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

Registro biológico Observación
Última versión publicado por The University Centre in Svalbard el nov 3, 2025 The University Centre in Svalbard
Fecha de publicación:
3 de noviembre de 2025
Licencia:
CC-BY 4.0

Descargue la última versión de los datos como un Archivo Darwin Core (DwC-A) o los metadatos como EML o RTF:

Datos como un archivo DwC-A descargar 57 registros en Inglés (7 KB) - Frecuencia de actualización: no planeado
Metadatos como un archivo EML descargar en Inglés (12 KB)
Metadatos como un archivo RTF descargar en Inglés (11 KB)

Descripción

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. 

Registros

Los datos en este recurso de registros biológicos 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 57 registros.

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:

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

Derechos

Los usuarios deben respetar los siguientes derechos de uso:

El publicador y propietario de los derechos de este trabajo es The University Centre in Svalbard. 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: 139818b8-f6de-446d-a4e0-32b98c83c0d5.  The University Centre in Svalbard publica este recurso y está registrado en GBIF como un publicador de datos avalado por GBIF Norway.

Palabras clave

Occurrence; Observation

Contactos

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

Cobertura geográfica

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

Coordenadas límite Latitud Mínima Longitud Mínima [68,157, 10,466], Latitud Máxima Longitud Máxima [68,168, 10,472]

Datos del proyecto

No hay descripción disponible

Título Arctic Submarine Groundwater Discharge (Arctic SGD)
Fuentes de Financiación 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).

Personas asociadas al proyecto:

Arunima Sen
  • Propietario
Beata Szymczycha
  • Investigador Principal
Wei Li Hong
  • Propietario

Métodos de muestreo

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.

Área de Estudio Methane seeps in two canyons on the continental slope off Lofoten-Vesterålen (northern Norway)

Descripción de la metodología paso a paso:

  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.

Metadatos adicionales

Identificadores alternativos 139818b8-f6de-446d-a4e0-32b98c83c0d5
https://ipt.gbif.no/resource?r=epiimegabenthos_lofoten-vesteralen_canyon_seeps