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    State of the PrairieNovember 18, 2011

    Designing Prairies in Urban Areas

    Emily MandersonLBJWC Ecosystem Design Group

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    Ecosystem Design GroupEcosystem ServicesConsulting Case Studies

    Plant Research

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    Reduce&Green&House&Gases&:&&Sequester&Carbon&:&Clean&Air&:&Clean&Water&:&Reduce&Soil&Erosion&:&Create&Pollinator&Habitat&:&Recycle&Waste&:&Support&Human&Well=Being&

    Educate

    ApplyInvestigate

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    Ecosystem Services: services naturalsystems provide for free but are

    necessary for sustaining life

    In 1997 the economic value of theseservices was estimated $33Trillionannually roughly equivalent to entireGlobal GNP (Costanza et al. 1997)

    Ecosystem Services

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    Wall&Street&Journal&&June&15&2009&

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    =140&

    =120&

    =100&

    =80&

    =60&

    =40&

    =20&

    0&

    20&

    40&

    Carb

    ondensity(kgCm-2)

    after Amthor et al 1998

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    Its not only about

    carbon

    Air qualityWater qualityWater quantityHeat

    Energy useQuality of life

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    Installaon&to&Maintenance&

    & invasive&species&& atypical&process&

    Residents&as&police&

    Extending&the&funcon&of&

    the&prairie&

    Dont&mow&our&prairie!&

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    &&&2009&Michael&Van&Valkenburgh&Associates,&Inc.&

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    GWBPC Design Team

    Michael Van Valkenburgh, Inc. Landscape Architect Robert A.M. Stern LLP Architects URS Corporation Civil Engineers Jeffrey L Bruce Irrigation Consultant Olosson Associates Soils Scientist Sustainable Growth Texas Organic Soils Specialist Ecosystem Design Group Ecology Consultant

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    GWBPC Project timeline

    Schematic Design 30 March-1 May 2009 Design Development 1 May 09-1 Nov 2009 Construction Documentation 1 Nov 2009-15 Aug 2010 Bidding and Negotiation 15 Aug 2010- 1 Nov 2010 Construction Administration 1 Nov 2010- 1 Feb 2013

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    Design Concept

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    North (SMU) vsSouth (Crawford) of

    Building

    Users of the site andcenter circulation

    Emblematic Prairie Habitat Types

    Tall Grass Mid Grass Wildflower

    Meadow Native turf grass

    sun/shade Seeps Floodplain forest

    2009&Michael&Van&Valkenburgh&Associates,&Inc.&

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    2009&Michael&Van&Valkenburgh&Associates,&Inc.&

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    Reference&sites&

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    Mock Up

    Plugs, seed, sod,topography, soil types,irrigation, establishment,

    maintenance, aesthetics

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    2009&Michael&Van&Valkenburgh&Associates,&Inc.&

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    Research

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    0

    1

    2

    3

    4

    56

    1 sp(nn)

    1 sp (n) 2 spp(n)

    4 spp(n)

    Leaf density

    Simmons, Bertlesen, Windhager & Zafian. (2011)

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    0

    100

    200

    300

    400

    500

    600

    1 sp (nn) 1 sp (n) 2 spp (n) 7 spp (n)

    WeedDensity(m-2)

    Simmons, Bertlesen, Windhager & Zafian. (2011)

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    Blue gramaPoverty dropseed Buffalograss

    Texas grama Hairy grama

    Hairy

    tridens

    Hairy

    grama

    Curly mesquite

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    Hilaria jamesiiHilaria belangeri

    Curly mesquite species range

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    11th&Avenue&Townhouses&North&County&Housing&Foundaon&Escondido,&CA&

    Research

    Simmons et al. 2008

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    20

    4060

    80

    100

    120

    140

    160

    180

    200

    0 4 8 12 16 20 24

    Black

    Green

    Roof&temperature&in&the&summer&&

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    0

    12

    3

    4

    5

    6

    7

    0 20 40 60 80 100 120 140 160

    Black

    Green 1

    Green 2

    Water&runoff&for&2&rain&event&&

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    0&

    2000&

    4000&

    6000&

    8000&

    10000&

    A& B& C& D&E& F&

    Shrub&& &Grasses&&&

    Forb&& &Succulent&& &

    Proporonal&&

    Growth&Index&(%)&

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    Vancouver Convention Center. Daily Journal of Commerce

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    surely it is not wrong to hope that modern man

    modern, urban, mechanized manwill somehowrecapture that sense of balance between his life and hisenvironment - before it is too late.

    Lady Bird Johnson