MDT2_sample2 - Biology 116 Conservation Biology Exam Two...

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Biology 116: Conservation Biology Name_________________________ Exam Two •  Winter 1998 (warning: keep you answers short- one or two sentences will often suffice! Don’t   go beyond the space provided) 1. a. Population viability analysis focuses on what three attributes of a species  and its environment.   (6 POINTS).   b. Discuss how  these attributes were assessed  in the Santa Ana puma and one  important conclusion  of the study. (6 POINTS) c. What are "Allee effects" and how  might you be able to incorporate them into  a simple demographic model? (6 POINTS) d. What are source and sink populations. Describe a simple metapopulation  model that accounts for the effect of migration.  (6 POINTS)
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d. Describe three sources of stochasticity (uncertainty or randomness  that  need to be included in PVA model. (6 POINTS) 2. Do PVA considerations lead to a more precise definition of endangered  species. Describe operationally how  you might use these concepts to define an 
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