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The responses of individual species to environmental changes can be manifested at multiple levels that range from individual-level (i.e., behavioral responses) to population-level (i.e., demographic) impacts. Major environmental changes that ultimately result in population level impacts are often first detected as individual-level responses. For example, herbivores respond to limited forage availability during drought periods by increasing the duration of foraging periods and expanding home range areas to compensate for the reduction in forage. However, if the individual-level responses are not sufficient to compensate for reduced forage availability, reduced survival and reproductive rates may result. We studied...
Categories: Publication;
Types: Citation,
Report;
Tags: American pronghorn,
Drought,
Drought, Fire and Extreme Weather,
Mammals,
National CASC,
Abstract (from http://www.esajournals.org/doi/abs/10.1890/ES15-00266.1): Climate often drives ungulate population dynamics, and as climates change, some areas may become unsuitable for species persistence. Unraveling the relationships between climate and population dynamics, and projecting them across time, advances ecological understanding that informs and steers sustainable conservation for species. Using pronghorn ( Antilocapra americana) as an ecological model, we used a Bayesian approach to analyze long-term population, precipitation, and temperature data from 18 populations in the southwestern United States. We determined which long-term (12 and 24 months) or short-term (gestation trimester and lactation period)...
Categories: Publication;
Types: Citation;
Tags: Drought,
Drought, Fire and Extreme Weather,
Mammals,
National CASC,
Wildlife and Plants,
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