Distribution, Occupancy, and Habitat Correlates of American Martens (Martes americana) in Rocky Mountain National Park, Colorado

Habitat Selection by American Martens (Martes americana) in Coastal Northwestern California

approved: __________________________________________________ John P. Hayes The Humboldt marten, Martes americana humboldtensis, has undergone a dramatic decline throughout its historical distribution in coastal Northwestern California. There is currently only one known population occupying an area occurring in <5% of the historical distribution of the subspecies. Conservation and management eff...

Plankton Population of Certain Lakes and Streams in the Rocky Mountain National Park, Colorado

Survival and productivity of a low-density black bear population in Rocky Mountain National Park, Colorado

Historically, Rocky Mountain National Park (RMNP) has supported a small black bear (Ursus americanus) population of low productivity. Increased visitor use of the park and development around its periphery could lead to a reduction in population viability of RMNP’s bear population or could increase the potential for human–bear conflict. Therefore, we investigated contemporary survival and produc...

Regulating overabundant ungulate populations: an example for elk in Rocky Mountain National Park, Colorado.

In many areas of the world, populations of native ungulates have become so abundant that they are believed to be harming vegetation and disrupting ecosystem function. Methods for controlling overabundance populations include culling animals from the population and controlling fertility using contraceptives. However, understanding the feasibility these alternatives requires insight into their lo...

Spruce and Fir Regeneration and Climate in the Forest-Tundra Ecotone of Rocky Mountain National Park, Colorado, U.S.A

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