BIO120H1 Lecture Notes - Lecture 12: Insular Biogeography, Phylogenetic Diversity, Extinction Event
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BIO120H1 Full Course Notes
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Wilson: early founder of biodiversity science, theory of island biogeography, (cid:862)the loss of biodiversity is the most important process of environmental change. This is because it is the only process that is wholly irreversible. Its consequences are also the least predi(cid:272)ta(cid:271)le, (cid:271)e(cid:272)ause the (cid:448)alue of the earth"s (cid:271)iota is largely unstudied and unappreciated. (cid:863) Today"s glo(cid:271)al e(cid:374)(cid:448)iro(cid:374)(cid:373)e(cid:374)t pro(cid:271)le(cid:373)s: global warming & climate change, loss of biodiversity, environmental pollution, human famine, spread of infectious diseases, human population growth. Migrate to more favourable environmental conditions (ecology) Go locally (or globally) extinct (evolution: alters phenology (timing of biological events) Art weis: field mustard in southern california, wet year: lots of flowering and plants, dry year: less flowering, directional selection for early flowering due to drought. Biodiversity: the variety of life on earth: the number and kinds of living organisms in a given area, two elements: Interspecific variation of species diversity (studied by ecologist)
