scholarly journals Linking conservation actions to demography: grass height explains variation in greater sage-grouse nest survival

2014 ◽  
Vol 20 (6) ◽  
pp. 320-325 ◽  
Author(s):  
Kevin E. Doherty ◽  
David E. Naugle ◽  
Jason D. Tack ◽  
Brett L. Walker ◽  
Jon M. Graham ◽  
...  
Keyword(s):  
Nest Survival ◽  
Sage Grouse ◽  
Conservation Actions

Factors Affecting Nest Survival of Greater Sage-Grouse in Northcentral Montana

2007 ◽  
Vol 71 (6) ◽  
pp. 1773-1783 ◽  
Author(s):  
BRENDAN J. MOYNAHAN ◽  
MARK S. LINDBERG ◽  
JAY J. ROTELLA ◽  
JACK WARD THOMAS
Keyword(s):  
Nest Survival ◽  
Sage Grouse ◽  
Factors Affecting

scholarly journals Greater Sage-Grouse nest bowls buffer microclimate in a post-megafire landscape although effects on nest survival are marginal

The Condor ◽  
2021 ◽  
Vol 123 (1) ◽  
Author(s):  
Christopher R Anthony ◽  
Christian A Hagen ◽  
Katie M Dugger ◽  
R Dwayne Elmore
Keyword(s):  
Site Selection ◽  
Nest Site ◽  
Spatial Scales ◽  
Nest Success ◽  
Nest Survival ◽  
Nest Site Selection ◽  
Bare Ground ◽  
Sage Grouse ◽  
Burned Areas ◽  
Visual Obstruction

Abstract Temperature at fine spatial scales is an important driver of nest site selection for many avian species during the breeding season and can influence nest success. Sagebrush (Artemisia spp.) communities have areas with high levels of vegetation heterogeneity and high thermal variation; however, fire removes vegetation that provides protection from predators and extreme environmental conditions. To examine the influence of microclimates on Greater Sage-Grouse (Centrocercus urophasianus) nest site selection and nest success in a fire-affected landscape, we measured black bulb temperature (Tbb) and vegetation attributes (e.g., visual obstruction) at 3 spatial scales (i.e. nest bowl, microsite, and landscape) in unburned and burned areas. Nest bowls exhibited greater buffering of Tbb than both nearby microsites and the broader landscape. Notably, nest bowls were warmer in cold temperatures, and cooler in hot temperatures, than nearby microsites and the broader landscape, regardless of burn stage. Nest survival (NS) was higher for nests in unburned areas compared to nests in burned areas (unburned NS = 0.43, 95% confidence interval [CI]: 0.33–0.54; burned NS = 0.24, 95% CI: 0.10–0.46). The amount of bare ground was negatively associated with NS, but effects diminished as the amount of bare ground reached low levels. Shrub height and visual obstruction were positively associated with NS during the entire study period, whereas minimum Tbb had a weaker effect. Our findings demonstrate that thermoregulatory selection by Greater Sage-Grouse at nest sites had marginal effects on their NS. However, given that increases in vegetation structure (e.g., shrub height) provide thermal refuge and increase NS, vegetation remnants or regeneration in a post-fire landscape could be critical to Greater Sage-Grouse nesting ecology.

scholarly journals Greater sage-grouse nest survival in Northwestern Wyoming

2017 ◽  
Vol 81 (7) ◽  
pp. 1219-1227 ◽  
Author(s):  
Jimmy D. Taylor ◽  
R. Douglas Holt ◽  
Elizabeth K. Orning ◽  
Julie K. Young
Keyword(s):  
Nest Survival ◽  
Sage Grouse

scholarly journals The importance of seasonal resource selection when managing a threatened species: targeting conservation actions within critical habitat designations for the Gunnison sage-grouse

2017 ◽  
Vol 44 (5) ◽  
pp. 407 ◽  
Author(s):  
M. B. Rice ◽  
A. D. Apa ◽  
L. A. Wiechman
Keyword(s):  
Resource Selection ◽  
Radio Telemetry ◽  
Sage Grouse ◽  
Isolated Populations ◽  
Critical Habitat ◽  
Selection Models ◽  
Management Actions ◽  
The Us ◽  
Conservation Actions ◽  
Priority Habitat

