PANGAEA_930437 Fish and invertebrate trawl sampling south of Iceland and in southern Irminger Sea in July 2020 Ólafsdóttir, Anna H; Pampoulie, Christophe Fish and invertebrate trawl sampling south of Iceland and in southern Irminger Sea in July 2020 2021-04-16 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.930437 Investigator Anna H Ólafsdóttir anna.olafsdottir@hafogvatn.is Earth Science Event label Country Year of observation Station label Comment DATE/TIME LATITUDE LONGITUDE Latitude 2 Longitude 2 Depth, bathymetric Towing speed Trawling time Trawling distance Trawl vertical opening Trawl door horizontal opening Trawl headline depth DEPTH, water Code Mesh size Sweeps length Wire length Wind speed Wind direction Cloud cover Temperature, water Temperature, air Pressure, atmospheric Taxon/taxa, unique identification Taxon/taxa, unique identification (Semantic URI) Taxon/taxa, unique identification (URI) Length Weight, total, wet Sex Gonadal stage Liver, wet mass Stomach, wet mass Age Mass Number of individuals Identification geoscientificInformation A7-2020_406 A7-2020_407 A7-2020_408 A7-2020_409 A7-2020_410 A7-2020_411 A7-2020_412 A7-2020_413 A7-2020_414 A7-2020_415 A7-2020_416 A7-2020_417 A7-2020_418 A7-2020_419 A7-2020_420 A7-2020_421 A7-2020_422 A7-2020_423 A7-2020_424 A7-2020_425 A7-2020_426 A7-2020_427 A7-2020_428 A7-2020_429 A7-2020_430 A7-2020_431 A7-2020_432 A7-2020_433 A7-2020_434 A7-2020_435 A7-2020_436 A7-2020_437 A7-2020_438 A7-2020_442 A7-2020_443 A7-2020_444 A7-2020_445 A7-2020_446 A7-2020_452 A7-2020_453 A7-2020_454 biological measurements IESSNS IESSNS_2020 July 2020 mesopelagic fish mesopelagic invertebrates Multipurpose pelagic trawl - 832 Northeast Atlantic trawl catch Calculated average/mean values Visual identification Fish measuring board Fish, wet weighed Weighed (scale) Otolith reader Counting, visual Arni Fridriksson 2020-07-11 2020-07-28 Complete 57.498 63.5478333333333 -42.6116666666667 -15.174 13.75 m (DEPTH, water) 442.5 m (DEPTH, water) SUMMER Sustainable Management of Mesopelagic Resources unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

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Bremen Bremen 28359 Germany online 61463 data points text/tab-separated-values Matthews, Charlotte Sarah; Kennedy, James; Ólafsdóttir, Anna H; Pampoulie, Christophe (2024): Biological Characteristics of the Glacier Lantern Fish Benthosema glaciale (Myctophidae) in Icelandic Waters and the Irminger Sea During Summer. Ecology and Evolution, 14(10), e70386, https://doi.org/10.1002/ece3.70386 Ólafsdóttir, Anna H; Pampoulie, Christophe (2020): Fish and invertebrate trawl sampling south and west of Iceland in July 2018 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.915969 Ólafsdóttir, Anna H; Pampoulie, Christophe (2020): Fish and invertebrate trawl sampling south and west of Iceland in July 2019 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.918336 International Council for the Exploration of the Sea (ICES) (2013): Report of the Working Group on Improving Use of Survey Data for Assessment and Advice (WGISDAA). Marine Institute, Dublin, Ireland. ICES CM 2013/SSGESST:07, 22 pp. International Council for the Exploration of the Sea (ICES) (2013): Report of the Workshop on Northeast Atlantic Mackerel monitoring and methodologies including science and industry involvement (WKNAMMM). ICES Headquarters, Copenhagen and Hirtshals, Denmark. ICES CM 2013/SSGESST:18, 33 pp. Ólafsdóttir, Anna H; Kennedy, James (2020): Results of the Icelandic part of the International Ecosystem Summer Survey in Nordic Seas (IESSNS) in 2020 on R/V Árni Friðriksson. HV 2020-46. Marine and Freshwater Research Institute, Iceland, 35 pp., https://download.pangaea.de/reference/124952/attachments/1608030621-hv2020-46.pdf Valdemarsen, J W; Jacobsen, J A; Óskarsson, Guomundur J; Utne, Kjell Rong; Einarsson, H A; Sveinbjörnsson, Sveinn; Smith, L; Zachariassen, K; Nøttestad, Leif (2014): Swept area estimation of the North East Atlantic mackerel stock using a standardized surface trawling technique. Working Document (WD) to ICES WKPELA, 14 pp. Map of the sampling points (Survey IESSNS 2020) (URI: https://download.pangaea.de/reference/107974/attachments/IESSNS_2020.png)

This data set has trawl catch weight and biological measurements from the 2nd leg of the Icelandic part of the International Ecosystem Summer Survey in Nordic Seas (IESSNS) conducted in July 2020. The survey area was from the coast, over the shelf edge and into the deep-water basins south of Iceland and in the southern part of the Irminger Sea, defined as IESSNS strata 6, 11 and 12, see embedded map. The survey period was July 11 – 30, 2020, and samples were collected at 27 trawl stations. A specifically designed scientific trawl, called Multpelt832 (ICES 2013a-b, Valdemarsen et al. 2014) with cod-end mesh size of 50 mm, was used at all 27 stations. Trawl depth ranged from surface (trawl headline in surface) to 550 m depth. All trawl catch was identified to lowest possible taxonomic level, total weight of each species recorded, and length and weight of 50 specimen per species measured, or all if less was caught. For blue whiting (Micromesistius poutassou), herring (Clupea harengus), and mackerel (Scomber scombrus) more biological measurements are provided such as sex, maturity, age, and stomach weight. For age determination, the otolith was extracted whole from the specimen at sea and read whole under a dissecting microscope on land by an experienced age reader which is a part of the ICES framework. Gonad maturity stage was visually estimated at sea during sampling by an experienced technician. For taxa Scyphozoa and Natantia decapods only total catch weight per station is recorded. For detailed information about the survey see the survey report (Ólafsdóttir and Kennedy 2020). Various information is provided about the trawling operation and weather. The data is provided by the Marine and Freshwater Research Institute (MFRI) in Iceland. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.930437"!

http://en.wikipedia.org/wiki/ISO_6709 LATITUDE http://en.wikipedia.org/wiki/ISO_6709 LONGITUDE http://en.wikipedia.org/wiki/ISO_8601 DATE/TIME http://en.wikipedia.org/wiki/Mass Mass https://doi.org/10.1002/ece3.70386 Biological Characteristics of the Glacier Lantern Fish Benthosema glaciale (Myctophidae) in Icelandic Waters and the Irminger Sea During Summer https://doi.pangaea.de/10.1594/PANGAEA.915969 Fish and invertebrate trawl sampling south and west of Iceland in July 2018 https://doi.pangaea.de/10.1594/PANGAEA.918336 Fish and invertebrate trawl sampling south and west of Iceland in July 2019 https://download.pangaea.de/reference/124952/attachments/1608030621-hv2020-46.pdf IESSNS_2020 DIF 9.4 2021-04-16 2026-04-15