Index Catalog // ScholarsArchive@OSU

Creator:: Foster, Lee J., Dugger, Katie M., Hagen, Christian A., and Budeau, David A.
Abstract:: Greater sage-grouse (Centrocercus urophasianus) have been subject to long-term and continuing declines in population and habitat since European settlement of western North America. Increased wildfire activity constitutes a primary threat to the species in western portions of their range, with documented declines in wildfire-affected populations. Following a 187,000-ha wildfire in...
Resource Type:: Article

Creator:: Robinson, Samantha G., Haukos, David A., Plumb, Reid T., Hagen, Christian A., Pitman, James C., Lautenbach, Joseph M., Sullins, Daniel S., Kraft, John D., and Lautenbach, Jonathan D.
Abstract:: Livestock fences have been hypothesized to significantly contribute to mortality of lesser prairie-chickens (Tympanuchus pallidicinctus); however, quantification of mortality due to fence collisions is lacking across their current distribution. Variation in fence density, landscape composition and configuration, and land use could influence collision risk of lesser prairie-chickens. We monitored fences...
Resource Type:: Article

Creator:: Oyler-McCance, Sara J., DeYoung, Randall W., Fike, Jennifer A., Hagen, Christian A., Johnson, Jeff A., Larsson, Lena C., and Patten, Michael A.
Abstract:: The distribution of the Lesser Prairie-Chicken (Tympanuchus pallidicinctus) has been markedly reduced due to loss and fragmentation of habitat. Portions of the historical range, however, have been recolonized and even expanded due to planting of conservation reserve program (CRP) fields that provide favorable vegetation structure for Lesser Prairie-Chickens. The source...
Resource Type:: Article

Creator:: Winder, Virginia L., Carrlson, Kaylan M., Gregory, Andrew J., Hagen, Christian A., Haukos, David A., Kesler, Dylan C., Larsson, Lena C., Matthews, Ty W., McNew, Lance B., Patten, Michael A., Pitman, Jim C., Powell, Larkin A., Smith, Jennifer A., Thompson, Tom, Wolfe, Donald H., and Sandercock, Brett K.
Abstract:: Conservation of wildlife depends on an understanding of the interactions between animal movements and key landscape factors. Habitat requirements of wide-ranging species often vary spatially, but quantitative assessment of variation among replicated studies at multiple sites is rare. We investigated patterns of space use for 10 populations of two closely...
Resource Type:: Article

Creator:: Hagen, Christian A., Pitman, James C., Sandercock, Brett K., Wolfe, Don H., Robel, Robert J., Applegate, Roger D., and Oyler-McCance, Sara J.
Abstract:: Cumulative loss of habitat and long-term decline in the populations of the Lesser Prairie-Chicken (Tympanuchus pallidicinctus) have led to concerns for the species’ viability throughout its range in the southern Great Plains. For more efficient conservation past and present distributions of genetic variation need to be understood. We examined the...
Resource Type:: Article

Creator:: Hagen, Christian A., Willis, Mitchell J., Glenn, Elizabeth M., and Anthony, Robert G.
Abstract:: The distribution and geographic range of Greater Sage-Grouse (Centrocercus urophasianus) have been reduced by 56% since European settlement. Although loss and fragmentation of sagebrush (Artemisia spp.) habitats have been cited as the primary causes for the decline of the species, degradation of existing habitat also has been considered an important...
Resource Type:: Article

Creator:: Baruch-Mordo, Sharon, Evans, Jeffrey S., Severson, John P., Naugle, David E., Maestas, Jeremy D., Kiesecker, Joseph M., Falkowski, Michael J., Hagen, Christian A., and Reese, Kerry P.
Abstract:: Conservation investment in management of at-risk species can be less costly than a delay-and-repair approach implemented after species receive legal protection. The United States Endangered Species Act candidate species designation represents an opportunity to implement proactive management to avoid future listing. Such efforts require substantial investments, and the challenge becomes...
Resource Type:: Article

Creator:: Hagen, Christian A., Grisham, Blacke A., Boal, Clint W., and Haukos, David A.
Abstract:: The distribution and range of lesser prairie-chicken (Tympanuchus pallidicinctus) has been reduced by >90% since European settlement of the Great Plains of North America. Currently, lesser prairie-chickens occupy 3 general vegetation communities: sand sagebrush (Artemisia filifolia), sand shinnery oak (Quercus havardii), and mixed-grass prairies juxtaposed with Conservation Reserve Program grasslands....
Resource Type:: Article

Creator:: Dusek, Robert J., Hagen, Christian A., Franson, J. Christian, Budeau, David A., and Hofmeister, Erik K.
Abstract:: Greater sage-grouse (Centrocercus urophasianus; sage-grouse) are highly susceptible to infection with West Nile virus (WNV), with substantial mortality reported in wild populations and in experimentally infected birds. Although sage-grouse are hunted throughout much of their range, they have also recently been considered for protection under the Endangered Species Act. We...
Resource Type:: Article

Creator:: Baruch-Mordo, Sharon, Evans, Jeffrey S., Severson, John P., Naugle, David E., Maestas, Jeremy D., Kiesecker, Joseph M., Falkowski, Michael J., Hagen, Christian A., and Reese, Kerry P.
Abstract:: Conservation investment in management of at-risk species can be less costly than a delay-and-repair approach implemented after species receive legal protection. The United States Endangered Species Act candidate species designation represents an opportunity to implement proactive management to avoid future listing. Such efforts require substantial investments, and the challenge becomes...
Resource Type:: Article

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