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Social and Behavioral Sciences Commons™

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Ecology and Evolutionary Biology

Selected Works

2002

Articles 1 - 4 of 4

Full-Text Articles in Social and Behavioral Sciences

Costs Of Reproduction In The Terrestrial Isopod Porcellio Laevis Latreille (Isopoda: Oniscidea): Brood-Bearing And Locomotion, Scott Kight Jan 2002

Costs Of Reproduction In The Terrestrial Isopod Porcellio Laevis Latreille (Isopoda: Oniscidea): Brood-Bearing And Locomotion, Scott Kight

Scott Kight

Female terrestrial isopods carry eggs and young throughout early development, a habit that places constraints on reproductive success. One such constraint is impaired locomotion during the brooding period. Brooding and non-brooding females were subjected to a negative-phototaxis experiment in which females moved away from a light source along a graduated surface. In both groups, velocity was positively and significantly correlated with distance traveled. Velocity and distance were also significantly associated with the physical dimensions of the exoskelton: larger females moved greater distances at faster speeds. Non-brooding females, however, moved significantly farther at significantly greater velocities than brooding females, suggesting that …

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Self Reliant Agriculture For Arid Lands, David A. Bainbridge Jan 2002

Self Reliant Agriculture For Arid Lands, David A. Bainbridge

David A Bainbridge

More than a billion people face the challenge of supporting themselves in the world's arid lands. Much can be improved by refining and adopting the best traditional practices and crops from around the world. The lessons learned can also help develop new and improved agronomic practices and crops.

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A Role For Natural Resource Social Science In Biodiversity Risk Assessment, Philip J. Nyhus, Frances R. Westley, Robert C. Lacey, Philip S. Miller Jan 2002

A Role For Natural Resource Social Science In Biodiversity Risk Assessment, Philip J. Nyhus, Frances R. Westley, Robert C. Lacey, Philip S. Miller

Philip J. Nyhus

Biologists have made considerable progress in developing realistic simulation models to predict extinction risks for threatened species. Social scientists have to date had a more limited role in these efforts. This limited involvement comes despite the growing acknowledgment by population biologists and simulation modelers that this additional input is necessary for these models to accurately reflect the impact of humans and human-dominated landscapes on wildlife populations. We argue that collaborations among social and biological scientists can provide unparalleled opportunities to develop new conceptual and simulation tools for biodiversity risk assessment. One challenge is that while the value of interdisciplinary research …

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Water-Based Recreational Benefits Of Conservation Programs: The Case Of Conservation Tillage On U.S. Cropland, Kathy Baylis, Peter Feather, Merritt Padgitt, Carmen Sandretto Dec 2001

Water-Based Recreational Benefits Of Conservation Programs: The Case Of Conservation Tillage On U.S. Cropland, Kathy Baylis, Peter Feather, Merritt Padgitt, Carmen Sandretto

Kathy Baylis

No abstract provided.

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