منابع مشابه
Historic aspen recruitment, elk, and wolves in northern Yellowstone National Park, USA
We conducted an analysis of aspen (Populus tremuloides) overstory recruitment on the northern range of Yellowstone National Park (YNP) using information provided in a monograph published by Warren (Warren, E.R., 1926. A study of beaver in the Yaney region of Yellowstone National Park, Roosevelt-Wildl. Ann. 1, 1±191), increment cores collected from riparian aspen stands in 1998, and an extensive...
متن کاملState–space Models Link Elk Movement Patterns to Landscape Characteristics in Yellowstone National Park
Explaining and predicting animal movement in heterogeneous landscapes remains challenging. This is in part because movement paths often include a series of short, localized displacements separated by longer-distance forays. This multiphasic movement behavior reflects the complex response of an animal to present environmental conditions and to its internal behavioral state. This state is an auto...
متن کاملRegulating 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...
متن کاملWolves, Elk, Bison, and Secondary Trophic Cascades in Yellowstone National Park
Wolves were reintroduced into Yellowstone National Park in 1995/96, likely reestablishing a trophic cascade involving wolves, elk, and woody browse species. The return of wolves may have also triggered a secondary trophic cascade involving bison, which are generally a minor prey species for wolves in northern Yellowstone. We hypothesize a sequence of events in northern Yellowstone where: 1) wol...
متن کاملModel-based assessment of aspen responses to elk herbivory in Rocky Mountain National Park, USA.
In Rocky Mountain National Park (RMNP), aspen (Populus tremuloides Michx.) has been observed to be declining on elk (Cervus elaphus nelsoni) winter range for many decades. To support elk management decisions, the SAVANNA ecosystem model was adapted to explore interactions between elk herbivory and aspen dynamics. The simulated probability of successful vegetative regeneration for senescent aspe...
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ژورنال
عنوان ژورنال: Blue Jay
سال: 1985
ISSN: 2562-5667,0006-5099
DOI: 10.29173/bluejay4500