BIOA02H3 Lecture Notes - Lecture 8: Global Warming, Nutrient Pollution, Climax Community
6 Apr 2018
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Unit 3: community ecology, part 3: biodiversity hotspots area w/ high biodiversity that is threatened by. 23 habitat loss (usually due to human actions: coral reefs are marine hotspots, reefs provide many functions, natural barrier that protects shorelines from storm surges & erosion due to regular wave action. Only cover 1% of earth"s surface, but home to 25% marine species: yield compounds that have been used to treat cancer, hiv, cvd, coral reefs in serious danger, overfishing, nutrient pollution, global warming. Sedimentation radiation: keystone species species that impact other members of community in ways disproportionate to its abundance/biomass i. e. beaver build dams that create pond/lake habitats. Dams on rivers make water back up, forming ponds & lakes. W/ out beavers, many ontario lakes wouldn"t exist. Some species persist as either adults or in seed-bank. Species respond individually to climate change of to climate change.
