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dc.contributor.authorBuelow, Christina A
dc.contributor.authorReside, April E
dc.contributor.authorBaker, Ronald
dc.contributor.authorSheaves, Marcus
dc.date.accessioned2019-11-06T04:40:19Z
dc.date.available2019-11-06T04:40:19Z
dc.date.issued2018
dc.identifier.issn1932-6203
dc.identifier.doi10.1371/journal.pone.0206145
dc.identifier.urihttp://hdl.handle.net/10072/388930
dc.description.abstractEnvironmental heterogeneity can foster opportunistic foraging by mobile species, resulting in generalized resource and habitat use. Determining species’ food web roles is important to fully understand how ecosystems function, and stable isotopes can provide insight into the foraging ecology of bird assemblages. We investigated flexibility of food choice in mangrove bird assemblages of northeast Australia by determining whether species’ carbon and nitrogen isotopic values corresponded to foraging group classification described in the literature, such as groups of species that are omnivorous or insectivorous. Subsequently, we evaluated foraging group isotopic niche size, overlap, degree of individual specialisation, and the probable proportions of coastal resources that contribute to their collective diets. We found that mangrove birds are more opportunistic when foraging than expected from previous diet studies. Importantly, relationships between the dietary diversity of species within a foraging group and isotopic niche size are spatially inconsistent, making inferences regarding foraging strategies difficult. However, quantifying individual specialisation and determining the probable relative contributions of coastal resources to the collective diet of isotope-based foraging groups can help to differentiate between specialised and generalised foraging strategies. We suggest that flexibility in mangrove bird foraging strategy occurs in response to environmental heterogeneity. A complementary approach that combines isotopic analysis with other dietary information (collated from previous diet studies using visual observation or gut content analyses) has provided useful insight to how bird assemblages partition resources in spatiotemporally heterogeneous environments.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherPublic Library Science
dc.relation.ispartofpagefrome0206145:1
dc.relation.ispartofpagetoe0206145:23
dc.relation.ispartofissue11
dc.relation.ispartofjournalPLoS ONE
dc.relation.ispartofvolume13
dc.subject.fieldofresearchEcology
dc.subject.fieldofresearchMarine and estuarine ecology (incl. marine ichthyology)
dc.subject.fieldofresearchcode3103
dc.subject.fieldofresearchcode310305
dc.subject.keywordsScience & Technology
dc.subject.keywordsMultidisciplinary Sciences
dc.subject.keywordsScience & Technology - Other Topics
dc.subject.keywordsSOUTHERN GREAT-PLAINS
dc.subject.keywordsINDIVIDUAL SPECIALIZATION
dc.titleStable isotopes reveal opportunistic foraging in a spatiotemporally heterogeneous environment: Bird assemblages in mangrove forests
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationBuelow, CA; Reside, AE; Baker, R; Sheaves, M, Stable isotopes reveal opportunistic foraging in a spatiotemporally heterogeneous environment: Bird assemblages in mangrove forests, PLoS ONE, 2018, 13 (11), e0206145:1-e0206145:23
dcterms.dateAccepted2018-10-08
dcterms.licensehttp://creativecommons.org/licenses/by/4.0/
dc.date.updated2019-11-06T02:53:12Z
dc.description.versionVersion of Record (VoR)
gro.rights.copyright© 2018 Buelow et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
gro.hasfulltextFull Text
gro.griffith.authorBuelow, Christina A.


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