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"Marine protists are a polyphyletic group of organisms playing major roles in the ecology and biogeochemistry of the oceans, including performing much of Earth's photosynthesis and driving the carbon, nitrogen, and silicon cycles. In addition, marine protists occupy key positions in the tree of life, including as the closest relatives of ...
Marine prokaryotes are marine bacteria and marine archaea. They are defined by their habitat as prokaryotes that live in marine environments, that is, in the saltwater of seas or oceans or the brackish water of coastal estuaries. All cellular life forms can be divided into prokaryotes and eukaryotes.
Jul 23, 2019 · The ocean is a marine environment. And a single drop of seawater can contain millions of marine microbes. These tiny living things help supply oxygen and food to other organisms that live in the ocean. They even help keep the ocean clean.
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Mar 7, 2022 · Dozens of oval bacteria coat the membrane of this microorganism, known as a protist, collected from the sulfidic, anoxic Cariaco Basin off the coast of Venezuela. This pairing is probably an example of mutualistic symbiosis, a close relationship between two species in which both parties benefit.
Feb 28, 2022 · Abstract. Diversity within marine microbiomes spans the three domains of life: microbial eukaryotes (i.e., protists), bacteria, and archaea. Although protists were the first microbes observed by microscopy, it took the advent of molecular techniques to begin to resolve their complex and reticulate evolutionary history.
Nov 21, 2016 · Protists are an important part of the marine food web. In this Review, Caronet al. summarize recent insights from transcriptomic studies of cultured and free-living protists and discuss how these ...
