Wildlife Species and Population Impacts
Author: I. Manley, J. Krebs
Literature summary and assessment of dam impacts on Wildlife Wildlife species impact ratings (WSIR) were developed to assess the relative risk of dam related habitat losses to each individual wildlife species. The WSIR approach involved the following steps; constructing species lists for each impacted dam unit, linking species to mapped pre-dam habitats using species habitat associations from the Columbia basin database (Steeger et al 2001), compiling habitat losses for 17 terrestrial (MacKillop et al 2008) and aquatic (Thorley 2008) habitat types that correspond with species-habitat associations and estimating impact to each species by averaging habitat loss ratings across all habitats associated with each species.
For all wildlife species combined the greatest wildlife impacts were observed in the Kinbasket Dam unit (c3) (Figure 8). In the Kinbasket dam unit a large proportion of species had high WSIR and few species had very low to medium WSIR. Remaining dam units in descending order of overall wildlife species impact were the Duncan, Arrow, Revelstoke and Koocanusa. These dam units were close in terms of overall species impacts with the Duncan dam unit the only area with very high WSIR species and the Revelstoke the only dam unit in this group lacking any high or very high WSIR species. The Whatshan and Seven mile dam units had the lowest impacts with species impact ratings ranging from very low to medium.
A total of 11 Priority 1 and 2 migratory bird species were identified using basin-wide HLRR. Nine species were identified as impacted by dam-footprint-caused habitat fragmentation. Two wide-ranging large mammals, 3 carnivores, 2 amphibians, 1 reptile and 1 owl species are included.
For all wildlife species combined the greatest wildlife impacts were observed in the Kinbasket Dam unit (c3) (Figure 8). In the Kinbasket dam unit a large proportion of species had high WSIR and few species had very low to medium WSIR. Remaining dam units in descending order of overall wildlife species impact were the Duncan, Arrow, Revelstoke and Koocanusa. These dam units were close in terms of overall species impacts with the Duncan dam unit the only area with very high WSIR species and the Revelstoke the only dam unit in this group lacking any high or very high WSIR species. The Whatshan and Seven mile dam units had the lowest impacts with species impact ratings ranging from very low to medium.
A total of 11 Priority 1 and 2 migratory bird species were identified using basin-wide HLRR. Nine species were identified as impacted by dam-footprint-caused habitat fragmentation. Two wide-ranging large mammals, 3 carnivores, 2 amphibians, 1 reptile and 1 owl species are included.
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Additional Info
Study Years: 2011
Published: 2011
Topics
Tags: Abundance, Arrow Lakes Reservoir, Biodiversity, Compensation, Connectivity, Dam Impacts, Duncan Reservoir, Ecological Function, Featured, Footprint, FWCP, Genetic Diversity, Habitat Loss, Habitat Restoration, Historic, Inundation, Inventory, Kinbasket Reservoir, Koocanusa Reservoir, Kootenay Canal, Life History, Lower Columbia River, Migration, Monitoring Recommendations, Pend DOreille, Population Structure, Predator, Prey, Recruitment, Reintroduction, Research Recommendations, Restoration Recommendations, Revelstoke Reservoir, Riparian Restoration, Spillimacheen, Terrestrial, Translocation, Wildlife, Wildlife HabitatWildlife Species and Population Impacts
Author: I. Manley, J. Krebs
Tags: Abundance, Arrow Lakes Reservoir, Biodiversity, Compensation, Connectivity, Dam Impacts, Duncan Reservoir, Ecological Function, Featured, Footprint, FWCP, Genetic Diversity, Habitat Loss, Habitat Restoration, Historic, Inundation, Inventory, Kinbasket Reservoir, Koocanusa Reservoir, Kootenay Canal, Life History, Lower Columbia River, Migration, Monitoring Recommendations, Pend DOreille, Population Structure, Predator, Prey, Recruitment, Reintroduction, Research Recommendations, Restoration Recommendations, Revelstoke Reservoir, Riparian Restoration, Spillimacheen, Terrestrial, Translocation, Wildlife, Wildlife Habitat
Literature summary and assessment of dam impacts on Wildlife
Wildlife species impact ratings (WSIR) were developed to assess the relative risk of dam related habitat losses to each individual wildlife species. The WSIR approach involved the following steps; constructing species lists for each impacted dam unit, linking species to mapped pre-dam habitats using species habitat associations from the Columbia basin database (Steeger et al 2001), compiling habitat losses for 17 terrestrial (MacKillop et al 2008) and aquatic (Thorley 2008) habitat types that correspond with species-habitat associations and estimating impact to each species by averaging habitat loss ratings across all habitats associated with each species.
Summary
For all wildlife species combined the greatest wildlife impacts were observed in the Kinbasket Dam unit (c3) (Figure 8). In the Kinbasket dam unit a large proportion of species had high WSIR and few species had very low to medium WSIR. Remaining dam units in descending order of overall wildlife species impact were the Duncan, Arrow, Revelstoke and Koocanusa. These dam units were close in terms of overall species impacts with the Duncan dam unit the only area with very high WSIR species and the Revelstoke the only dam unit in this group lacking any high or very high WSIR species. The Whatshan and Seven mile dam units had the lowest impacts with species impact ratings ranging from very low to medium.
A total of 11 Priority 1 and 2 migratory bird species were identified using basin-wide HLRR. Nine species were identified as impacted by dam-footprint-caused habitat fragmentation. Two wide-ranging large mammals, 3 carnivores, 2 amphibians, 1 reptile and 1 owl species are included.