GREEN VEINS a proposal for a regional ecological corridor network - PowerPoint PPT Presentation

GREEN VEINS a proposal for a regional ecological corridor network for Metro Vancouver Jamie Vala

Landscape Ecology Patch Corridor Matrix GREEN VEINS

Current Condition Disconnected Local Extinction Further Local Habitat Patches Extinction Time GREEN VEINS

Species at risk by habitat type in Metro Vancouver Birds Estuary Plants Fish Lake Other Marine Insects Mammals River Terrestrial Wetland GREEN VEINS

Proposed Condition Connected Habitat Local Local Extinction Patches Recolonization Time GREEN VEINS

Indicators of Healthy Habitats Open water Great Blue Heron Black Bellied Plover Skunk Cabbage Coho Salmon Ardea herodias Pluvialis squatarola Lysichiton americanus Oncorhynchus kisutch Forest Douglas Squirrel Great Blue Heron Red Breasted Nuthatch Northwest Salamander Tamiasciurus douglasii Ardea herodias Sitta canadensis Ambystoma gracile Wetland Great Blue Heron Red Legged Frog Marsh Wren Skunk Cabbage Ardea herodias Rana aurora Cistothorus palustris Lysichiton americanus GREEN VEINS

Ecosystem Services Soil Generation Aesthetic and Cultural Flood Mitigation Decomposition Distribution of Water Recreation Food Seed Dispersal Cleansing of Water Medicinal Resources Habitat Pollination Infiltration of Water Climate Regulation GREEN VEINS

stage 1 Network Delineation Network Refinement stage 3 stage 2 Selection of Identification of Corridor Swath Critical Constraints Corridor Mitigation of Delineation Critical Constraints Corridor Refinement GREEN VEINS

Corridor Swath Selection Process Critical Corridor Swaths P Species at risk S Waterways Existing Connectivity C (Existing Habitat types Existing Habita GREEN VEINS

Complete Corridor Swath Network Proposed Corridors N GREEN VEINS

stage 1 Network Delineation Network Refinement stage 3 stage 2 Selection of Identification of Corridor Swath Critical Constraints Corridor Mitigation of Delineation Critical Constraints Corridor Refinement GREEN VEINS

Criterion for Critical Corridor Swath Network Critical Habitat Types largest patches most productive patches representative habitat types GREEN VEINS

Critical Corridor Swath Network Riverine Coastal Terrestrial N GREEN VEINS

stage 1 Network Delineation Network Refinement stage 3 stage 2 Selection of Identification of Corridor Swath Critical Constraints Corridor Mitigation of Delineation Critical Constraints Corridor Refinement GREEN VEINS

Criteria for Single Corridor Swath Selection Variety of land uses Important patches Habitat types GREEN VEINS

Single Corridor Swath Selection Westwood Plateau - Old growth forest Burnaby Mountain - Forest Central Valley - Burnaby Lake Agricultural Land Selected Fraser River Estuary Terrestrial Corridor N GREEN VEINS

stage 1 Network Delineation Network Refinement stage 3 stage 2 Selection of Identification of Corridor Swath Critical Constraints Corridor Mitigation of Delineation Critical Constraints Corridor Refinement GREEN VEINS

Criteria for Corridor Placement Presence of existing vegetation Fewest barriers to movement Ownership GREEN VEINS

Decision process for corridor placement Option C Option A Option B Corridor Barriers Zoning (% Options Public) Option B A 6 ~ 20% B 2 ~ 80% GREEN VEINS C 3 ~ 60 %

Placement of the Corridor within the Swath Westwood Plateau Burrard Inlet Coquitlam Burnaby Burnaby Lake North Arm of the Fraser River Richmond South Arm of the Fraser River Corridor Swath (1000 m) Fraser River Estuary GREEN VEINS Corridor (100 m)

stage 1 Network Delineation Network Refinement stage 3 stage 2 Selection of Identification of Corridor Swath Critical Constraints Corridor Mitigation of Delineation Critical Constraints Corridor Refinement GREEN VEINS

