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Proactive intervention to sustain high-elevation pine ecosystems threatened by white pine blister rust


Schoettle, Anna W.; Sniezko, Richard A. 2007. Proactive intervention to sustain high-elevation pine ecosystems threatened by white pine blister rust. Journal of Forest Research. 12: 327-336.

Only recently have efforts begun to address how management might prepare currently healthy forests to affect the outcome of invasion by established non-native pests. Cronartium ribicola, the fungus that causes the disease white pine blister rust (WPBR), is among the introductions into North America where containment and eradication have failed; the disease continues to spread. Ecosystem function is impaired by high rust-caused mortality in mature five-needle white pine forests. This paper evaluates five proactive management options to mitigate the development of impacts caused by white pine blister rust in threatened remote high-elevation five-needle pine ecosystems of western North America. They are: reducing pest populations; managing forest composition; improving host vigor; introducing resistant stock with artificial regeneration; and diversifying age class structure to affect the natural selection process for resistance. Proactive intervention to manage and facilitate evolutionary change in the host species may sustain host populations and ecosystem function during pathogen naturalization.

Keywords: evolution of resistance, exotic pathogen, Pinus aristata, Pinus albicaulis, Pinus flexilis


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http://www.fs.fed.us/rm/pubs_other/rmrs_2007_schoettle_a002.pdf

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Title: RMRS Other Publications: Proactive intervention to sustain high-elevation pine ecosystems threatened by white pine blister rust
Electronic Publish Date: March 14, 2008
Last Update:
March 14, 2008

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