Matthews, Charlotte Sarah; Kennedy, James; Ólafsdóttir, Anna H; Pampoulie, Christophe: Size, age and otolith morphometrics of Benthosema glaciale collected during IESSNS south of Iceland in July 2020 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.966741 (dataset in review)
Abstract:
This dataset contains biological measurements and the estimated age of 89 individuals of the North Atlantic myctophid Benthosema glaciale (glacier lantern fish). Individuals were collected opportunistically as bycatch in pelagic trawls (surface and deep) during the Icelandic portion of the International Ecosystem Summer Survey of Nordic Seas (IESSNS) conducted in south Icelandic waters and the Irminger Sea in July 2020. Frozen samples were processed on land in 2022 from five trawl stations located in three IESSNS strata regions (6,11, and 12). Further details on the trawl methodology, sampling and associated environmental variables can be found in related to references and the survey report (Ólafsdóttir and Kennedy, 2020). Observations include multiple length and weight measurements, as well as otolith morphometrics, including otolith length, width and area. Otoliths were photographed on a matte background, proximal side down, and the left otoliths were measured using ImageJ software (if only the right otolith was present, this was used). To age the fish using otoliths, annual rings were counted by two independent readers. If there were inconsistencies in age between them, both readers would confer to reach an agreement, or the otolith was not included in the analysis. The data is provided by the Marine and Freshwater Research Institute (MFRI) in Iceland.
Supplement to:
Matthews, Charlotte Sarah; Kennedy, James; Ólafsdóttir, Anna H; Pampoulie, Christophe (in prep.): Biology and distribution of glacier lantern fish Benthosema glaciale (Myctophidae) in Icelandic waters and the Irminger Sea during summer.
Related to:
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; Pampoulie, Christophe: Fish and invertebrate trawl sampling south of Iceland and in southern Irminger Sea in July 2020. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.930437
References:
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., 1608030621-hv2020-46.pdf
Project(s):
Funding:
Coverage:
Median Latitude: 61.649800 * Median Longitude: -26.685050 * South-bound Latitude: 60.591333 * West-bound Longitude: -32.554500 * North-bound Latitude: 63.215500 * East-bound Longitude: -18.892833
Date/Time Start: 2020-07-14T19:11:00 * Date/Time End: 2020-07-20T05:23:00
Minimum DEPTH, water: 17.2 m * Maximum DEPTH, water: 442.5 m
Event(s):
A7-2020_414 * Latitude Start: 63.039167 * Longitude Start: -21.133333 * Latitude End: 62.953167 * Longitude End: -21.127167 * Date/Time Start: 2020-07-14T19:11:00 * Date/Time End: 2020-07-14T20:46:00 * Elevation: -700.0 m * Mesh size: 50 mm * Location: Nordic Seas * Campaign: IESSNS_2020 (A7-2020) * Basis: Arni Fridriksson * Method/Device: Multipurpose pelagic trawl - 832 (MULTPELT-832)
A7-2020_417 * Latitude Start: 63.215500 * Longitude Start: -18.896500 * Latitude End: 63.157667 * Longitude End: -18.892833 * Date/Time Start: 2020-07-15T14:46:00 * Date/Time End: 2020-07-15T15:47:00 * Elevation Start: -860.0 m * Elevation End: -800.0 m * Mesh size: 50 mm * Location: Nordic Seas * Campaign: IESSNS_2020 (A7-2020) * Basis: Arni Fridriksson * Method/Device: Multipurpose pelagic trawl - 832 (MULTPELT-832)
