Term
| How does commensalism affect two different species? |
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Definition
| Commensalism benefits one species and does not help or hurt other species. |
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Term
| How does mutualism affect two different species? |
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Definition
| Mutualism is a relationship in which both species benefit. |
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Term
| What type of relationship is parasitism? |
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Definition
| Parasitism is a relationship in which the prey or host is harmed; often fatally. |
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Term
| In nature, how many interactions occur at the same time? |
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Definition
| In nature more than one interaction usually occurs at the same time. |
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Term
| When do indirect effects occur? |
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Definition
| Indirect effects can occur when one member of two interacting species is affected by a third species. |
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Term
| How can keystone species maintain a more diverse community? |
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Definition
| Keystone species can maintain a more diverse community by reducing competition between species or altering the environment to create new habitats. |
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Term
| When does succession occur? |
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Definition
| Succession occurs as species alter their habitat and resources, to thus facilitating other species. |
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Term
| How does primary succession begin? |
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Definition
| Primary succession begins with a barren, lifeless substrate. |
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Term
| When does secondary succession occur? |
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Definition
| Secondary succession occurs after an existing community is disturbed. |
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Term
| Successional dynamics include… |
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Definition
| Successional dynamics include tolerance, facilitation, and inhibition. |
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Term
| As succession occurs species richness _________ so as to become stable or _______ in time if K-selected species out-compete other species. |
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Definition
| As succession occurs species richness increases so as to become stable or decline in time if K-selected species out-compete other species. |
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Term
| What is the relationship between animal species succession and plant succession? |
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Definition
| Animal species succession changes with plant succession, and, in turn, animal communities may affect plant succession. |
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Term
| Community composition changes as a result of _____ and ______ disturbances that “reset” succession. |
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Definition
| Community composition changes as a result of local an global disturbances that "reset" succession. |
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Term
| How do intermediate levels of disturbance affect species richness? |
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Definition
| Intermediate levels of disturbance may maximize species richness. |
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