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https://hdl.handle.net/2440/36990
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dc.contributor.author | Webb, B. | - |
dc.contributor.author | Brook, B. | - |
dc.contributor.author | Shine, R. | - |
dc.date.issued | 2002 | - |
dc.identifier.citation | Ecological Research, 2002; 17(1):59-68 | - |
dc.identifier.issn | 0912-3814 | - |
dc.identifier.issn | 1440-1703 | - |
dc.identifier.uri | http://hdl.handle.net/2440/36990 | - |
dc.description | The definitive version is available at www.blackwell-synergy.com | - |
dc.description.abstract | Although it is well known that species vary in their vulnerability to extinction, the reasons are poorly understood. Theory predicts that long-lived species with 'slow' life histories (small litters, slow growth, late maturation) should be at greater risk than short-lived species with high potential rates of increase. This hypothesis was tested by comparing life-history traits of two species of sympatric, elapid snakes: the endangered broad-headed snake, Hoplocephalus bungaroides, and common small-eyed snake, Cryptophis nigrescens. From 1992 to 2000 a mark–recapture study of both species was undertaken in Morton National Park, south-eastern Australia, and this information was used to construct transition matrices for each species. The endangered H. bungaroides was found to mature late (6 years of age), had a high juvenile (54.7%) and adult (81.6%) survival rate, and a long generation length (10.4 years). In striking contrast, the common C. nigrescens matured early (within 3 years), had a lower juvenile (30.4%) and adult (74.4%) survival rate (but higher recruitment rate), and a substantially shorter generation length (5.9 years). Elasticity analyses revealed that H. bungaroides was considerably more sensitive to survival past the age of 2 years (68.6%) than C. nigrescens (37.4%). These results provide support for the hypothesis that species with slow life histories are more vulnerable to extinction. | - |
dc.description.statementofresponsibility | Jonathan K Webb, Barry W Brook and Richard Shine | - |
dc.language.iso | en | - |
dc.publisher | Blackwell Science Asia | - |
dc.source.uri | http://dx.doi.org/10.1046/j.1440-1703.2002.00463.x | - |
dc.title | What makes a species vulnerable to extinction? Comparative life-history traits of two sympatric snakes | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1046/j.1440-1703.2002.00463.x | - |
pubs.publication-status | Published | - |
Appears in Collections: | Aurora harvest 6 Earth and Environmental Sciences publications Environment Institute Leaders publications |
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