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  • 1
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    Unknown
    The polychaete fauna of the Clarion-Clipperton Fracture Zone from boxcore samples during SONNE cruise SO239 (2019)
    PANGAEA
    In:  Supplement to: Bonifácio, Paulo; Martínez Arbizu, Pedro; Menot, Lenaick (2020): Alpha and beta diversity patterns of polychaete assemblages across the nodule province of the eastern Clarion-Clipperton Fracture Zone (equatorial Pacific). Biogeosciences, 17(4), 865-886, https://doi.org/10.5194/bg-17-865-2020
    Details
    Publication Date: 2024-02-02
    Description: The dataset contains polychaete abundance data collected from boxcores samples (BC; 0.25 m2) collected in the eastern Clarion Clipperton fracture Zone (northeast Pacific), an area currently being explored for polymetallic nodules. Macrobenthic samples were collected onboard RV Sonne during expedition SO239 in 2015. Four exploration contract areas (BGR, IOM, GSR and Ifremer) and one “Area of Particular Environmental Interest” (APEI#3) were sampled. Between 3 and 8 quantitative box cores were collected in each area. Boxcore samples were sliced in three layers (0-3, 3-5 and 5-10 cm depth) and sieved on a 300 µm mesh. Polychaetes have been counted, sequenced and identified. Identifications were realised based on morphology and DNA (COI, 16S and 18S genes) leading to morphotype in most cases (species-level). DNA sequences are available in Genbank or BOLD databases with their respective codes in this dataset.
    Keywords: Accession number; Area; BC; BC1; BC16; BC19; BC2; BC20; BC21; BC22; BC23; BC24; BC25; BC26; BC28; BC29; BC3; BC30; BC31; BC33; BC34; BC35; BC4; BC5; BC6; BC7; BC8; BC9; Box corer; Comment; Database accession number; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Event label; Identification; JPI Oceans - Ecological Aspects of Deep-Sea Mining; JPIO-MiningImpact; Layer description; Morphotype; North Pacific Ocean; Number of individuals; Sample comment; Sample ID; SO239; SO239_105-1; SO239_106-1; SO239_107-1; SO239_119-1; SO239_12-1; SO239_127-1; SO239_128-1; SO239_137-1; SO239_138-1; SO239_15-1; SO239_159-1; SO239_16-1; SO239_162-1; SO239_169-1; SO239_180-1; SO239_181-1; SO239_182-1; SO239_195-1; SO239_196-1; SO239_203-1; SO239_204-1; SO239_209-1; SO239_21-1; SO239_23-1; SO239_51-1; SO239_57-1; SO239_58-1; SO239_60-1; SO239_88-1; SO239_89-1; SO239_90-1; SO239_94-1; SO239_95-1; SO239_97-1; Sonne_2; Species; Station label
    Type: Dataset
    Format: text/tab-separated-values, 18255 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
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    Polychaete fauna belonging to family Polynoidae of the Clarion-Clipperton Fracture Zone sampled during SONNE cruise SO239 (2021)
    PANGAEA
    Details
    Publication Date: 2024-02-02
    Description: The dataset contains polychaete abundance data belonging to the family Polynoidae sampled using epibenthic sledge, ROV and box corer (BC; 0.25 m2) within the eastern Clarion Clipperton fracture Zone (northeast Pacific), an area currently being explored for polymetallic nodules. Macrobenthic samples were collected onboard RV Sonne during expedition SO239 in 2015. Four exploration contract areas (BGR, IOM, GSR and Ifremer) and one "Area of Particular Environmental Interest" (APEI#3) were sampled. Eight out of twelve epibenthic sledges samples were fully processed. All polynoids heads have been counted, sequenced and identified. Identifications were realized using morphology and DNA (COI, 16S and 18S genes) leading to morphospecies in most cases (species-level). DNA sequences are available in GenBank or BOLD databases with their respective codes in this dataset.
