An integrated population model for greater Sage-Grouse (Centrocercus urophasianus) in the bi-state distinct population segment, California and Nevada, 2003–17

Mathews, Steven R.; Coates, Peter S.; Prochazka, Brian G.; Ricca, Mark A.; Meyerpeter, Mary B.; Espinosa, Shawn P.; Lisius, Sherri; Gardner, Scott; Delehanty, David J.

doi:10.3133/ofr20181177

Cited by 4 publications

(3 citation statements)

References 5 publications

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“…Therefore, we used an informative prior [beta(100, 150)] in our sub-model of juvenile survival (js) based on published rates in the literature for prairie-chickens (Pitman et al, 2006;McNew et al, 2012) for survival of juvenile birds from independence at 35 days of age to recruitment the following spring (March 1). We also used an informative prior for first nest propensity for each stage class, using more conservative values than rates reported in the literature [beta(97, 5) for adults and beta (90,12) for yearlings] due to concerns about the potential for missing first nests that failed early during the laying period (Taylor et al, 2012;Mathews et al, 2018). We assumed nest propensity was constant among years.…”

Section: Fecunditymentioning

confidence: 99%

Evaluating the Cumulative Effects of Livestock Grazing on Wildlife With an Integrated Population Model

Milligan

McNew

2022

Front. Ecol. Evol.

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Livestock grazing can shape temperate grassland ecosystems, with both positive and negative effects on wildlife documented depending on a variety of grazing and site factors. Historically, research investigating the impacts of livestock grazing on wildlife has been limited by a narrow focus on simple “grazed” vs. “ungrazed” treatments or examining how grazing affects only a single vital rate in isolation. To overcome these limitations, we used a two-stage class, female-based integrated population model (IPM) to examine whether three grazing management regimes (season-long, rest-rotation, and summer rotation) differentially impacted population growth rates of sharp-tailed grouse (Tympanachus phasianellus) in eastern Montana and western North Dakota. We estimated 14 vital rates related to survival and fecundity and examined whether subtle cumulative effects of livestock grazing were present but not detected in prior analyses focused on single vital rates. While the management regimes did not differentially impact survival or fecundity of female grouse in our study system, we found evidence for significant cumulative impacts of grazing regime on population growth rates that were only apparent when all vital rates were evaluated concurrently. Population growth rates were higher in areas managed with season-long livestock grazing. The IPM framework encourages comprehensive investigations into the influence of covariates on critical components of species life histories and can assist in guiding management decisions in a world of limited resources. This integrated approach allowed us to more efficiently use multiple data types to provide a more complete picture of the effects of management on an important indicator species.

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Section: Fecunditymentioning

confidence: 99%

Evaluating the Cumulative Effects of Livestock Grazing on Wildlife With an Integrated Population Model

Milligan

McNew

2022

Front. Ecol. Evol.

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“…Acclimation was meant to prevent immediate, full-brood abandonment and promote brood cohesion during the stressful and disruptive process of translocation (Dickens et al 2009). We replicated our protocol on the eastern (North Dakota) and western (California) fringes of prevailing sage-grouse range where different translocation methods have been implemented recently to combat range contraction (Mathews et al 2018, Lazenby et al 2021. Documenting and standardizing protocols across multiple sites encourages rigorous evaluation of the success or failure of methods and any associated innovations (Toepfer and Eng 1990).…”

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confidence: 99%

Field Methods for Translocating Female Greater Sage‐Grouse (Centrocercus urophasianus) with their Broods

Meyerpeter

Lazenby

Coates

et al. 2021

Wildlife Society Bulletin

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Greater sage-grouse (Centrocercus urophasianus) have experienced considerable range contraction and reduced abundance in response to habitat loss and degradation. Translocation is a conservation action that is often used to reintroduce extirpated populations or augment existing small populations. Translocations have had limited success in restoring viable populations of sage-grouse; a lack of success is attributed to longdistance post-release movements away from release sites, reduced survival, and lack of reproductive success of translocated individuals. Translocating female sage-grouse with their chicks (brood translocation) is a technique aimed at promoting breeding area fidelity and reproduction and may be beneficial to population restoration efforts. Furthermore, the ability to capture, relocate, and release individuals while minimizing translocation-induced loss increases the overall probability of restoration success. Accordingly, we developed a protocol to translocate female sage-grouse and their broods simultaneously, using a delayed-release system that included a custom release box and acclimation pen. We tested our protocol across 2 separate restoration projects in North Dakota and California during 2017-2019 with a total of 38 translocated females and 196 chicks. We successfully released 174/196 chicks (88.8%) from 32/38 (84.2%) broods. Our protocol builds on existing translocation methods used to translocate sage-grouse and will likely prove to be a critical technique in restoring sage-grouse populations.

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“…Mathews, S.R., Coates, P.S., Prochazka, B.G., Ricca, M.A., Meyerpeter, M.B., Espinosa, S.P., Lisius, S., Gardner, S.C., and Delehanty, D.J., 2018, An integrated population model for greater sage-grouse (Centrocercus urophasianus) in the Bi-State Distinct Population Segment, California and Nevada, 2003-17: U.S. Geological Survey Open-File Report 2018-1177, 89 p., https://doi.org/10.3133/ofr20181177. O'Neil, S.T., Coates, P.S., Brussee, B.E., Jackson, P.J., Howe, K.B., Moser, A.M., Foster, L.J., and Delehanty, D.J., 2018, Broadscale occurrence of a subsidized avian predator-Reducing impacts of ravens on sage-grouse and other sensitive prey: Journal of AppliedEcology, v. 55, no.…”

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confidence: 99%

U.S. Geological Survey energy and wildlife research annual report for 2019

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An integrated population model for greater Sage-Grouse (Centrocercus urophasianus) in the bi-state distinct population segment, California and Nevada, 2003–17

Cited by 4 publications

References 5 publications

Evaluating the Cumulative Effects of Livestock Grazing on Wildlife With an Integrated Population Model

Evaluating the Cumulative Effects of Livestock Grazing on Wildlife With an Integrated Population Model

Field Methods for Translocating Female Greater Sage‐Grouse (Centrocercus urophasianus) with their Broods

U.S. Geological Survey energy and wildlife research annual report for 2019

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