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Social and Behavioral Sciences Commons™
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Full-Text Articles in Social and Behavioral Sciences
Patch Size And Landscape Effects On Density And Nesting Success Of Grassland Birds, Maiken Winter, Douglas H. Johnson, Jill A. Shaffer, Therese M. Donovan, W. Daniel Svedarsky
Patch Size And Landscape Effects On Density And Nesting Success Of Grassland Birds, Maiken Winter, Douglas H. Johnson, Jill A. Shaffer, Therese M. Donovan, W. Daniel Svedarsky
USGS Northern Prairie Wildlife Research Center
Cumnt management recommendations for grassland birds in North America emphasize providing large patches of grassland habitat within landscapes that have few forest or shrubland areas. These Bird Conservation Areas are being proposed under the assumption that large patches of habitat in treeless landscapes will maintain viable populations of grassland birds. This assumption requires that patch size and landscape features affect density and nesting success of grassland birds, and that these effects are consistent among years and regions and across focal species. However, these assumptions have not yet been validated for grassland binls, and the relative importance of local vegetation structure, …
Analyis Of Predator Movement In Prairie Landscapes With Contrasting Grassland Composition, Michael L. Phillips, William R. Clark, Sarah M. Nusser, Marsha A. Sovada, Raymond J. Greenwood
Analyis Of Predator Movement In Prairie Landscapes With Contrasting Grassland Composition, Michael L. Phillips, William R. Clark, Sarah M. Nusser, Marsha A. Sovada, Raymond J. Greenwood
USGS Northern Prairie Wildlife Research Center
Mammalian predation influences waterfowl breeding success in the U.S. northern Great Plains, yet little is known about the influence of the landscape on the ability of predators to find waterfowl nests. We used radiotelemetry to record nightly movements of red foxes (Vulpes vulpes) and striped skunks (Mephitis mephitis) in two 41.4-km2 study areas in North Dakota. Study areas contained either 15–20% grassland (low grassland composition) or 45–55% grassland (high grassland composition). Grasslands included planted cover, pastureland, and hayland. We predicted that the type and composition of cover types in the landscape would influence both predator …