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  2. Aquatic ecosystem - Wikipedia

    en.wikipedia.org/wiki/Aquatic_ecosystem

    An aquatic ecosystem is an ecosystem found in and around a body of water, in contrast to land-based terrestrial ecosystems. Aquatic ecosystems contain communities of organisms—aquatic life—that are dependent on each other and on their environment. The two main types of aquatic ecosystems are marine ecosystems and freshwater ecosystems. [1]

  3. Biotic index - Wikipedia

    en.wikipedia.org/wiki/Biotic_index

    Pollution tolerant: These organisms will be found in polluted, as well as clean aquatic ecosystems (Leeches, Blood worms) Some index worksheets combine groups 2 and 3 together, giving only 3 groups. Each group has a number assigned to it and is multiplied by the number of organisms found in that group.

  4. Portal:Marine life - Wikipedia

    en.wikipedia.org/wiki/Portal:Marine_life

    General characteristics of a large marine ecosystem (Gulf of Alaska). Marine life, sea life or ocean life is the collective ecological communities that encompass all aquatic animals, plants, algae, fungi, protists, single-celled microorganisms and associated viruses living in the saline water of marine habitats, either the sea water of marginal seas and oceans, or the brackish water of coastal ...

  5. Underwater environment - Wikipedia

    en.wikipedia.org/wiki/Underwater_environment

    Marine ecosystems are the largest of Earth's aquatic ecosystems and are distinguished by waters that have a high salt content. Marine waters cover more than 70% of the surface of the Earth and account for more than 97% of Earth's water supply [22] [23] and 90% of habitable space on Earth. [24] Marine ecosystems include nearshore systems, such ...

  6. Marine ecosystem - Wikipedia

    en.wikipedia.org/wiki/Marine_ecosystem

    Marine ecosystems are characterized by the biological community of organisms that they are associated with and their physical environment. Classes of organisms found in marine ecosystems include brown algae, dinoflagellates, corals, cephalopods, echinoderms, and sharks.

  7. Freshwater ecosystem - Wikipedia

    en.wikipedia.org/wiki/Freshwater_ecosystem

    Lentic ecosystems can be compared with lotic ecosystems, which involve flowing terrestrial waters such as rivers and streams. Together, these two ecosystems are examples of freshwater ecosystems. Lentic systems are diverse, ranging from a small, temporary rainwater pool a few inches deep to Lake Baikal, which has a maximum depth of 1642 m. [10]

  8. Limnology - Wikipedia

    en.wikipedia.org/wiki/Limnology

    Lake ecosystem, also known as Lentic ecosystems – Type of ecosystem; Limnoforming – Introducing living organisms in a degraded lake to improve its biological activity; Limnological tower – Structure for the study of aquatic ecosystems; River ecosystem, also known as Lotic ecosystems – Type of aquatic ecosystem with flowing freshwater

  9. Photosymbiosis - Wikipedia

    en.wikipedia.org/wiki/Photosymbiosis

    Photosymbiosis is important in the development, maintenance, and evolution of terrestrial and aquatic ecosystems, for example in biological soil crusts, soil formation, supporting highly diverse microbial populations in soil and water, and coral reef growth and maintenance. [5] [6]

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