Data_Sheet_1_Using Predicted Patterns of 3D Prey Distribution to Map King Penguin Foraging Habitat.docx
King penguins (Aptenodytes patagonicus) are an iconic Southern Ocean species, but the prey distributions that underpin their at-sea foraging tracks and diving behaviour remain unclear. We conducted simultaneous acoustic surveys off South Georgia and tracking of king penguins breeding ashore there in...
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2021
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Online Access: | https://doi.org/10.3389/fmars.2021.745200.s001 |
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ftsmithonian:oai:figshare.com:article/17090453 |
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ftsmithonian:oai:figshare.com:article/17090453 2023-05-15T16:42:08+02:00 Data_Sheet_1_Using Predicted Patterns of 3D Prey Distribution to Map King Penguin Foraging Habitat.docx Roland Proud (11764892) Camille Le Guen (5585975) Richard B. Sherley (7900040) Akiko Kato (251448) Yan Ropert-Coudert (251454) Norman Ratcliffe (171878) Simon Jarman (3263334) Adam Wyness (11764895) John P. Y. Arnould (8847593) Ryan A. Saunders (6683444) Paul G. Fernandes (8169855) Lars Boehme (292266) Andrew S. Brierley (11678460) 2021-11-29T05:40:57Z https://doi.org/10.3389/fmars.2021.745200.s001 unknown https://figshare.com/articles/dataset/Data_Sheet_1_Using_Predicted_Patterns_of_3D_Prey_Distribution_to_Map_King_Penguin_Foraging_Habitat_docx/17090453 doi:10.3389/fmars.2021.745200.s001 CC BY 4.0 CC-BY Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering acoustic surveys Aptenodytes patagonicus diving behaviour foraging habitat king penguin prey distribution Southern Ocean South Georgia Dataset 2021 ftsmithonian https://doi.org/10.3389/fmars.2021.745200.s001 2021-12-19T20:41:33Z King penguins (Aptenodytes patagonicus) are an iconic Southern Ocean species, but the prey distributions that underpin their at-sea foraging tracks and diving behaviour remain unclear. We conducted simultaneous acoustic surveys off South Georgia and tracking of king penguins breeding ashore there in Austral summer 2017 to gain insight into habitat use and foraging behaviour. Acoustic surveys revealed ubiquitous deep scattering layers (DSLs; acoustically detected layers of fish and other micronekton that inhabit the mesopelagic zone) at c. 500 m and shallower ephemeral fish schools. Based on DNA extracted from penguin faecal samples, these schools were likely comprised of lanternfish (an important component of king penguin diets), icefish (Channichthyidae spp.) and painted noties (Lepidonotothen larseni). Penguins did not dive as deep as DSLs, but their prey-encounter depth-distributions, as revealed by biologging, overlapped at fine scale (10s of m) with depths of acoustically detected fish schools. We used neural networks to predict local scale (10 km) fish echo intensity and depth distribution at penguin dive locations based on environmental correlates, and developed models of habitat use. Habitat modelling revealed that king penguins preferentially foraged at locations predicted to have shallow and dense (high acoustic energy) fish schools associated with shallow and dense DSLs. These associations could be used to predict the distribution of king penguins from other colonies at South Georgia for which no tracking data are available, and to identify areas of potential ecological significance within the South Georgia and the South Sandwich Islands marine protected area. Dataset Icefish King Penguins South Sandwich Islands Southern Ocean Unknown Southern Ocean Austral Sandwich Islands South Sandwich Islands South Georgia ENVELOPE(-33.000,-33.000,-56.000,-56.000) |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftsmithonian |
language |
unknown |
topic |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering acoustic surveys Aptenodytes patagonicus diving behaviour foraging habitat king penguin prey distribution Southern Ocean South Georgia |
spellingShingle |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering acoustic surveys Aptenodytes patagonicus diving behaviour foraging habitat king penguin prey distribution Southern Ocean South Georgia Roland Proud (11764892) Camille Le Guen (5585975) Richard B. Sherley (7900040) Akiko Kato (251448) Yan Ropert-Coudert (251454) Norman Ratcliffe (171878) Simon Jarman (3263334) Adam Wyness (11764895) John P. Y. Arnould (8847593) Ryan A. Saunders (6683444) Paul G. Fernandes (8169855) Lars Boehme (292266) Andrew S. Brierley (11678460) Data_Sheet_1_Using Predicted Patterns of 3D Prey Distribution to Map King Penguin Foraging Habitat.docx |
