ENVB 305 Lecture Notes - Lecture 16: Prey Switching, Pioneer Species, Dynamic Equilibrium
28 Aug 2016
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Document Summary
Effect of predator on population growth of prey. Ability of predators to convert prey captured to. Conversion efficiency population growth numerical responses, naturally stable, handling time, paradox of enrichment carrying capacity. Type i- predator consumes more as prey abundance increases (ever-expanding stomach, used for lotka-volterra model) Type ii- predator consumes a lower proportion of victims as victim abundance increases. Type iii- feeding rate is accelerated at low prey density and decreases at high prey density (may occur with prey switching) allee effects. Lotka-volterra equations up to and including equation 6. 4. Do problem 6. 1 and 6. 3, read over 6. 2, don"t do 6. 4. Equilibrium theory of island biogeography- predicts species richness on islands as a function of immigration to islands by species, and by local extinctions by species. There is constant turnover by species on island and thus this is a dynamic model island isolation and island area target effects and the rescue effect habitat diversity, competitive-based mechanisms.
