Geography 2320A/B Midterm: Chapter 4 Review
20 Oct 2016
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Document Summary
Describe some of the key properties of communities and ecosystems including diversity, composition, physical structure, species interaction, and energy flow. Explain the process of succession for both primary and secondary succession. Describe some of the most important biogeographic patterns. Predator to prey ratio is higher in a less lush environment. Caribou migration out of timing with plant growth. Population: a group of inter-breeding individuals of a particular species. Metapopulation: a set of local (sub) populations of a species that are linked by dispersal amoung those populations (eg source-sink) Mainland-island population structure: one large population (low extinction risk) provides colonists for many small populations. Community: assemblage of interacting organisms that share the same habitat. Ecosystem: a set of abiotic and biotic components interacting in a given environment. Biome: a defined area if similar climate and vegetation type; it may contain different taxa in different regions -highlights the role of the physical environment in determining characteristics of species assemblages.
