From trips to bouts to dives: temporal patterns in the diving behaviour of chick-rearing Adelie penguins, East Antarctica
Breeding Adélie penguins forage at sea and return to land to provision their chicks, adjusting their foraging behaviour in response to environmental fluctuations over time. At Béchervaise Island, a nesting site in an East Antarctic population, Adélie penguin diving behaviour remains undocumented. Th...
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Language: | English |
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Inter-Research
2020
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Online Access: | https://eprints.utas.edu.au/35575/ https://eprints.utas.edu.au/35575/1/141561%20-%20From%20trips%20to%20bouts%20to%20dives%20-%20temporal%20patterns%20in%20the%20diving%20behaviour_OA.pdf |
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ftunivtasmania:oai:eprints.utas.edu.au:35575 2023-05-15T13:42:39+02:00 From trips to bouts to dives: temporal patterns in the diving behaviour of chick-rearing Adelie penguins, East Antarctica Riaz, J Bestley, S Wotherspoon, S Freyer, J Emmerson, L 2020 application/pdf https://eprints.utas.edu.au/35575/ https://eprints.utas.edu.au/35575/1/141561%20-%20From%20trips%20to%20bouts%20to%20dives%20-%20temporal%20patterns%20in%20the%20diving%20behaviour_OA.pdf en eng Inter-Research https://eprints.utas.edu.au/35575/1/141561%20-%20From%20trips%20to%20bouts%20to%20dives%20-%20temporal%20patterns%20in%20the%20diving%20behaviour_OA.pdf Riaz, J, Bestley, S orcid:0000-0001-9342-669X , Wotherspoon, S orcid:0000-0002-6947-4445 , Freyer, J and Emmerson, L 2020 , 'From trips to bouts to dives: temporal patterns in the diving behaviour of chick-rearing Adelie penguins, East Antarctica' , Marine Ecology - Progress Series, vol. 654 , pp. 177-194 , doi:10.3354/meps13519 <http://dx.doi.org/10.3354/meps13519>. Southern Ocean Adelie penguins marine predators foraging behaviour biotelemetry diving Article PeerReviewed 2020 ftunivtasmania https://doi.org/10.3354/meps13519 2022-01-03T23:16:34Z Breeding Adélie penguins forage at sea and return to land to provision their chicks, adjusting their foraging behaviour in response to environmental fluctuations over time. At Béchervaise Island, a nesting site in an East Antarctic population, Adélie penguin diving behaviour remains undocumented. This represents a key area of uncertainty in efforts to understand and predict foraging success at this colony. Here, we compile a multi-year telemetry dataset from time-depth recorders deployed from 1992–2004 on 64 birds at Béchervaise Island. We examine diving activity at multiple scales: ranging from foraging trips (n = 125) to dive bouts (n = 3461) to individual dives (n = 84521). We characterise the stage- and sex-specific variation in diving behaviour of chick-rearing Adélie penguins using linear mixed effect models. Total foraging trip effort (trip duration, number of dives, vertical distance travelled and number of wiggles) substantially increased as the chick-rearing period progressed (guard through crèche), consistent with increasing chick provisioning and self-maintenance requirements over time. Foraging activity was predominantly structured in periods of sustained diving bouts, indicating sustained foraging effort over the course of the foraging trip. Diving behaviour (dive-level depth, duration, bottom time and ACPUEd) varied in relation to sex and chick-rearing stage. Dives were performed more frequently during high and low levels of solar light which is likely linked to visual predation strategies or prey activity. Our findings advance our understanding of this population’s foraging behaviour, which is ultimately required to underpin the conservation and management of this breeding colony. Article in Journal/Newspaper Antarc* Antarctic Antarctica Béchervaise Island East Antarctica Southern Ocean University of Tasmania: UTas ePrints Antarctic Southern Ocean East Antarctica Béchervaise Island ENVELOPE(62.818,62.818,-67.591,-67.591) Marine Ecology Progress Series 654 177 194 |
institution |
Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
English |
topic |
Southern Ocean Adelie penguins marine predators foraging behaviour biotelemetry diving |
spellingShingle |
