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- W2890897169 abstract "Abstract Population catastrophes are widespread, unpredictable phenomena occurring in natural populations that have important, yet frequently underappreciated, consequences for persistence. As human impacts on ecosystems increase globally, the frequency of catastrophes is likely to rise as increasingly fragmented and depleted populations become more vulnerable. Species with slow life histories are expected to recover slowly from catastrophes because of their longer generation times, and assessing their population recovery requires data spanning long periods. We report results from a long‐term mark–recapture study of snapping turtles ( Chelydra serpentina ) in Algonquin Provincial Park, Ontario, that experienced a major mortality event from winter predation by river otters. We estimated abundance and survival of nesting females before, during, and 23 yr following the catastrophe. We built multistate mark–recapture models incorporating movement between sites, temporary emigration, and observation effects. We found that during the 3‐yr mortality event, abundance of nesting females declined by 39% overall, and by 49% at our focal nesting area. Apparent survivorship of nesting females during these three years fell from 0.94 before the mortality event to 0.76 at the focal site and 0.86 at adjacent nest sites. Survivorship over the following 23‐yr period averaged 0.972 and 0.940 at the two sampling areas. Despite high post‐catastrophe survivorship and connectivity with other populations, the population failed to recover, displaying consistently reduced abundances across 23 post‐catastrophe years. We discuss the relationship between life‐history attributes and the causes and consequences of local catastrophes and their conservation implications." @default.
- W2890897169 created "2018-09-27" @default.
- W2890897169 creator A5002302411 @default.
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- W2890897169 date "2018-09-01" @default.
- W2890897169 modified "2023-10-15" @default.
- W2890897169 title "Post‐catastrophe patterns of abundance and survival reveal no evidence of population recovery in a long‐lived animal" @default.
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- W2890897169 doi "https://doi.org/10.1002/ecs2.2396" @default.
- W2890897169 hasPublicationYear "2018" @default.
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