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12 Cards in this Set
- Front
- Back
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Community |
All the interacting populations of an ecosystem |
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Competitive Exclusion |
No two species will occupy the same niche and compete for exactly the same resources for an extended period of time One will either migrate, become extinct, or partition the resource and utilize a sub-set of the same resource |
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Resource Partitioning |
The concept of resource partitioning, as originally developed, rates to evolutionary change in species in response to selection pressures generated by interspecific competition. |
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Ecological Niche |
Habitat- Place or set of environmental conditions where a particular organism lives. Function- Description of the role a species plays in a biological community, or the total set of environmental factors that determines species distribution |
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Interspecific competition |
Competition between members of different species |
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Intraspecific competition |
Competition among members of the same species. Often intense due to same space and nutritional requirements. |
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Competition intensity |
Depends on how similar the requirements of the species are. How much the ecological niches overlap. |
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Keystone Species |
A species or group of species who impact on its community ecosystem is much larger and more influential than would be expected from mere abundance. Often, many species are intricately interconnected so that it is difficult to tell which is the essential component. |
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Pioneer Species |
1st colonize previously disrupted or damaged ecosystems, beginning a chain of ecological succession that ultimately leads to a more biodiverse steady-state ecosystem. |
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Primary succession |
A community begins to develop on a site previously unoccupied by living organisms. -Pioneer species |
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Secondary succession |
An existing community is disrupted and a new one subsequently develops at the site. |
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Climax community |
Community that develops and seemingly resists further change. |
