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Term
| Generally three factors play a role in defining rarity |
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Definition
geographic range,
habitat specificity
local population size |
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Rabinowitz (1981) has used three factors to help define rarity :
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Geographic range (1&2 large, or 3&4 small)
Habitat specificity (1&3 wide, or 2&4 narrow)
Local population size (A: large & dominant somewhere, or B: small & non-dominant)
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| Seven of the eight combinations could be classified as rare. The exception would be |
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| Most endangered species would fall into |
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| the A4 or B4 categories!!! |
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| At the National (federal) level, endangered and threatened species have been defined legally by the |
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| Endangered Species Act of 1973 |
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| A species that is in imminent danger of extinction throughout all or a significant portion of its range |
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| A species that is likely to become endangered in the foreseeable future |
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Stated purpose of Endangered Species Act
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to protect species and also "the ecosystems upon which they depend."
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There are ~_ federally listed plant species (i.e. threatened or endangered) that occur in Georgia
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There are ~___ plant species listed by Georgia as “species of concern”
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| Arkansas oak, georgia oak, oglethorpe oak |
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