Horizontal-vertical movement relationships: Adélie penguins forage continuously throughout provisioning trips
BackgroundDiving marine predators forage in a three-dimensional environment, adjusting their horizontal and vertical movement behaviour in response to environmental conditions and the spatial distribution of prey. Expectations regarding horizontal-vertical movements are derived from optimal foraging...
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Language: | English |
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BioMed Central Ltd.
2021
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Online Access: | https://eprints.utas.edu.au/40746/ https://eprints.utas.edu.au/40746/1/146959%20-%20Horizontal%26-8209-vertical%20movement%20relationships.pdf |
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ftunivtasmania:oai:eprints.utas.edu.au:40746 2023-05-15T15:41:12+02:00 Horizontal-vertical movement relationships: Adélie penguins forage continuously throughout provisioning trips Riaz, J Bestley, S Wotherspoon, S Emmerson, L 2021 application/pdf https://eprints.utas.edu.au/40746/ https://eprints.utas.edu.au/40746/1/146959%20-%20Horizontal%26-8209-vertical%20movement%20relationships.pdf en eng BioMed Central Ltd. https://eprints.utas.edu.au/40746/1/146959%20-%20Horizontal%26-8209-vertical%20movement%20relationships.pdf Riaz, J, Bestley, S orcid:0000-0001-9342-669X , Wotherspoon, S orcid:0000-0002-6947-4445 and Emmerson, L 2021 , 'Horizontal-vertical movement relationships: Adélie penguins forage continuously throughout provisioning trips' , Movement Ecology, vol. 9, no. 1 , p. 1015 , doi:10.1186/s40462-021-00280-8 <http://dx.doi.org/10.1186/s40462-021-00280-8>. foraging behaviour Pygoscelis adeliae area-restricted search horizontal movement dive behaviour habitat use Article PeerReviewed 2021 ftunivtasmania https://doi.org/10.1186/s40462-021-00280-8 2022-01-24T23:18:28Z BackgroundDiving marine predators forage in a three-dimensional environment, adjusting their horizontal and vertical movement behaviour in response to environmental conditions and the spatial distribution of prey. Expectations regarding horizontal-vertical movements are derived from optimal foraging theories, however, inconsistent empirical findings across a range of taxa suggests these behavioural assumptions are not universally applicable.MethodsHere, we examined how changes in horizontal movement trajectories corresponded with diving behaviour and marine environmental conditions for a ubiquitous Southern Ocean predator, the Adélie penguin. Integrating extensive telemetry-based movement and environmental datasets for chick-rearing Adélie penguins at Béchervaise Island, we tested the relationships between horizontal move persistence (continuous scale indicating low [‘resident’] to high [‘directed’] movement autocorrelation), vertical dive effort and environmental variables.ResultsPenguins dived continuously over the course of their foraging trips and lower horizontal move persistence corresponded with less intense foraging activity, likely indicative of resting behaviour. This challenges the traditional interpretation of horizontal-vertical movement relationships based on optimal foraging models, which assumes increased residency within an area translates to increased foraging activity. Movement was also influenced by different environmental conditions during the two stages of chick-rearing: guard and crèche. These differences highlight the strong seasonality of foraging habitat for chick-rearing Adélie penguins at Béchervaise Island.ConclusionsOur findings advance our understanding of the foraging behaviour for this marine predator and demonstrates the importance of integrating spatial location and behavioural data before inferring habitat use. Article in Journal/Newspaper Béchervaise Island Pygoscelis adeliae Southern Ocean University of Tasmania: UTas ePrints Southern Ocean Béchervaise Island ENVELOPE(62.818,62.818,-67.591,-67.591) Movement Ecology 9 1 |
institution |
Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
English |
topic |
foraging behaviour Pygoscelis adeliae area-restricted search horizontal movement dive behaviour habitat use |
spellingShingle |
