Kennedy, James; Ólafsdóttir, Anna H; Aradóttir, Svandís Eva; Egilsdóttir, Svanhildur; Pampoulie, Christophe: Characteristics of Centrolophus niger collected south of Iceland in July 2017 and July 2021 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.955695 (dataset in review), In: Kennedy, J et al.: Centrolophus niger south of Iceland in July 2017 and July 2021 [dataset bundled publication]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.955698 (dataset in review)
Abstract:
This data set has biological measurements and stomach content analysis for fourteen specimens of Centrolophus niger which were frozen whole at sea during the Icelandic part of the International Ecosystem Summer Survey in Nordic Seas (IESSNS) in July 2017 and July 2021. In 2017, three specimens were collected to confirm species identification by a specialist at home institute. In 2021, all caught specimens were collected for detailed biological study. The C. niger were by-catch in a scientific pelagic ecosystem survey which includes trawling, cod-end mesh size 50 mm, in the surface layer, trawl headline visible in surface and foot rope at approximately 35 m depth. On December 1st, 2021, total weight of specimens was measured frozen and again thawed, thawed 16 hours at 0 °C. Length was measured to the nearest mm, weight to nearest 0.01 g, sex labelled as unidentified when macroscopic examination of gonads was inconclusive, maturity scale was mature, immature, or unidentified when macroscopic examination was inconclusive. Stomach, cut at oesophagus and pyloric caecae, was weighted with prey content intact and after prey was squished out of stomach. Otoliths were collected from each specimen. For detailed information about the surveys see the cruise reports attached to the campaigns. The data is provided by the Marine and Freshwater Research Institute (MFRI) in Iceland.
Supplement to:
Kennedy, James; Ólafsdóttir, Anna H; Aradóttir, Svandís Eva; Egilsdóttir, Svanhildur; Pampoulie, Christophe (in prep.): Biological information on a rare pelagic fish, Centrolophus niger, caught in Icelandic waters: distribution, feeding and otoliths.
Related to:
Ólafsdóttir, Anna H; Pampoulie, Christophe: Fish and invertebrate trawl sampling south and west of Iceland in July 2021. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.942987
Project(s):
Funding:
Coverage:
Median Latitude: 62.916289 * Median Longitude: -19.677481 * South-bound Latitude: 62.671800 * West-bound Longitude: -24.486000 * North-bound Latitude: 63.047500 * East-bound Longitude: -16.386500
Date/Time Start: 2017-07-17T10:53:00 * Date/Time End: 2021-07-21T20:11:00
Minimum DEPTH, water: 13.5 m * Maximum DEPTH, water: 264.0 m
Event(s):
A10-2017_305 * Latitude Start: 62.711000 * Longitude Start: -16.404300 * Latitude End: 62.671800 * Longitude End: -16.399800 * Date/Time Start: 2017-07-17T10:53:00 * Date/Time End: 2017-07-17T11:23:00 * Elevation Start: -1878.0 m * Elevation End: -1878.0 m * Location: Nordic Seas * Campaign: IESSNS_2017 (A10-2017) * Basis: Arni Fridriksson * Method/Device: Multipurpose pelagic trawl - 832 (MULTPELT-832)
A12-2021_327 * Latitude Start: 63.047500 * Longitude Start: -16.406667 * Latitude End: 63.010500 * Longitude End: -16.386500 * Date/Time Start: 2021-07-18T00:06:00 * Date/Time End: 2021-07-18T00:36:00 * Elevation Start: -1531.0 m * Elevation End: -1552.0 m * Location: Nordic Seas * Campaign: IESSNS_2021 (A12-2021) * Basis: Arni Fridriksson * Method/Device: Multipurpose pelagic trawl - 832 (MULTPELT-832)
