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

Occurrence Observation
Versão mais recente published by Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node on jul. 24, 2026 Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node
Publication date:
24 de julho de 2026
Licença:
CC-BY 4.0

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Descrição

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.

Registros de Dados

Os dados deste recurso de ocorrência foram publicados como um Darwin Core Archive (DwC-A), que é o formato padronizado para compartilhamento de dados de biodiversidade como um conjunto de uma ou mais tabelas de dados. A tabela de dados do núcleo contém 55 registros.

This IPT archives the data and thus serves as the data repository. The data and resource metadata are available for download in the downloads section. The versions table lists other versions of the resource that have been made publicly available and allows tracking changes made to the resource over time.

Versões

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Como citar

Pesquisadores deveriam citar esta obra da seguinte maneira:

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

Direitos

Pesquisadores devem respeitar a seguinte declaração de direitos:

O editor e o detentor dos direitos deste trabalho é Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node. This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License.

GBIF Registration

Este recurso não foi registrado pelo GBIF

Palavras-chave

Occurrence; Observation

Contatos

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

Cobertura Geográfica

Clarion-Clipperton Zone

Coordenadas delimitadoras Sul Oeste [4,888, -153,744], Norte Leste [11,295, -141,681]

Cobertura Temporal

Data Inicial / Data final 2018-05-25 / 2018-06-10

Métodos de Amostragem

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).

Área de Estudo Clarion-Clipperton Zone

Descrição dos passos do método:

  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.

Citações bibliográficas

  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

Metadados Adicionais

marine, harvested by iOBIS

Acknowledgements