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Creator:: Ormand, Elora J.
Abstract:: Competitive exclusion is a key concept in ecology describing the exclusion of one species by another from access to a limited resource. Competitive interactions between chipmunk species in the Great Basin, documented by James Brown in 1970, are often used as a textbook example of competitive exclusion. Whether competitive interactions...
Resource Type:: Honors College Thesis
Full Text:: , depleting the δ13C signal of C3 plant tissues (Ben-David and Flaherty 2012). δ13C for C3 plants generally

Creator:: Faber, M. Kate
Abstract:: Millions of acres of rangeland in the western U.S. is shared habitat by elk (Cervus canadensis), mule deer (Odocoileus hemionus), and cattle (Bos taurus). Potential competition between these ungulates for the same forage species can be understood from their diet composition. I used DNA metabarcoding methods with trnL primers to...
Resource Type:: Honors College Thesis
Full Text:: ˚C) and dry. This was done by starting at the established vegetation plot centers and searching

Creator:: Yates, Margaret E.
Abstract:: Investigating the insectivorous diet of the Trowbridge’s shrew (Sorex trowbridgii) across forest types can illustrate how forest management affects biotic communities. I used DNA metabarcoding methods with ANML primers to identify stomach and intestines contents from shrews caught in pitfall traps in the HJ Andrews Experimental Forest (HJA) and Willamette...
Resource Type:: Honors College Thesis
Full Text:: differences in plant species composition (Carey and Johnson 1995). When small mammal species were studied

Creator:: Kendall, Zachary D.
Abstract:: Juniper (Juniperus spp.) encroachment into the sagebrush steppe ecoregion is one of the main causes of sagebrush degradation and can alter the understory vegetative community by outcompeting native shrubs and grasses, which reduces the available forage and cover for small mammals. Coyotes (Canis latrans) are generalist, omnivorous predators in the...
Resource Type:: Honors College Thesis
Full Text:: landscape (Johnson and Hansen 1979, Todd and Keith 1983). Small mammal communities change with alterations

ScholarsArchive@OSU