Influence of Wind Facilities on Grassland Bird Behavior
Influence of Wind Facilities on Greater Prairie-Chicken and Sharp-tailed Grouse
Compendium of the Effects of Management Practices on Grassland Birds
Spatial Modeling of Ecosystem Services Provided by Grassland Ecosystems
M.S. 1996, University of Arkansas (Zoology)
B.S. 1993, University of Wisconsin (Biology)
1999-present USGS, Northern Prairie Wildlife Research Center (Ecologist)
1996-1999 USGS, Northern Prairie Wildlife Research Center (Biological Science Technician)
1997 University of Jamestown (Lecturer for Ecology)
1993-1996 University of Arkansas (Laboratory Instructor for General Biology)
Science and Products
Model parameters for representative wetland plant functional groups
Wetlands provide a wide variety of ecosystem services including water quality remediation, biodiversity refugia, groundwater recharge, and floodwater storage. Realistic estimation of ecosystem service benefits associated with wetlands requires reasonable simulation of the hydrology of each site and realistic simulation of the upland and wetland...Williams, Amber S.; Kiniry, James R.; Mushet, David M.; Smith, Loren M.; McMurry, Scott T.; Attebury, Kelly; Lang, Megan; McCarty, Gregory W.; Shaffer, Jill A.; Effland, William R.; Johnson, Mari-Vaughn V.
The influence of local- and landscape-level factors on wetland breeding birds in the Prairie Pothole Region of North and South Dakota
We examined the relationship between local- (wetland) and landscape-level factors and breeding bird abundances on 1,190 depressional wetlands in the Prairie Pothole Region of North and South Dakota during the breeding seasons in 1995–97. The surveyed wetlands were selected from five wetland classes (alkali, permanent, semipermanent, seasonal, or...Igl, Lawrence D.; Shaffer, Jill A.; Johnson, Douglas H.; Buhl, Deborah A.
Effects of wind-energy facilities on grassland bird distributions
The contribution of renewable energy to meet worldwide demand continues to grow. Wind energy is one of the fastest growing renewable sectors, but new wind facilities are often placed in prime wildlife habitat. Long-term studies that incorporate a rigorous statistical design to evaluate the effects of wind facilities on wildlife are rare. We...Shaffer, Jill A.; Buhl, Deb
Does body size affect a bird's sensitivity to patch size and landscape structure?
Larger birds are generally more strongly affected by habitat loss and fragmentation than are smaller ones because they require more resources and thus larger habitat patches. Consequently, conservation actions often favor the creation or protection of larger over smaller patches. However, in grassland systems the boundaries between a patch and the...Winter, Maiken; Johnson, Douglas H.; Shaffer, Jill A.
Patch size and landscape effects on density and nesting success of grassland birds
Current 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...Winter, Maiken; Johnson, Douglas H.; Shaffer, Jill A.; Donovan, Therese M.; Svedarsky, W. Daniel
Habitat and nesting of Le Conte's Sparrows in the northern tallgrass prairie
Little is known about the breeding biology of the Le Conte's Sparrow (Ammodramus leconteii), probably because of its secretive nature. We provide new information on several aspects of Le Conte's Sparrow breeding biology, including rates of nest parasitism by Brown-headed Cowbirds (Molothrus ater) and potential factors affecting breeding densities...Winter, Maiken; Shaffer, Jill A.; Johnson, Douglas H.; Donovan, Therese M.; Svedarsky, W. Daniel; Jones, P.W.; Euliss, Betty R.
Variability in vegetation effects on density and nesting success of grassland birds
The structure of vegetation in grassland systems, unlike that in forest systems, varies dramatically among years on the same sites, and among regions with similar vegetation. The role of this variation in vegetation structure on bird density and nesting success of grassland birds is poorly understood, primarily because few studies have included...Winter, Maiken; Johnson, Douglas H.; Shaffer, Jill A.
Nesting biology of three grassland passerines in the northern tallgrass prairie
Basic nesting information on grassland passerines is needed for improving grassland bird management. Among the information needs are (1) the suitability of nesting habitat, (2) periods during the breeding season in which birds are most vulnerable to disturbances, and (3) how to fit grasslands into a prioritization scheme for conservation....Winter, Maiken; Johnson, Douglas H.; Shaffer, Jill A.; Svedarsky, W. Daniel