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Full-Text Articles in Life Sciences
Body Condition Of Endangered Humpback Chub In Relation To Temperature And Discharge In The Lower Colorado River, Forest P. Hayes, Michael J. Dodrill, Brandon S. Gerig, Colton Finch, William E. Pine Iii
Body Condition Of Endangered Humpback Chub In Relation To Temperature And Discharge In The Lower Colorado River, Forest P. Hayes, Michael J. Dodrill, Brandon S. Gerig, Colton Finch, William E. Pine Iii
Watershed Sciences Faculty Publications
Determining the population status of endangered Humpback Chub Gila cypha is a major component of the adaptive management program designed to inform operation of Glen Canyon Dam upstream from Grand Canyon, Arizona. In recent decades, resource managers have identified a portfolio of management actions (with intermittent implementation) to promote population recovery of Humpback Chub, including nonnative fish removal, changes in water release volumes and discharge ramping schedules, and reductions in hydropower peaking operations. The Humpback Chub population in Grand Canyon has increased over this same period, causal factors for which are unclear. We took advantage of unusual hydrology in the …
Beavers, Jimmy D. Taylor, Greg K. Yarrow, James E. Miller
Beavers, Jimmy D. Taylor, Greg K. Yarrow, James E. Miller
Wildlife Damage Management Technical Series
The American beaver (Castor canadensis) (Figure 1) is known as an “ecosystem engineer” because of the benefits their dams provide to biological diversity and ecosystem function. It also is considered a “keystone species” because of its ability to transform its environment, creating new habitats upon which other species depend. Despite the many positive benefits beavers provide through foraging and dam building, beavers also create conflict with people when their activities cause damage. The authors of this publication acknowledge and appreciate the many positive benefits that beavers provide; however, the focus of this publication is to provide basic information on beaver …