PANGAEA_942987
Fish and invertebrate trawl sampling south and west of Iceland in July 2021
Ólafsdóttir, Anna H; Pampoulie, Christophe
Fish and invertebrate trawl sampling south and west of Iceland in July 2021
2022-04-04
PANGAEA
Dataset
https://doi.pangaea.de/10.1594/PANGAEA.942987
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
A12-2021_323
A12-2021_324
A12-2021_325
A12-2021_326
A12-2021_327
A12-2021_328
A12-2021_329
A12-2021_330
A12-2021_331
A12-2021_332
A12-2021_333
A12-2021_334
A12-2021_335
A12-2021_336
A12-2021_337
A12-2021_338
A12-2021_339
A12-2021_340
A12-2021_341
A12-2021_342
A12-2021_343
A12-2021_344
A12-2021_345
A12-2021_346
A12-2021_347
A12-2021_348
A12-2021_349
A12-2021_350
A12-2021_351
A12-2021_352
A12-2021_353
A12-2021_354
A12-2021_355
A12-2021_356
A12-2021_357
A12-2021_358
A12-2021_359
A12-2021_360
biological measurements
IESSNS
IESSNS_2021
July 2021
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
2021-07-17
2021-07-26
Complete
62.7135
65.2106666666667
-30.673000000000002
-15.269000000000005
13.5 m (DEPTH, water)
329.0 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
Leobener Str.
Bremen
Bremen
28359
Germany
online
165502 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
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; Finnbogadóttir, Gudrún; Kennedy, James; Sigurgeirsdóttir, Sólrún; Aradóttir, Svandís Eva (2022): Results of the Icelandic part of the International Ecosystem Summer Survey in Nordic Seas (IESSNS) in July 2021 on R/V Árni Friðriksson. Marine and Freshwater Research Institute, Iceland, 40 pp., https://download.pangaea.de/reference/112493/attachments/IESSNS_IS_2021.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.
Description and map of the sampling points (Survey IESSNS 2021) (URI: https://download.pangaea.de/reference/112492/attachments/Map_IESSNS_2021.zip)
This data set has trawl catch weight and biological measurements from the latter half of the Icelandic part of the International Ecosystem Summer Survey in Nordic Seas (IESSNS) conducted in July 2021. The survey area was from the coast and over the shelf edge south and west of Iceland, defined as IESSNS strata 5 and 6, see embedded map. The survey period was July 17 – 26, 2021, and samples were collected at 38 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 38 stations. Trawl depth ranged from surface (trawl headline in surface) at 22 stations and 8 stations was trawling deeper in the water column targeting specific acoustic backscatter with trawl depth of 100 – 400 m. 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 or scale was extracted whole from specimen at sea and read whole under a dissecting microscope on land by an experienced age reader 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 et al. 2022) in Icelandic and abstract, figure and table headings also provided in English. Various information about the trawling operation and weather is included in file. 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.942987"!
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
DIF
9.4
2022-04-04
2026-09-15