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The ocean represents the largest continuous planetary ecosystem, hosting an enormous variety of organisms, which include microscopic biota such as unicellular eukaryotes (protists). Despite their small size, protists play key roles in marine biogeochemical cycles and harbour tremendous evolutionary diversity.
Marine microorganisms are defined by their habitat as microorganisms living in a marine environment, that is, in the saltwater of a sea or ocean or the brackish water of a coastal estuary. A microorganism (or microbe) is any microscopic living organism or virus, which is invisibly small to the unaided human eye without magnification ...
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Feb 28, 2022 · Here, we review marine protists, their evolutionary histories, diversity, ecological roles, and lifestyles in all layers of the ocean, with reference to how views have shifted over time through extensive investigation.
Invisible to the naked eye, there is a teeming world of microbes living in the ocean with a complexity and diversity that rivals all other life on Earth. They include bacteria, viruses, archaea, protists, and fungi. If you weighed all the living organisms in the ocean, 90 percent of that weight would be from microbes.
Jun 4, 2018 · Fig. 1: The size of biology in the oceans spans nine orders of magnitude from the smallest viruses (~17 nm) to the largest charismatic megafauna (blue whale, ~33 m).
Apr 13, 2022 · Here, we characterized microbes at the San-Pedro Ocean Time series (2005–2018), using SSU rRNA gene sequencing from two size fractions (0.2–1 and 1–80 μm), with a universal primer set that...
