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A Behavioral Investigation of the Thermal Solar Niche

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dc.contributor.advisor Luther, David A.
dc.contributor.author Boyer, Emma Gerald
dc.creator Boyer, Emma Gerald
dc.date 2014-10-14
dc.date.accessioned 2015-01-29T17:53:52Z
dc.date.available 2015-01-29T17:53:52Z
dc.date.issued 2015-01-29
dc.identifier.uri https://hdl.handle.net/1920/9127
dc.description.abstract The means by which a species survives in different environmental conditions is central to thoroughly understanding its ecology, evolution, and conservation. As we face a warming climate, developing a more comprehensive picture of an animals’ energetic (specifically, thermal) limitations is critical. Although temperature is often considered the primary parameter governing an animal’s thermal state, water availability, wind, and solar energy are also important. The thermal effect of solar energy is often assumed but is rarely measured. Because behavioral adaptation can be a critical tool for survival in changing and highly variable climates, behavioral patterns in relation to environmental conditions such as solar energy serve as a central way to assess animal responses to climate change. To investigate this fundamental yet overlooked aspect of environmental stress on animals, I conducted a shade manipulation experiment to control the amount of solar energy exposure to free ranging house sparrows, Passer domesticus, and better understand the effects of solar energy, particularly at high summer temperatures, on animal behavior. As predicted, bird attendance increased with increasing shade relative to the surrounding exposed areas. In contrast to my predictions bird attendance also increased with increasing temperature. An interaction between temperature and the amount of shade was also an explanatory variable for house sparrow attendance, which demonstrates the complexity of thermal pressures on animals. This study shows that as we continue to assess and predict how animals respond to climate change, we should incorporate behavior and quantify additive thermal pressures such as solar energy.
dc.language.iso en en_US
dc.subject Climate change en_US
dc.subject bird en_US
dc.subject behavioral plasticity en_US
dc.subject solar niche en_US
dc.subject solar energy en_US
dc.subject temperature en_US
dc.title A Behavioral Investigation of the Thermal Solar Niche en_US
dc.type Thesis en
thesis.degree.name Master of Science in Environmental Science and Policy en_US
thesis.degree.level Master's en
thesis.degree.discipline Environmental Science and Policy en
thesis.degree.grantor George Mason University en


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