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12 Cards in this Set
- Front
- Back
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patches |
discrete spatial units of various shapes and sizes within a alrger landscape of unsuitble habitat |
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core population |
a metapopulation may consist of a larger core population that acts as a main source of emmegrants |
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satellite population |
a small local population maintained by emegration from a larger core population |
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patch occupancy |
the proportion of habitat atches occupied at any time |
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extinction rate |
rate at which a localpopulation is extirpated in a metapopulation, compare colonization rate |
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colonization rate |
a rate at which individuals establish in empty paches depends on, the propertion of empty patches avaible and the propertion of occipued patches that are providing colonists, multiplied by the probability of colonization |
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heterogeneity |
variation in the physical enviornment, contirbutes to communtiy diversity |
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rescue effect |
the decreased extintiction risk that occurs with an increased immigration rate- explains discrepancy |
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mainland- island metapopulation structure |
differs form other metapopulation in that a single habitat patch is the major source of emigrants to other patches in the metwork |
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source population |
are defined by thier ability to maintain positive growth |
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sink populations |
depend on source populations to rescue them from extinction |
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synchronication |
in metapopulations, tendancy for local populations to rise and fall in step of other populations |
