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Protists are usually one-celled microorganisms. They include algae ( autotrophs which make their own food) and protozoans ( heterotrophs which eat the algae for food). In recent years, researchers have discovered many protists are mixotrophs, which can function in both modes. Marine protists are defined by their habitat as protists that live in ...
The study and characterization of protists has a long and distinguished tradition. Even with this history, the extraordinary species diversity and variety of interactions of protists in the sea are only now being fully appreciated. Figure 1 shows representative examples of marine protists, and of methods used to visualize these microbes.
- Foraminifera, The Little Architects
- Diatoms, The Tiny Glass Ornaments
- Dinoflagellates, The Fire Plants
Foraminifera ('forams') are one of the largest unicellular organisms. They can be as tiny as 100 micrometers, but some grow as grand as seven inches in length. They are remarkable little architects that build themselves a shell, called a test, most commonly made out of calcium carbonate. Foram shells are pierced by holes called foramina, and sprout...
The diatomsare the largest group of unicellular algal protists, with over 13,500 species. But the number of species varies, depending on the scientist you talk to. Some say there are 20,000 species, some 200,000, and some say there are greater than 1,000,000 species! Diatoms are found in nearly every aquatic environment. Many, of course, are found ...
Dinoflagellates are the second largest group of algal protists, after the diatoms, and include about 3,400 species. Dinoflagellates belong to the classification Pyrrophyta- which literally means fire plants.
May 15, 2024 · protist, any member of a group of diverse eukaryotic, predominantly unicellular microscopic organisms. They may share certain morphological and physiological characteristics with animals or plants or both. The term protist typically is used in reference to a eukaryote that is not a true animal, plant, or fungus or in reference to a eukaryote ...
- The Editors of Encyclopaedia Britannica
of protists has a long and distinguished tradition. Even with this history, the extraordinary species diversity and vari-ety of interactions of protists in the sea are only now being fully appreciated. Figure 1 shows representative examples of marine protists, and of methods used to visualize these microbes. Protists can be autotrophic or het-
Apr 15, 2021 · Here we used environmental DNA (eDNA) metabarcoding to explore the biodiversity of marine metazoans, protists and bacteria along an extensive and highly heterogeneous coastline. Our results showed ...
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Apr 23, 2021 · Despite the fundamental roles of protists in the food web of marine surface waters 9,10,11, we know little about them on the deep-sea floor. Assessing deep-sea sediments’ protist diversity and ...
