Scientific echosounder data provide a predator’s view of Antarctic krill (Euphausia superba)
Abstract Raw acoustic data were collected in East Antarctica from the RSV Aurora Australis during two surveys: the Krill Availability, Community Trophodynamics and AMISOR Surveys (KACTAS) and the Krill Acoustics and Oceanography Survey (KAOS) in the East Antarctic (centre coordinate 66.5° S, 63° E)....
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ftdoajarticles:oai:doaj.org/article:3df7d7f2bb52429d9428747ce7420f68 2023-06-11T04:05:19+02:00 Scientific echosounder data provide a predator’s view of Antarctic krill (Euphausia superba) M. J. Cox A. J. R. Smith A. S. Brierley J. M. Potts S. Wotherspoon A. Terauds 2023-05-01T00:00:00Z https://doi.org/10.1038/s41597-023-02187-y https://doaj.org/article/3df7d7f2bb52429d9428747ce7420f68 EN eng Nature Portfolio https://doi.org/10.1038/s41597-023-02187-y https://doaj.org/toc/2052-4463 doi:10.1038/s41597-023-02187-y 2052-4463 https://doaj.org/article/3df7d7f2bb52429d9428747ce7420f68 Scientific Data, Vol 10, Iss 1, Pp 1-8 (2023) Science Q article 2023 ftdoajarticles https://doi.org/10.1038/s41597-023-02187-y 2023-05-28T00:38:10Z Abstract Raw acoustic data were collected in East Antarctica from the RSV Aurora Australis during two surveys: the Krill Availability, Community Trophodynamics and AMISOR Surveys (KACTAS) and the Krill Acoustics and Oceanography Survey (KAOS) in the East Antarctic (centre coordinate 66.5° S, 63° E). The KACTAS survey was conducted between 14th to 21st January and 2001, and the KAOS survey was conducted between 16 January and 1 February 2003. We examine the Antarctic krill (Euphausia superba) component of these surveys and provide scientific echosounder (EK500 and EK60) data collected at 38, 120 and 200 kHz, cold water (−1 °C) echosounder calibration parameters and accompanying krill length frequency distributions obtained from trawl data. We processed the acoustic data to apply calibration values and remove noise. The processed data were used to isolate echoes arising from swarms of krill and to estimate metrics for each krill swarm, including internal density and individual swarm biomass. The krill swarm data provide insights to a predators’ views of krill distribution and density. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Antarctica aurora australis East Antarctica Euphausia superba Directory of Open Access Journals: DOAJ Articles Antarctic East Antarctica The Antarctic Scientific Data 10 1 |
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Science Q M. J. Cox A. J. R. Smith A. S. Brierley J. M. Potts S. Wotherspoon A. Terauds Scientific echosounder data provide a predator’s view of Antarctic krill (Euphausia superba) |
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Abstract Raw acoustic data were collected in East Antarctica from the RSV Aurora Australis during two surveys: the Krill Availability, Community Trophodynamics and AMISOR Surveys (KACTAS) and the Krill Acoustics and Oceanography Survey (KAOS) in the East Antarctic (centre coordinate 66.5° S, 63° E). The KACTAS survey was conducted between 14th to 21st January and 2001, and the KAOS survey was conducted between 16 January and 1 February 2003. We examine the Antarctic krill (Euphausia superba) component of these surveys and provide scientific echosounder (EK500 and EK60) data collected at 38, 120 and 200 kHz, cold water (−1 °C) echosounder calibration parameters and accompanying krill length frequency distributions obtained from trawl data. We processed the acoustic data to apply calibration values and remove noise. The processed data were used to isolate echoes arising from swarms of krill and to estimate metrics for each krill swarm, including internal density and individual swarm biomass. The krill swarm data provide insights to a predators’ views of krill distribution and density. |
format |
Article in Journal/Newspaper |
author |
M. J. Cox A. J. R. Smith A. S. Brierley J. M. Potts S. Wotherspoon A. Terauds |
author_facet |
M. J. Cox A. J. R. Smith A. S. Brierley J. M. Potts S. Wotherspoon A. Terauds |
author_sort |
M. J. Cox |
title |
Scientific echosounder data provide a predator’s view of Antarctic krill (Euphausia superba) |
title_short |
Scientific echosounder data provide a predator’s view of Antarctic krill (Euphausia superba) |
title_full |
Scientific echosounder data provide a predator’s view of Antarctic krill (Euphausia superba) |
title_fullStr |
Scientific echosounder data provide a predator’s view of Antarctic krill (Euphausia superba) |
title_full_unstemmed |
Scientific echosounder data provide a predator’s view of Antarctic krill (Euphausia superba) |
title_sort |
scientific echosounder data provide a predator’s view of antarctic krill (euphausia superba) |
publisher |
Nature Portfolio |
publishDate |
2023 |
url |
https://doi.org/10.1038/s41597-023-02187-y https://doaj.org/article/3df7d7f2bb52429d9428747ce7420f68 |
geographic |
Antarctic East Antarctica The Antarctic |
geographic_facet |
Antarctic East Antarctica The Antarctic |
genre |
Antarc* Antarctic Antarctic Krill Antarctica aurora australis East Antarctica Euphausia superba |
genre_facet |
Antarc* Antarctic Antarctic Krill Antarctica aurora australis East Antarctica Euphausia superba |
op_source |
Scientific Data, Vol 10, Iss 1, Pp 1-8 (2023) |
op_relation |
https://doi.org/10.1038/s41597-023-02187-y https://doaj.org/toc/2052-4463 doi:10.1038/s41597-023-02187-y 2052-4463 https://doaj.org/article/3df7d7f2bb52429d9428747ce7420f68 |
op_doi |
https://doi.org/10.1038/s41597-023-02187-y |
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Scientific Data |
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10 |
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1 |
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1768374294331523072 |