VERDA: A Multisampler Tool for Mesopelagic Nets
Different types and systems to discriminate plankton samples at different strata in the water column have been developed in recent decades. For sampling at sufficient depth, opening and closing zooplankton multinets are ideal because there is no contamination of one sample with organisms of the prev...
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Multidisciplinary Digital Publishing Institute
2023
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Online Access: | https://doi.org/10.3390/jmse11010072 |
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ftmdpi:oai:mdpi.com:/2077-1312/11/1/72/ 2023-08-20T04:07:30+02:00 VERDA: A Multisampler Tool for Mesopelagic Nets Arturo Castellón María Pilar Olivar agris 2023-01-02 application/pdf https://doi.org/10.3390/jmse11010072 EN eng Multidisciplinary Digital Publishing Institute Physical Oceanography https://dx.doi.org/10.3390/jmse11010072 https://creativecommons.org/licenses/by/4.0/ Journal of Marine Science and Engineering; Volume 11; Issue 1; Pages: 72 stratified sampling micronekton midwater trawls Mesopelagos Text 2023 ftmdpi https://doi.org/10.3390/jmse11010072 2023-08-01T08:05:53Z Different types and systems to discriminate plankton samples at different strata in the water column have been developed in recent decades. For sampling at sufficient depth, opening and closing zooplankton multinets are ideal because there is no contamination of one sample with organisms of the previous one. However, for bigger nets, such as those used to collect micronektonic organism, it is difficult to use multiple net units, and multiple cod ends are preferred because of their simplicity, but with the problem of sample contamination from having a common net passageway. We present here a cod-end Multisampler design, VERDA, that uses a carrousel-like system. Similar to some sediment traps, the system works like a revolver with six or eight compartments whose turning mechanism is triggered when the net arrives to a programmed depth level. This prototype was built with inexpensive and recycled components and electronics similar to Arduino® and Teensy PCB to carry out electronic control. The net we used for testing the equipment was a mid-size midwater trawl of ca. 30 m2 and total length of 58 m that works with a single towing cable and no doors. The overall system is useful for all type of ships, due to the relatively easy deployment operations and because the Multisampler does not need electrical cable or acoustics. In our case, we used a Marport® (Reykjavik Iceland) and Scanmar (Åsgårdstrand, Norway) sensors for real-time depth monitoring and opening distance. Text Iceland MDPI Open Access Publishing Norway Journal of Marine Science and Engineering 11 1 72 |
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Open Polar |
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MDPI Open Access Publishing |
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ftmdpi |
language |
English |
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stratified sampling micronekton midwater trawls Mesopelagos |
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stratified sampling micronekton midwater trawls Mesopelagos Arturo Castellón María Pilar Olivar VERDA: A Multisampler Tool for Mesopelagic Nets |
topic_facet |
stratified sampling micronekton midwater trawls Mesopelagos |
description |
Different types and systems to discriminate plankton samples at different strata in the water column have been developed in recent decades. For sampling at sufficient depth, opening and closing zooplankton multinets are ideal because there is no contamination of one sample with organisms of the previous one. However, for bigger nets, such as those used to collect micronektonic organism, it is difficult to use multiple net units, and multiple cod ends are preferred because of their simplicity, but with the problem of sample contamination from having a common net passageway. We present here a cod-end Multisampler design, VERDA, that uses a carrousel-like system. Similar to some sediment traps, the system works like a revolver with six or eight compartments whose turning mechanism is triggered when the net arrives to a programmed depth level. This prototype was built with inexpensive and recycled components and electronics similar to Arduino® and Teensy PCB to carry out electronic control. The net we used for testing the equipment was a mid-size midwater trawl of ca. 30 m2 and total length of 58 m that works with a single towing cable and no doors. The overall system is useful for all type of ships, due to the relatively easy deployment operations and because the Multisampler does not need electrical cable or acoustics. In our case, we used a Marport® (Reykjavik Iceland) and Scanmar (Åsgårdstrand, Norway) sensors for real-time depth monitoring and opening distance. |
format |
Text |
author |
Arturo Castellón María Pilar Olivar |
author_facet |
Arturo Castellón María Pilar Olivar |
author_sort |
Arturo Castellón |
title |
VERDA: A Multisampler Tool for Mesopelagic Nets |
title_short |
VERDA: A Multisampler Tool for Mesopelagic Nets |
title_full |
VERDA: A Multisampler Tool for Mesopelagic Nets |
title_fullStr |
VERDA: A Multisampler Tool for Mesopelagic Nets |
title_full_unstemmed |
VERDA: A Multisampler Tool for Mesopelagic Nets |
title_sort |
verda: a multisampler tool for mesopelagic nets |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2023 |
url |
https://doi.org/10.3390/jmse11010072 |
op_coverage |
agris |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
Journal of Marine Science and Engineering; Volume 11; Issue 1; Pages: 72 |
op_relation |
Physical Oceanography https://dx.doi.org/10.3390/jmse11010072 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/jmse11010072 |
container_title |
Journal of Marine Science and Engineering |
container_volume |
11 |
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1 |
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72 |
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1774719161204736000 |