Vertical distribution, composition and migratory patterns of acoustic scattering layers in the Canary Islands
Diel vertical migration (DVM) facilitates biogeochemical exchanges between shallow waters and the deep ocean. An effective way of monitoring the migrant biota is by acoustic observations although the interpretation of the scattering layers poses challenges. Here we combine results from acoustic obse...
Published in: | Journal of Marine Systems |
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Online Access: | http://hdl.handle.net/10754/594711 https://doi.org/10.1016/j.jmarsys.2016.01.004 |
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ftkingabdullahun:oai:repository.kaust.edu.sa:10754/594711 2023-12-31T10:21:09+01:00 Vertical distribution, composition and migratory patterns of acoustic scattering layers in the Canary Islands Ariza, A. Landeira, J.M. Escánez, A. Wienerroither, R. Aguilar de Soto, N. Røstad, Anders Kaartvedt, S. Hernández-León, S. King Abdullah University of Science and Technology (KAUST) Red Sea Research Center (RSRC) Instituto de Oceanografía y Cambio global, Universidad de Las Palmas de Gran Canaria, Las Palmas, Spain Graduate School of Fisheries Sciences, Hokkaido University, Hakodate, Japan Departamento de Ecoloxía e Bioloxía Animal, Universidad de Vigo, Vigo, Spain Institute of Marine Research, Bergen, Norway Departamento de Biología Animal, Edafología y Geología, Universidad de La Laguna, Santa Cruz de Tenerife, Spain Department of Biosciences, University of Oslo, Oslo, Norway 2016-01-21 application/pdf http://hdl.handle.net/10754/594711 https://doi.org/10.1016/j.jmarsys.2016.01.004 en eng Elsevier BV http://linkinghub.elsevier.com/retrieve/pii/S0924796316000178 Vertical distribution, composition and migratory patterns of acoustic scattering layers in the Canary Islands 2016 Journal of Marine Systems doi:10.1016/j.jmarsys.2016.01.004 09247963 Journal of Marine Systems http://hdl.handle.net/10754/594711 NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Marine Systems. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Marine Systems, 21 January 2016. DOI:10.1016/j.jmarsys.2016.01.004 Diel Vertical Migration mesopelagic Deep Scattering Layer micronekton swimbladder resonance Article 2016 ftkingabdullahun https://doi.org/10.1016/j.jmarsys.2016.01.004 2023-12-02T20:21:22Z Diel vertical migration (DVM) facilitates biogeochemical exchanges between shallow waters and the deep ocean. An effective way of monitoring the migrant biota is by acoustic observations although the interpretation of the scattering layers poses challenges. Here we combine results from acoustic observations at 18 and 38 kHz with limited net sampling in order to unveil the origin of acoustic phenomena around the Canary Islands, subtropical northeast Atlantic Ocean. Trawling data revealed a high diversity of fishes, decapods and cephalopods (152 species), although few dominant species likely were responsible for most of the sound scattering in the region. We identified four different acoustic scattering layers in the mesopelagic realm: (1) at 400–500 m depth, a swimbladder resonance phenomenon at 18 kHz produced by gas-bearing migrant fish such as Vinciguerria spp. and Lobianchia dofleini, (2) at 500–600 m depth, a dense 38 kHz layer resulting primarily from the gas-bearing and non-migrant fish Cyclothone braueri, and to a lesser extent, from fluid-like migrant fauna also inhabiting these depths, (3) between 600 and 800 m depth, a weak signal at both 18 and 38 kHz ascribed either to migrant fish or decapods, and (4) below 800 m depth, a weak non-migrant layer at 18 kHz which was not sampled. All the dielly migrating layers reached the epipelagic zone at night, with the shorter-range migrations moving at 4.6 ± 2.6 cm s − 1 and the long-range ones at 11.5 ± 3.8 cm s − 1. This work reduces uncertainties interpreting standard frequencies in mesopelagic studies, while enhances the potential of acoustics for future research and monitoring of the deep pelagic fauna in the Canary Islands. Article in Journal/Newspaper Northeast Atlantic King Abdullah University of Science and Technology: KAUST Repository Journal of Marine Systems 157 82 91 |
institution |
Open Polar |
collection |
King Abdullah University of Science and Technology: KAUST Repository |
op_collection_id |
ftkingabdullahun |
language |
English |
topic |
Diel Vertical Migration mesopelagic Deep Scattering Layer micronekton swimbladder resonance |
spellingShingle |
