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Yellowstone Science – The Challenge of Understanding Northern Yellowstone Elk Dynamics after Wolf Reintroduction

The status and trend of the northern Yellowstone elk herd has been an enduring conservation issue throughout the history of Yellowstone National Park. It is the largest of about seven migratory elk herds that graze the park’s high-elevation meadows during … read more

Killing Wolves And Farming Caribou Benefit Industry, Not Caribou: A Response To Stan Boutin

In Nature Alberta Fall 2016, we wrote an open letter to Premier Notley (Proulx et al. 2016), where we requested that the Alberta Government refrain from predator control and fencing caribou for recovering the Little Smoky caribou population. In addition, … read more

Predator Foraging Response To A Resurgent Dangerous Prey

Prey switching occurs when a generalist predator kills disproportionately more of an abundant prey species and correspondingly spares a rarer species. Although this behaviour is a classic stabilizing mechanism in food web models, little is known about its operation in … read more

Density-Dependent Intraspecific Aggression Regulates Survival In Northern Yellowstone Wolves (Canis Lupus)

Understanding the population dynamics of top-predators is essential to assess their impact on ecosystems and to guide their management. Key to this understanding is identifying the mechanisms regulating vital rates. Determining the influence of density on survival is necessary to … read more

Body Size and Predatory Performance in Wolves: Is Bigger Better?

Large body size hinders locomotor performance in ways that may lead to trade-offs in predator foraging ability that limit the net predatory benefit of larger size. For example, size-related improvements in handling prey may come at the expense of pursuing … read more

Predatory Senescence in Ageing Wolves

It is well established that ageing handicaps the ability of prey to escape predators, yet surprisingly little is known about how ageing affects the ability of predators to catch prey. Research into long-lived predators has assumed that adults have uniform … read more

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