BIOL208 Lecture Notes - Lecture 17: Diminishing Returns, Snowshoe Hare, Functional Response
20 Sep 2016
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Document Summary
Population that grows to a limit, maintains that population near that limit. Does fluctuate a little bit, small amount of variance in pop size. Excess of resources) causes the population to explode. Period and predictable booms and busts in populations. Between winter and spring they can eat the majority of the plants. Eating plants causes plants to defend themselves, the more the plant is eaten the less nutritious it becomes. Contributing to the change in dynamics of this species. Type 2 functional response: increasing amount of hares they"re eating at a decreasing rate (lynx) When hares are at high density they can eat as many as they possibly can. All of the treatments = more bunnies. Therefore, hares are limited by both food availability and predation. N and r both matter for calculating population growth. Harvesting above optimal sustainable yield will effect long term growth, diminishing populations. Hard to calculate the size of a deep sea organism.