A7-2020_424 * Latitude Start: 60.800667 * Longitude Start: -28.952500 * Latitude End: 60.796167 * Longitude End: -29.077500 * Date/Time Start: 2020-07-19T13:52:00 * Date/Time End: 2020-07-19T14:52:00 * Elevation Start: -1320.0 m * Elevation End: -1320.0 m * Mesh size: 50 mm * Location: Nordic Seas * Campaign: IESSNS_2020 (A7-2020) * Basis: Arni Fridriksson * Method/Device: Multipurpose pelagic trawl - 832 (MULTPELT-832)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Matthews, Charlotte Sarah | |||
| 2 | Date/Time of event | Date/Time | Matthews, Charlotte Sarah | |||
| 3 | Latitude of event | Latitude | Matthews, Charlotte Sarah | |||
| 4 | Longitude of event | Longitude | Matthews, Charlotte Sarah | |||
| 5 | Code | Code | Matthews, Charlotte Sarah | Strata | ||
| 6 | Area/locality | Area | Matthews, Charlotte Sarah | |||
| 7 | Station label | Station | Matthews, Charlotte Sarah | |||
| 8 | Trawl headline depth | Trawl headline depth | m | Matthews, Charlotte Sarah | Tow begins | |
| 9 | Trawl headline depth | Trawl headline depth | m | Matthews, Charlotte Sarah | Tow ends | |
| 10 | DEPTH, water | Depth water | m | Matthews, Charlotte Sarah | Calculated average/mean values | Geocode – Considers vertical trawl opening |
| 11 | Specimen number | Spec no | Matthews, Charlotte Sarah | |||
| 12 | Species code | Spec code | Matthews, Charlotte Sarah | MFRI database | ||
| 13 | Species, unique identification | Species UID | Matthews, Charlotte Sarah | Visual observation | ||
| 14 | Species, unique identification (URI) | Species UID (URI) | Matthews, Charlotte Sarah | Visual observation | ||
| 15 | Species, unique identification (Semantic URI) | Species UID (Semantic URI) | Matthews, Charlotte Sarah | Visual observation | ||
| 16 | Age | Age | a | Matthews, Charlotte Sarah | Otolith reader | |
| 17 | Otolith, comment | Otolith | Matthews, Charlotte Sarah | Otolith reader | Reader 1 | |
| 18 | Otolith, comment | Otolith | Matthews, Charlotte Sarah | Otolith reader | Reader 2 | |
| 19 | Otolith area | Otolith area | mm2 | Matthews, Charlotte Sarah | Particle analysis, NIH, ImageJ | |
| 20 | Otolith, length | Otolith l | mm | Matthews, Charlotte Sarah | Particle analysis, NIH, ImageJ | |
| 21 | Otolith, width | Otolith w | mm | Matthews, Charlotte Sarah | Particle analysis, NIH, ImageJ | |
| 22 | Fish, frozen mass | Fish frozen m | g | Matthews, Charlotte Sarah | Fish, wet weighted | |
| 23 | Fish, wet mass | Fish wm | g | Matthews, Charlotte Sarah | Fish, wet weighted | |
| 24 | Fish, fork length | Fish f l | mm | Matthews, Charlotte Sarah | Fish measuring board | |
| 25 | Fish, standard length | Fish SL | mm | Matthews, Charlotte Sarah | Fish measuring board | |
| 26 | Fish, total length | Fish TL | mm | Matthews, Charlotte Sarah | Fish measuring board | |
| 27 | Fish, gutted, mass | Gutted m | g | Matthews, Charlotte Sarah | Fish, wet weighted | |
| 28 | Image, specimens | IMAGE spec | Matthews, Charlotte Sarah | Stereo microscope, Leica, MZ6; coupled with integrated camera, Leica, IC90 E | ||
| 29 | Image, specimens (Media Type) | IMAGE spec (Type) | Matthews, Charlotte Sarah | Stereo microscope, Leica, MZ6; coupled with integrated camera, Leica, IC90 E | ||
| 30 | Image, specimens (File Size) | IMAGE spec (Size) | Bytes | Matthews, Charlotte Sarah | Stereo microscope, Leica, MZ6; coupled with integrated camera, Leica, IC90 E | |
| 31 | Image, specimens (MD5 Hash) | IMAGE spec (Hash) | Matthews, Charlotte Sarah | Stereo microscope, Leica, MZ6; coupled with integrated camera, Leica, IC90 E |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 3 (ProcLevel3)
Size:
1675 data points