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Shifting Climate, Altered Niche, and a Dynamic Conservation Strategy for Yellow-Cedar in the North Pacific Coastal Rainforest
Paul E. Hennon, David V. D'Amore, Paul G. Schaberg, Dustin T. Wittwer and Colin S. Shanley
Vol. 62, No. 2 (February 2012), pp. 147-158
Stable URL: http://www.jstor.org/stable/10.1525/bio.2012.62.2.8
Page Count: 12
You can always find the topics here!Topics: Trees, Species, Climate models, Forest conservation, Forest soils, Climate change, Habitat conservation, Mortality, Snow, Forest management
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The extensive mortality of yellow-cedar along more than 1000 kilometers of the northern Pacific coast of North America serves as a leading example of climate effects on a forest tree species. In this article, we document our approaches to resolving the causes of tree death, which we explain as a cascade of interacting topographic, forest-structure, and microclimate factors that act on a unique vulnerability of yellow-cedar to fine-root freezing. The complex causes of tree mortality are reduced to two risk factors—snow depth and soil drainage—which are then used to model present and future cedar habitat suitability. We propose a dynamic, comprehensive conservation strategy for this valuable species on the basis of zones created by shifting climate, cedar's ecological niche, and observed risk factors. Research on yellow-cedar decline is offered as a template for understanding and adapting to climate change for other climate–forest issues.
© 2012 by American Institute of Biological Sciences. All rights reserved. Request permission to photocopy or reproduce article content at the University of California Press’s Rights and Permissions Web site at http://www.ucpressjournals.com/reprintinfo.asp.