ENVS 1126 Lecture Notes - Lecture 11: Water Cycle, Comprehensive Everglades Restoration Plan, Atlantic Forest
20 Nov 2016
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Commercially killed primate meat is found in new york, london, paris, etc. Optimal populations: carrying capacity of an ecosystem: the maximum population of a given species that an ecosystem can support without being degraded or destroyed in the long run, a population below carrying capacity grows. In a population approaching carrying capacity, competition between individuals reduces recruitment. In a population near or at carrying capacity, thinning reduces competition and obtains optimal growth. The precautionary principle: msy is used to set a fixed quota. In fisheries, it"s the total allowable catch (tac) Inaccurate data overestimate tac: fishers and politicians pressure to keep harvests high, with uncertainties, overuse, and resource depletion, managers turn to the precautionary. Principle: where there is uncertainty, managers must favor resource protection ( err on the side of caution : exploitation limits are set below msy, conflicts arise between users and managers.
