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Full-Text Articles in Life Sciences
Does Removing Coyotes For Livestock Protection Benefit Free-Ranging Ungulates?, Justin L. Harrington, Michael R. Conover
Does Removing Coyotes For Livestock Protection Benefit Free-Ranging Ungulates?, Justin L. Harrington, Michael R. Conover
Wildland Resources Faculty Publications
We studied the effects of coyote (Canis latrans) control for livestock protection on native ungulates during 2003 and 2004 on 7 sites in Utah and Colorado, USA, totaling over 1,900 km2. We found no relationships between coyote control variables and offspring/female deer ratios. However, control effort (no. of hr spent aerial gunning for coyotes) and success (no. of coyotes taken) were positively correlated with numbers of mule deer (Odocoileus hemionus) and pronghorn (Antilocapra americana) observed per kilometer of transect. Our results suggest that coyote control for livestock protection may increase densities of mule deer and pronghorn in areas where it …
Influence Of Population Reduction On Predator Home Range Size And Spatial Overlap, Shandra Nicole Frey, Michael R. Conover
Influence Of Population Reduction On Predator Home Range Size And Spatial Overlap, Shandra Nicole Frey, Michael R. Conover
Wildland Resources Faculty Publications
The increasing populations of red foxes (Vulpes vulpes), raccoons (Procyon lotor), and striped skunks (Mephitis mephitis) in the Intermountain West have contributed to low waterfowl recruitment in recent decades. This effect prompted the need for predator removal at many waterfowl refuges, such as the Bear River Migratory Bird Refuge (BRMBR) in the Great Salt Lake ecosystem. Our study examined the effects of the removal of predatory mammals at the BRMBR on the home range size and spatial overlap of the remaining populations of red foxes, raccoons, and striped skunks. The removal of predators through traps, snares, and night-shooting created a …
Spatially Scaled Response Of A Lazuli Bunting Population To Fire, Michael L. Wolfe, Andreas Leidolf, Tim Nuttle
Spatially Scaled Response Of A Lazuli Bunting Population To Fire, Michael L. Wolfe, Andreas Leidolf, Tim Nuttle
Wildland Resources Faculty Publications
We examined the response of Lazuli Bunting (Passerina amoena) to fire in Gambel oak (Quercus gambelii) woodland at Camp Williams, Utah, during 1993–1998. Overall, Lazuli Bunting abundance on the study area increased significantly during the 2 years after a stand-replacing wildfire, which covered 800 ha of Gambel oak woodland. This increase suggested that Lazuli Buntings respond positively to fire. However, a comparison of pre- and post-fire abundance of Lazuli Bunting for 2 groups of monitoring plots with different fire histories showed that abundance was significantly greater during the post-fire period for both burned and unburned plots. …