Age, Sex, Density, Winter Weather, and Population Crashes in Soay Sheep

Coulson, Tim and Catchpole, Edward A. and Albon, Steve D. and Morgan, Byron J. T. and Pemberton, J.M. and Clutton-Brock, Tim H. and Crawley, M.J. and Grenfell, B.T. (2001) Age, Sex, Density, Winter Weather, and Population Crashes in Soay Sheep. Science, 292 (5521). pp. 1528-1531. ISSN 0036-8075. (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Quantifying the impact of density, extrinsic climatic fluctuations, and demography on population fluctuations is a persistent challenge in ecology. We analyzed the effect of these processes on the irregular pattern of population crashes of Soay sheep on the St. Kilda archipelago, United Kingdom. Because the age and sex structure of the population fluctuates independently of population size, and because animals of different age and sex respond in different ways to density and weather, identical weather conditions can result in different dynamics in populations of equal size. In addition, the strength of density-dependent processes is a function of the distribution of weather events. Incorporating demographic heterogeneities into population models can influence dynamics and their response to climate change.

Item Type: Article
Subjects: Q Science > QA Mathematics (inc Computing science)
Divisions: Faculties > Science Technology and Medical Studies > School of Mathematics Statistics and Actuarial Science > Statistics
Depositing User: Judith Broom
Date Deposited: 06 Nov 2008 19:30
Last Modified: 13 Jun 2014 10:20
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