ES101 Study Guide - Final Guide: Intermediate Disturbance Hypothesis, Ecological Niche, Keystone Species
9 Sep 2018
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Document Summary
There are many variables that are used to describe biological communities. Carnivors feeding on mobile prey have 4 main options: physical appearance - size, stratification and distribution of populations and species. Species diversity richness (count, # of) or: richness: the number of different species evenness. represented in an ecological community, niche structure, there are 4 ecological niches (tropical rainforest, coral reefs, the deep sea and large tropical lakes) Small island has fewer different species, small island has lower immigration due to smaller target for potential colonizers, small island has higher extinction due to less resources. Island closer to the mainland would have higher immigration and higher species richness. To live one species must: migrate to another area. Shift its feeding habits or behavior through natural selection and evolution. Suffer a sharp population decline or become extinct in that area: resource partitioning. Management of species: native species, non-native species.
