Abundance of diatom cells in sediments from the Okhotsk and Bering Seas and the Northwest Pacific Ocean


The present investigation was targeted at diatom composition studies in the surface sediments (0-1 cm) sampled in the Sea of Okhotsk and the northwest Pacific in the depth range from 130 to 6110 m. The taxonomic analysis, as well as the quantitative (the diatom cell abundance per sediment dry weight unit) content and ecological group definition, was applied. Ten diatom taxa are the main body (80-100%) of the diatom assemblages: Bacterosira bathyomphala, Chaetoceros spp. (spores), Actinocyclus curvatulus, Thalassiosira latimarginata (group), T. antarctica (spores), Neodenticula seminae, Rhizosolenia hebetata f. hiemalis, Thalassiothrix longissima, Coscinodiscus marginatus, Coscinodiscus oculus iridis. The relative content of these species reflects the sedimentation conditions for different parts of the sea: the shelf, the continental slope, the open sea, and the ocean. The highest diatom content (45.6.3-60.0 mln per g of dry weight) was found for the surface sediments in the central part of the Sea of Okhotsk and the continental slope of western Kamchatka.

Supplement to: Tsoy, Ira B; Obrezkova, Maria S; Artemova, Antonina V (2009): Diatoms in surface sediments of the Sea of Okhotsk and the Northwest Pacific Ocean. Oceanology, 49(1), 130-139

DOI https://doi.org/10.1594/PANGAEA.727413
Related Identifier https://doi.org/10.1134/S0001437009010159
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.727413
Creator Tsoy, Ira B ORCID logo; Obrezkova, Maria S; Artemova, Antonina V ORCID logo
Publisher PANGAEA
Contributor Pacific Oceanology Institute, Far East Branch of Russian Academy of Sciences
Publication Year 2004
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Language English
Resource Type Supplementary Dataset; Dataset
Format text/tab-separated-values
Size 135 data points
Discipline Earth System Research
Spatial Coverage (-176.823W, 44.605S, 144.736E, 58.583N); Sea of Okhotsk; North Pacific; Bering Sea; Emperor Seamounts
Temporal Coverage Begin 1998-08-12T13:45:00Z
Temporal Coverage End 2001-06-10T09:12:00Z