Landscape configuration impacts the area of spring space use and survival of female sage-grouse

Landscape composition and configuration are essential factors for species distribution and persistence. Disturbance changes landscapes and can impact individuals' movement and space use based on mobility with tradeoffs between resource acquisition and survival. We evaluated how spring space use and survival of female sage-grouse varied depending on the composition and configuration of disturbances within sagebrush and non-sagebrush dominated habitats, and whether the size of spring neighborhoods affected survival. We created annual spring neighborhoods for individual female sage-grouse using location data from GPS-marked birds. We calculated the proportion, clumpiness, and interspersion and juxtaposition index (IJI) for each cover class within each neighborhood. We used linear mixed and Cox proportional hazards models to examine the interactive effects of composition and configuration on the area of space use and cumulative survival. Spring neighborhood size decreased when the proportion and interspersion of non-sagebrush and sagebrush cover was high but increased when interspersion was low. Neighborhood size decreased when interspersion and proportion of anthropogenic footprint was high but increased when proportion was low. Sage-grouse survival decreased as the proportion of anthropogenic footprint increased, regardless of configuration. Survival decreased when the proportion of juniper cover was high, and interspersion was moderate. Females that spent more time on nest had smaller neighborhood sizes and were more likely to survive during the spring season. However, there was no effect of neighborhood size on survival. Our results indicate that heterogeneity of habitat and disturbance reduces spring neighborhood size and decreases spring survival of female sage-grouse. These results suggest that management actions should focus on reducing pinyon-juniper where interspersion is high and reducing or removing anthropogenic disturbance near sage-grouse breeding areas.

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Publication Details

Journal
Landscape Ecology
Published
2024-10-08
DOI
https://doi.org/10.1007/s10980-024-01974-1
Citations
1
Primary Topic
Rangeland and Wildlife Management
Type
article
Field-Weighted Citation Impact
0.46

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article

Landscape configuration impacts the area of spring space use and survival of female sage-grouse

Jonathan B. Dinkins, Calla R. Hagle, Terrah M. Owens
1 citations
Landscape Ecology
Rangeland and Wildlife Management
0.46
article

Landscape configuration impacts the area of spring space use and survival of female sage-grouse

Jonathan B. Dinkins, Calla R. Hagle, Terrah M. Owens
article en
1 citations

Abstract

Landscape composition and configuration are essential factors for species distribution and persistence. Disturbance changes landscapes and can impact individuals' movement and space use based on mobility with tradeoffs between resource acquisition and survival. We evaluated how spring space use and survival of female sage-grouse varied depending on the composition and configuration of disturbances within sagebrush and non-sagebrush dominated habitats, and whether the size of spring neighborhoods affected survival. We created annual spring neighborhoods for individual female sage-grouse using location data from GPS-marked birds. We calculated the proportion, clumpiness, and interspersion and juxtaposition index (IJI) for each cover class within each neighborhood. We used linear mixed and Cox proportional hazards models to examine the interactive effects of composition and configuration on the area of space use and cumulative survival. Spring neighborhood size decreased when the proportion and interspersion of non-sagebrush and sagebrush cover was high but increased when interspersion was low. Neighborhood size decreased when interspersion and proportion of anthropogenic footprint was high but increased when proportion was low. Sage-grouse survival decreased as the proportion of anthropogenic footprint increased, regardless of configuration. Survival decreased when the proportion of juniper cover was high, and interspersion was moderate. Females that spent more time on nest had smaller neighborhood sizes and were more likely to survive during the spring season. However, there was no effect of neighborhood size on survival. Our results indicate that heterogeneity of habitat and disturbance reduces spring neighborhood size and decreases spring survival of female sage-grouse. These results suggest that management actions should focus on reducing pinyon-juniper where interspersion is high and reducing or removing anthropogenic disturbance near sage-grouse breeding areas.

Landscape EcologyVol. 39(10)
Bureau of Land Management (US), Oregon State University (US)
U.S. Department of Agriculture, Oregon State University, Oregon Watershed Enhancement Board, U.S. Fish and Wildlife Service, National Institute of Food and Agriculture, California Department of Fish and Wildlife, U.S. Bureau of Land Management
Openalex Percentile: Top 29%
Rangeland and Wildlife Management
0.46
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