Diel Vertical Migration mesopelagic Deep Scattering Layer micronekton swimbladder resonance Ariza, A. Landeira, J.M. Escánez, A. Wienerroither, R. Aguilar de Soto, N. Røstad, Anders Kaartvedt, S. Hernández-León, S. Vertical distribution, composition and migratory patterns of acoustic scattering layers in the Canary Islands |
topic_facet |
Diel Vertical Migration mesopelagic Deep Scattering Layer micronekton swimbladder resonance |
description |
Diel vertical migration (DVM) facilitates biogeochemical exchanges between shallow waters and the deep ocean. An effective way of monitoring the migrant biota is by acoustic observations although the interpretation of the scattering layers poses challenges. Here we combine results from acoustic observations at 18 and 38 kHz with limited net sampling in order to unveil the origin of acoustic phenomena around the Canary Islands, subtropical northeast Atlantic Ocean. Trawling data revealed a high diversity of fishes, decapods and cephalopods (152 species), although few dominant species likely were responsible for most of the sound scattering in the region. We identified four different acoustic scattering layers in the mesopelagic realm: (1) at 400–500 m depth, a swimbladder resonance phenomenon at 18 kHz produced by gas-bearing migrant fish such as Vinciguerria spp. and Lobianchia dofleini, (2) at 500–600 m depth, a dense 38 kHz layer resulting primarily from the gas-bearing and non-migrant fish Cyclothone braueri, and to a lesser extent, from fluid-like migrant fauna also inhabiting these depths, (3) between 600 and 800 m depth, a weak signal at both 18 and 38 kHz ascribed either to migrant fish or decapods, and (4) below 800 m depth, a weak non-migrant layer at 18 kHz which was not sampled. All the dielly migrating layers reached the epipelagic zone at night, with the shorter-range migrations moving at 4.6 ± 2.6 cm s − 1 and the long-range ones at 11.5 ± 3.8 cm s − 1. This work reduces uncertainties interpreting standard frequencies in mesopelagic studies, while enhances the potential of acoustics for future research and monitoring of the deep pelagic fauna in the Canary Islands. |
author2 |
King Abdullah University of Science and Technology (KAUST) Red Sea Research Center (RSRC) Instituto de Oceanografía y Cambio global, Universidad de Las Palmas de Gran Canaria, Las Palmas, Spain Graduate School of Fisheries Sciences, Hokkaido University, Hakodate, Japan Departamento de Ecoloxía e Bioloxía Animal, Universidad de Vigo, Vigo, Spain Institute of Marine Research, Bergen, Norway Departamento de Biología Animal, Edafología y Geología, Universidad de La Laguna, Santa Cruz de Tenerife, Spain Department of Biosciences, University of Oslo, Oslo, Norway |
format |
Article in Journal/Newspaper |
author |
Ariza, A. Landeira, J.M. Escánez, A. Wienerroither, R. Aguilar de Soto, N. Røstad, Anders Kaartvedt, S. Hernández-León, S. |
author_facet |
Ariza, A. Landeira, J.M. Escánez, A. Wienerroither, R. Aguilar de Soto, N. Røstad, Anders Kaartvedt, S. Hernández-León, S. |
author_sort |
Ariza, A. |
title |
Vertical distribution, composition and migratory patterns of acoustic scattering layers in the Canary Islands |
title_short |
Vertical distribution, composition and migratory patterns of acoustic scattering layers in the Canary Islands |
title_full |
Vertical distribution, composition and migratory patterns of acoustic scattering layers in the Canary Islands |
title_fullStr |
Vertical distribution, composition and migratory patterns of acoustic scattering layers in the Canary Islands |
title_full_unstemmed |
Vertical distribution, composition and migratory patterns of acoustic scattering layers in the Canary Islands |
title_sort |
vertical distribution, composition and migratory patterns of acoustic scattering layers in the canary islands |
publisher |
Elsevier BV |
publishDate |
2016 |
url |
http://hdl.handle.net/10754/594711 https://doi.org/10.1016/j.jmarsys.2016.01.004 |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_relation |
http://linkinghub.elsevier.com/retrieve/pii/S0924796316000178 Vertical distribution, composition and migratory patterns of acoustic scattering layers in the Canary Islands 2016 Journal of Marine Systems doi:10.1016/j.jmarsys.2016.01.004 09247963 Journal of Marine Systems http://hdl.handle.net/10754/594711 |
op_rights |
NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Marine Systems. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Marine Systems, 21 January 2016. DOI:10.1016/j.jmarsys.2016.01.004 |
op_doi |
https://doi.org/10.1016/j.jmarsys.2016.01.004 |
container_title |
Journal of Marine Systems |
container_volume |
157 |
container_start_page |
82 |
op_container_end_page |
91 |
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1786831831377641472 |