Quantitative Invertebrate megabenthic data from the Nansen Legacy project collected in 2018 cruise JC2-1 with bottom Campelen trawl from R/V Kronprins Haakon.

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Description

Mega-benthos was sampled from the seabed by the Nansen Legacy joint cruise 1-2, on R/V Kronprins Haakon, 6-23 August 2018 (Cruise 2018707). A Campelen 1800 bottom trawl was used after rigged with rock-hopper ground gear and towed on double warps. The mesh size was 80 mm (stretched) in the front and 16–22 mm in the cod end. The horizontal opening was 11.7 m, and the vertical opening 4 –5 m. The trawl configuration and bottom contact was monitored remotely by SCANMAR trawl sensors. The standard procedure is to tow 15 min after the trawl had contacted the bottom with towing speed of 3 knots, equivalent to a towing distance of 0.75 nautical miles (1.4 km) during a 15 min tow. The trawl settings allow the capture and retention of small-sized fish and the largest benthos (benthic megafauna) from the seabed. In addition, the trawl may also be contaminated by organisms entering the trawl when it is lowered or heaved. The sample was sorted, and each benthos taxon was counted and weighted (i.e., biomass is wet mass) and identified to closest possible taxa onboard the ship. The count of individuals per species/taxa in the trawl (Tot abun) and the wet-weight of the individuals per species/taxa in the trawl (Tot weight (kg)) was recorded. A total of 100 taxa (14 phyla, 28 taxonomic groups), were recorded with 30-46 taxa at each of the five stations. A total of 193 kg mega-benthos was collected with 15 to 88 kg wet weight per station. A total of 40.661 individuals were collected with 2.219 to 18.086 individuals per station. The hauls were standardized to a fixed sampling effort of one nautical mile: abundance per species/taxon as number of individuals per nautical mile and biomass per species/taxon as kg wet weight per nautical mile.

Enregistrements de données

Les données de cette ressource données d'échantillonnage ont été publiées sous forme dune Archive Darwin Core (Darwin Core Archive ou DwC-A), le format standard pour partager des données de biodiversité en tant quensemble dun ou plusieurs tableurs de données. Le tableur de données du cœur de standard (core) contient 199 enregistrements.

2 tableurs de données dextension existent également. Un enregistrement dextension fournit des informations supplémentaires sur un enregistrement du cœur de standard (core). Le nombre denregistrements dans chaque tableur de données dextension est illustré ci-dessous.

199

796

199

Cet IPT archive les données et sert donc de dépôt de données. Les données et métadonnées de la ressource sont disponibles pour téléchargement dans la section téléchargements. Le tableau des versions liste les autres versions de chaque ressource rendues disponibles de façon publique et permet de tracer les modifications apportées à la ressource au fil du temps.

Versions

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Comment citer

Les chercheurs doivent citer cette ressource comme suit:

Jørgensen L L, Bluhm B, Descoteaux R, Åstrøm E (2024). Quantitative Invertebrate megabenthic data from the Nansen Legacy project collected in 2018 cruise JC2-1 with bottom Campelen trawl from R/V Kronprins Haakon.. Version 1.10. The Nansen Legacy Project. Samplingevent dataset. DOI: 10.21335/NMDC-2066713873

Droits

Les chercheurs doivent respecter la déclaration de droits suivante:

L’éditeur et détenteur des droits de cette ressource est The Nansen Legacy Project. Ce travail est sous licence Creative Commons Attribution (CC-BY) 4.0.

Enregistrement GBIF

Cette ressource a été enregistrée sur le portail GBIF, et possède lUUID GBIF suivante : dcfa7cc5-7f7d-40e6-af72-d92791aee08a. The Nansen Legacy Project publie cette ressource, et est enregistré dans le GBIF comme éditeur de données avec lapprobation du GBIF Norway.

Mots-clé

Occurrence; Megabenthos; trawl; invertebrates; Barents Sea; Observation

Contacts

Lis L. Jørgensen

Créateur ●
Personne De Contact ●
Chercheur Principal

Researcher

Institute of Marine Research

Tromsø

lis.lindal.joergensen@hi.no

Bodil Bluhm

Créateur

Professor

UiT The Arctic University of Norway

Tromsø

bodil.bluhm@uit.no

Raphaelle Descoteaux

Créateur

PhD student (at that time)

UiT The Arctic University of Norway

Tromsø

Raphaelle.descoteaux@uit.no

Emmelie Åstrøm

Créateur

Post-Doc (at that time)

UiT The Arctic University of Norway

Tromsø

emmelie.astrom@gmail.com

Couverture géographique

Mega-benthos was sampled from the seabed by the Nansen Legacy joint cruise 1-2, on R/V Kronprins Haakon, 6-23 August 2018 (Cruise 2018707) in the northern Barents Sea.

