Metro Vancouver Urban Forest Climate Adaptation Initiative Amelia Needoba Principal & Senior Urban Forester
Vulnerability
A System Already Under Stress • Below ground (e.g., soil volume, soil quality, utilities) • At ground (e.g., permeability) • Above ground (e.g., utilities, structures)
A System Already Under Stress When properly planted and cared for: • Long-lived urban trees generate ecosystem services that increase our resilience to climate change If neglected, we risk: • Disservices and increasing emissions due to frequent tree removal and replacement
Risk and Vulnerability to Climate Change Reduced growth and increased mortality due to… Reduced water availability and increased length of drought Waterlogging of soils and freshwater flooding Longer wildfire seasons and increased frequency and duration of wildfire More hot days that exceed species specific growth optimums More frequent and severe pest outbreaks and variety of pests More salt-water inundation during storm surges Increasing diversity of species tolerant of Vancouver’s climate due to… Longer growing season, milder winters and fewer damaging frosts
Reduce Vulnerability Now • Soil & Planting Infrastructure Guidelines • Water Management Guidelines • Tree Management Guidelines 6
Plan to Adapt to Future 1. Species Selection Framework 2. Species Selection Database 3. Design Guidebook 7
Species Selection Framework
Species Database • Initially 140 species Pacific Northwest • Mean coldest month • Expanded to 300 species temperature • Summer climatic moisture deficit • Analyzed more than 900,000 Evapotranspiration tree inventory records from Northern California • Mean annual 21 North American cities temperature Growing season • Southern California Mean warmest • month temperature
VERY SUITABLE: 66 Species SUITABLE: 160 Species MARGINAL: 79 species GLEDITSIA TRIACANTHOS, FRAXINUS PENNSYLVANICA, ACER PLATANOIDES, ACER RUBRUM, PRUNUS SERRULATA, PRUNUS CERASIFERA, THUJA PLICATA, CERCIDIPHYLLUM JAPONICUM, FAGUS QUERCUS COCCINEA, FRAXINUS ORNUS, CRATAEGUS X LIQUIDAMBAR STYRACIFLUA, PSEUDOTSUGA MENZIESII, CARPINUS BETULUS, SYLVATICA, FRAXINUS AMERICANA, QUERCUS LAVALLEEI, PYRUS CALLERYANA, PINUS NIGRA, CERCIS PARROTIA PERSICA, ACER CAMPESTRE, ACER X FREEMANII, TILIA X EUCHLORA, PALUSTRIS, MAGNOLIA KOBUS, ACER TRUNCATUM, CANADENSIS, ROBINIA PSEUDOACACIA, GINKGO PRUNUS X YEDOENSIS, QUERCUS RUBRA, TILIA CORDATA, STYRAX JAPONICUS, ACER PALMATUM, CORNUS KOUSA, BETULA PENDULA, BILOBA, CRATAEGUS X MORDENENSIS, CEDRUS ULMUS AMERICANA, LIRIODENDRON TULIPIFERA, ALNUS RUBRA, AESCULUS NYSSA SYLVATICA, SYRINGA RETICULATA, ACER DEODARA, SORBUS ARIA, QUERCUS ACUTISSIMA, HIPPOCASTANUM, QUERCUS ROBUR, ACER GRISEUM, ZELKOVA SERRATA, ACER MACROPHYLLUM, METASEQUOIA GLYPTOSTROBOIDES, PINUS SYLVESTRIS, PINUS CONTORTA, PINUS FLEXILIS, PSEUDOPLATANUS, FRAXINUS EXCELSIOR, MALUS X ZUMI, MALUS FLORIBUNDA, SORBUS AUCUPARIA, BETULA PAPYRIFERA, TSUGA CELTIS OCCIDENTALIS, GYMNOCLADUS DIOICUS, AESCULUS X CARNEA, TILIA AMERICANA, ACER CAPPADOCICUM, PRUNUS SARGENTII, HETEROPHYLLA, CORNUS NUTTALLII, POPULUS CRATAEGUS CRUS-GALLI, QUERCUS SHUMARDII, PICEA OMORIKA, CRATAEGUS LAEVIGATA, SEQUOIADENDRON GIGANTEUM, BALSAMIFERA, CHAMAECYPARIS NOOTKATENSIS, PICEA CALOCEDRUS DECURRENS, CATALPA SPECIOSA, RHUS CARPINUS JAPONICA, PRUNUS AVIUM, STEWARTIA PSEUDOCAMELLIA, PRUNUS ABIES, ACER CIRCINATUM, CHAMAECYPARIS TYPHINA, QUERCUS MACROCARPA, NYSSA SINENSIS, SUBHIRTELLA, CHAMAECYPARIS PISIFERA, ACER SACCHARINUM, AMELANCHIER X LAWSONIANA, POPULUS TREMULOIDES, CARPINUS KOELREUTERIA PANICULATA, EUCOMMIA ULMOIDES, GRANDIFLORA, CRATAEGUS PHAENOPYRUM, THUJA