Description
Occurrences of marine bottom organisms at
20–500 m depth in the Froan-Sularevet area outside Frøya in Trøndelag, Norway from 30
August – 9 September 2025.
The study area is in or near a proposed marine protected area:
https://faktaark.naturbase.no/?id=VP00001512
The data was collected by Akvaplan-niva during an underwater video survey of 18 transects with a remotely
operated diving vessel (ROV).
Taxonomic identification was done in the field, by an expert in vulnerable marine organisms, from high definition video from the ROV.
Depth and position was obtained via the ROV's navigation software (EIVA NaviPac) and later corrected.
When possible, each individual organism was identified and the number of organisms present in one second of video is reported in individualCount.
Some organisms, were uncountable using visual inspection and are recorded as present with no individual count.
These are coral <pre>Clavularia borealis</pre>, kelp species <pre>Laminaria hyperborea</pre>, <pre>Saccharina latissima</pre>, and stony corals.
<pre>Desmophyllum pertusum</pre>, and <pre>Madrepora oculata</pre>.
Taxonomy is validated against World Register of Marine Species (WoRMS) using GBIF Species API.
The final Darwin Core occurrence data is validated against GBIF data validator service prior to publishing.
Contributions
Jesper Hansen: principal investigator, taxonomic identification, initial data creation.
Conrad Helgeland: data processor, Darwin Core, data validation, GBIF-publishing.
Enregistrements de données
Les données de cette ressource occurrence ont été publiées sous forme d'une Archive Darwin Core (Darwin Core Archive ou DwC-A), le format standard pour partager des données de biodiversité en tant qu'ensemble d'un ou plusieurs tableurs de données. Le tableur de données du cœur de standard (core) contient 22 034 enregistrements.
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
Le tableau ci-dessous n'affiche que les versions publiées de la ressource accessibles publiquement.
Droits
Les chercheurs doivent respecter la déclaration de droits suivante:
L’éditeur et détenteur des droits de cette ressource est Akvaplan-niva. 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 l'UUID GBIF suivante : 18b7c5c7-9814-4dc4-a8aa-833e91969358. Akvaplan-niva publie cette ressource, et est enregistré dans le GBIF comme éditeur de données avec l'approbation du GBIF Norway.
Mots-clé
Occurrence; Observation
Contacts
- Créateur ●
- Personne De Contact
https://orcid.org/0009-0004-7120-717X
Couverture géographique
Froan-Sularevet area, Trøndelag, Norway
| Enveloppe géographique | Sud Ouest [63,876, 8,111], Nord Est [64,202, 9,471] |
|---|
Couverture taxonomique
Pas de description disponible
| Kingdom | Chromista, Animalia |
|---|---|
| Phylum | Mollusca, Arthropoda, Porifera, Chordata, Ochrophyta, Cnidaria |
| Class | Demospongiae, Hexacorallia, Phaeophyceae, Bivalvia, Octocorallia, Malacostraca, Teleostei |
| Order | Scleractinia, Pectinida, Suberitida, Decapoda, Gadiformes, Polymastiida, Laminariales, Tetractinellida, Malacalcyonacea, Scleralcyonacea, Bubarida, Poecilosclerida, Axinellida, Tethyida, Haplosclerida, Dictyoceratida |
| Family | Primnoidae, Capnellidae, Mycalidae, Coralliidae, Nephropidae, Halichondriidae, Bubaridae, Dictyonellidae, Stylocordylidae, Tethyidae, Madreporidae, Kophobelemnidae, Axinellidae, Dysideidae, Phloeodictyidae, Laminariaceae, Lotidae, Chalinidae, Theneidae, Caryophylliidae, Alcyoniidae, Tetillidae, Ancorinidae, Acanthogorgiidae, Isodictyidae, Funiculinidae, Polymastiidae, Pennatulidae, Protoptilidae, Pectinidae, Microcionidae, Virgulariidae, Clavulariidae, Geodiidae |
Couverture temporelle
| Date de début / Date de fin | 2025-08-30 / 2025-09-09 |
|---|
Données sur le projet
Pas de description disponible
| Titre | Marine protected area Froan - Sularevet |
|---|---|
| Identifiant | https://www.statsforvalteren.no/nb/Trondelag/Miljo-og-klima/Verneomrader/marin-verneplan/froan---sularevet/ |
Les personnes impliquées dans le projet:
Méthodes d'échantillonnage
Human video analysis transects surveyed by remotely operated diving vessel (ROV)
| Etendue de l'étude | 10 field days from 2025-08-30 to 2025-09-09. |
|---|
Description des étapes de la méthode:
- ?
Métadonnées additionnelles
| Remerciements | The study is financed by the County Governor of Trøndelag, see https://www.statsforvalteren.no/nb/Trondelag/Miljo-og-klima/Verneomrader/marin-verneplan/froan---sularevet/ for further details (in Norwegian). |
|---|---|
| Objet | The soft corals within the survey area were distributed across five species of gorgonian sea fans, two species of cauliflower coral, and one species of dead man’s fingers. The gorgonian corals Anthothela grandiflora/Lateothela grandiflora and sea tree (Paragorgia arborea) are both Red-Listed. The largest specimen of sea tree attained a diameter of 170 cm. With a few exceptions, the gorgonians were confined to the reef belt. This included the small species blue horn coral (Clavularia borealis), which is associated with dead coral reef framework and is rarely encountered in coastal waters. The three remaining soft corals were restricted to the shallower marine areas around Froan. There were few locations where the gorgonians formed the habitat type hard-bottom coral forest. Sponges, with 56 097 recorded individuals, constituted the dominant management-relevant taxonomic group in terms of both abundance and species richness on the slope and inward to 40 m depth in the Froan area as well as in the Frohavet. Species richness appears higher than typical for the Norwegian coast. Thirty distinct sponge morphotypes were identified to species or genus level, whereas others could not be identified. The habitat type sponge forest was widespread and encompassed both dense soft-bottom sponge forests characterised by the anchor sponge (Thenea muricata) in the northern Frohavet immediately outside the planning area, as well as several different types of hard-bottom sponge forest within the area. Sea pens were represented by seven species, of which the sea pen Kophobelemnon stelliferum was the most common, while the species Protoptilum thomsonii was the only Red-Listed taxon. The habitat type sea-pen ground was relatively poorly developed and was recorded only in Suladypet; however, it has previously been documented as extensive on the mud bottom north of Suladypet and in Haltendypet. The fish species blue ling (Molva dypterygia), which is Red-Listed as Critically Endangered, was nevertheless observed in relatively dense concentrations in Suladypet. Redfish (Sebastes spp.), among which the common redfish (Sebastes norvegicus) is Red-Listed as Critically Endangered, occurred throughout the area except in the far north, although in most instances species-level identification was not possible. In general, few live king scallops were observed during the survey, and it remains uncertain whether the largest occurrence covered as much as 25 m². |
| Description de la fréquence de mise à jour | Only if errors are found. |
| Identifiants alternatifs | https://ipt.gbif.no/resource?r=froan-sularevet-2025 |