Descripción
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.
Registros
Los datos en este recurso de evento de muestreo han sido publicados como Archivo Darwin Core(DwC-A), el cual es un formato estándar para compartir datos de biodiversidad como un conjunto de una o más tablas de datos. La tabla de datos del core contiene 199 registros.
también existen 2 tablas de datos de extensiones. Un registro en una extensión provee información adicional sobre un registro en el core. El número de registros en cada tabla de datos de la extensión se ilustra a continuación.
Este IPT archiva los datos y, por lo tanto, sirve como repositorio de datos. Los datos y los metadatos del recurso están disponibles para su descarga en la sección descargas. La tabla versiones enumera otras versiones del recurso que se han puesto a disposición del público y permite seguir los cambios realizados en el recurso a lo largo del tiempo.
Versiones
La siguiente tabla muestra sólo las versiones publicadas del recurso que son de acceso público.
¿Cómo referenciar?
Los usuarios deben citar este trabajo de la siguiente manera:
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
Derechos
Los usuarios deben respetar los siguientes derechos de uso:
El publicador y propietario de los derechos de este trabajo es The Nansen Legacy Project. Esta obra está bajo una licencia Creative Commons de Atribución/Reconocimiento (CC-BY 4.0).
Registro GBIF
Este recurso ha sido registrado en GBIF con el siguiente UUID: dcfa7cc5-7f7d-40e6-af72-d92791aee08a. The Nansen Legacy Project publica este recurso y está registrado en GBIF como un publicador de datos avalado por GBIF Norway.
Palabras clave
Occurrence; Megabenthos; trawl; invertebrates; Barents Sea; Observation
Contactos
- Originador ●
- Punto De Contacto ●
- Investigador Principal
- Originador
- Originador
Cobertura geográfica
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.
| Coordenadas límite | Latitud Mínima Longitud Mínima [76,024, 31,141], Latitud Máxima Longitud Máxima [80,514, 34,251] |
|---|
Cobertura taxonómica
No hay descripción disponible
| Reino | Chromista, Animalia |
|---|---|
| Filo | 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 |
| Orden | 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 |
| Familia | 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 |
Datos del proyecto
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.
| Título | The Nansen Legacy project |
|---|---|
| Identificador | AeN |
| Fuentes de Financiación | This study was funded by the Research Council of Norway through the project The Nansen Legacy (RCN # 276730). |
| Descripción del área de estudio | Northwestern Barents Sea https://arvenetternansen.com/the-barents-sea/ |
| Descripción del diseño | Nansen Legacy goals: https://arvenetternansen.com/our-goals/ |
Métodos de muestreo
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.
| Área de Estudio | Northern Barents Sea shelf |
|---|
Descripción de la metodología paso a paso:
- 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.
Metadatos adicionales
| Identificadores alternativos | dcfa7cc5-7f7d-40e6-af72-d92791aee08a |
|---|---|
| https://ipt.gbif.no/resource?r=megabenthosjc12 |