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Protist diversity and function in the dark ocean - challenging the paradigms of deep-sea ecology with special emphasis on foraminiferans and naked protists

Gooday, Andrew J. ORCID: https://orcid.org/0000-0002-5661-7371; Schoenle, Alexandra; Dolan, John R.; Arndt, Hartmut. 2020 Protist diversity and function in the dark ocean - challenging the paradigms of deep-sea ecology with special emphasis on foraminiferans and naked protists. European Journal of Protistology, 75, 125721. https://doi.org/10.1016/j.ejop.2020.125721

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Abstract/Summary

The dark ocean and the underlying deep seafloor together represent the largest environment on this planet, comprising about 80% of the oceanic volume and covering more than two-thirds of the Earth's surface, as well as hosting a major part of the total biosphere. Emerging evidence suggests that these vast pelagic and benthic habitats play a major role in ocean biogeochemistry and represent an “untapped reservoir” of high genetic and metabolic microbial diversity. Due to its huge volume, the water column of the dark ocean is the largest reservoir of organic carbon in the biosphere and likely plays a major role in the global carbon budget. The dark ocean and the seafloor beneath it are also home to a largely enigmatic food web comprising little-known and sometimes spectacular organisms, mainly prokaryotes and protists. This review considers the globally important role of pelagic and benthic protists across all protistan size classes in the deep-sea realm, with a focus on their taxonomy, diversity, and physiological properties, including their role in deep microbial food webs. We argue that, given the important contribution that protists must make to deep-sea biodiversity and ecosystem processes, they should not be overlooked in biological studies of the deep ocean.

Item Type: Publication - Article
Digital Object Identifier (DOI): https://doi.org/10.1016/j.ejop.2020.125721
ISSN: 09324739
Date made live: 10 Jun 2020 14:23 +0 (UTC)
URI: https://nora.nerc.ac.uk/id/eprint/527931

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