Southern Ocean Adelie penguins marine predators foraging behaviour biotelemetry diving Riaz, J Bestley, S Wotherspoon, S Freyer, J Emmerson, L From trips to bouts to dives: temporal patterns in the diving behaviour of chick-rearing Adelie penguins, East Antarctica |
topic_facet |
Southern Ocean Adelie penguins marine predators foraging behaviour biotelemetry diving |
description |
Breeding Adélie penguins forage at sea and return to land to provision their chicks, adjusting their foraging behaviour in response to environmental fluctuations over time. At Béchervaise Island, a nesting site in an East Antarctic population, Adélie penguin diving behaviour remains undocumented. This represents a key area of uncertainty in efforts to understand and predict foraging success at this colony. Here, we compile a multi-year telemetry dataset from time-depth recorders deployed from 1992–2004 on 64 birds at Béchervaise Island. We examine diving activity at multiple scales: ranging from foraging trips (n = 125) to dive bouts (n = 3461) to individual dives (n = 84521). We characterise the stage- and sex-specific variation in diving behaviour of chick-rearing Adélie penguins using linear mixed effect models. Total foraging trip effort (trip duration, number of dives, vertical distance travelled and number of wiggles) substantially increased as the chick-rearing period progressed (guard through crèche), consistent with increasing chick provisioning and self-maintenance requirements over time. Foraging activity was predominantly structured in periods of sustained diving bouts, indicating sustained foraging effort over the course of the foraging trip. Diving behaviour (dive-level depth, duration, bottom time and ACPUEd) varied in relation to sex and chick-rearing stage. Dives were performed more frequently during high and low levels of solar light which is likely linked to visual predation strategies or prey activity. Our findings advance our understanding of this population’s foraging behaviour, which is ultimately required to underpin the conservation and management of this breeding colony. |
format |
Article in Journal/Newspaper |
author |
Riaz, J Bestley, S Wotherspoon, S Freyer, J Emmerson, L |
author_facet |
Riaz, J Bestley, S Wotherspoon, S Freyer, J Emmerson, L |
author_sort |
Riaz, J |
title |
From trips to bouts to dives: temporal patterns in the diving behaviour of chick-rearing Adelie penguins, East Antarctica |
title_short |
From trips to bouts to dives: temporal patterns in the diving behaviour of chick-rearing Adelie penguins, East Antarctica |
title_full |
From trips to bouts to dives: temporal patterns in the diving behaviour of chick-rearing Adelie penguins, East Antarctica |
title_fullStr |
From trips to bouts to dives: temporal patterns in the diving behaviour of chick-rearing Adelie penguins, East Antarctica |
title_full_unstemmed |
From trips to bouts to dives: temporal patterns in the diving behaviour of chick-rearing Adelie penguins, East Antarctica |
title_sort |
from trips to bouts to dives: temporal patterns in the diving behaviour of chick-rearing adelie penguins, east antarctica |
publisher |
Inter-Research |
publishDate |
2020 |
url |
https://eprints.utas.edu.au/35575/ https://eprints.utas.edu.au/35575/1/141561%20-%20From%20trips%20to%20bouts%20to%20dives%20-%20temporal%20patterns%20in%20the%20diving%20behaviour_OA.pdf |
long_lat |
ENVELOPE(62.818,62.818,-67.591,-67.591) |
geographic |
Antarctic Southern Ocean East Antarctica Béchervaise Island |
geographic_facet |
Antarctic Southern Ocean East Antarctica Béchervaise Island |
genre |
Antarc* Antarctic Antarctica Béchervaise Island East Antarctica Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Béchervaise Island East Antarctica Southern Ocean |
op_relation |
https://eprints.utas.edu.au/35575/1/141561%20-%20From%20trips%20to%20bouts%20to%20dives%20-%20temporal%20patterns%20in%20the%20diving%20behaviour_OA.pdf Riaz, J, Bestley, S orcid:0000-0001-9342-669X , Wotherspoon, S orcid:0000-0002-6947-4445 , Freyer, J and Emmerson, L 2020 , 'From trips to bouts to dives: temporal patterns in the diving behaviour of chick-rearing Adelie penguins, East Antarctica' , Marine Ecology - Progress Series, vol. 654 , pp. 177-194 , doi:10.3354/meps13519 <http://dx.doi.org/10.3354/meps13519>. |
op_doi |
https://doi.org/10.3354/meps13519 |
container_title |
Marine Ecology Progress Series |
container_volume |
654 |
container_start_page |
177 |
op_container_end_page |
194 |
_version_ |
1766170789711708160 |