Effects of competitive pressure and habitat heterogeneity on niche partitioning between Arctic and boreal congeners

Abstract The rapidly changing climate in the Arctic is expected to have a major impact on the foraging ecology of seabirds, owing to changes in the distribution and abundance of their prey but also that of competitors (e.g. southerly species expanding their range into the Arctic). Species can respon...

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Autores principales:	Anne-Sophie Bonnet-Lebrun, Thomas Larsen, Morten Frederiksen, Derren Fox, Fabrice le Bouard, Aude Boutet, Þorkell Lindberg Þórarinsson, Yann Kolbeinsson, Tanguy Deville, Norman Ratcliffe
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/7d097643ac3d4da88249e75f5a797fc2
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spelling	oai:doaj.org-article:7d097643ac3d4da88249e75f5a797fc22021-11-14T12:20:45ZEffects of competitive pressure and habitat heterogeneity on niche partitioning between Arctic and boreal congeners10.1038/s41598-021-01506-w2045-2322https://doaj.org/article/7d097643ac3d4da88249e75f5a797fc22021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-01506-whttps://doaj.org/toc/2045-2322Abstract The rapidly changing climate in the Arctic is expected to have a major impact on the foraging ecology of seabirds, owing to changes in the distribution and abundance of their prey but also that of competitors (e.g. southerly species expanding their range into the Arctic). Species can respond to interspecific competition by segregating along different niche axes. Here, we studied spatial, temporal and habitat segregation between two closely related seabird species: common guillemot Uria aalge (a temperate species) and Brünnich’s guillemot Uria lomvia (a true Arctic species), at two sympatric sites in Iceland that differ in their total population sizes and the availability of marine habitats. We deployed GPS and temperature-depth recorders to describe foraging locations and behaviour of incubating and chick-rearing adults. We found similar evidence of spatial segregation at the two sites (i.e. independent of population sizes), although segregation in environmental space was only evident at the site with a strong habitat gradient. Unexpectedly, temporal (and, to a limited extent, vertical) segregation appeared only at the least populated site. Overall, our results show complex relationships between the levels of inferred competition and that of segregation.Anne-Sophie Bonnet-LebrunThomas LarsenMorten FrederiksenDerren FoxFabrice le BouardAude BoutetÞorkell Lindberg ÞórarinssonYann KolbeinssonTanguy DevilleNorman RatcliffeNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Anne-Sophie Bonnet-Lebrun Thomas Larsen Morten Frederiksen Derren Fox Fabrice le Bouard Aude Boutet Þorkell Lindberg Þórarinsson Yann Kolbeinsson Tanguy Deville Norman Ratcliffe Effects of competitive pressure and habitat heterogeneity on niche partitioning between Arctic and boreal congeners
description	Abstract The rapidly changing climate in the Arctic is expected to have a major impact on the foraging ecology of seabirds, owing to changes in the distribution and abundance of their prey but also that of competitors (e.g. southerly species expanding their range into the Arctic). Species can respond to interspecific competition by segregating along different niche axes. Here, we studied spatial, temporal and habitat segregation between two closely related seabird species: common guillemot Uria aalge (a temperate species) and Brünnich’s guillemot Uria lomvia (a true Arctic species), at two sympatric sites in Iceland that differ in their total population sizes and the availability of marine habitats. We deployed GPS and temperature-depth recorders to describe foraging locations and behaviour of incubating and chick-rearing adults. We found similar evidence of spatial segregation at the two sites (i.e. independent of population sizes), although segregation in environmental space was only evident at the site with a strong habitat gradient. Unexpectedly, temporal (and, to a limited extent, vertical) segregation appeared only at the least populated site. Overall, our results show complex relationships between the levels of inferred competition and that of segregation.
format	article
author	Anne-Sophie Bonnet-Lebrun Thomas Larsen Morten Frederiksen Derren Fox Fabrice le Bouard Aude Boutet Þorkell Lindberg Þórarinsson Yann Kolbeinsson Tanguy Deville Norman Ratcliffe
author_facet	Anne-Sophie Bonnet-Lebrun Thomas Larsen Morten Frederiksen Derren Fox Fabrice le Bouard Aude Boutet Þorkell Lindberg Þórarinsson Yann Kolbeinsson Tanguy Deville Norman Ratcliffe
author_sort	Anne-Sophie Bonnet-Lebrun
title	Effects of competitive pressure and habitat heterogeneity on niche partitioning between Arctic and boreal congeners
title_short	Effects of competitive pressure and habitat heterogeneity on niche partitioning between Arctic and boreal congeners
title_full	Effects of competitive pressure and habitat heterogeneity on niche partitioning between Arctic and boreal congeners
title_fullStr	Effects of competitive pressure and habitat heterogeneity on niche partitioning between Arctic and boreal congeners
title_full_unstemmed	Effects of competitive pressure and habitat heterogeneity on niche partitioning between Arctic and boreal congeners
title_sort	effects of competitive pressure and habitat heterogeneity on niche partitioning between arctic and boreal congeners
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/7d097643ac3d4da88249e75f5a797fc2
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_version_	1718429295844524032

Effects of competitive pressure and habitat heterogeneity on niche partitioning between Arctic and boreal congeners

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