Rasters and Tables for Selection and Survival of Greater Sage-grouse Nests and Broods in the Bi-State Distinct Population Segment of California and Nevada
Dates
Publication Date
2024-06-13
Start Date
2003
End Date
2019
Citation
Coates, P.S., Milligan, M.C., Brussee, B.E., O'Neil, S.T., and Chenaille, M.P., 2024, Rasters and tables for selection and survival of Greater Sage-grouse nests and broods in the Bi-State Distinct Population Segment of California and Nevada: U.S. Geological Survey data release, https://doi.org/10.5066/P95HTJG8.
Summary
We demonstrate a quantitative approach to differentiate source and sink habitats at large spatial scales using the greater sage-grouse (Centrocercus urophasianus; hereafter, sage-grouse), an indicator species for sagebrush ecosystems, as a case-study. We evaluated both selection and survival across multiple reproductive life stages (nesting, brood-rearing) in the Bi-State Distinct Population Segment (DPS), a genetically distinct and geographically isolated population of sage-grouse on the southwestern edge of the species’ range. Our approach allowed us to identify both mismatches between selection and survival and trade-offs between life stages. These findings suggest competing resource demands across time, with predation risk being [...]
Summary
We demonstrate a quantitative approach to differentiate source and sink habitats at large spatial scales using the greater sage-grouse (Centrocercus urophasianus; hereafter, sage-grouse), an indicator species for sagebrush ecosystems, as a case-study. We evaluated both selection and survival across multiple reproductive life stages (nesting, brood-rearing) in the Bi-State Distinct Population Segment (DPS), a genetically distinct and geographically isolated population of sage-grouse on the southwestern edge of the species’ range. Our approach allowed us to identify both mismatches between selection and survival and trade-offs between life stages. These findings suggest competing resource demands across time, with predation risk being a dominant factor for nests and during early brood-rearing when chicks are smaller and flightless, whereas access to forage resources becomes more important during late brood-rearing when resources become increasingly limited.
These data consist of both continuous indices and categorical rasters representing selection and survival for the nesting and brooding seasons. The selection and survival categories were then intersected again to creat source-sink classes. Seasonal results were also combined to produce composite rasters which represent selection, survival, and source-sinks across the entire reproductive life cycle of sage-grouse.
These data support the following publication:
Coates, P.S., Milligan, M.C., Prochazka, B.G., Brussee, B.E., O’Neil, S.T., Lundblad, C.G., Webster, S.C., Weise, C.L., Mathews, S.R., Chenaille, M.P., Aldridge, C.L., O’Donnell, M.S., Espinosa, S.P., Sturgill, A.C., Doherty, K.E., Tull, J.C., Miller, K., Wiechman, L.A., Abele, S., Boone, J., Stone, H., and Casazza, M.L., 2024, Status of greater sage-grouse in the Bi-State Distinct Population Segment—An evaluation of population trends, habitat selection, and efficacy of conservation actions: U.S. Geological Survey Open-File Report 2024–1030, 74 p., https://doi.org/10.3133/ofr20241030.
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Related External Resources
Type: Related Primary Publication
Status of greater sage-grouse in the Bi-State Distinct Population Segment—An evaluation of population trends, habitat selection, and efficacy of conservation actions
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Purpose
Management decisions often focus on habitat selection of marked individuals without considering the contribution to performance in selected habitats. Because habitat selection is not always adaptive, understanding the link between habitat selection and demographic performance is critical to management decisions. Mapping both selection and demographic performance for species of conservation concern can help guide population-scale conservation efforts.
