4-17 - 4/17/09 Food Web Predator Prey Interactions -lynx...

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4/17/09 Food Web Predator Prey Interactions -lynx -snowshoe hare -as population of snowshoe hare increases, lynx increases as well (predator) Hare populations are limited by predation and food availability -control<predators excluded< food added< predator excluded, food added Carrying capacity = K Species gets introduced to a new environment -J curve=exponential curve When the growth becomes stable -S curve=stationary phase Three things effect overall growth of individuals 1) births 2) Deaths 3) Migration Human Population growth 1) agricultural invented 2) now on exponential growth 3) limit that planet can support, at certain number it will reach stationary phase -Availability of resources Water, space, carbon, nitrogen, phosphorus, oxygen, -Availability of resources and removal of waste limits carrying capacity Fewer consumers than producers --Primary producers>primary consumers>secondary consumers>tertiary consumers Energy is lost in each consumer -consumers don’t receive all the energy that producers produce.
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4-17 - 4/17/09 Food Web Predator Prey Interactions -lynx...

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