Geography 2320A/B Lecture Notes - Lecture 10: Banff National Park, Habitat Fragmentation, Anthropocentrism
11 Dec 2019
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What"s biodiversity? n variation among species or other biological n. Linnaean shortfall (1. 7m species described, don"t exact#) n wallacean ~ (paucity of info on geographic of nature, niche) Biodiversity loss n habitat fragmentation; pollution; invasive species; harvesting n climate change: extreme weather++; longer growing season; disrupted animal migration; arctic lakes . Range collapse: subpopulation at the edge, more genetic variation, variability n. Hotspot: high overall biodiversity (1500+ endemic); significant impacts from human activities n 44% plant + 35% vertebrates, 1. 4% earth surface n lost 88% of regional vegetation on aver n. Corridors banff national park elk bridge. Different conservation strategies n captive rearing (northern white rhino); hunting (kill moose); protected areas (hotspots) u what size of park do u need: large carnivore larger park. Six goals of ecological restoration n species composition & abundance n structure vertical (arrangement of vegetation & substrate); horizontal (pattern) n heterogeneity (variation in species composition, ecosystem structure) n.
