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Posts Tagged: yellowstone

Of wolves and bears: Seasonal drivers of interference and exploitation competition between apex predators

Competition between apex predators can alter the strength of top-down forcing, yet we know little about the behavioral mechanisms that drive competition in multipredator ecosystems. Interactions between predators can be synergistic (facilitative) or antagonistic (inhibitive), both of which are widespread … read more

Conflicts and Attitudes Regarding the Return of the Grey Wolf to California

Beginning in the mid-nineteenth century, Euro-American settlers began the task of changing the landscape of California from vast expanses of wetland and forest into agricultural land. Since the arrival and eventual settlement of Spanish colonizers, ranching cattle has been a … read more

Wolves without borders: Transboundary survival of wolves in Banff National Park over three decades

Large carnivores are important ecological drivers of ecosystem dynamics when they occur at ecologically effective densities. They are also challenging to conserve, especially in transboundary settings such as along borders of parks and protected areas. Here, we tested for effects … read more

Tall willow thickets return to northern Yellowstone

Northern Yellowstone National Park provides an example of passive restoration, as wetlands and riparian areas there lost most tall willows in the 20th century, due to intensive herbivory by elk (Cervus canadensis). Following large carnivore restoration in the late 1990s, … read more

Wolves for Yellowstone: Dynamics in Time and Space

The reintroduction of gray wolves (Canis lupus) to Yellowstone National Park is the most celebrated ecological experiment in history. As predicted by population models, the rapid recovery of a wolf population caused both temporal and spatial variability in wolf–ungulate interactions … read more

Aspen is Making a Comeback in and Around Yellowstone National Park, Because of Predators

Quaking aspen (Populus tremuloides) recruitment during the 1980s–90s was suppressed by Rocky Mountain elk (Cervus canadensis) herbivory on winter ranges in the Yellowstone region, and saplings (young aspen taller than 2 m) were rare. Following the 1995–96 reintroduction of gray … read more

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