Data from: Foraging behaviour and habitat-use drives niche segregation in sibling seabird species
To mediate competition, similar sympatric species are assumed to utilise different resources, or the same but geographically separated resources. The two giant petrels ( Macronectes spp.) are intriguing in that they are morphologically similar seabirds with overlapping diets and distributions. To be...
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ftzenodo:oai:zenodo.org:3986703 2024-09-15T17:48:13+00:00 Data from: Foraging behaviour and habitat-use drives niche segregation in sibling seabird species Reisinger, Ryan Carpenter-Kling, Tegan Connan, Maëlle Cherel, Yves Pistorius, Pierre 2020-08-15 https://doi.org/10.5061/dryad.31zcrjdj0 unknown Zenodo https://doi.org/10.5281/zenodo.3984174 https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.31zcrjdj0 oai:zenodo.org:3986703 info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode partitioning info:eu-repo/semantics/other 2020 ftzenodo https://doi.org/10.5061/dryad.31zcrjdj010.5281/zenodo.3984174 2024-07-25T12:50:20Z To mediate competition, similar sympatric species are assumed to utilise different resources, or the same but geographically separated resources. The two giant petrels ( Macronectes spp.) are intriguing in that they are morphologically similar seabirds with overlapping diets and distributions. To better understand the mechanisms allowing their co-existence, we investigated intra- and interspecific niche segregation at Marion Island (Southern Indian Ocean), one of the few localities where they breed in sympatry. We used GPS tracks from 94 individuals and remote-sensed environmental data to quantify habitat-use, combined with blood carbon and nitrogen stable isotope ratios from 90 individuals to characterise their foraging habitat and trophic ecology. Females of both species made distant at sea foraging trips and fed at a similar trophic level. However, they used distinct pelagic habitats. In contrast, males of both species mainly foraged on or near land, resulting in significant sexual segregation, but high interspecific habitat and diet overlap. However, some males showed flexible behavioural strategies, also making distant, pelagic foraging trips. Using contemporaneous tracking, environmental and stable isotope data we provide a clear example of how sympatric sibling species can be segregated along different foraging behaviour dimensions. Funding provided by: National Research Foundation: South African National Antarctic Program* Crossref Funder Registry ID: Award Number: SNA93071 Funding provided by: National Research Foundation: South African Network for Coastal and Oceanic Research* Crossref Funder Registry ID: Award Number: 94916 Funding provided by: National Research Foundation: South African National Antarctic Program Crossref Funder Registry ID: Award Number: SNA93071 Other/Unknown Material Antarc* Antarctic Giant Petrels Marion Island Zenodo |
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partitioning Reisinger, Ryan Carpenter-Kling, Tegan Connan, Maëlle Cherel, Yves Pistorius, Pierre Data from: Foraging behaviour and habitat-use drives niche segregation in sibling seabird species |
topic_facet |
partitioning |
description |
To mediate competition, similar sympatric species are assumed to utilise different resources, or the same but geographically separated resources. The two giant petrels ( Macronectes spp.) are intriguing in that they are morphologically similar seabirds with overlapping diets and distributions. To better understand the mechanisms allowing their co-existence, we investigated intra- and interspecific niche segregation at Marion Island (Southern Indian Ocean), one of the few localities where they breed in sympatry. We used GPS tracks from 94 individuals and remote-sensed environmental data to quantify habitat-use, combined with blood carbon and nitrogen stable isotope ratios from 90 individuals to characterise their foraging habitat and trophic ecology. Females of both species made distant at sea foraging trips and fed at a similar trophic level. However, they used distinct pelagic habitats. In contrast, males of both species mainly foraged on or near land, resulting in significant sexual segregation, but high interspecific habitat and diet overlap. However, some males showed flexible behavioural strategies, also making distant, pelagic foraging trips. Using contemporaneous tracking, environmental and stable isotope data we provide a clear example of how sympatric sibling species can be segregated along different foraging behaviour dimensions. Funding provided by: National Research Foundation: South African National Antarctic Program* Crossref Funder Registry ID: Award Number: SNA93071 Funding provided by: National Research Foundation: South African Network for Coastal and Oceanic Research* Crossref Funder Registry ID: Award Number: 94916 Funding provided by: National Research Foundation: South African National Antarctic Program Crossref Funder Registry ID: Award Number: SNA93071 |
format |
Other/Unknown Material |
author |
Reisinger, Ryan Carpenter-Kling, Tegan Connan, Maëlle Cherel, Yves Pistorius, Pierre |
author_facet |
Reisinger, Ryan Carpenter-Kling, Tegan Connan, Maëlle Cherel, Yves Pistorius, Pierre |
author_sort |
Reisinger, Ryan |
title |
Data from: Foraging behaviour and habitat-use drives niche segregation in sibling seabird species |
title_short |
Data from: Foraging behaviour and habitat-use drives niche segregation in sibling seabird species |
title_full |
Data from: Foraging behaviour and habitat-use drives niche segregation in sibling seabird species |
title_fullStr |
Data from: Foraging behaviour and habitat-use drives niche segregation in sibling seabird species |
title_full_unstemmed |
Data from: Foraging behaviour and habitat-use drives niche segregation in sibling seabird species |
title_sort |
data from: foraging behaviour and habitat-use drives niche segregation in sibling seabird species |
publisher |
Zenodo |
publishDate |
2020 |
url |
https://doi.org/10.5061/dryad.31zcrjdj0 |
genre |
Antarc* Antarctic Giant Petrels Marion Island |
genre_facet |
Antarc* Antarctic Giant Petrels Marion Island |
op_relation |
https://doi.org/10.5281/zenodo.3984174 https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.31zcrjdj0 oai:zenodo.org:3986703 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5061/dryad.31zcrjdj010.5281/zenodo.3984174 |
_version_ |
1810289373679190016 |