foraging behaviour Pygoscelis adeliae area-restricted search horizontal movement dive behaviour habitat use Riaz, J Bestley, S Wotherspoon, S Emmerson, L Horizontal-vertical movement relationships: Adélie penguins forage continuously throughout provisioning trips |
topic_facet |
foraging behaviour Pygoscelis adeliae area-restricted search horizontal movement dive behaviour habitat use |
description |
BackgroundDiving marine predators forage in a three-dimensional environment, adjusting their horizontal and vertical movement behaviour in response to environmental conditions and the spatial distribution of prey. Expectations regarding horizontal-vertical movements are derived from optimal foraging theories, however, inconsistent empirical findings across a range of taxa suggests these behavioural assumptions are not universally applicable.MethodsHere, we examined how changes in horizontal movement trajectories corresponded with diving behaviour and marine environmental conditions for a ubiquitous Southern Ocean predator, the Adélie penguin. Integrating extensive telemetry-based movement and environmental datasets for chick-rearing Adélie penguins at Béchervaise Island, we tested the relationships between horizontal move persistence (continuous scale indicating low [‘resident’] to high [‘directed’] movement autocorrelation), vertical dive effort and environmental variables.ResultsPenguins dived continuously over the course of their foraging trips and lower horizontal move persistence corresponded with less intense foraging activity, likely indicative of resting behaviour. This challenges the traditional interpretation of horizontal-vertical movement relationships based on optimal foraging models, which assumes increased residency within an area translates to increased foraging activity. Movement was also influenced by different environmental conditions during the two stages of chick-rearing: guard and crèche. These differences highlight the strong seasonality of foraging habitat for chick-rearing Adélie penguins at Béchervaise Island.ConclusionsOur findings advance our understanding of the foraging behaviour for this marine predator and demonstrates the importance of integrating spatial location and behavioural data before inferring habitat use. |
format |
Article in Journal/Newspaper |
author |
Riaz, J Bestley, S Wotherspoon, S Emmerson, L |
author_facet |
Riaz, J Bestley, S Wotherspoon, S Emmerson, L |
author_sort |
Riaz, J |
title |
Horizontal-vertical movement relationships: Adélie penguins forage continuously throughout provisioning trips |
title_short |
Horizontal-vertical movement relationships: Adélie penguins forage continuously throughout provisioning trips |
title_full |
Horizontal-vertical movement relationships: Adélie penguins forage continuously throughout provisioning trips |
title_fullStr |
Horizontal-vertical movement relationships: Adélie penguins forage continuously throughout provisioning trips |
title_full_unstemmed |
Horizontal-vertical movement relationships: Adélie penguins forage continuously throughout provisioning trips |
title_sort |
horizontal-vertical movement relationships: adélie penguins forage continuously throughout provisioning trips |
publisher |
BioMed Central Ltd. |
publishDate |
2021 |
url |
https://eprints.utas.edu.au/40746/ https://eprints.utas.edu.au/40746/1/146959%20-%20Horizontal%26-8209-vertical%20movement%20relationships.pdf |
long_lat |
ENVELOPE(62.818,62.818,-67.591,-67.591) |
geographic |
Southern Ocean Béchervaise Island |
geographic_facet |
Southern Ocean Béchervaise Island |
genre |
Béchervaise Island Pygoscelis adeliae Southern Ocean |
genre_facet |
Béchervaise Island Pygoscelis adeliae Southern Ocean |
op_relation |
https://eprints.utas.edu.au/40746/1/146959%20-%20Horizontal%26-8209-vertical%20movement%20relationships.pdf Riaz, J, Bestley, S orcid:0000-0001-9342-669X , Wotherspoon, S orcid:0000-0002-6947-4445 and Emmerson, L 2021 , 'Horizontal-vertical movement relationships: Adélie penguins forage continuously throughout provisioning trips' , Movement Ecology, vol. 9, no. 1 , p. 1015 , doi:10.1186/s40462-021-00280-8 <http://dx.doi.org/10.1186/s40462-021-00280-8>. |
op_doi |
https://doi.org/10.1186/s40462-021-00280-8 |
container_title |
Movement Ecology |
container_volume |
9 |
container_issue |
1 |
_version_ |
1766374088200159232 |