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Condition index monitoring supports conservation priorities for the protection of threatened grass-finch populations

Maute, Kim; French, Kris; Legge, Sarah; Astheimer, Lee B; Garnett, Stephen T

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Conservation agencies are often faced with the difficult task of prioritizing what recovery actions receive support. With the number of species under threat of decline growing globally, research that informs conservation priorities is greatly needed. The relative vulnerability of cryptic or nomadic species is often uncertain, because populations are difficult to monitor and local populations often seem stable in the short term. This uncertainty can lead to inaction when populations are in need...[Show more]

dc.contributor.authorMaute, Kim
dc.contributor.authorFrench, Kris
dc.contributor.authorLegge, Sarah
dc.contributor.authorAstheimer, Lee B
dc.contributor.authorGarnett, Stephen T
dc.date.accessioned2018-11-29T22:57:06Z
dc.date.available2018-11-29T22:57:06Z
dc.identifier.issn2051-1434
dc.identifier.urihttp://hdl.handle.net/1885/153742
dc.description.abstractConservation agencies are often faced with the difficult task of prioritizing what recovery actions receive support. With the number of species under threat of decline growing globally, research that informs conservation priorities is greatly needed. The relative vulnerability of cryptic or nomadic species is often uncertain, because populations are difficult to monitor and local populations often seem stable in the short term. This uncertainty can lead to inaction when populations are in need of protection. We tested the feasibility of using differences in condition indices as an indication of population vulnerability to decline for related threatened Australian finch sub-species. The Gouldian finch represents a relatively well-studied endangered species, which has a seasonal and site-specific pattern of condition index variation that differs from the closely related non-declining long-tailed finch. We used Gouldian and long-tailed finch condition variation as a model to compare with lesser studied, threatened star and black-throated finches. We compared body condition (fat and muscle scores), haematocrit and stress levels (corticosterone) among populations, seasons and years to determine whether lesser studied finch populations matched the model of an endangered species or a non-declining species. While vulnerable finch populations often had lower muscle and higher fat and corticosterone concentrations during moult (seasonal pattern similar to Gouldian finches), haematocrit values did not differ among populations in a predictable way. Star and black-throated finch populations, which were predicted to be vulnerable to decline, showed evidence of poor condition during moult, supporting their status as vulnerable. Our findings highlight how measures of condition can provide insight into the relative vulnerability of animal and plant populations to decline and will allow the prioritization of efforts towards the populations most likely to be in jeopardy of extinction.
dc.format.mimetypeapplication/pdf
dc.publisherOxford University Press
dc.sourceConservation Physiology
dc.titleCondition index monitoring supports conservation priorities for the protection of threatened grass-finch populations
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume3
dc.date.issued2015
local.identifier.absfor050200 - ENVIRONMENTAL SCIENCE AND MANAGEMENT
local.identifier.ariespublicationu4279067xPUB1742
local.type.statusPublished Version
local.contributor.affiliationMaute, Kim, University of Wollongong
local.contributor.affiliationFrench, Kris, University of Wollongong
local.contributor.affiliationLegge, Sarah, College of Science, ANU
local.contributor.affiliationAstheimer, Lee B, Deakin University
local.contributor.affiliationGarnett, Stephen T, Charles Darwin University
local.bibliographicCitation.issue1
local.bibliographicCitation.startpagecov025
local.bibliographicCitation.lastpagecov025
local.identifier.doi10.1093/conphys/cov025
local.identifier.absseo960800 - FLORA, FAUNA AND BIODIVERSITY
dc.date.updated2018-11-29T08:15:37Z
local.identifier.scopusID2-s2.0-84983666612
local.identifier.thomsonID000375197700001
dcterms.accessRightsOpen Access
CollectionsANU Research Publications

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