Western Juniper (Juniperus occidentalis) distribution, Bear Creek Buttes, Deschutes County, Oregon: some possible ecological and cultural influences Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_projects/bz60cx09v

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  • Several environmental and cultural factors were studied to explain the distribution of western juniper (Juniperus occidentalis Hook.) in an area one mile northwest of Millican, Oregon. In the study area juniper grows densely on upper south slopes and only sparsely occurs on upper north slopes. Juniper moisture stress was found to be greater on upper south slope trees than on upper north slope trees. Frozen soils correlated well with the absence of juniper on upper north slopes. Domestic and wild animal grazing, man-made disturbances, and the lack of fire are also suggested as possible influences on the present day distribution of juniper in the study area.
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