topic_facet |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering acoustic surveys Aptenodytes patagonicus diving behaviour foraging habitat king penguin prey distribution Southern Ocean South Georgia |
description |
King penguins (Aptenodytes patagonicus) are an iconic Southern Ocean species, but the prey distributions that underpin their at-sea foraging tracks and diving behaviour remain unclear. We conducted simultaneous acoustic surveys off South Georgia and tracking of king penguins breeding ashore there in Austral summer 2017 to gain insight into habitat use and foraging behaviour. Acoustic surveys revealed ubiquitous deep scattering layers (DSLs; acoustically detected layers of fish and other micronekton that inhabit the mesopelagic zone) at c. 500 m and shallower ephemeral fish schools. Based on DNA extracted from penguin faecal samples, these schools were likely comprised of lanternfish (an important component of king penguin diets), icefish (Channichthyidae spp.) and painted noties (Lepidonotothen larseni). Penguins did not dive as deep as DSLs, but their prey-encounter depth-distributions, as revealed by biologging, overlapped at fine scale (10s of m) with depths of acoustically detected fish schools. We used neural networks to predict local scale (10 km) fish echo intensity and depth distribution at penguin dive locations based on environmental correlates, and developed models of habitat use. Habitat modelling revealed that king penguins preferentially foraged at locations predicted to have shallow and dense (high acoustic energy) fish schools associated with shallow and dense DSLs. These associations could be used to predict the distribution of king penguins from other colonies at South Georgia for which no tracking data are available, and to identify areas of potential ecological significance within the South Georgia and the South Sandwich Islands marine protected area. |
format |
Dataset |
author |
Roland Proud (11764892) Camille Le Guen (5585975) Richard B. Sherley (7900040) Akiko Kato (251448) Yan Ropert-Coudert (251454) Norman Ratcliffe (171878) Simon Jarman (3263334) Adam Wyness (11764895) John P. Y. Arnould (8847593) Ryan A. Saunders (6683444) Paul G. Fernandes (8169855) Lars Boehme (292266) Andrew S. Brierley (11678460) |
author_facet |
Roland Proud (11764892) Camille Le Guen (5585975) Richard B. Sherley (7900040) Akiko Kato (251448) Yan Ropert-Coudert (251454) Norman Ratcliffe (171878) Simon Jarman (3263334) Adam Wyness (11764895) John P. Y. Arnould (8847593) Ryan A. Saunders (6683444) Paul G. Fernandes (8169855) Lars Boehme (292266) Andrew S. Brierley (11678460) |
author_sort |
Roland Proud (11764892) |
title |
Data_Sheet_1_Using Predicted Patterns of 3D Prey Distribution to Map King Penguin Foraging Habitat.docx |
title_short |
Data_Sheet_1_Using Predicted Patterns of 3D Prey Distribution to Map King Penguin Foraging Habitat.docx |
title_full |
Data_Sheet_1_Using Predicted Patterns of 3D Prey Distribution to Map King Penguin Foraging Habitat.docx |
title_fullStr |
Data_Sheet_1_Using Predicted Patterns of 3D Prey Distribution to Map King Penguin Foraging Habitat.docx |
title_full_unstemmed |
Data_Sheet_1_Using Predicted Patterns of 3D Prey Distribution to Map King Penguin Foraging Habitat.docx |
title_sort |
data_sheet_1_using predicted patterns of 3d prey distribution to map king penguin foraging habitat.docx |
publishDate |
2021 |
url |
https://doi.org/10.3389/fmars.2021.745200.s001 |
long_lat |
ENVELOPE(-33.000,-33.000,-56.000,-56.000) |
geographic |
Southern Ocean Austral Sandwich Islands South Sandwich Islands South Georgia |
geographic_facet |
Southern Ocean Austral Sandwich Islands South Sandwich Islands South Georgia |
genre |
Icefish King Penguins South Sandwich Islands Southern Ocean |
genre_facet |
Icefish King Penguins South Sandwich Islands Southern Ocean |
op_relation |
https://figshare.com/articles/dataset/Data_Sheet_1_Using_Predicted_Patterns_of_3D_Prey_Distribution_to_Map_King_Penguin_Foraging_Habitat_docx/17090453 doi:10.3389/fmars.2021.745200.s001 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fmars.2021.745200.s001 |
_version_ |
1766032569315360768 |