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    Conservation of the Stephens' Kangaroo Rat {Dipodomys stephensi): Planning for Persistence

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    Subject
    Stephens' Kangaroo Rat; Dipodomys stephensi
    Author
    Burke, Russell L.; Tasse, Judy; Badgley, Catherine; Jones, Suzanne R.; Fishbem, Nancy; Phillips, Sarah; Soule, Michael E.
    Journal Title
    Scas: Bulletin of the Southern California Academy of Sciences
    Volume
    90
    Issue
    scas/vol90/iss1; 1
    Metadata
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    URI
    https://scholar.oxy.edu/handle/20.500.12711/11489
    Abstract
    ThQ Stephens' kangaroo rat {Dipodomys stephensi. Family Hetero- <br /><br />myidae) is an endangered desert rodent of southern California. The historic range <br /><br />of Z). stephensi has been severely reduced by urban and agricultural development, <br /><br />and remaining habitat is considerably fragmented. We estimated the minimum <br /><br />viable population size ofD. stephensi from a demographic model that incorporated <br /><br />information about survivorship and fecundity in relation to stochastic variation <br /><br />in rainfall. According to the model, a population of 13,210 individuals has a 95% <br /><br />probability of persisting for 100 years. At a density of 10 individuals/ha, this <br /><br />value corresponds to a reserve size of 1321 ha. Based on this estimate and maps <br /><br />of current distribution, land use, and soil type, we suggested nine potential reserve <br /><br />sites and recommended that at least three reserves be estabhshed to secure per- <br /><br />sistence.
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