OCCIDENTALIS, CORNUS CAROLINIANA, ULMUS DAVIDIANA, QUERCUS PHELLOS, PRUNUS LUSITANICA, PINUS PONDEROSA, PINUS FLORIDA, CATALPA BIGNONIOIDES, ILEX AQUIFOLIUM, PICEA PUNGENS, QUERCUS CORNUS X RUTGERSENSIS, CORNUS X NUTTALLII, BANKSIANA, JUNIPERUS VIRGINIANA, FRAINETTO, ACER SACCHARUM, POPULUS NIGRA, CLADRASTIS KENTUKEA, MALUS BETULA JACQUEMONTII, ABIES GRANDIS, PICEA PHELLODENDRON AMURENSE, ARBUTUS MENZIESII, PUMILA, CRATAEGUS DOUGLASII, PRUNUS VIRGINIANA, PRUNUS SALICINA, PRUNUS SITCHENSIS, SORBUS ALNIFOLIA, ULMUS GLABRA, PINUS MUGO, FICUS CARICA, QUERCUS GARRYANA, X BLIREANA, DAVIDIA INVOLUCRATA, ACER NEGUNDO, TAXODIUM DISTICHUM, LIRIODENDRON CHINENSE, SALIX BABYLONICA, SORBUS CUPRESSUS X LEYLANDII, ALBIZIA JULIBRISSIN, ULMUS PUMILA, MAGNOLIA GRANDIFLORA, HIBISCUS SYRIACUS, CEDRUS AMERICANA, STYRAX OBASSIA, MAGNOLIA DENUDATA, QUERCUS ALBA, PINUS THUNBERGII, PISTACIA ATLANTICA, CORYLUS COLURNA, CORNUS MAS, PICEA GLAUCA, LABURNUM X JUGLANS NIGRA, MAGNOLIA X KEWENSIS, MAGNOLIA X CHINENSIS, CUPRESSUS MACROCARPA, JUNIPERUS WATERERI, QUERCUS BICOLOR, FRAXINUS VELUTINA, STEWARTIA MONADELPHA, SOULANGEANA, PINUS STROBUS, LARIX DECIDUA, ACER CHINENSIS, ARBUTUS UNEDO PRUNUS EMARGINATA, TILIA X EUROPAEA, CHAMAECYPARIS OBTUSA, PINUS PENSYLVANICUM, MAGNOLIA 'GALAXY', MAGNOLIA PARVIFLORA, QUERCUS ALBA X ROBUR, RHAMNUS PURSHIANA, SOPHORA JAPONICA, STELLATA, BETULA NIGRA, SEQUOIA SEMPERVIRENS, CORNUS CONTROVERSA, CRATAEGUS MONOGYNA, ACER NIGRUM, JUGLANS REGIA, BETULA POPULIFOLIA, JUGLANS CINEREA, MAGNOLIA AMELANCHIER CANADENSIS, ULMUS PROCERA, CASTANEA SATIVA, TAXUS BACCATA, SIEBOLDII, MALUS FUSCA, FAGUS GRANDIFOLIA, CORYLUS AVELLANA, MALUS BACCATA, ACER TATARICUM, AMELANCHIER LAEVIS, PRUNUS PADUS, TSUGA CANADENSIS, HALESIA ACER TRIFLORUM, POPULUS ALBA, NOTHOFAGUS ANTARCTICA, SALIX X CAROLINA, ACER CAPILLIPES, AESCULUS PAVIA, PINUS SEPULCRALIS, PTEROCARYA STENOPTERA, PRUNUS SEROTINA, ARAUCARIA MONTICOLA, MAGNOLIA X LOEBNERI, THUJOPSIS ARAUCANA, ABIES CONCOLOR, SALIX SCOULERIANA, TILIA TOMENTOSA, DOLABRATA, SALIX MATSUDANA, FRAXINUS LATIFOLIA, CRYPTOMERIA JAPONICA, TRACHYCARPUS FORTUNEI, PRUNUS DOMESTICA, CERCIS TSUGA MERTENSIANA, PRUNUS LAUROCERASUS, CHINENSIS, PYRUS COMMUNIS, MALUS DOMESTICA, TAXUS BREVIFOLIA, TILIA AESCULUS FLAVA, MAGNOLIA VIRGINIANA, LAURUS PLATYPHYLLOS, OSTRYA VIRGINIANA, ACER JAPONICUM, SORBUS X THURINGIACA, NOBILIS, BETULA UTILIS, ALNUS RHOMBIFOLIA, SYRINGA VULGARIS, CASTANEA MOLLISSIMA, PAULOWNIA TOMENTOSA, ULMUS X AMELANCHIER ARBOREA, PLATANUS OCCIDENTALIS HOLLANDICA, ACER MIYABEI, MANGLIETIA INSIGNIS, PRUNUS SERRULA, AILANTHUS ALTISSIMA, OXYDENDRUM ARBOREUM, MORUS ALBA, ABIES PROCERA, MALUS SYLVESTRIS, LABURNUM ANAGYROIDES, MALUS TRANSITORIA, FRAXINUS ANGUSTIFOLIA, PRUNUS AMERICANA, PYRUS SALICIFOLIA, PRUNUS ARMENIACA, CERCIS SILIQUASTRUM, PRUNUS CAROLINIANA, OSTRYA CARPINIFOLIA, CLERODENDRUM TRICHOTOMUM, ULMUS PARVIFOLIA, BETULA ALLEGHANIENSIS, ALNUS CORDATA, PRUNUS CERASUS, PINUS RADIATA
Using the Design Guidebook and Species Database
Prioritize locations to plant 12
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Use the Design Guidebook • Select typology option • Identify adaptation benefits: Shading, cooling and stormwater • Assess constraints and species selection considerations • Select targets for canopy, soil volume, spacing and permeability 14
Use the Species Database • Tree characteristics • Suitable locations • Soil volume • Tolerance • Risks • Practitioner comments • Habitat value • Present and future climate suitability 15
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Thank you!
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