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Reference: Black, C, Raya Rey, A and Hart, T et al., (2017). Peeking into the bleak midwinter- investigating non-breeding strategies of seabirds using a camera network. Auk, 134 (3), 520-529.Citable link to this page:

 

Peeking into the bleak midwinter- investigating non-breeding strategies of seabirds using a camera network

Abstract: When monitoring species with extensive ranges in harsh climates, comprehensive studies across a species' range are both logistically and technically challenging and therefore rare. Such scarcity in data collection is particularly true in the polar regions where sea ice and weather constraints prevent widespread access to sites for much of the year, specifically during winter. Penguins (Spheniscidae) show large variations in winter strategies with many species migrating long distances while others are distinctly sedentary, remaining at the colony year-round. However, in some species, their attendance at the breeding site during the nonbreeding winter period depends greatly on the colony location and environmental factors. Here we aim to examine fluctuations in winter attendance at the breeding site in Gentoo Penguins (Pygoscelis papua) along a latitudinal gradient of 7 sites, ranging from Martillo Island, a colony in Argentina, to Petermann Island, a colony located toward the southern edge of the species' range on the Western Antarctic Peninsula. We use an established network of cameras to observe winter populations of penguins across a large latitudinal gradient. This study provides the first evidence of across-year variation in Gentoo Penguin nonbreeding attendance at the breeding site. We found that both temporal and spatial factors drive winter attendance in this species with distinct patterns between years and colony locations, particularly at the edges of its range. Additionally, environmental and temporal factors, including sea ice extent directly offshore and photoperiod, appear to dictate Gentoo Penguin winter attendance across their range. As Gentoo Penguins are neither sedentary nor migratory during the nonbreeding period, understanding patterns in winter site occupation across time and space provides insight into half of the species' annual cycle and has important implications in the face of changes in climate, direct human disturbance, and fisheries activities.

Publication status:PublishedPeer Review status:Peer reviewedVersion:Publisher's versionDate of acceptance:09 January 2017 Funder: Darwin Initiative Challenge Fund   Funder: Darwin Plus   Funder: Quark Expeditions Ltd   Notes:Copyright © 2017 American Ornithological Society.

Bibliographic Details

Publisher: American Ornithological Society

Publisher Website: http://www.americanornithology.org/

Journal: Auksee more from them

Publication Website: http://www.bioone.org/loi/tauk

Volume: 134

Issue: 3

Extent: 520-529

Issue Date: 19 April 2017

pages:520-529Identifiers

Doi: https://doi.org/10.1642/AUK-16-69.1

Issn: 0004-8038

Eissn: 1938-4254

Uuid: uuid:07002bd1-05a2-4f13-9bba-decaf388aa21

Urn: uri:07002bd1-05a2-4f13-9bba-decaf388aa21

Pubs-id: pubs:691312 Item Description

Type: journal-article;

Version: Publisher's versionKeywords: Antarctic Gentoo Penguin phenology polar biology Pygoscelis papua

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Autor: Black, C - Oxford, MPLS, Zoology - - - Raya Rey, A - - - Hart, T - Oxford, MPLS, Zoology - - - - Bibliographic Details Publisher:

Fuente: https://ora.ox.ac.uk/objects/uuid:07002bd1-05a2-4f13-9bba-decaf388aa21



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