    Keywords: Accession number, genetics; BC; BC24; Box corer; CCZ; Clarion Clipperton Fracture Zone; Database accession number; Date/Time of event; Date/Time of event 2; Deep-sea; DEPTH, sediment/rock; Depth comment; Device type; EBS; EBS1; EBS10; EBS11; EBS12; EBS13; EBS4; EBS5; EBS6; EBS7; EBS8; EBS9; Elevation of event; Elevation of event 2; epibenthic fauna; Epibenthic sledge; Event label; JPI Oceans - Ecological Aspects of Deep-Sea Mining; JPIO-MiningImpact; Latitude of event; Latitude of event 2; Longitude of event; Longitude of event 2; Method/Device of event; Morphotype; nodule; North Pacific Ocean; Number of individuals; Pacific; Polychaeta; Remote operated vehicle; ROV; ROV06; ROV08; ROV09; ROV13; ROV14; ROV15; Sample code/label; Sample ID; scale worms; SO239; SO239_117-1; SO239_131-1; SO239_133-1; SO239_135-1; SO239_138-1; SO239_158-1; SO239_171-1; SO239_189-1; SO239_192-1; SO239_197-1; SO239_200-1; SO239_20-1; SO239_210-1; SO239_212-1; SO239_50-1; SO239_59-1; SO239_81-1; SO239_82-1; SO239_99-1; Sonne_2; Status; Taxon/taxa; Trawling distance; Uniform resource locator/link to reference
    Type: Dataset
    Format: text/tab-separated-values, 3505 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 3
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    Diversity of Deep-Sea Scale-Worms (Annelida, Polynoidae) in the Clarion-Clipperton Fracture Zone (2021)
    Frontiers
    Details
    Publication Date: 2024-02-07
    Description: The polymetallic nodules lying on the seafloor of the Clarion-Clipperton Fracture Zone (CCFZ) represent over 30 billion metric tons of manganese. A single mining operation has potential to directly impact approximately 200 km 2 of the seabed per year. Yet, the biodiversity and functioning of the bentho-demersal ecosystem in the CCFZ remain poorly understood. Recent studies indicate a high species diversity in a food-poor environment, although the area remains poorly sampled. Undersampling is aggravated by a combination of low densities of fauna and high habitat heterogeneity at multiple spatial scales. This study examines the Polynoidae, a diverse family of mobile polychaetes. Sampling with an epibenthic sledge and a remotely operated vehicle was performed during the cruise SO239 within the eastern CCFZ. Five areas under the influence of a sea surface productivity gradient were visited. Specimens were identified using morphology and DNA: (i) to provide a more comprehensive account of polynoid diversity within the CCFZ, (ii) to infer factors potentially driving alpha and beta diversity, and (iii) to test the hypothesis that epibenthic polychaetes have low species turnover and large species range. Patterns of species turnover across the eastern CCFZ were correlated with organic carbon fluxes to the seafloor but there was also a differentiation in the composition of assemblages north and south of the Clarion fracture. In contrast to the previous studies, patterns of alpha taxonomic and phylogenetic diversity both suggest that polynoid assemblages are the most diverse at Area of Particular Environmental Interest no. 3, the most oligotrophic study site, located north of the Clarion fracture. Without ruling out the possibility of sampling bias, the main hypothesis explaining such high diversity is the diversification of polynoid subfamily Macellicephalinae, in response to oligotrophy. We propose that macellicephalins evolved under extremely low food supply conditions through adoption of a semi-pelagic mode of life, which enabled them to colonise new niches at the benthic boundary layer and foster their radiation at great depths.
    Type: Article , PeerReviewed
    Format: text
    Format: archive
    Location Call Number Limitation Availability
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 4
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    Unknown
    Biodiversity, biogeography, and connectivity of polychaetes in the world's largest marine minerals exploration frontier (2023)
    Wiley
    Details
    Publication Date: 2024-02-12
    Description: The abyssal Clarion‐Clipperton Zone (CCZ), Pacific Ocean, is an area of commercial importance owing to the growing interest in mining high‐grade polymetallic nodules at the seafloor for battery metals. Research into the spatial patterns of faunal diversity, composition, and population connectivity is needed to better understand the ecological impacts of potential resource extraction. Here, a DNA taxonomy approach is used to investigate regional‐scale patterns of taxonomic and phylogenetic alpha and beta diversity, and genetic connectivity, of the dominant macrofaunal group (annelids) across a 6 million km 2 region of the abyssal seafloor.
    Type: Article , PeerReviewed
    Format: text
    Format: text
    Format: other
    Format: other
    Format: other
    Location Call Number Limitation Availability
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    OceanRep: Article in a Scientific Journal - peer-reviewed
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