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Organisms here generally live in close relationship with the substrate and many are permanently attached to the bottom. The benthic boundary layer , which includes the bottom layer of water and the uppermost layer of sediment directly influenced by the overlying water, is an integral part of the benthic zone, as it greatly influences the ...
These organisms can be used to indicate the presence, concentration, and effect of water pollutants in the aquatic environment. Some water contaminants—such as nutrients, chemicals from surface runoff, and metals [20] —settle in the sediment of river beds, where many benthos reside. Benthos are highly sensitive to contamination, so their ...
Typically built in areas with a generally featureless bottom to promote marine life, it may be intended to control erosion, protect coastal areas, block ship passage, block the use of trawling nets, [2] support reef restoration, improve aquaculture, or enhance scuba diving and surfing. [3] Early artificial reefs were built by the Persians and ...
The Antarctic Benthic Deep-Sea Biodiversity Project (ANDEEP) [1] is an international project to investigate deep-water biology of the Scotia and Weddell seas. Benthic refers to "bottom-dwelling" organisms that are known to exhibit unusual characteristics not normally seen in shallow-dwelling creatures. ANDEEP has already made many notable ...
Bottom trawling can be contrasted with midwater trawling (also known as pelagic trawling), where a net is towed higher in the water column. Midwater trawling catches pelagic fish such as anchovies and mackerel , whereas bottom trawling targets both bottom-living fish ( groundfish ) and semi-pelagic species such as cod , squid , shrimp , and ...
Benthic zone – Ecological region at the lowest level of a body of water; Benthos – Community of organisms that live in the benthic zone; Bottom feeder – Aquatic animal that feeds on the bottom of a body of water; Bottom trawling – Fishing method by towing a net along the seafloor; Deep sea – Lowest layer in the ocean
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