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

Occurrence Observation
最新版本 published by Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node on 7月 24, 2026 Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node
發布日期:
2026年7月24日
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CC-BY 4.0

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說明

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.

資料紀錄

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如何引用

研究者應依照以下指示引用此資源。:

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

權利

研究者應尊重以下權利聲明。:

此資料的發布者及權利單位為 Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node。 This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License.

GBIF 註冊

此資源尚未向GBIF註冊

關鍵字

Occurrence; Observation

聯絡資訊

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

地理涵蓋範圍

Clarion-Clipperton Zone

界定座標範圍 緯度南界 經度西界 [4.888, -153.744], 緯度北界 經度東界 [11.295, -141.681]

時間涵蓋範圍

起始日期 / 結束日期 2018-05-25 / 2018-06-10

取樣方法

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).

研究範圍 Clarion-Clipperton Zone

方法步驟描述:

  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.

引用文獻

  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

額外的詮釋資料

marine, harvested by iOBIS

致謝