Benthic megafauna of the western Clarion-Clipperton Zone, Pacific Ocean from the DeepCCZ project, 2018

Occurrence Observation
Dernière version Publié par Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node le juil. 24, 2026 Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node
Date de publication:
24 juillet 2026
Licence:
CC-BY 4.0

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Description

There is a growing interest in the exploitation of deep-sea mineral deposits, particularly on the abyssal seafloor of the central Pacific Clarion-Clipperton Zone (CCZ), which is rich in polymetallic nodules. In order to effectively manage potential exploitation activities, a thorough understanding of the biodiversity, community structure, species ranges, connectivity, and ecosystem functions across a range of scales is needed. The benthic megafauna plays an important role in the functioning of deep-sea ecosystems and represents an important component of the biodiversity. While megafaunal surveys using video and still images have provided insight into CCZ biodiversity, the collection of faunal samples is needed to confirm species identifications to accurately estimate species richness and species ranges, but faunal collections are very rarely carried out. Using a Remotely Operated Vehicle, 55 specimens of benthic megafauna were collected from seamounts and abyssal plains in three Areas of Particular Environmental Interest (APEI 1, APEI 4, and APEI 7) at 3100–5100 m depth in the western CCZ. Using both morphological and molecular evidence, 48 different morphotypes belonging to five phyla were found, only nine referrable to known species, and 39 species potentially new to science. This work highlights the need for detailed taxonomic studies incorporating genetic data, not only within the CCZ, but in other bathyal, abyssal, and hadal regions, as representative genetic reference libraries that could facilitate the generation of species inventories.

Enregistrements de données

Les données de cette ressource occurrence ont été publiées sous forme dune Archive Darwin Core (Darwin Core Archive ou DwC-A), le format standard pour partager des données de biodiversité en tant quensemble dun ou plusieurs tableurs de données. Le tableur de données du cœur de standard (core) contient 55 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 naffiche que les versions publiées de la ressource accessibles publiquement.

Comment citer

Les chercheurs doivent citer cette ressource comme suit:

Bribiesca-Contreras G, Dahlgren T, Amon D, Cairns S, Drennan R, Durden J, Eléaume M, Hosie A, Kremenetskaia A, McQuaid K, O'Hara T, Rabone M, Simon-Lledó E, Smith C, Watling L, Wiklund H, Glover A (2026). Benthic megafauna of the western Clarion-Clipperton Zone, Pacific Ocean from the DeepCCZ project, 2018. Version 1.0. Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node. Occurrence dataset. https://nzobisipt.niwa.co.nz/resource?r=deepccz_benthic&v=1.0

Droits

Les chercheurs doivent respecter la déclaration de droits suivante:

L’éditeur et détenteur des droits de cette ressource est Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node. Ce travail est sous licence Creative Commons Attribution (CC-BY) 4.0.

Enregistrement GBIF

Cette ressource na pas été enregistrée sur le portail GBIF

Mots-clé

Occurrence; Observation

Contacts

Guadalupe Bribiesca-Contreras
  • Fournisseur Des Métadonnées ●
  • Créateur ●
  • Personne De Contact
Life Sciences Department, Natural History Museum
London
GB
Thomas Dahlgren
  • Créateur
University of Gothenburg, Gothenburg, Sweden Norwegian Research Centre, NORCE
Bergen
NO
Diva Amon
  • Créateur
SpeSeas, D’Abadie
TT
Stephen Cairns
  • Créateur
National Museum of Natural History, Smithsonian Institution
Washington DC
US
Regan Drennan
  • Créateur
Life Sciences Department, Natural History Museum
London
GB
Jennifer Durden
  • Créateur
National Oceanography Centre
Southhampton
GB
Marc Eléaume
  • Créateur
Départment Origines et Évolution, Muséum national d’Histoire Naturelle
Paris
FR
Andrew Hosie
  • Créateur
Collections & Research, Western Australia Museum
Perth
AU
Antonina Kremenetskaia
  • Créateur
Shirshov Institute of Oceanology, Russian Academy of Sciences
Moscow
RU
Kirsty McQuaid
  • Créateur
University of Plymouth
Plymouth
GB
Timothy O'Hara
  • Créateur
Museums Victoria
Melbourne
AU
Muriel Rabone
  • Créateur
Life Sciences Department, Natural History Museum
London
GB
Erik Simon-Lledó
  • Créateur
National Oceanography Centre
Southampton
GB
Craig Smith
  • Créateur
University of Hawai’i at Mānoa
Honolulu
US
Les Watling
  • Créateur
University of Hawai’i at Mānoa
Honolulu
US
Helena Wiklund
  • Créateur
University of Gothenburg
Gothenburg
SE
Adrian Glover
  • Créateur
Life Sciences Department, Natural History Museum
London
US

Couverture géographique

Clarion-Clipperton Zone

Enveloppe géographique Sud Ouest [4,888, -153,744], Nord Est [11,295, -141,681]

Couverture temporelle

Date de début / Date de fin 2018-05-25 / 2018-06-10

Méthodes déchantillonnage

Specimens were selected from across as many taxonomic groups as possible, with duplicates of similar morphotypes avoided; thus, the aim was to increase our understanding of megafaunal diversity. A total of 55 specimens were collected during different dives in three APEIs and three different geoforms (abyssal plain, seamount, and seamount slope), 14 specimens were collected from abyssal seafloor in APEI 1; 13 from abyssal seafloor, two from the seamount slope and six from a seamount in APEI 4; and nine from abyssal seafloor and 11 from a seamount in APEI 7. In situ photographs and/or video frame grabs of each specimen were captured, with parallel lasers for scale at 15 cm spacing. Megafaunal specimens were collected with the manipulator (‘Orion’), suction sampler, or push cores, depending on the characteristics of each specimen in order to best preserve morphological characters. Specimens collected with the manipulator were placed into the biobox receptacle, while those collected with the suction sampler were stored in a suction box. Collection data were recorded at the time of capture (e.g., date and time, ROV latitude/longitude, seabed water depth, ROV waypoint name).

Etendue de létude Clarion-Clipperton Zone

Description des étapes de la méthode:

  1. After ROV recovery, specimens were transferred and maintained in cold (2–4 °C), filtered seawater until processed. Following Glover et al. (2015), all specimens were photographed, given a preliminary identification and assigned a unique voucher code (e.g., CCZ_020). A tissue sample was taken from each specimen for downstream molecular analyses, and stored in 95% non-denatured ethanol at -20 °C. Specimens were fixed in 10% borax-buffered formalin and transferred to 70% non-denatured ethanol after 48 h, except for sponges, which were kept frozen at -80 °C. After the expedition, specimens and tissue sub-samples were sent to the University of Hawai’i Manoa. Specimens were archived at the Natural History Museum, London (NHMUK), and the Western Australian Museum (WAM), following taxonomic inspection.

Citations bibliographiques

  1. Bribiesca-Contreras G, Dahlgren TG, Amon DJ et al. Benthic megafauna of the western Clarion-Clipperton Zone, Pacific Ocean. ZooKeys 2022;1113:1–110. 10.3897/zookeys.1113.82172 https://doi.org/10.3897/zookeys.1113.82172

Métadonnées additionnelles

marine, harvested by iOBIS

Remerciements