLES EROSION SEDIMENT INVASIVE SPECIES SANDY SOILS DRY WET VANDALISM
plant replacement events at SMP sites in the past year 63 trees (5%) 52 shrubs (4%) 1,707 perennials (5-10%)
233 vegetation surveys this year 37 rain gardens, bump-outs, and planters 196 tree trenches
233 vegetation surveys this year 37 rain gardens, bump-outs, and planters 196 tree trenches # INDIVIDUALS AREA (SF) TREE CALIPER HEALTH STATUS % COVER
PP1 MAINTENANCE MAPS WITH PHOTOPOINTS PP2 PP2>
FIELD NOTES ARCGIS MAPS
Population Size 100 150 200 250 300 50 0 260 Acer SMP TREE INVENTORY 177 Prunus 81 78 75 73 70 65 Cercis Gleditsia Ulmus Syringa Quercus Platanus 45 41 39 32 31 26 22 20 18 17 15 12 11 10 9 8 8 8 7 6 5 5 4 4 3 3 3 2 2 1 1 1 1 1 1 1 1 Crataegus Tilia Cladrastis Amelanchier Zelkova Celtis Cornus Ginkgo Malus Liquidambar Lagerstroemia Cercidiphyllum 200 20 100 0 Gymnocladus 0 0 Genus Betula 17 136 Maackia 50 Prunus (Cherry) Species Diversity Magnolia Quercus (Oak) Species Diversity Acer (Maple) Species Diversity 11 Carpinus 31 Eucommia 34 Koelreuteria 10 Aesculus 25 Metasequoia 32 8 Laburnum 18 Ulmaceae Robinia 25 6 Pyrus 16 Taxodium 6 22 Chionanthus Fagus 15 Carya 4 Fraxinus 7 11 Phellodendron 3 Corpinus 5 Liriodendron 5 3 Oxydendrum Juniperus 2 Ilex 2 2 Nyssa
SMP Tree Health Status 100% 90% 80% 70% % of Genera 60% 50% 40% 30% 20% 10% 0% Cerci Crat Clad Amel Liqui Lage Gym Acer Prun Cerci Gled Ulm Syrin Quer Plata Zelk Celti Corn Gink Malu diph Betu aegu Tilia rasti anch dam rstro nocl us s itsia us ga cus nus ova s us go s yllu la s s ier bar emia adus m Unhealthy 16 9 4 4 7 7 3 3 2 4 2 0 0 0 1 0 0 5 0 4 0 0 Dead 5 2 0 1 1 1 0 0 3 0 4 1 0 0 2 0 2 0 0 0 5 0 Healthy 222 155 77 69 67 65 64 62 28 37 28 30 31 26 19 18 16 12 15 8 6 10
SMP Tree Vandalism & Health by Site Type 16% 14% 12% % of Site Type Total 10% 8% 6% 4% 2% 0% Unhealthy Vandalized Dead School Site Recreation Site All Other Sites
Herbaceous Plant Inventory 1600 1400 Estimated Sq. Ft. 1200 1000 800 600 400 200 0 Herbaceous Genus Rudbeckia fulgida Asclepias incarnata S. novae-angliae Hibiscus coccineus Monarda didyma ‘Goldstrum’ ‘Purple Dome’
The Soft Sites: Plant Inventory 9000 8000 Estimated Sq. Ft. 7000 6000 5000 4000 3000 2000 1000 0 Groundcover Genus/Family Pennisetum ‘Hameln’ Carex stricta Panicum ‘Shenandoah’ Juncus effusus Calamagrostis acutiflora
The Soft Sites: Plant Inventory 3000 2500 Estimated Sq. Ft. 2000 1500 1000 500 0 Small Woody Genus Cornus alba Viburnum nudum Rhus aromatica ‘Gro-Low’ Itea virginiana Aronia ‘Brilliantissima’
Stormwater Bump-out: Plant Competition 2014 2015
Stormwater Bump-out: Plant Competition 3000 Area (Square Feet) 2500 2000 1500 2014 1000 2015 500 0 Plant (Genus)
Stormwater Bump-out: Plant Competition 3000 Area (Square Feet) 2500 2000 1500 2014 1000 2015 500 0 Plant (Genus)
Stormwater Bump-out: Plant Competition 3000 Area (Square Feet) 2500 2000 1500 2014 1000 2015 500 0 Source of Stormwater Plant (Genus) Phragmites Bump-out
Stormwater Bump-out: Plant Competition 3000 Area (Square Feet) 2500 2000 1500 2014 1000 2015 500 0 Source of Stormwater Plant (Genus) Phragmites Bump-out
Rain Gardens: Site Variability Area 2 Number of Individuals 30 25 20 15 2012 10 2014 5 0 2012 2015 Plant (Genus) Area 3 Number of Individuals 25 20 15 10 2012 5 2014 0 Plant (Genus) 2012 2015
Rain Gardens: Site Variability Area 2 Number of Individuals 30 25 20 15 2012 10 2014 5 0 2012 2015 Plant (Genus) Area 3 Number of Individuals 25 20 15 10 2012 5 2014 0 Plant (Genus) 2012 2015
Rain Gardens: Effective Planting Schemes Platanus x acerifolia Fotherfilla fardenii ‘Mount Airy’ Itea virginia ‘Henry’s Garnet’ Aster divaricatus Chasmanthium latifolium Echinacea purpurea Phlox paniculata ‘David’ Panicum vigatum 2014 2015
Philadelphia’s Native Plant Nursery COLLECTION GERMINATION CONTAINERS Photos courtesy of Maximillian Blaustein, Philadelphia Parks & Recreation
RACHEL AHERN STREIT RACHEL.AHERN@PHILA.GOV http://phillywatersheds.org/doc/Landscape_Manual_2014.pdf
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