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Abundance mesopelagic fish collected during Maria S. Merian cruise MSM26, spring 2013

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Titel: Abundance mesopelagic fish collected during Maria S. Merian cruise MSM26, spring 2013
Autoren: Walsh, Harvey Joseph, Hare, Jonathan A
Verlagsinformationen: PANGAEA
Publikationsjahr: 2014
Bestand: PANGAEA - Data Publisher for Earth & Environmental Science (AWI Bremerhaven / MARUM Bremen)
Schlagwörter: Abundance per volume, Basin Scale Analysis, Synthesis and Integration, Date/Time of event, Depth, bottom/max, top/min, water, D-MOC, Double opening/closing plankton net, EURO-BASIN, Event label, IKMT, Isaac-Kid-Midwater Trawl, Latitude of event, Longitude of event, Maria S. Merian, Method/Device of event, MSM26, MSM26_126-13, MSM26_126-15, MSM26_126-9, MSM26_127-17, MSM26_127-21, MSM26_127-5, MSM26_131-10, MSM26_131-17, MSM26_131-8, MSM26_133-1, MSM26_133-13
Geographisches Schlagwort: MEDIAN LATITUDE: 60.410578 * MEDIAN LONGITUDE: -32.670457 * SOUTH-BOUND LATITUDE: 53.358833 * WEST-BOUND LONGITUDE: -56.074000 * NORTH-BOUND LATITUDE: 62.856000 * EAST-BOUND LONGITUDE: -10.791000 * DATE/TIME START: 2013-03-25T13:24:00 * DATE/TIME END: 2013-04-13T22:39:00 * MINIMUM DEPTH, water: 9.729 m * MAXIMUM DEPTH, water: 1125.297 m
Beschreibung: Mesopelagic fish were collected using a 1 m**2 Double-MOCNESS (Multiple Opening and Closing Net and Environmental Sensing System) and 4.5 m**2 IKMT (Isaacs-Kidd midwater trawl). The main portion of the IKMT was 20 mm knotted nylon, and the tail bag was 3 mm knotless nylon. Oblique IKMT tows were made to a maximum depth of 500 m at a tow speed of 3.5 knots. The original cruise plan intended for nighttime IKMT tows, but tow times varied due to operational constraints. The MOCNESS was equipped with 20 nets of 333 µm mesh size; 10 nets per side. The towing speed was 2 knots. Samples were collected to a maximum depth of 1250 m. The first oblique nets sampled from the surface to the max depth, and the other nets sampled depth stratified bins of the water column. MOCNESS hauls were performed during day and night to investigate diel vertical migrations. Mesoplelagic fish were processed on board. All fish were picked from all IKMT nets, most oblique MOCNESS nets, and the left side nets of the depth stratified MOCNESS samples. The Depth stratified nets from the right side of the MOCNESS frame were preserved in 5 % formalin for future quantitative analyses of the nekton. Fish were identified to the lowest possible taxa using Whitehead et al. (1984) and Fahay (2007). Standard length of each fish was measured to the nearest 0.1 mm using a digital caliper. Measured and identified fish were frozen in an -80 °C freezer, and shipped to the University of Hamburg at the end of the cruise.
Publikationsart: dataset
Dateibeschreibung: text/tab-separated-values, 2844 data points
Sprache: English
Relation: https://doi.org/10.1594/PANGAEA.835331; https://doi.pangaea.de/10.1594/PANGAEA.836275; https://doi.org/10.1594/PANGAEA.836275
DOI: 10.1594/PANGAEA.836275
Verfügbarkeit: https://doi.pangaea.de/10.1594/PANGAEA.836275
https://doi.org/10.1594/PANGAEA.836275
Rights: CC-BY-3.0: Creative Commons Attribution 3.0 Unported ; Access constraints: unrestricted ; info:eu-repo/semantics/openAccess
Dokumentencode: edsbas.1D6B00BD
Datenbank: BASE
Beschreibung
Abstract:Mesopelagic fish were collected using a 1 m**2 Double-MOCNESS (Multiple Opening and Closing Net and Environmental Sensing System) and 4.5 m**2 IKMT (Isaacs-Kidd midwater trawl). The main portion of the IKMT was 20 mm knotted nylon, and the tail bag was 3 mm knotless nylon. Oblique IKMT tows were made to a maximum depth of 500 m at a tow speed of 3.5 knots. The original cruise plan intended for nighttime IKMT tows, but tow times varied due to operational constraints. The MOCNESS was equipped with 20 nets of 333 µm mesh size; 10 nets per side. The towing speed was 2 knots. Samples were collected to a maximum depth of 1250 m. The first oblique nets sampled from the surface to the max depth, and the other nets sampled depth stratified bins of the water column. MOCNESS hauls were performed during day and night to investigate diel vertical migrations. Mesoplelagic fish were processed on board. All fish were picked from all IKMT nets, most oblique MOCNESS nets, and the left side nets of the depth stratified MOCNESS samples. The Depth stratified nets from the right side of the MOCNESS frame were preserved in 5 % formalin for future quantitative analyses of the nekton. Fish were identified to the lowest possible taxa using Whitehead et al. (1984) and Fahay (2007). Standard length of each fish was measured to the nearest 0.1 mm using a digital caliper. Measured and identified fish were frozen in an -80 °C freezer, and shipped to the University of Hamburg at the end of the cruise.
DOI:10.1594/PANGAEA.836275