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  2. Cyanobacteria - Wikipedia

    en.wikipedia.org/wiki/Cyanobacteria

    Marine cyanobacteria include the smallest known photosynthetic organisms. The smallest of all, Prochlorococcus, is just 0.5 to 0.8 micrometres across. [48] In terms of numbers of individuals, Prochlorococcus is possibly the most plentiful genus on Earth: a single millilitre of surface seawater can contain 100,000 cells of this genus or more.

  3. Prochlorococcus - Wikipedia

    en.wikipedia.org/wiki/Prochlorococcus

    Marine cyanobacteria are to date the smallest known photosynthetic organisms; Prochlorococcus is the smallest at just 0.5 to 0.7 micrometres in diameter. [11] [2] The coccoid shaped cells are non-motile and free-living. Their small size and large surface-area-to-volume ratio, gives them an advantage in nutrient-poor water.

  4. Marine microorganisms - Wikipedia

    en.wikipedia.org/wiki/Marine_microorganisms

    Marine microorganisms known as cyanobacteria first emerged in the oceans during the Precambrian era roughly 2 billion years ago. Over eons, the photosynthesis of marine microorganisms generated by oxygen has helped shape the chemical environment in the evolution of plants, animals and many other life forms.

  5. Marine primary production - Wikipedia

    en.wikipedia.org/wiki/Marine_primary_production

    [4]: 1242 Marine primary producers are important because they underpin almost all marine animal life by generating most of the oxygen and food that provide other organisms with the chemical energy they need to exist. The principal marine primary producers are cyanobacteria, algae and marine plants.

  6. Cyanobacterial morphology - Wikipedia

    en.wikipedia.org/wiki/Cyanobacterial_morphology

    Cyanobacteria show a high degree of morphological diversity and can undergo a variety of cellular differentiation processes in order to adapt to certain environmental conditions. This helps them thrive in almost every habitat on Earth, ranging from freshwater to marine and terrestrial habitats, including even symbiotic interactions. [27] [8]

  7. Marine food web - Wikipedia

    en.wikipedia.org/wiki/Marine_food_web

    The pelagic food web, showing the central involvement of marine microorganisms in how the ocean imports nutrients from and then exports them back to the atmosphere and ocean floor. A marine food web is a food web of marine life. At the base of the ocean food web are single-celled algae and other plant-like organisms known as phytoplankton.

  8. Marine prokaryotes - Wikipedia

    en.wikipedia.org/wiki/Marine_prokaryotes

    Originally, biologists classified cyanobacteria as an algae, and referred to it as "blue-green algae". The more recent view is that cyanobacteria are bacteria, and hence are not even in the same Kingdom as algae. Most authorities exclude all prokaryotes, and hence cyanobacteria from the definition of algae. [87] [88]

  9. Trichodesmium erythraeum - Wikipedia

    en.wikipedia.org/wiki/Trichodesmium_erythraeum

    Trichodesmium erythraeum is a marine cyanobacteria species characterized by its prolific diazotrophic capabilities. [1] They play a dominant role in the ocean ecosystem, supplying a steady and significant source of new, biologically available nitrogen and cycling phosphorus. [2]

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