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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 ...
All animals on Earth form associations with microorganisms, including protists, bacteria, archaea, fungi, and viruses. In the ocean, animal–microbial relationships were historically explored in single host–symbiont systems.
The ocean microbiome is a highly dilute microbial system that covers the majority of Earth’s surface and extends an average of 3600 m down to the seafloor. As one of the first microbiomes to be studied, the diversity and distribution of its members is now becoming familiar.
Apr 1, 2024 · Prokaryotes (bacteria and archaea) and unicellular eukaryotes or protists (including marine fungi) are key components of the ocean microbiome and feature fundamental differences in cellular structure, feeding habits, metabolic diversity, growth rates, and behavior .
Nov 21, 2016 · Protists, which are single-celled eukaryotes, critically influence the ecology and chemistry of marine ecosystems, but genome-based studies of these organisms have lagged behind those of other...
The marine microbiome is the total of microorganisms and viruses in the ocean and seas and in any connected environment, including the seafloor and marine animals and plants. In the first part of the book, diversity, origin and evolution of the marine microorganisms and viruses are discussed.
