Ecological Community Concepts

Paper Summary:

This paper defines and describes the different sorts of ecological communities found in nature. Each section of the paper defines and explores specific ecological concepts. The Caspian Sea region is selected as a biologically diverse and thriving ecological community.

Food Webs
Succession
Climax Community
Biodiversity
The Nature of a Community

From the Paper:

"Furthermore, characterization of communities can occur based on the number of species and feeding links per species. As community diversity increases, the number of trophic levels, such as the herbivore or omnivore levels, and the number of guilds, such as the leaf eaters of the herbivore trophic level, also increase. These trophic levels, then, help influence the food web by describing either a top down or bottom up energy chain. In top down chains, predators depress populations of other animals, such as herbivores, resulting in a "green" earth. In bottom up chains, plants resist consumption by toxins and digestion inhibition, resulting also in a "green" earth. In both cases, predation and production form intricate parts of the food web (Ricklefs, 2001)."

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