Corridor Analysis - Vegetation Designated park land Other greenspace GREEN VEINS

Corridor Analysis - Barriers Minor Barrier Major Barrier GREEN VEINS

Corridor Analysis - Habitat Types Agricultural Shrub Open space Young forest Old forest Fresh water GREEN VEINS

Corridor Analysis - Zoning Park Agricultural Residential Commercial Industrial GREEN VEINS

Corridor Statistics Habitat types (%) ~ 90% vegetated 31.5 agricultural 13 shrub 9 open space 12 young forest 23 old forest 1.5 freshwater 9 built 13 major barriers ~50% publicly owned 20 minor barriers GREEN VEINS

Critical Constraints Barriers Intactness GREEN VEINS

stage 1 Network Delineation Network Refinement stage 3 stage 2 Selection of Identification of Corridor Swath Critical Constraints Corridor Mitigation of Delineation Critical Constraints Corridor Refinement GREEN VEINS

Solutions to Barriers Four lane road - at grade crossing Precedent of amphibian tunnel Two lane road with small animal tunnel GREEN VEINS

Solutions to Barriers Precedent of large animal tunnel Four lane or greater road with large mammal tunnel GREEN VEINS

Solutions to Barriers Precedent of large animal overpass Wildlife overpass over large highways GREEN VEINS

Industrial Site Residential Site Agricultural Site GREEN VEINS

Agricultural Site Shell Trail Existing GREEN VEINS

Proposed Trail A’ A Railway New access point GREEN VEINS

Corridor Adjacencies Richmond Nature Park Designated Bike Route Major Transit Lines Agricultural E Elementary School Land Secondary School S S E Nodes adjacent to the corridor Nodes along the corridor E E Length of line connecting each node represents relative distance between nodes. Fraser River Estuary GREEN VEINS

Sections Section A-A’ Existing Grassland set aside Existing Trail and Vegetation Section A-A’ Lower Cost Proposal Perch trees for raptors Trail enhancements and increased plant diversity Grassland set aside Section A-A’ Higher Cost Proposal GREEN VEINS

Existing Trail GREEN VEINS

Proposed Trail Enhancements GREEN VEINS

Residential Deer Lake Park Oakland Avenue Empress Avenue Stanley Street Brantford Park Existing Site GREEN VEINS

Proposed Site Deer Lake Park Street rights of way used for habitat enhancement and pedestrian improvements A A’ Backyard habitat enhancements provide stop over point for native wildlife Streets are narrower, curbless, have tree canopy, and swales to allow for easier B B’ wildlife crossings Creating a multi-storied canopy in the park adds plant diversity and creates Brantford more habitat for wildlife Park GREEN VEINS

Single House Lot C’ C Single Lot Section C-C’ GREEN VEINS

Sections Wide streets without trees or sidewalks Section A-A’ Existing Reduced lanes, permeable parking Backyards planted with native strip, street trees, swales, and shrubs and trees can support planted public land allow for a variety of other species movement through the corridor to adjacent habitat patches Section A-A’ Proposed GREEN VEINS

Sections Park is composed of mown lawn and a few large trees Section B-B’ Existing Unmown grassy areas reduce Habitat enhancement in the park maintenance costs and provide habitat creates a multi-storied canopy Section B-B’ Proposed GREEN VEINS

Existing Condition GREEN VEINS

Proposed Condition GREEN VEINS

Industrial Runnel Drive Barnet Highway Dewdney Trunk Road Existing GREEN VEINS

Proposed Bosque of crab apple trees provide seasonal interest, habitat value and a formal park setting Detention pond collects water from surrounding parking lots Re-organization of industrial lot allows for a narrow corridor Corridor trail could connect from Colony Farm to Westwood Plateau GREEN VEINS

Sections Under utilized industrial lot Section A-A’ Existing Part of the lot is transformed into a hedgerow and shrub area. This land could be donated by the owner in exchange for a tax break Section A-A’ Proposed GREEN VEINS

Under utilized parking lot Section B-B’ Existing Stormwater detention pond collects water from surrounding parking lots. This artificial wetland creates habitat for birds and insects. Section B-B’ Proposed GREEN VEINS

Existing Conditions GREEN VEINS

Proposed Conditions GREEN VEINS

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