为我找到一篇关于气候变化对极地熊栖息地影响的科学论文。
这是一篇关于气候变化对极地熊栖息地影响的科学论文的引用：

Amstrup, S. C., Marcot, B. G. & Douglas, D. C. (2008). A Bayesian network modeling approach to forecasting the 21st century worldwide status of polar bears. In Survival and persistence in the face of environmental change: Insights from modeling species across space and time (eds A. O. Nicholls, R. S. C. Black, J. W. E. Lloyd, M. D. C. Tasker), pp. 225–244. Royal Society of Edinburgh, Edinburgh.