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English: Diagram of the soil food web, taking into account the diverse roles of protists as not just bacterivores, but also mycophages and omnivores. The images used here were obtained from www.phylopic.org and are available for reuse under a Creative Commons license. The diagram is based on the following article: (May 2018).
Diagram of the soil food web, taking into account the diverse roles of protists as not just bacterivores, but also mycophages and omnivores. [137] Arrows show the flow of nutrients. In the trophic webs of soils, protists are the main consumers of both bacteria and fungi , the two main pathways of nutrient flow towards higher trophic levels. [ 176 ]
Protists are distributed across all major groups of eukaryotes, including those that contain multicellular algae, green plants, animals, and fungi. If photosynthetic and fungal protists are distinguished from protozoa, they appear as shown in the phylogenetic tree of eukaryotic groups.
Colpoda irregularis - This species is noted for a prominent post oral sac and was cultured from moss and soil crust from rocks near desert sagebrush of southwest Idaho. [35] Colpoda lucida; Colpoda magna - A large species, 120-400 micrometres long. Appears dark at lower powers because of dark structures near the contractile vacuole.
Ciliates are an important group of protists, common almost anywhere there is water—in lakes, ponds, oceans, rivers, and soils, including anoxic and oxygen-depleted habitats. [2] About 4,500 unique free-living species have been described, and the potential number of extant species is estimated at 27,000–40,000. [3]
The diagram on the right is an overview of the interactions between planktonic protists recorded in a manually curated Protist Interaction DAtabase (PIDA). The network is based on 2422 ecological interactions in the PIDA registered from ~500 publications spanning the last 150 years.
Physarum polycephalum, an acellular [1] slime mold or myxomycete popularly known as "the blob", [2] is a protist with diverse cellular forms and broad geographic distribution. The “acellular” moniker derives from the plasmodial stage of the life cycle : the plasmodium is a bright yellow macroscopic multinucleate coenocyte shaped in a ...
Amoebozoa is a major taxonomic group containing about 2,400 described species of amoeboid protists, [8] often possessing blunt, fingerlike, lobose pseudopods and tubular mitochondrial cristae. [7] [9] In traditional classification schemes, Amoebozoa is usually ranked as a phylum within either the kingdom Protista [10] or the kingdom Protozoa.