Enveloppe géographique	Sud Ouest [76,024, 31,141], Nord Est [80,514, 34,251]

Couverture taxonomique

Pas de description disponible

Kingdom	Chromista, Animalia
Phylum	Arthropoda, Nemertea, Annelida, Chordata, Echinodermata, Mollusca, Porifera, Platyhelminthes, Ochrophyta, Bryozoa, Cnidaria
Class	Holothuroidea, Hydrozoa, Polychaeta, Hexacorallia, Phaeophyceae, Bivalvia, Ascidiacea, Octocorallia, Pycnogonida, Gastropoda, Demospongiae, Echinoidea, Scyphozoa, Cephalopoda, Ophiuroidea, Malacostraca, Asteroidea, Crinoidea
Order	Nudibranchia, Cardiida, Amphipoda, Ophiurida, Decapoda, Zoantharia, Aplousobranchia, Phlebobranchia, Coronatae, Dendrochirotida, Apodida, Carditida, Velatida, Tetractinellida, Sepiida, Valvatida, Spinulosida, Euphausiacea, Ophiacanthida, Sipuncula, Ophioscolecida, Arcida, Suberitida, Semaeostomeae, Trochida, Neogastropoda, Molpadida, Polymastiida, Cephalaspidea, Pantopoda, Phyllodocida, Forcipulatida, Malacalcyonacea, Echiuroidea, Littorinimorpha, Eunicida, Actiniaria, Axinellida, Paxillosida, Euryalida, Comatulida, Terebellida, Amphilepidida, Leptothecata, Camarodonta, Octopoda, Isopoda
Family	Pterasteridae, Bathypolypodidae, Arcidae, Epizoanthidae, Paguridae, Nymphonidae, Gorgonocephalidae, Thoridae, Ascidiidae, Margaritidae, Polycitoridae, Nephtheidae, Euphausiidae, Onuphidae, Chaetopteridae, Myriotrochidae, Polymastiidae, Asteriidae, Bonelliidae, Uristidae, Cyaneidae, Epimeriidae, Sepiolidae, Suberitidae, Periphyllidae, Ophiuridae, Colidae, Cardiidae, Hormathiidae, Dendronotidae, Benthopectinidae, Chaetiliidae, Buccinidae, Golfingiidae, Goniasteridae, Ophiacanthidae, Poraniidae, Stegocephalidae, Pectinariidae, Echinasteridae, Pandalidae, Ampharetidae, Antedonidae, Axinellidae, Ophioscolecidae, Psolidae, Velutinidae, Crangonidae, Polynoidae, Laodiceidae, Theneidae, Cuspidariidae, Solasteridae, Didemnidae, Ophiopyrgidae, Alcyoniidae, Astartidae, Ctenodiscidae, Terebellidae, Naticidae, Laonidae, Molpadiidae, Strongylocentrotidae, Flabelligeridae, Ophiopholidae, Astropectinidae

Données sur le projet

The Nansen Legacy is a novel and holistic Arctic research project providing integrated scientific knowledge on the rapidly changing marine climate and ecosystem. A new knowledge base is required to facilitate a sustainable management of the northern Barents Sea and adjacent Arctic Basin through the 21st century.

Titre	The Nansen Legacy project
Identifiant	AeN
Financement	This study was funded by the Research Council of Norway through the project The Nansen Legacy (RCN # 276730).
Description du domaine détude / de recherche	Northwestern Barents Sea https://arvenetternansen.com/the-barents-sea/
Description du design	Nansen Legacy goals: https://arvenetternansen.com/our-goals/

Méthodes déchantillonnage

During this cruise, we sampled epibenthos and demersal fish at five stations with a Campelen 1800 trawl. This data set contains the epibenthos data. The trawl has a mesh size of 80 mm in the wings and 16-22 mm in the cod end and was deployed for 15 min at the seafloor at a target speed of ca. 3 kn. The target net opening is ca. 11,7 m horizontal and 4-5 m vertical.

Etendue de létude	Northern Barents Sea shelf

Description des étapes de la méthode:

The trawl was deployed at ca. 1 m s-1 wire speed, and after 15 min haul at bottom it was emptied into the chute of RV Kronprins Haakon that leads to a sorting table. Species from the catches were sorted there and identified to the highest taxonomic level possible by the onboard team and supported by a photographic trawl guide compiled by L. Jørgensen based on years of Barents Sea Ecosystem Cruise surveys by the Institute of Marine Research with taxonomic expertise. All individuals were enumerated and weighed by taxon. Data are reported as count and wet weight (kg) per taxon per haul, as well as per nautical mile. Context and first results are in the cruise report (Ingvaldsen et al. 2020, https://doi.org/10.7557/nlrs.5628). Details on sampling are in the protocol book version 1 View of Sampling Protocols (https://doi.org/10.7557/nlrs.5715 ) and generally follow the Institute of Marine Research’s trawl protocol.

Métadonnées additionnelles

Identifiants alternatifs	dcfa7cc5-7f7d-40e6-af72-d92791aee08a
	https://ipt.gbif.no/resource?r=megabenthosjc12