Olivar, M Pilar; Hulley, P Alexander; Castellón, Arturo; López, Cristina; Tuset, Victor M; Contreras, Tabit (2021): Abundance of mesopelagic fish through the water column and diel patterns in the tropical and equatorial Atlantic [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.927991
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
This file contains data on numerical abundance of mesopelagic fishes collected in April 2015 across the tropical and equatorial Atlantic. Twelve stations were visited day and night, from the oligotrophic region close to the Brazilian coast to the more productive region off the western African coast. Hauls were performed with a scientific midwater trawl, the Mesopelagos (designed by Meillat, 2012), which works with a single traction cable. The gear consists of graded-mesh netting starting with 30 mm and ending with 4 mm. At the end of the net, a multi-sampler (designed for the present investigation by one of the co-authors, A. Castellón-CSIC) was installed to obtain samples from 5 different depth layers of the water column. For some stations, where lots of gelatinous organisms, or Sargassum weed occurred, the system could not work and the data presented integrates the water column from 800 m to the surface. The depth of the net was controlled by a SCANMAR system. Samples were identified on board or frozen for a later identification in the laboratory. These data were obtained within the project: "Migrants and Active Flux In the Atlantic Ocean, financed by the Spanish Ministerio de Ciencia e Innovación CTM2012-39587-C04.
Related to:
Olivar, M Pilar; Contreras, Tabit; Hulley, P Alexander; López, Cristina; Tuset, Victor M; Castellón, Arturo (2021): Abundance of early stages of mesopelagic fish through the water column and diel patterns in the tropical and equatorial Atlantic. PANGAEA, https://doi.org/10.1594/PANGAEA.928080
Olivar, M Pilar; Hulley, P Alexander; Castellón, Arturo; Emelianov, Mikhail; López, Cristina; Tuset, Victor M; Contreras, Tabit; Molí, Balbina (2017): Mesopelagic fishes across the tropical and equatorial Atlantic: Biogeographical and vertical patterns. Progress in Oceanography, 151, 116-137, https://doi.org/10.1016/j.pocean.2016.12.001
Further details:
Carpenter, Kent E; De Angelis, Nicoletta (2016): The living marine resources of the Eastern Central Atlantic. Volume 3: Bony fishes, part 1 (Elopiformes-Scorpaeniformes). FAO, Rome, FAO Species Identification Guide for Fishery Purposes, 3, 1511-2342
Hernández-León, Santiago; UTM-CSIC (2018): MAFIA Cruise, RV Hespérides. UTM-CSIC, https://doi.org/10.20351/29HE20150403
Project(s):
Funding:
Ministerio de Ciencia e Innovación (MICINN), grant/award no. CTM2012-39587-C04: Migrants and Active Flux In the Atlantic Ocean
Coverage:
Median Latitude: 8.694352 * Median Longitude: -23.833155 * South-bound Latitude: -13.131110 * West-bound Longitude: -34.050830 * North-bound Latitude: 25.429420 * East-bound Longitude: -17.328120
Date/Time Start: 2015-04-05T01:32:00 * Date/Time End: 2015-04-27T22:56:00
Minimum DEPTH, water: 0 m * Maximum DEPTH, water: 1000 m
Event(s):
MAFIA_PEL_1D * Latitude Start: -13.121670 * Longitude Start: -34.050830 * Latitude End: -13.131110 * Longitude End: -33.971110 * Date/Time Start: 2015-04-05T18:34:00 * Date/Time End: 2015-04-05T19:11:00 * Elevation: -4452.0 m * Mesh size: 4 mm * Location: Central Atlantic * Campaign: MAFIA * Basis: Hespérides * Method/Device: Midwater trawl, Mesopelagos (Meillat, 2012) (Mesopelagos)
MAFIA_PEL_1N * Latitude Start: -13.111860 * Longitude Start: -34.013290 * Latitude End: -13.113780 * Longitude End: -34.031280 * Date/Time Start: 2015-04-05T01:32:00 * Date/Time End: 2015-04-05T02:22:00 * Elevation: -4452.0 m * Mesh size: 4 mm * Location: Central Atlantic * Campaign: MAFIA * Basis: Hespérides * Method/Device: Midwater trawl, Mesopelagos (Meillat, 2012) (Mesopelagos)
MAFIA_PEL_3D * Latitude Start: -6.542850 * Longitude Start: -30.092700 * Latitude End: -6.488060 * Longitude End: -30.007030 * Date/Time Start: 2015-04-09T12:48:00 * Date/Time End: 2015-04-09T13:53:00 * Elevation: -5000.0 m * Mesh size: 4 mm * Location: Central Atlantic * Campaign: MAFIA * Basis: Hespérides * Method/Device: Midwater trawl, Mesopelagos (Meillat, 2012) (Mesopelagos)
Comment:
When specimens were damaged and identification could not be made with absolute certainty, a “?” was included in front of the species name.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Olivar, M Pilar | |||
| 2 | Identification | ID | Olivar, M Pilar | haul | ||
| 3 | Date/time start | Date/time start | Olivar, M Pilar | |||
| 4 | Date/time end | Date/time end | Olivar, M Pilar | |||
| 5 | Latitude of event | Latitude | Olivar, M Pilar | |||
| 6 | Longitude of event | Longitude | Olivar, M Pilar | |||
| 7 | Latitude of event 2 | Latitude 2 | Olivar, M Pilar | |||
| 8 | Longitude of event 2 | Longitude 2 | Olivar, M Pilar | |||
| 9 | Code | Code | Olivar, M Pilar | haul layer | ||
| 10 | Light mode | L mode | Olivar, M Pilar | |||
| 11 | Depth, bathymetric | Bathy depth | m | Olivar, M Pilar | ||
| 12 | DEPTH, water | Depth water | m | Olivar, M Pilar | Geocode – min | |
| 13 | DEPTH, water | Depth water | m | Olivar, M Pilar | Geocode – max | |
| 14 | Towing speed | Towing speed | kn | Olivar, M Pilar | ||
| 15 | Net, mouth area, effective | Net mouth area eff | m2 | Olivar, M Pilar | ||
| 16 | Water volume, filtered | Vol filtered | m3 | Olivar, M Pilar | Calculated | |
| 17 | Life stage | Life stage | Olivar, M Pilar | Visual identification (VID) | ||
| 18 | Order | Order | Olivar, M Pilar | Visual identification (VID) | ||
| 19 | Family | Family | Olivar, M Pilar | Visual identification (VID) | ||
| 20 | Taxon/taxa | Taxa | Olivar, M Pilar | Visual identification (VID) | ||
| 21 | Number of individuals | Ind No | # | Olivar, M Pilar | Counting, visual |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
17356 data points
Download Data
View dataset as HTML (shows only first 2000 rows)