![](/olcweb/styles/shared/spacer.gif) | ![](/sites/dl/free/007029416x/title/MOLLES2E02SP_sm.jpg) Ecology, Concepts and Applications, 2/e Manuel C. Molles,
University of New Mexico - Albuquerque
Geographic Ecology
Chapter Objectives
On islands and habitat fragments on continents, species richness increases with area and decreases with isolation. |
![](/olcweb/styles/shared/spacer.gif) | ![](/olcweb/styles/shared/spacer.gif) | ![](/olcweb/styles/shared/spacer.gif) | Species richness on islands can be modeled as a dynamic balance between immigration and extinction of species. |
![](/olcweb/styles/shared/spacer.gif) | ![](/olcweb/styles/shared/spacer.gif) | ![](/olcweb/styles/shared/spacer.gif) | Species richness generally increases from middle and high latitudes to the equator. |
![](/olcweb/styles/shared/spacer.gif) | ![](/olcweb/styles/shared/spacer.gif) | ![](/olcweb/styles/shared/spacer.gif) | Long-term historical and regional processes significantly influence the structure of biotas and ecosystems. |
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