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Winter survival and cause-specific mortality of white-tailed deer in northern Minnesota: An update
March 4, 2022
Ongoing studies that examine the influences of environmental, intrinsic, and demographic factors on survival and cause-specific mortality rates of white-tailed deer (Odocoileus virginianus) have been critical to enhancing our understanding of population performance and to improving management. A recent evaluation … read more
Posted in Deer, Predator/Prey Relationships, Resources

Of wolves and bears: Seasonal drivers of interference and exploitation competition between apex predators
March 4, 2022
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
Posted in Bears, Predator/Prey Relationships, Resources | Tagged Canis lupus, exploitation competition, interference competition, interspecific interactions, Scandinavia, Ursus arctos, yellowstone

Influence of body mass and environmental conditions on winter mortality risk of a northern ungulate: Evidence for a late-winter survival bottleneck
December 30, 2021
A relationship between winter weather and survival of northern ungulates has long been established, yet the possible roles of biological (e.g., nutritional status) and environmental (e.g., weather) conditions make it important to determine which potential limiting factors are most influential. … read more
Posted in Deer, Predator/Prey Relationships | Tagged Canis latrans, Canis lupus, cause-specific mortality, Odocoileus virginianus, weather, winter severity index

Factors Limiting Deer Abundance in the Upper Peninsula
August 29, 2021
In the Upper Peninsula of Michigan, there are numerous factors that may act singularly or in combination to influence deer abundance. For instance, if food availability was greatly reduced, especially during critical times, or habitat that is essential for survival … read more
Posted in Predator/Prey Relationships | Tagged Deer, Upper Peninsula

Evaluating carnivore harvest as a tool for increasing elk calf survival and recruitment
August 29, 2021
Elk (Cervus canadensis) are an iconic species throughout the western United States and play a large role across ecological (Kauffman et al. 2010), social (Haggerty and Travis 2006) and economic (US Department of the Interior et al. 2014) landscapes. However, … read more
Posted in Predator/Prey Relationships | Tagged carnivore, Cervus canadensis, elk

Influence of body mass and environmental conditions on winter mortality risk of a northern ungulate: Evidence for a late-winter survival bottleneck
July 31, 2021
Identifying limiting factors for animals with seasonally dynamic life histories sometimes requires understanding intra-annual periods of resource scarcity (e.g., Ashmole, 1963). For ungulates living in northern environments, winter is generally a period of negative energy budget when forage provides some … read more
Posted in General, Predator/Prey Relationships | Tagged Canis latrans, Canis lupus, cause-specific mortality, Odocoileus virginianus, weather, winter severity index