説明
Mega-benthos was sampled from the seabed by the AeN join 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 is 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 horizontal opening was 17 m, and the vertical opening was 4 m. The mesh size was 80 mm (stretched) in the front and 24 mm in the cod end, allowing 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 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 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.
データ レコード
この サンプリング イベント リソース内のデータは、1 つまたは複数のデータ テーブルとして生物多様性データを共有するための標準化された形式であるダーウィン コア アーカイブ (DwC-A) として公開されています。 コア データ テーブルには、199 レコードが含まれています。
拡張データ テーブルは2 件存在しています。拡張レコードは、コアのレコードについての追加情報を提供するものです。 各拡張データ テーブル内のレコード数を以下に示します。
この IPT はデータをアーカイブし、データ リポジトリとして機能します。データとリソースのメタデータは、 ダウンロード セクションからダウンロードできます。 バージョン テーブルから公開可能な他のバージョンを閲覧でき、リソースに加えられた変更を知ることができます。
バージョン
次の表は、公にアクセス可能な公開バージョンのリソースのみ表示しています。
引用方法
研究者はこの研究内容を以下のように引用する必要があります。:
Jørgensen L L, Bluhm B, Descoteaux R, Åstrøm E, Heim S, Holm E (2024). Quantitative Invertebrate megabenthic data from the AeN project collected in 2018 cruise JC2-1 with bottom Campelen trawl from R/V Kronprins Haakon.. Version 1.0. The Nansen Legacy Project. Samplingevent dataset. DOI: 10.21335/NMDC-2066713873
権利
研究者は権利に関する下記ステートメントを尊重する必要があります。:
This work is licensed under a Creative Commons Attribution Non Commercial (CC-BY-NC 4.0) License.
GBIF登録
このリソースは GBIF に登録されていません。
キーワード
Occurrence; Megabenthos; trawl; invertebrates; Barents Sea
連絡先
- 最初のデータ採集者 ●
- 連絡先 ●
- 研究代表者
- 最初のデータ採集者
- 最初のデータ採集者
- 最初のデータ採集者
地理的範囲
Mega-benthos was sampled from the seabed by the AeN join cruise 1-2, on R/V Kronprins Haakon, 6-23 August 2018 (Cruise 2018707) in the northern Barents Sea.
| 座標（緯度経度） | 南 西 [-90, -180], 北 東 [90, 180] |
|---|
生物分類学的範囲
説明がありません
| Kingdom | Chromista, Animalia |
|---|---|
| Phylum | Arthropoda, Nemertea, Annelida, Chordata, Echinodermata, Mollusca, Porifera, Platyhelminthes, Ochrophyta, Cnidaria, Bryozoa |
| 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 |
プロジェクトデータ
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.
| タイトル | The Nansen Legacy project |
|---|---|
| 識別子 | AeN |
| ファンデイング | This study was funded by the Research Council of Norway through the project The Nansen Legacy (RCN # 276730). |
| Study Area Description | Northwestern Barents Sea https://arvenetternansen.com/the-barents-sea/ |
| 研究の意図、目的、背景など（デザイン） | Our study goals were to characterize sea ice related biota including uni- and multicellular heterotrophs over the entire seasonal cycle, along a latitudinal gradient in the northwestern Barents Sea. Nansen Legacy goals: https://arvenetternansen.com/our-goals/ |
収集方法
During this cruise, we sampled epibenthos and 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 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. 17 m horizontal and 4 m vertical.
| Study Extent | Northern Barents Sea shelf |
|---|
Method step description:
- 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 Ecosystem Cruise surveys 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 (uit.no) and generally follow the Institute of Marine Research’s trawl protocol.