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Publication Information

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Title: Decomposition and N cycling changes in redwood forests caused by sudden oak death

Author: Cobb, Richard C.; Rizzo, David M.;

Date: 2012

Source: In: Standiford, Richard B.; Weller, Theodore J.; Piirto, Douglas D.; Stuart, John D., tech. coords. Proceedings of coast redwood forests in a changing California: A symposium for scientists and managers. Gen. Tech. Rep. PSW-GTR-238. Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture. pp. 357-362

Publication Series: General Technical Report (GTR)

   Note: This article is part of a larger document. View the larger document

Description: Phytophthora ramorum is an emergent pathogen in redwood forests which causes the disease sudden oak death. Although the disease does not kill coast redwood (Sequoia sempervirens), extensive and rapid mortality of tanoak (Notholithocarpus densiflorus) has removed this important tree in much of the central and southern distribution of the redwood forest type. Understanding how the pathogen has altered redwood ecosystem processes is essential to assessing the costs and benefits of disease management. However, almost no published studies have reported baseline rates of ecosystem processes for redwood forests. How substantial are P. ramorum impacts on redwood ecosystem processes? What mechanisms are responsible for ecosystem change in these forests? We conducted a series of field studies quantifying soil N cycling, litterfall, and litter decomposition to begin addressing these questions. The objective of this paper is to report baseline rates of nutrient cycling for redwood forests and summarize the overall affects of sudden oak death on these processes.

Keywords: decomposition, litterfall, nitrogen mineralization, Phytophthora ramorum, redwood, selective species removal, sudden oak death

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  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

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Cobb, Richard C.; Rizzo, David M. 2012. Decomposition and N cycling changes in redwood forests caused by sudden oak death. In: Standiford, Richard B.; Weller, Theodore J.; Piirto, Douglas D.; Stuart, John D., tech. coords. Proceedings of coast redwood forests in a changing California: A symposium for scientists and managers. Gen. Tech. Rep. PSW-GTR-238. Albany, CA: USDA-Forest Service, Pacific Southwest Research Station. pp. 357-362.

 


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