Environmental Science 1021F/G Lecture Notes - Lecture 20: Sustainable Forest Management, Habitat Fragmentation, Sustainable Agriculture

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Tropical forests = 6% of global land, used to be 12% Decreasing the most compared to boreal and temperate. Largest tropical rainforest in brazil, 40% of brazil. Note, secondary causes have a process to them. Problem, when you pull out trees lianas (vines) removed too. Once land is degraded, sold to settlers for subsistence farming. Correlation between high biodiversity and resistance to invasive species. Usa can forgive portion of debt if brazil protects x amount of forest. If debt forgiven, less incentive to deforest for income. People can choose to purchase products that are sustainable. Most countries are developing, limited $ and resources so hard to control. Reduction of carbon sinks and release of co2. New forest takes 200yrs to reach same capacity of previous forest. Deforestation in amazon affect food chains in atlantic ocean. B/c deforestation = decreased percip. and higher temperature. Less h2o ow into atlantic, less nutrients into atlantic.

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