Context The ability to identify priority habitat is critical for species of conservation concern. The designation of critical habitat under the US Endangered Species Act 1973 identifies areas occupied by the species that are important for conservation and may need special management or protection. However, relatively few species’ critical habitats designations incorporate habitat suitability models or seasonal specificity, even when that information exists. Gunnison sage-grouse (GUSG) have declined substantially from their historical range and were listed as threatened by the US Fish and Wildlife Service (USFWS) in November 2014. GUSG are distributed into eight isolated populations in Colorado and Utah, and one population, the Gunnison Basin (GB), has been the focus of much research. Aims To provide season-specific resource selection models to improve targeted conservation actions within the designated critical habitat in the GB. Methods We utilised radio-telemetry data from GUSG captured and monitored from 2004 to 2010. We were able to estimate resource selection models for the breeding (1 April–15 July) and summer (16 July–30 September) seasons in the GB using vegetation, topographical and anthropogenic variables. We compared the seasonal models with the existing critical habitat to investigate whether the more specific seasonal models helped identify priority habitat for GUSG. Key results The predictive surface for the breeding model indicated higher use of large areas of sagebrush, whereas the predictive surface for the summer model predicted use of more diverse habitats. The breeding and summer models (combined) matched the current critical habitat designation 68.5% of the time. We found that although the overall habitat was similar between the critical habitat designation and our combined models, the pattern and configuration of the habitat were very different. Conclusions These models highlight areas with favourable environmental variables and spatial juxtaposition to establish priority habitat within the critical habitat designated by USFWS. More seasonally specific resource selection models will assist in identifying specific areas within the critical habitat designation to concentrate habitat improvements, conservation and restoration within the GB. Implications This information can be used to provide insight into the patterns of seasonal habitat selection and can identify priority GUSG habitat to incorporate into critical habitat designation for targeted management actions.

Ecological Factors Influencing Nest Survival of Greater Sage-Grouse in Mono County, California

2009 ◽  
Vol 73 (8) ◽  
pp. 1341-1347 ◽  
Author(s):  
Eric J. Kolada ◽  
Michael L. Casazza ◽  
James S. Sedinger
Keyword(s):  
Nest Survival ◽  
Ecological Factors ◽  
Sage Grouse ◽  
Factors Influencing

scholarly journals A decade of science support in the sagebrush biome (NOTE: to be released late September 2021)

2021 ◽  
Author(s):  
Keyword(s):  
Animal Species ◽  
Current Understanding ◽  
Sage Grouse ◽  
Conservation Actions ◽  
Core Areas ◽  
Working Lands

Working Lands for Wildlife (WLFW) invests in science to proactively target conservation investments and quantify outcomes. This report summarizes more than a decade of WLFW science’s current understanding of identified sagebrush biome threats on western working rangelands and how best to address them through voluntary conservation actions. More than 350 plant and animal species are benefitting from this conservation, notably sage grouse, sagebrush songbirds, and migratory big game populations. 61 peer-reviewed publications are referenced in the report that are helping guide targeted conservation of the sage brush biome, conserve core areas, along with scientifically quantifying outcomes.

scholarly journals Factors affecting seasonal movements of juvenile Greater Sage-Grouse: A reconceptualized nest survival model

The Condor ◽  
2016 ◽  
Vol 118 (1) ◽  
pp. 139-147 ◽  
Author(s):  
Danny Caudill ◽  
Theron M. Terhune ◽  
Brent Bibles ◽  
Terry A. Messmer
Keyword(s):  
Nest Survival ◽  
Survival Model ◽  
Sage Grouse ◽  
Factors Affecting ◽  
Seasonal Movements

scholarly journals Impact of Shiny Cowbird and botfly parasitism on the reproductive success of the globally endangered Yellow CardinalGubernatrix cristata

2014 ◽  
Vol 25 (3) ◽  
pp. 294-305 ◽  
Author(s):  
MARISOL DOMÍNGUEZ ◽  
JUAN CARLOS REBOREDA ◽  
BETTINA MAHLER
Keyword(s):  
Reproductive Success ◽  
Clutch Size ◽  
Brood Parasitism ◽  
Conservation Status ◽  
Nest Survival ◽  
Chick Survival ◽  
Molothrus Bonariensis ◽  
North East ◽  
Conservation Actions ◽  
The Impact

SummaryThe Yellow CardinalGubernatrix cristatais a globally endangered passerine endemic to southern South America. Although the conservation status of this species is alarming, there is no information about factors that affect its reproductive success. We studied the breeding biology of a Yellow Cardinal population in Corrientes province in north-east Argentina and report reproductive parameters, such as timing of breeding, clutch size, hatching success and chick survival and analyse factors influencing nest survival. The breeding season lasted from October to December with most nesting attempts occurring during the second half of November. Re-nesting after nest failure occurred in approximately 35% of pairs but we did not observe re-nesting after successful attempts. Modal clutch size was three eggs and successful nests fledged on average 1.6 chicks. We observed brood parasitism by Shiny CowbirdsMolothrus bonariensisin 33% of the nests. The main cost of brood parasitism was the puncture of cardinal eggs by cowbird females, which very often resulted in nest abandonment. Another factor reducing reproductive success was parasitism by botfliesPhilornissp., which occurred in 22% of the nests and reduced chick survival. We determined daily nest survival rate with MARK software and found that during the egg stage, it decreased with time of breeding and brood parasitism by Shiny Cowbirds. Our results indicate that Shiny Cowbird and botfly parasitism represent a threat for Yellow Cardinals. Conservation actions to protect the remaining populations of Yellow Cardinals should consider the impact of Shiny Cowbird parasitism.

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