BIO 356 Lecture 10: Population Viability Analysis
11 Apr 2018
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Document Summary
The process of identifying the threats faced by a species and evaluating the likelihood (ie probability) that the species will persist for a given time into the future. Steps 1 to 4: build a model. Steps 3 to 6: make the model better. Steps 7 to 8: use the model to decide things. Steps 2 to 9: make the model even better. Steps 7 to 8: continue making decisions. Habitat restoration effective eventually (especially a corridor between existing habitat), but. Reducing road mortality & translocating individuals from mexico effective in the short term. Over 99% of all species that ever existed have gone extinct. Lifetime of a species 1 to 12 million. Five mass extinctions are seen in the fossil record. Assume on average species lifespan is 4 million years. Average probability of extinction 1/4,000,000 per year. 10,000,000 x 1/4,000,000 = 2. 5extinctions per year. Iucn red list (iucnredlist. org) -- provides a way to compare different species and is worldwide.
