Expanding human development and climate change are dramatically altering habitat conditions for wildlife. While the initial response of wildlife to changing environmental conditions is typically a shift in behaviour, little is known about the effects of these stressors on hibernation behaviour, an important life‐history trait that can subsequently affect animal physiology, demography, interspecific interactions and human‐wildlife interactions. Given future trajectories of land use and climate change, it is important that wildlife professionals understand how animals that hibernate are adapting to altered landscape conditions so that management activities can be appropriately tailored. We investigated the influence of human development and weather on hibernation in black bears (Ursus americanus), a species of high management concern, whose behaviour is strongly tied to natural food availability, anthropogenic foods around development and variation in annual weather conditions. Using GPS collar data from 131 den events of adult female bears (n = 51), we employed fine‐scale, animal‐specific habitat information to evaluate the relative and cumulative influence of natural food availability, anthropogenic food and weather on the start, duration and end of hibernation. We found that weather and food availability (both natural and human) additively shaped black bear hibernation behaviour. Of the habitat variables we examined, warmer temperatures were most strongly associated with denning chronology, reducing the duration of hibernation and expediting emergence in the spring. Bears appeared to respond to natural and anthropogenic foods similarly, as more natural foods, and greater use of human foods around development, both postponed hibernation in the fall and decreased its duration. Synthesis and applications. Warmer temperatures and use of anthropogenic food subsides additively reduced black bear hibernation, suggesting that future changes in climate and land use may further alter bear behaviour and increase the length of their active season. We speculate that longer active periods for bears will result in subsequent increases in human–bear conflicts and human‐caused bear mortalities. These metrics are commonly used by wildlife agencies to index trends in bear populations, but have the potential to be misleading when bear behaviour dynamically adapts to changing environmental conditions, and should be substituted with reliable demographic methods.

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In the face of climate change, wind energy represents an important alternative to oil and

Research suggests that runaway and homeless youth (RHY) in the United States are vulnerable to sex and labor trafficking. In this paper, we report and analyze estimates of sex and labor trafficking collected as part of the Atlanta Youth Count 2018, a community-based field survey of RHY between the ages of 14 and 25 in the metro-Atlanta area. A total of 564 participants were recruited and completed a survey that included questions about their backgrounds as well as the Human Trafficking Screening Tool (HTST). We found that 39.9% experienced some form of trafficking while homeless. While 15.6% of the youth reported commercial sexual exploitation while homeless, coerced labor (29.3%) or fraud (25.2%) were even more common experiences. Women, transgender, and gender nonconforming youth, as well young people who had prior system involvement and those who had been homeless for more than a year were the most likely to report having been trafficked. The significance of these findings for research and policy on RHY and trafficking are discussed.

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