Epimegabenthos based on seafloor georeferenced mosaics of the Lofoten-Vesterålen canyon seeps

Occurrence Observation
最新バージョン The University Centre in Svalbard により出版 11月 3, 2025 The University Centre in Svalbard
公開日:
2025年11月3日
ライセンス:
CC-BY 4.0

DwC-A形式のリソース データまたは EML / RTF 形式のリソース メタデータの最新バージョンをダウンロード：

DwC ファイルとしてのデータ ダウンロード 57 レコード English で (7 KB) - 更新頻度: not planned
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説明

This dataset consists of all the epimegabenthic fauna marked and enumerated from five seafloor georeferenced image mosaics from two canyons with methane seep conditions on the continental slope off the Lofoten-Vesterålen archipelago of northern Norway. Two of the mosaics are from the inner part of the seep from the southern of the two canyons, one mosaic is from the inner part of the seep from the northern canyon and three mosaics are from the edges of the seep from the northern canyon. Videos of the seafloor were obtained with the the remotely operated vehicle (ROV) Ægir from the research vessel Kronprins Haakon, maintaining an altitude of between 1 and 1.5 m. Images were extracted every 3 seconds via the free software ffmpeg and using the images and their associated navigation data, georeferenced mosaics were generated with Agisoft's Metashape software. The mosaics cover areas betweeen 133 m2 and 400 m2 . The mosaics were inputted into Arc Desktop and using the Editor tool, all fauna were identified, marked and enumerated. All individuals were marked to obtain numbers for each taxon. Colonial or encrusting animals were outlined to obtain areal coverage. Identifications were made to the lowest possible level which was species in many cases, but only phylum in some cases. The faunal data from the two mosaics of inner parts of the seep in the southern canyon were used in the publication by Sen et al. 2019 'Atypical biological features of a new cold seep site on the Lofoten-Vesterålen continental margin (northern Norway) in Scientific Reports. The other mosaics are used in a publication by Sen et al. on communities at the edges of seeps. 

データ レコード

この オカレンス（観察データと標本) 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、57 レコードが含まれています。

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。:

Sen A, Sevin B, Kotliarov A, Hong W L, Szymczycha B, Diak M, Lepland A, Knies J (2025). Epimegabenthos based on seafloor georeferenced mosaics of the Lofoten-Vesterålen canyon seeps. Version 1.2. The University Centre in Svalbard. Occurrence dataset. https://ipt.gbif.no/resource?r=epiimegabenthos_lofoten-vesteralen_canyon_seeps&v=1.2

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。:

パブリッシャーとライセンス保持者権利者は The University Centre in Svalbard。 This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License.

GBIF登録

このリソースをはGBIF と登録されており GBIF UUID: 139818b8-f6de-446d-a4e0-32b98c83c0d5が割り当てられています。   GBIF Norway によって承認されたデータ パブリッシャーとして GBIF に登録されているThe University Centre in Svalbard が、このリソースをパブリッシュしました。

キーワード

Occurrence; Observation

連絡先

Arunima Sen
  • 最初のデータ採集者 ●
  • 連絡先
  • Associate Professor
The University Centre in Svalbard (UNIS)
Longyearbyen
NO
Brian Sevin
  • 最初のデータ採集者
University of Zagreb
Antonia Kotliarov
  • 最初のデータ採集者
Memorial University of Newfoundland
Wei Li Hong
  • 最初のデータ採集者
Stockholm University
Beata Szymczycha
  • 最初のデータ採集者
Institute of Oceanology Polish Academy of Sciences (IOPAN)
Magdalena Diak
  • 最初のデータ採集者
Institute of Oceanology Polish Academy of Sciences (IOPAN)
Aivo Lepland
  • 最初のデータ採集者
Geological Survey of Norway (NGU)
Jochen Knies
  • 最初のデータ採集者
Norwegian Geological Survey (NGU), iC3: Centre for ice, Cryosphere, Carbon and Climate

地理的範囲

Methane seep areas within two canyons on the continental slope off Lofoten-Vesterålen (northern Norway)

座標（緯度経度） 南 西 [68.157, 10.466], 北 東 [68.168, 10.472]

プロジェクトデータ

説明がありません

タイトル Arctic Submarine Groundwater Discharge (Arctic SGD)
ファンデイング Arctic SGD (Submarine groundwater discharge) project (The Norwegian Financial Mechanism 2014-2021, project number 019/34/H/ ST10/00645 and 2019/34/H/ST10/00504).

プロジェクトに携わる要員:

Arunima Sen
  • データ所有者
Beata Szymczycha
  • 研究代表者
Wei Li Hong
  • データ所有者

収集方法

Using the remotely operated vehicle (ROV) Ægir from the research vessel Kronprins Haakon, video of the seafloor was recorded, maintaining an altitude of about 1-1.5 m. The HD video camera of the ROV was facing directly downwards (perpendicular to the seafloor) for the imaging process. Video acquisition was performed in a lawn-mower pattern, ensuring at least 25% overlap between adjacent lines. Images were extracted from the video every 3 seconds using the free software, ffmpeg. Navigation coordinates for each image were obtained from the ROV's track. These images were stitched together to create a single, composite georeferenced image (mosaic) of the seafloor. For this, structure-from-motion photogrammetry processing was conducted using Agisoft Metashape. Five digital models were constructed in total, each covering hundreds of m². The georeferenced mosaics were imported into ArcMap Desktop and all visible fauna were marked with the Editor tool. Individual organisms were marked as points (point feature class). Colonial or encrusting organisms were outlined to get areal coverages (polygon feature classes). Identification was done to lowest taxonomic level as possible, which was species in some cases, but often reliable identification was limited to higher levels such as genus or family and in certain cases, only phylum level.

Study Extent Methane seeps in two canyons on the continental slope off Lofoten-Vesterålen (northern Norway)

Method step description:

  1. Video imaging of the seafloor was conducted via the downward facing HD camera on the ROV. Overlap was maintained between adjacent video lines. Images were extracted from the video every three seconds and in combination with the corresponding navigation data for the images, a single, composite, georeferenced image (mosaic) was created via Agisoft's Metashape software. Five mosaics were generated. The mosaics were inputted into ArcMap Desktop and all visible features and fauna were marked and enumerated.

追加のメタデータ

代替識別子 139818b8-f6de-446d-a4e0-32b98c83c0d5
https://ipt.gbif.no/resource?r=epiimegabenthos_lofoten-vesteralen_canyon_seeps