The abundance of Greater Sage-Grouse as a proxy for the abundance of sagebrush-associated songbirds in Wyoming, USA

Surrogate-species concepts are prevalent in animal conservation. Such strategies advocate for conservation by proxy, wherein one species is used to represent other taxa to obtain a conservation objective. The efficacy of such approaches has been rarely assessed empirically, but is predicated on conc...

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Autores principales:	Jason D. Carlisle, Anna D. Chalfoun
Formato:	article
Lenguaje:	EN
Publicado:	Resilience Alliance 2020
Materias:	abundance conservation by proxy greater sage-grouse sagebrush-obligate songbirds surrogate species Plant culture SB1-1110 Environmental sciences GE1-350 Plant ecology QK900-989
Acceso en línea:	https://doaj.org/article/c2d5627733144100af70683b754ede00
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spelling	oai:doaj.org-article:c2d5627733144100af70683b754ede002021-12-02T18:06:21ZThe abundance of Greater Sage-Grouse as a proxy for the abundance of sagebrush-associated songbirds in Wyoming, USA1712-6568https://doaj.org/article/c2d5627733144100af70683b754ede002020-12-01T00:00:00Zhttps://www.ace-eco.org/vol15/iss2/art16/https://doaj.org/toc/1712-6568Surrogate-species concepts are prevalent in animal conservation. Such strategies advocate for conservation by proxy, wherein one species is used to represent other taxa to obtain a conservation objective. The efficacy of such approaches has been rarely assessed empirically, but is predicated on concordance between the surrogate and sympatric taxa in distribution, abundance, and ecological requirements. Our objective was to identify whether the abundance of a high-profile umbrella species (Greater Sage-Grouse, Centrocercus urophasianus, hereafter sage-grouse) was associated with the abundance of six other members of the avian community for which it is presumed to be a surrogate, including three sagebrush-obligate and three sagebrush-associated songbird species. We predicted that sage-grouse abundance would align most closely with the breeding abundance of other sagebrush-obligate birds. We used two different indices of sage-grouse abundance for comparisons: field-collected counts of fecal pellets (primarily indexing abundance in the nonbreeding season) and a spatially explicit index of breeding population size. Neither index of sage-grouse abundance was consistently predictive of co-occurring songbird abundance, with one species more abundant (Horned Lark [Eremophila alpestris]) and one species less abundant (Vesper Sparrow [Pooecetes gramineus]) where sage-grouse pellet counts were higher, and no relationship evident between songbird abundance and the spatially explicit sage-grouse population index. Ours is one of few assessments of the efficacy of sage-grouse as a surrogate species to consider abundance, and not habitat overlap alone. We suggest that the utility of sage-grouse as a surrogate species likely varies across spatial scales. Within the scale examined here (10-15 ha sites), however, indices of sage-grouse abundance were unreliable proxies for the abundance of six declining songbird species.Jason D. CarlisleAnna D. ChalfounResilience Alliancearticleabundanceconservation by proxygreater sage-grousesagebrush-obligatesongbirdssurrogate speciesPlant cultureSB1-1110Environmental sciencesGE1-350Plant ecologyQK900-989ENAvian Conservation and Ecology, Vol 15, Iss 2, p 16 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	abundance conservation by proxy greater sage-grouse sagebrush-obligate songbirds surrogate species Plant culture SB1-1110 Environmental sciences GE1-350 Plant ecology QK900-989
spellingShingle	abundance conservation by proxy greater sage-grouse sagebrush-obligate songbirds surrogate species Plant culture SB1-1110 Environmental sciences GE1-350 Plant ecology QK900-989 Jason D. Carlisle Anna D. Chalfoun The abundance of Greater Sage-Grouse as a proxy for the abundance of sagebrush-associated songbirds in Wyoming, USA
description	Surrogate-species concepts are prevalent in animal conservation. Such strategies advocate for conservation by proxy, wherein one species is used to represent other taxa to obtain a conservation objective. The efficacy of such approaches has been rarely assessed empirically, but is predicated on concordance between the surrogate and sympatric taxa in distribution, abundance, and ecological requirements. Our objective was to identify whether the abundance of a high-profile umbrella species (Greater Sage-Grouse, Centrocercus urophasianus, hereafter sage-grouse) was associated with the abundance of six other members of the avian community for which it is presumed to be a surrogate, including three sagebrush-obligate and three sagebrush-associated songbird species. We predicted that sage-grouse abundance would align most closely with the breeding abundance of other sagebrush-obligate birds. We used two different indices of sage-grouse abundance for comparisons: field-collected counts of fecal pellets (primarily indexing abundance in the nonbreeding season) and a spatially explicit index of breeding population size. Neither index of sage-grouse abundance was consistently predictive of co-occurring songbird abundance, with one species more abundant (Horned Lark [Eremophila alpestris]) and one species less abundant (Vesper Sparrow [Pooecetes gramineus]) where sage-grouse pellet counts were higher, and no relationship evident between songbird abundance and the spatially explicit sage-grouse population index. Ours is one of few assessments of the efficacy of sage-grouse as a surrogate species to consider abundance, and not habitat overlap alone. We suggest that the utility of sage-grouse as a surrogate species likely varies across spatial scales. Within the scale examined here (10-15 ha sites), however, indices of sage-grouse abundance were unreliable proxies for the abundance of six declining songbird species.
format	article
author	Jason D. Carlisle Anna D. Chalfoun
author_facet	Jason D. Carlisle Anna D. Chalfoun
author_sort	Jason D. Carlisle
title	The abundance of Greater Sage-Grouse as a proxy for the abundance of sagebrush-associated songbirds in Wyoming, USA
title_short	The abundance of Greater Sage-Grouse as a proxy for the abundance of sagebrush-associated songbirds in Wyoming, USA
title_full	The abundance of Greater Sage-Grouse as a proxy for the abundance of sagebrush-associated songbirds in Wyoming, USA
title_fullStr	The abundance of Greater Sage-Grouse as a proxy for the abundance of sagebrush-associated songbirds in Wyoming, USA
title_full_unstemmed	The abundance of Greater Sage-Grouse as a proxy for the abundance of sagebrush-associated songbirds in Wyoming, USA
title_sort	abundance of greater sage-grouse as a proxy for the abundance of sagebrush-associated songbirds in wyoming, usa
publisher	Resilience Alliance
publishDate	2020
url	https://doaj.org/article/c2d5627733144100af70683b754ede00
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The abundance of Greater Sage-Grouse as a proxy for the abundance of sagebrush-associated songbirds in Wyoming, USA

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