BIOL 3061- Final Exam Guide - Comprehensive Notes for the exam ( 53 pages long!)
29 Mar 2018
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Islands will have an equilibrium # of sp. determined by immigration. Important factors are size of island (affecting local extinction) & distance from mainland (affecting immigration) Increase distance to mainland = colonization goes down: new equilibrium, reduced # of sp an lower turnover. 46: combinations of sp. differ in their contribution to an ecosystem, 3 sp. Invaders that survived decreased as sp. richness increased: this does support elton"s theory, zooplankton, these were v diverse and were able to combat the invaders, overall resistance to invasion does increase with sp. richness (elton) Invasion paradox: opposite to elton"s theory, removing biodvie. In the absence of predation, growth rate is exponential: predator perspective. Increase death rate of prey, the death rate will decrease over time: rosenzweig-macarthur, stable, type 2 fr so prey isocline is curved, remember. Intersection between pred/prey isocline is right at the hump: unstable.
