Mass and energy budgets of animals: Behavioral and ecological implications

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The common goal of these diverse projects is to understand the mechanisms of how animal populations respond to the continual changes in their environment in both time and space. Our models are mechanistic allowing us to explore how a wide array of environmental variables may determine individual performance. Large scale climate change and its effect on animal populations can be seen as quantitative extensions of biological responses to smaller scales of environmental variability. Changes in developmental rates or reproductive levels of individuals, extension or contraction of geographic ranges, and modification of community organization have all been documented in response to ... continued below

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Pages: (46 p)

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Porter, W.P. January 1, 1993.

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Description

The common goal of these diverse projects is to understand the mechanisms of how animal populations respond to the continual changes in their environment in both time and space. Our models are mechanistic allowing us to explore how a wide array of environmental variables may determine individual performance. Large scale climate change and its effect on animal populations can be seen as quantitative extensions of biological responses to smaller scales of environmental variability. Changes in developmental rates or reproductive levels of individuals, extension or contraction of geographic ranges, and modification of community organization have all been documented in response to previous changes in habitats. We know from our biophysical work that some changes in function are driven by microclimate conditions directly, and some are mediated indirectly through ecological parameters such as the food supply. Our research is guided by a comprehensive conceptual scheme of the interaction of an animal with its environment. The physical and physiological properties of the organism, and the range of available microclimates, set bounds on the performance of organismal function, such as growth, reproduction, storage, and behavior. To leave the most offspring over a lifetime, animals must perform those functions in a way that maximizes the amount of resources devoted to reproduction. Maximizing the total size of the budget and minimizing those budget items not devoted to reproduction are crucial. Animals trade off among expenditures for current and future reproduction. Both water and energy are important, potentially limiting resources. Projects described here include empirical studies and theoretical models.

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Pages: (46 p)

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OSTI; NTIS; GPO Dep.

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  • Other: DE93016205
  • Report No.: DOE/ER/60633-8
  • Grant Number: FG02-88ER60633
  • DOI: 10.2172/6527103 | External Link
  • Office of Scientific & Technical Information Report Number: 6527103
  • Archival Resource Key: ark:/67531/metadc1204828

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • January 1, 1993

Added to The UNT Digital Library

  • July 5, 2018, 11:11 p.m.

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  • Aug. 7, 2018, 1:44 p.m.

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Porter, W.P. Mass and energy budgets of animals: Behavioral and ecological implications, report, January 1, 1993; United States. (digital.library.unt.edu/ark:/67531/metadc1204828/: accessed January 20, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.