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Community and Pop.
| Term | Definition |
|---|---|
| The ability of a living system such as a population to keeps its numbers within the limits imposed by available resources. | Constancy |
| The ability of a living system to repair damage after an external disturbance that is not too drastic. | Resilience |
| Those species that normally live and thrive in a particular community. | Native species |
| The ability of a living system to resist being disturbed or altered. | Persistence |
| The role and position a species has in its environment. How it meets its needs for food and shelter, how it survives, and how it reproduces | Niche |
| The relative abundance of individuals within each of those species. | Species evenness |
| The number of different species an ecosystem contains. | Species diversity |
| Other species that migrate into community, or are deliberately or accidentally introduced. | Nonnative species |
| Species that provide early warnings of harmful environmental changes taking place in a community or an ecosystem | Indicator species |
| The loss of a __________ ____________ can lead to population crashes and extinctions of other species in a community that depends on it for certain ecological services | Keystone species |
| These play a major role in shaping communities by creating and enhancing their habitats in ways that benefit other species. | Foundation species |
| The most common interaction between species is competition for shared or limited resources such as space and food. | Interspecific competition |
| A member of one species (the predator) feeds directly on all or part of a living organism of another species (the prey) as part of food webs | Predation |
| When one species feeds on the body of, or the energy used by, another organism, usually by living on or in the host. The parasite benefits and the host is harmed but not killed immediately | Parasitism |
| Two species behave in a way that benefits both by providing each with food, shelter, or some other resources | Mutualism |
| An interaction that benefits one species but has little, if any, effect on the other. | Commensalism |
| The gradual change in species composition of a given area. | Ecological succession |
| Gradual establishment of communities in lifeless areas where there is no soil in terrestrial community or no bottom sediment in an aquatic community. | Primary succession |
| This development begins in an area where the natural community of organisms has been disturbed, removed, or destroyed, but some soil or bottom sediment remains. | Secondary succession |
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amamgeat
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