Rapid Population Growth of a Critically Endangered Carnivore | Zendy

Martin B. Grenier | Zendy; David B. McDonald | Zendy; Steven W. Buskirk | Zendy

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Rapid Population Growth of a Critically Endangered Carnivore

Author(s) -

Martin B. Grenier,

David B. McDonald,

Steven W. Buskirk

Publication year - 2007

Publication title -

science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 12.556

H-Index - 1186

eISSN - 1095-9203

pISSN - 0036-8075

DOI - 10.1126/science.1144648

Subject(s) - carnivore , endangered species , critically endangered , population , population growth , reproduction , biology , ecology , geography , zoology , demography , predation , habitat , sociology

Reintroductions of endangered species are controversial because of high costs and frequent failures. However, the population of black-footed ferrets descended from animals released in Shirley Basin, Wyoming, from 1991 to 1994 has grown rapidly after a decline to a low of five animals in 1997. Beginning around 2000, the population grew rapidly to an estimated 223 (95% confidence interval is 192 to 401) individuals in 2006. Matrix population modeling shows the importance of survival and reproduction during the first year of life, reflecting an uncommon life history for an endangered mammalian carnivore. Recovery of the species may benefit from more opportunistic and widespread releases.

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