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Habitat preferences of Phoebetria albatrosses in sympatry and allopatry

Published version
Peer-reviewed

Repository DOI


Change log

Authors

Bentley, LK 
Phillips, RA 
Carpenter-Kling, T 
Crawford, RJM 
Cuthbert, RJ 

Abstract

jats:titleAbstract</jats:title>jats:secjats:titleAim</jats:title>jats:pCompetition is often proposed to drive niche segregation along multiple axes in speciose communities. Understanding spatial partitioning of foraging areas is particularly important in species that are constrained to a central place. We present a natural experiment examining variation in habitat preferences of congeneric Southern Ocean predators in sympatry and allopatry. Our aim was to ascertain consistency of habitat preferences within species, and to test whether preferences changed in the presence of the congener.</jats:p></jats:sec>jats:secjats:titleLocation</jats:title>jats:pSouthern Hemisphere.</jats:p></jats:sec>jats:secjats:titleTaxon</jats:title>jats:pMultiple colonies of both species within the genus jats:italicPhoebetria</jats:italic> (sooty albatrosses).</jats:p></jats:sec>jats:secjats:titleMethods</jats:title>jats:pThe two jats:italicPhoebetria</jats:italic> albatrosses breed on islands located from ~37–55°S – sooty albatrosses (jats:italicP. fusca</jats:italic>) in the north and light‐mantled albatrosses (jats:italicP. palpebrata</jats:italic>) in the south – with sympatric overlap at locations ~46–49°S. We analysed GPS and PTT tracks from 87 individuals and multiple remotely sensed environmental variables using GAMs, to determine and compare the key factors influencing habitat preference for each species at each breeding colony.</jats:p></jats:sec>jats:secjats:titleResults</jats:title>jats:pWhile foraging habitat preferences are consistent in light‐mantled albatrosses, there is divergence of preferences in sooty albatrosses depending on whether they are in sympatry with their congener or in allopatry.</jats:p></jats:sec>jats:secjats:titleMain Conclusions</jats:title>jats:pThis study represents the most comprehensive work on this genus to date and highlights how habitat preferences and behavioural plasticity may influence species distributions under different competitive conditions.</jats:p></jats:sec>

Description

Publication status: Published


Funder: Natural Environment Research Council; doi: http://dx.doi.org/10.13039/501100000270


Funder: Gates Cambridge Trust; doi: http://dx.doi.org/10.13039/501100005370


Funder: Prince Albert II of Monaco Foundation; doi: http://dx.doi.org/10.13039/501100011592


Funder: Institut Polaire Français Paul Emile Victor; doi: http://dx.doi.org/10.13039/501100004796

Keywords

41 Environmental Sciences, 3109 Zoology, 3103 Ecology, 31 Biological Sciences

Journal Title

Journal of Biogeography

Conference Name

Journal ISSN

0305-0270
1365-2699

Volume Title

Publisher

Wiley
Sponsorship
South African National Antarctic Programme (SNA093071)