BIOLOGY 1P03 Lecture Notes - Lecture 15: Ecosystem Services, Invasive Species, Overexploitation
28 Nov 2016
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Document Summary
Attempts to value ecosystem services and assess monetary trade-offs that occur when natural ecosystems are damaged for human profit-making activities. Why is it important: ecosystem services sustain life, if they are not appropriately valued, they are often damaged or destroyed by human activities. Extinction = a natural process, but rates have risen dramatically: increasing numbers of species are being threatened to extinction, species become extinct due to a changing environment can no longer sustain a species needs. We are going through a mega sixth level extinction. Major threats to biodiversity: habitat deconstruction, habitat fragmentation, overexploitation, invasive species spcies introduced in a new area can have an effect on the current species living in the environment (either positively or negatively, pollution, global warming. Biocapacity earth has a limited capacity and it is constant. Core reserves preserve all levels of biodiversity. Corridors connect critical animal habitats and design biosphere reserves. Core reserve = protect; may allow animal monitoring and low impact development.