A12-2021_330 * Latitude Start: 62.713500 * Longitude Start: -17.382167 * Latitude End: 62.714833 * Longitude End: -17.308167 * Date/Time Start: 2021-07-18T19:46:00 * Date/Time End: 2021-07-18T20:16:00 * Elevation Start: -1704.0 m * Elevation End: -1728.0 m * Location: Nordic Seas * Campaign: IESSNS_2021 (A12-2021) * 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 | Kennedy, James | |||
| 2 | Year of observation | Year obs | a AD | Kennedy, James | ||
| 3 | Cruise/expedition | Expedition | Kennedy, James | |||
| 4 | Station label | Station | Kennedy, James | |||
| 5 | Comment | Comment | Kennedy, James | Trawl station type (PTRAWL = surface, DeepTrawl = watercolumn) | ||
| 6 | Depth, bathymetric | Bathy depth | m | Kennedy, James | Trawl in water | |
| 7 | Depth, bathymetric | Bathy depth | m | Kennedy, James | Trawl out of water | |
| 8 | Towing speed | Towing speed | kn | Kennedy, James | At tow depth | |
| 9 | Trawling distance | Trawling dis | nmi | Kennedy, James | At tow depth | |
| 10 | Trawling time | Trawl t | min | Kennedy, James | At tow depth | |
| 11 | Trawl vertical opening | Trawl v open | m | Kennedy, James | At tow depth | |
| 12 | Trawl door horizontal opening | Trawl door h open | m | Kennedy, James | At tow depth | |
| 13 | Trawl headline depth | Trawl headline depth | m | Kennedy, James | Tow begins | |
| 14 | Trawl headline depth | Trawl headline depth | m | Kennedy, James | Tow ends | |
| 15 | Depth, water, top/minimum | Depth water top | m | Kennedy, James | ||
| 16 | Depth, water, bottom/maximum | Depth water bot | m | Kennedy, James | ||
| 17 | DEPTH, water | Depth water | m | Kennedy, James | Calculated average/mean values | Geocode |
| 18 | Mesh size | Mesh size | mm | Kennedy, James | Codend meshsize | |
| 19 | Wire length | Wire length | m | Kennedy, James | Wrap wire length | |
| 20 | Sweeps length | Sweeps l | m | Kennedy, James | ||
| 21 | Temperature, water | Temp | °C | Kennedy, James | At tow depth | |
| 22 | Temperature, water | Temp | °C | Kennedy, James | At 5 m depth from surface | |
| 23 | Temperature, air | TTT | °C | Kennedy, James | At sea level | |
| 24 | Species, unique identification | Species UID | Kennedy, James | Visual identification (VID) | ||
| 25 | Species, unique identification (URI) | Species UID (URI) | Kennedy, James | Visual identification (VID) | ||
| 26 | Species, unique identification (Semantic URI) | Species UID (Semantic URI) | Kennedy, James | Visual identification (VID) | ||
| 27 | Specimen identification | Spec ID | Kennedy, James | |||
| 28 | Centrolophus niger, total length | C. niger TL | cm | Kennedy, James | Fish measuring board | |
| 29 | Centrolophus niger, fork length | C. niger FL | cm | Kennedy, James | Fish measuring board | |
| 30 | Length, standard | l std | cm | Kennedy, James | Fish measuring board | |
| 31 | Wet mass | Wet m | g | Kennedy, James | Fish, wet weighted | frozen |
| 32 | Wet mass | Wet m | g | Kennedy, James | Fish, wet weighted | thawed |
| 33 | Fish, gutted, mass | Gutted m | g | Kennedy, James | Fish, wet weighted | |
| 34 | Liver, mass | Liver m | g | Kennedy, James | Fish, wet weighted | |
| 35 | Sex | Sex | Kennedy, James | Visual identification (VID) | ||
| 36 | Maturation stage | Mat st | Kennedy, James | Visual identification (VID) | ||
| 37 | Otolith | Otolith | # | Kennedy, James | Counted | |
| 38 | Stomach, wet mass | Stom wm | g | Kennedy, James | Fish, wet weighted | |
| 39 | Stomach, wet mass | Stom wm | g | Kennedy, James | Fish, wet weighted | empty |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
490 data points