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Niche separation of grizzly (Ursus arctos) and American black bears (Ursus americanus) in Yellowstone National Park
Three manuscripts constitute the following dissertation. Chapter one studied how sympatric grizzly bears and black bears in Yellowstone National Park relied on different food items to meet their energetic requirements. In ...
Exploring the life histories of cephalopods using stable isotope analysis of an archival tissue
Relatively little is known about the life histories of cephalopods compared to many other groups of major marine predators such as fish, marine mammals, and sea birds. Increased importance of cephalopods to global fisheries ...
Genetic history of Chinook and sockeye salmon analyzed using ancient and contemporary mitochondrial DNA
Pacific salmon (Oncorhynchus spp.) serve an important social and economic role in western North America. Despite historical abundance, native salmonids are now at risk of extinction throughout much of their native range. ...
MECHANISMS OF INVASIVE RANGE EXPANSION: PLASTICITY, GENETIC VARIATION, AND EPIGENETIC VARIATION IN A CLONAL SPECIES
Adaptation to novel and changing environmental conditions is crucial for the persistence and range expansion of species in the context of biological invasions and climate change. Investigating the mechanisms by which ...
Feeding Ecology and Selected Other Aspects of the Behavior and Ecology of the Burrowing Owl (Speotyto cunicularia)
Durine the summer of 1976, the author studied a population of burrowing owls (Speotyto cunicularia) predominately located in Grant County, Washington. Much of what he observed is described in this paper along with a ...