Horizontal-vertical movement relationships: Adélie penguins forage continuously throughout provisioning trips
Abstract Background Diving 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 optima...
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Springer Science and Business Media LLC
2021
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Online Access: | http://dx.doi.org/10.1186/s40462-021-00280-8 https://link.springer.com/content/pdf/10.1186/s40462-021-00280-8.pdf https://link.springer.com/article/10.1186/s40462-021-00280-8/fulltext.html |
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crspringernat:10.1186/s40462-021-00280-8 2023-05-15T15:41:12+02:00 Horizontal-vertical movement relationships: Adélie penguins forage continuously throughout provisioning trips Riaz, Javed Bestley, Sophie Wotherspoon, Simon Emmerson, Louise australian research council discovery early career research award australian antarctic division 2021 http://dx.doi.org/10.1186/s40462-021-00280-8 https://link.springer.com/content/pdf/10.1186/s40462-021-00280-8.pdf https://link.springer.com/article/10.1186/s40462-021-00280-8/fulltext.html en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Movement Ecology volume 9, issue 1 ISSN 2051-3933 Ecology, Evolution, Behavior and Systematics journal-article 2021 crspringernat https://doi.org/10.1186/s40462-021-00280-8 2022-01-04T14:30:21Z Abstract Background Diving 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. Methods Here, 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. Results Penguins 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. Conclusions Our 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 Southern Ocean Springer Nature (via Crossref) Béchervaise Island ENVELOPE(62.818,62.818,-67.591,-67.591) Southern Ocean Movement Ecology 9 1 |
institution |
Open Polar |
collection |
Springer Nature (via Crossref) |
op_collection_id |
crspringernat |
language |
English |
topic |
Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Ecology, Evolution, Behavior and Systematics Riaz, Javed Bestley, Sophie Wotherspoon, Simon Emmerson, Louise Horizontal-vertical movement relationships: Adélie penguins forage continuously throughout provisioning trips |
topic_facet |
Ecology, Evolution, Behavior and Systematics |
description |
Abstract Background Diving 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. Methods Here, 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. Results Penguins 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. Conclusions Our 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. |
author2 |
australian research council discovery early career research award australian antarctic division |
format |
Article in Journal/Newspaper |
author |
Riaz, Javed Bestley, Sophie Wotherspoon, Simon Emmerson, Louise |
author_facet |
Riaz, Javed Bestley, Sophie Wotherspoon, Simon Emmerson, Louise |
author_sort |
Riaz, Javed |
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 |
Springer Science and Business Media LLC |
publishDate |
2021 |
url |
http://dx.doi.org/10.1186/s40462-021-00280-8 https://link.springer.com/content/pdf/10.1186/s40462-021-00280-8.pdf https://link.springer.com/article/10.1186/s40462-021-00280-8/fulltext.html |
long_lat |
ENVELOPE(62.818,62.818,-67.591,-67.591) |
geographic |
Béchervaise Island Southern Ocean |
geographic_facet |
Béchervaise Island Southern Ocean |
genre |
Béchervaise Island Southern Ocean |
genre_facet |
Béchervaise Island Southern Ocean |
op_source |
Movement Ecology volume 9, issue 1 ISSN 2051-3933 |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1186/s40462-021-00280-8 |
container_title |
Movement Ecology |
container_volume |
9 |
container_issue |
1 |
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1766374087471398912 |