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  2. Trophic state index - Wikipedia

    en.wikipedia.org/wiki/Trophic_state_index

    A eutrophic water body, commonly a lake or pond, has high biological productivity. Due to excessive nutrients, especially nitrogen and phosphorus, these water bodies are able to support an abundance of aquatic plants. Usually, the water body will be dominated either by aquatic plants or algae. When aquatic plants dominate, the water tends to be ...

  3. Freshwater environmental quality parameters - Wikipedia

    en.wikipedia.org/wiki/Freshwater_environmental...

    Freshwater environmental quality parameters are those chemical, physical and biological parameters that can be used to characterise a freshwater body. Because almost all water bodies are dynamic in their composition, the relevant quality parameters are typically expressed as a range of expected concentrations.

  4. Fish farming - Wikipedia

    en.wikipedia.org/wiki/Fish_farming

    In small systems, the fish are often fed commercial fish food, and their waste products can help fertilize the fields. In larger ponds, the pond grows water plants and algae as fish food. Some of the most successful ponds grow introduced strains of plants, as well as introduced strains of fish. [32] Control of water quality is crucial.

  5. Recirculating aquaculture system - Wikipedia

    en.wikipedia.org/wiki/Recirculating_aquaculture...

    Reduced water requirements as compared to raceway or pond aquaculture systems. [16] Reduced land needs due to the high stocking density [17] Site selection flexibility and independence from a large, clean water source. [18] Reduction in wastewater effluent volume. [19] Increased biosecurity and ease in treating disease outbreaks. [15]

  6. Aquaculture - Wikipedia

    en.wikipedia.org/wiki/Aquaculture

    Apart from fish and shrimp, some aquaculture undertakings, such as seaweed and filter-feeding bivalve mollusks like oysters, clams, mussels and scallops, are relatively benign and even environmentally restorative. [12] Filter-feeders filter pollutants as well as nutrients from the water, improving water quality. [156]

  7. Pond - Wikipedia

    en.wikipedia.org/wiki/Pond

    The technical distinction between a pond and a lake has not been universally standardized. Limnologists and freshwater biologists have proposed formal definitions for pond, in part to include 'bodies of water where light penetrates to the bottom of the waterbody', 'bodies of water shallow enough for rooted water plants to grow throughout', and 'bodies of water which lack wave action on the ...

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