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Understanding and Managing Disease in Forest Ecosystems
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![[Photograph]: Expanding pocket of oak wilt, recognized by the gray (dead) and yellowish (dying) trees, caused by a native invasive fungus.](https://webarchive.library.unt.edu/eot2008/20090305014024im_/http://www.ncrs.fs.fed.us/4502/local-resources/images/ow_pocket_lg_oval.jpg "[Photograph]: Expanding pocket of oak wilt, recognized by the gray (dead) and yellowish (dying) trees, caused by a native invasive fungus.")
Circled area shows an expanding pocket of oak wilt in Minnesota.
Photo by J. Juzwik
The issue
Oak (Quercus) trees provide wildlife habitat, wood products, and many landscape benefits. Oaks occur on over 5 million hectares of land in the Midwest. Due to oak wilt, oak decline, and urbanization, the quantity and quality of the oak resource are threatened. We are working to reduce the impacts of these factors on the oak resource in the region.
What are we doing about it?
We
are measuring the effects of
urbanization on oaks
in the St. Paul–Minneapolis, Minnesota, area.
We
are working
to control oak wilt.
We
are working
to reduce the effects of
oak decline.
For additional information on oaks, refer to:
Definitive Reference on Ecology and Silviculture of Oaks
by Paul S. Johnson, Stephen R. Shifley, and Robert Rogers.
USDA Forest Service - North Central Research Station
Last Modified:
January 03, 2005