Greater Sage-Grouse ( Centrocercusurophasianus) hen survival: effects of raptors, anthropogenic and landscape features, and hen behavior
Survival of breeding-age hens has been identified as the demographic rate with the greatest potential to influence population growth of Greater Sage-Grouse (Centrocercus urophasianus (Bonaparte, 1827); hereafter “Sage-Grouse”). During 2008–2011, we collected summer survival data from 427 Sage-Grouse...
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2014
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Online Access: | http://dx.doi.org/10.1139/cjz-2013-0263 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjz-2013-0263 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjz-2013-0263 |
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crcansciencepubl:10.1139/cjz-2013-0263 2024-09-15T18:41:33+00:00 Greater Sage-Grouse ( Centrocercusurophasianus) hen survival: effects of raptors, anthropogenic and landscape features, and hen behavior Dinkins, J.B. Conover, M.R. Kirol, C.P. Beck, J.L. Frey, S.N. 2014 http://dx.doi.org/10.1139/cjz-2013-0263 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjz-2013-0263 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjz-2013-0263 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 92, issue 4, page 319-330 ISSN 0008-4301 1480-3283 journal-article 2014 crcansciencepubl https://doi.org/10.1139/cjz-2013-0263 2024-08-01T04:10:02Z Survival of breeding-age hens has been identified as the demographic rate with the greatest potential to influence population growth of Greater Sage-Grouse (Centrocercus urophasianus (Bonaparte, 1827); hereafter “Sage-Grouse”). During 2008–2011, we collected summer survival data from 427 Sage-Grouse hens in southern Wyoming, USA. We assessed the effects of raptor densities, anthropogenic features, landscape features, and Sage-Grouse hen behavior on Sage-Grouse hen survival. Survival of Sage-Grouse hens was positively associated with the proportion of big sagebrush (genus Artemisia L.) habitat within 0.27 km radius and road density and negatively associated with power-line density, proximity to forested habitat, and topographic ruggedness index within 0.27 km radius (TRI 0.27 ). Raptor densities did not have individual effects on Sage-Grouse survival; however, an interaction between site-specific exposure to Golden Eagle (Aquila chrysaetos (L., 1758)) density (GOEA) and TRI 0.27 indicated that negative effects of GOEA and TRI 0.27 were dampened in areas with both high TRI 0.27 and high GOEA. Survival of nonreproductive hens was greater than brooding or nesting hens. Hens that stayed in intermediate-size flocks and yearling hens had higher survival than hens in small or large flocks and hens >2 years old. Results indicated that risk of death for Sage-Grouse hens was greater relative to potential raptor perches but not anthropogenic and landscape variables that could provide food subsidies for predators. Article in Journal/Newspaper Aquila chrysaetos golden eagle Canadian Science Publishing Canadian Journal of Zoology 92 4 319 330 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
Survival of breeding-age hens has been identified as the demographic rate with the greatest potential to influence population growth of Greater Sage-Grouse (Centrocercus urophasianus (Bonaparte, 1827); hereafter “Sage-Grouse”). During 2008–2011, we collected summer survival data from 427 Sage-Grouse hens in southern Wyoming, USA. We assessed the effects of raptor densities, anthropogenic features, landscape features, and Sage-Grouse hen behavior on Sage-Grouse hen survival. Survival of Sage-Grouse hens was positively associated with the proportion of big sagebrush (genus Artemisia L.) habitat within 0.27 km radius and road density and negatively associated with power-line density, proximity to forested habitat, and topographic ruggedness index within 0.27 km radius (TRI 0.27 ). Raptor densities did not have individual effects on Sage-Grouse survival; however, an interaction between site-specific exposure to Golden Eagle (Aquila chrysaetos (L., 1758)) density (GOEA) and TRI 0.27 indicated that negative effects of GOEA and TRI 0.27 were dampened in areas with both high TRI 0.27 and high GOEA. Survival of nonreproductive hens was greater than brooding or nesting hens. Hens that stayed in intermediate-size flocks and yearling hens had higher survival than hens in small or large flocks and hens >2 years old. Results indicated that risk of death for Sage-Grouse hens was greater relative to potential raptor perches but not anthropogenic and landscape variables that could provide food subsidies for predators. |
format |
Article in Journal/Newspaper |
author |
Dinkins, J.B. Conover, M.R. Kirol, C.P. Beck, J.L. Frey, S.N. |
spellingShingle |
Dinkins, J.B. Conover, M.R. Kirol, C.P. Beck, J.L. Frey, S.N. Greater Sage-Grouse ( Centrocercusurophasianus) hen survival: effects of raptors, anthropogenic and landscape features, and hen behavior |
author_facet |
Dinkins, J.B. Conover, M.R. Kirol, C.P. Beck, J.L. Frey, S.N. |
author_sort |
Dinkins, J.B. |
title |
Greater Sage-Grouse ( Centrocercusurophasianus) hen survival: effects of raptors, anthropogenic and landscape features, and hen behavior |
title_short |
Greater Sage-Grouse ( Centrocercusurophasianus) hen survival: effects of raptors, anthropogenic and landscape features, and hen behavior |
title_full |
Greater Sage-Grouse ( Centrocercusurophasianus) hen survival: effects of raptors, anthropogenic and landscape features, and hen behavior |
title_fullStr |
Greater Sage-Grouse ( Centrocercusurophasianus) hen survival: effects of raptors, anthropogenic and landscape features, and hen behavior |
title_full_unstemmed |
Greater Sage-Grouse ( Centrocercusurophasianus) hen survival: effects of raptors, anthropogenic and landscape features, and hen behavior |
title_sort |
greater sage-grouse ( centrocercusurophasianus) hen survival: effects of raptors, anthropogenic and landscape features, and hen behavior |
publisher |
Canadian Science Publishing |
publishDate |
2014 |
url |
http://dx.doi.org/10.1139/cjz-2013-0263 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjz-2013-0263 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjz-2013-0263 |
genre |
Aquila chrysaetos golden eagle |
genre_facet |
Aquila chrysaetos golden eagle |
op_source |
Canadian Journal of Zoology volume 92, issue 4, page 319-330 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjz-2013-0263 |
container_title |
Canadian Journal of Zoology |
container_volume |
92 |
container_issue |
4 |
container_start_page |
319 |
op_container_end_page |
330 |
_version_ |
1810485961990078464 |