Central place foraging drives niche partitioning in seabirds

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dc.contributor.authorJessopp, Mark
dc.contributor.authorArneill, Gavin E.
dc.contributor.authorNykänen, Milaja
dc.contributor.authorBennison, Ashley
dc.contributor.authorRogan, Emer
dc.contributor.funderDepartment of the Environment, Climate and Communicationsen
dc.contributor.funderDepartment for Culture, Heritage and the Gaeltacht, Irelanden
dc.date.accessioned2021-11-16T09:55:37Z
dc.date.available2021-11-16T09:55:37Z
dc.date.issued2020-07-21
dc.date.updated2021-11-16T09:34:13Z
dc.description.abstractWhen species coexist, it is expected that they will reduce competition through niche partitioning or spatial segregation. We investigated the importance of niche partitioning versus spatial segregation across a seabird community where food and foraging constraints vary seasonally. Spatial clustering of seabird density in the western Irish Sea occurred in both seasons, with hotspots of seabird occurrence significantly higher in summer (Moran's I: 0.29) than winter (Moran's I: 0.19). A positive correlation between seabird density and feeding guild richness suggested a role for niche partitioning in reducing competition. This correlation was significantly stronger in summer than winter (Z-test, p < 0.05), suggesting that when foraging range is constrained during the breeding season, interspecific competition is reduced through increased niche partitioning. Reduced spatial clustering and weaker correlations between density and feeding guild richness in winter suggests that spatial segregation plays a greater role in reducing interspecific competition outside the breeding season. This study demonstrates the relative importance of niche partitioning and spatial segregation, highlighting niche partitioning as a response to constraints on foraging range during the breeding season.en
dc.description.sponsorshipDepartment of the Environment, Climate and Communications and Department for Culture, Heritage and the Gaeltacht, Ireland (ObSERVE Programme)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationJessopp, M., Arneill, G. E., Nykänen, M., Bennison, A. and Rogan, E. (2020) 'Central place foraging drives niche partitioning in seabirds', Oikos, 129(11), pp. 1704-1713. doi: 10.1111/oik.07509en
dc.identifier.doi10.1111/oik.07509en
dc.identifier.eissn1600-0706
dc.identifier.endpage1713en
dc.identifier.issn0030-1299
dc.identifier.issued11en
dc.identifier.journaltitleOikosen
dc.identifier.startpage1704en
dc.identifier.urihttps://hdl.handle.net/10468/12219
dc.identifier.volume129en
dc.language.isoenen
dc.publisherJohn Wiley & Sons, Inc.en
dc.rights© 2020, Nordic Society Oikos. Published by John Wiley & Sons Ltd. This is the peer reviewed version of the following item: Jessopp, M., Arneill, G. E., Nykänen, M., Bennison, A. and Rogan, E. (2020) 'Central place foraging drives niche partitioning in seabirds', Oikos, 129(11), pp. 1704-1713, doi: 10.1111/oik.07509, which has been published in final form at: https://doi.org/10.1111/oik.07509. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.en
dc.subjectFeeding ecologyen
dc.subjectPelagic seabirden
dc.subjectShelf seaen
dc.subjectSegregationen
dc.subjectPopulationen
dc.subjectCompetitionen
dc.subjectPatternsen
dc.subjectAuksen
dc.subjectGyreen
dc.subjectTemperatureen
dc.titleCentral place foraging drives niche partitioning in seabirdsen
dc.typeArticle (peer-reviewed)en
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