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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2016
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Online Access: | http://hdl.handle.net/10553/52569 https://doi.org/10.1016/j.jmarsys.2016.01.004 |
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ftunivlaspalmas:oai:accedacris.ulpgc.es:10553/52569 2023-11-12T04:23:11+01:00 Vertical distribution, composition and migratory patterns of acoustic scattering layers in the Canary Islands Vicente Ariza,Alejandro Landeira Sánchez, José María Escánez, A. Wienerroither, R. Aguilar de Soto, N. Røstad, A. Kaartvedt, Stein Hernández-León, S. 55312599400 26429503700 55505482100 26321246000 8233615700 8876056100 7003377290 6701465678 5687641 1774263 5129013 4464678 2822931 1476766 308204 489706 WOS:Ariza, A WOS:Landeira, JM WOS:Escanez, A WOS:Wienerroither, R WOS:de Soto, NA WOS:Rostad, A WOS:Kaartvedt, S WOS:Hernandez-Leon, S BU-BAS 2016 http://hdl.handle.net/10553/52569 https://doi.org/10.1016/j.jmarsys.2016.01.004 eng eng Journal of Marine Systems 157 0924-7963 http://hdl.handle.net/10553/52569 doi:10.1016/j.jmarsys.2016.01.004 84956696320 000371938500007 Sí Journal of Marine Systems [ISSN 0924-7963], v. 157, p. 82-91 2510 Oceanografía 240119 Zoología marina Deep scattering layer Diel vertical migration Mesopelagic Micronekton Swimbladder resonance info:eu-repo/semantics/Article Article 2016 ftunivlaspalmas https://doi.org/10.1016/j.jmarsys.2016.01.004 2023-10-17T23:16:05Z 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 38kHz 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 400-500m depth, a swimbladder resonance phenomenon at 18kHz produced by gas-bearing migrant fish such as Vinciguerria spp. and Lobianchia dofleini, (2) at 500-600m depth, a dense 38kHz 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 800m depth, a weak signal at both 18 and 38kHz ascribed either to migrant fish or decapods, and (4) below 800m depth, a weak non-migrant layer at 18kHz which was not sampled. All the dielly migrating layers reached the epipelagic zone at night, with the shorter-range migrations moving at 4.6±2.6cms-1 and the long-range ones at 11.5±3.8cms-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. 91 82 1,403 2,439 Q1 Q1 SCIE Article in Journal/Newspaper Northeast Atlantic Universidad de Las Palmas de Gran Canaria: Acceda Journal of Marine Systems 157 82 91 |
institution |
Open Polar |
collection |
Universidad de Las Palmas de Gran Canaria: Acceda |
op_collection_id |
ftunivlaspalmas |
language |
English |
topic |
2510 Oceanografía 240119 Zoología marina Deep scattering layer Diel vertical migration Mesopelagic Micronekton Swimbladder resonance |
spellingShingle |
2510 Oceanografía 240119 Zoología marina Deep scattering layer Diel vertical migration Mesopelagic Micronekton Swimbladder resonance Vicente Ariza,Alejandro Landeira Sánchez, José María Escánez, A. Wienerroither, R. Aguilar de Soto, N. Røstad, A. Kaartvedt, Stein Hernández-León, S. Vertical distribution, composition and migratory patterns of acoustic scattering layers in the Canary Islands |
topic_facet |
2510 Oceanografía 240119 Zoología marina Deep scattering layer Diel vertical migration Mesopelagic 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 38kHz 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 400-500m depth, a swimbladder resonance phenomenon at 18kHz produced by gas-bearing migrant fish such as Vinciguerria spp. and Lobianchia dofleini, (2) at 500-600m depth, a dense 38kHz 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 800m depth, a weak signal at both 18 and 38kHz ascribed either to migrant fish or decapods, and (4) below 800m depth, a weak non-migrant layer at 18kHz which was not sampled. All the dielly migrating layers reached the epipelagic zone at night, with the shorter-range migrations moving at 4.6±2.6cms-1 and the long-range ones at 11.5±3.8cms-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. 91 82 1,403 2,439 Q1 Q1 SCIE |
author2 |
55312599400 26429503700 55505482100 26321246000 8233615700 8876056100 7003377290 6701465678 5687641 1774263 5129013 4464678 2822931 1476766 308204 489706 WOS:Ariza, A WOS:Landeira, JM WOS:Escanez, A WOS:Wienerroither, R WOS:de Soto, NA WOS:Rostad, A WOS:Kaartvedt, S WOS:Hernandez-Leon, S BU-BAS |
format |
Article in Journal/Newspaper |
author |
Vicente Ariza,Alejandro Landeira Sánchez, José María Escánez, A. Wienerroither, R. Aguilar de Soto, N. Røstad, A. Kaartvedt, Stein Hernández-León, S. |
author_facet |
Vicente Ariza,Alejandro Landeira Sánchez, José María Escánez, A. Wienerroither, R. Aguilar de Soto, N. Røstad, A. Kaartvedt, Stein Hernández-León, S. |
author_sort |
Vicente Ariza,Alejandro |
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 |
publishDate |
2016 |
url |
http://hdl.handle.net/10553/52569 https://doi.org/10.1016/j.jmarsys.2016.01.004 |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_source |
Journal of Marine Systems [ISSN 0924-7963], v. 157, p. 82-91 |
op_relation |
Journal of Marine Systems 157 0924-7963 http://hdl.handle.net/10553/52569 doi:10.1016/j.jmarsys.2016.01.004 84956696320 000371938500007 Sí |
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 |
_version_ |
1782338037173190656 |