What question did this study set out to answer?

To design and test VERDA, an autonomous carousel cod-end multisampler that collects stratified micronekton samples at distinct mesopelagic depths without dedicated electrical cables.

January 2, 2023Journal of Marine Science and EngineeringOpen Access

VERDA: A Multisampler Tool for Mesopelagic Nets

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Authors

ACArturo CastellónMarine Technology Unit MOM. Pilar OlivarInstitut Català de Ciències del Clima

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Implication

Development study demonstrates an autonomous revolver cod-end sampler for mesopelagic trawls, indicating cost-effective stratified micronekton sampling across diverse research vessels.

Key Points

To design and test VERDA, an autonomous carousel cod-end multisampler that collects stratified micronekton samples at distinct mesopelagic depths without dedicated electrical cables.
Engineered a revolver-style cod-end mechanism with six to eight rotating compartments controlled by low-cost Arduino and Teensy microcontroller platforms.
Deployed the prototype on a doorless, single-cable midwater trawl net measuring approximately 30 m² at the mouth and 58 m in total length.
Monitored net geometry and operational depth in real time using Scanmar and Marport sensor packages.
Enabled automated depth-triggered rotation to isolate organisms captured at specific water column strata, reducing cross-strata sample contamination.
Eliminated the requirement for specialized acoustic release systems or electro-mechanical towing cables, permitting use on diverse vessel configurations.

Cite This Study

Castellón et al. (2023) studied this question.

synapsesocial.com/papers/6aadfbd00e0d4884f98746bc https://doi.org/10.3390/jmse11010072

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Implication

Development study demonstrates an autonomous revolver cod-end sampler for mesopelagic trawls, indicating cost-effective stratified micronekton sampling across diverse research vessels.

VERDA: A Multisampler Tool for Mesopelagic Nets

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Implication

Key Points

Cite This Study

VERDA: A Multisampler Tool for Mesopelagic Nets

Discussion

Member takes

Implication

Key Points

Cite This Study

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