demersal


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demersal

[də′mər·səl]
(biology)
Living at or near the bottom of the sea.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Mixed stratum, characterized by lower complexity and relief than areas of hard stratum, also comprised a distinctive demersal fish assemblage with high numbers of species.
To gain access to hoki, jack mackerel, and southern demersal stocks, Japanese producers have increasingly been turning to South American countries, especially Argentina and Chile.
Pink shrimp freezers and vessels targeting demersal fishes on the other hand did not show differences among them (P = 0.96) but were bigger than the other vessels (P < 0.01).
New methods using information collected by electronic tags, which contain miniaturized onboard computers, are providing location estimates of demersal marine fishes (see review in Arnold and Dewar, 2001).
Other important flows occur from mesozooplankton towards mesopelagic fish, and from anchovy and sardine towards predators such demersal fish, jumbo squid, sea lions and marine birds.
Trawl studies have revealed that demersal fish diversity in the region is low and that assemblages can be subdivided into those inhabiting neritic, shelf, and slope areas (Macpherson and Roel, 1987; Roel, 1987; Macpherson and Gordoa, 1992; Smale et al., 1993).
Bottom trawl fishing has been historically responsible for the bulk of demersal catches off southeastern and southern Brazil (Valentini & Pezzuto, 2006).
Karadeniz'de barbunya ve mezgit gibi hedef demersal baliklarin avciliginda kullanilan dip trol aglarinda isletim hatalarindan ve ag goz acikliginin yetersizliginden oturu iskarta av oranlari sirasiyla %25 ve %42'lere kadar ulasmaktadir.
This volume consists of eight reviews of topics in oceanography and marine biology: the use of visual imaging for marine biological and ecological research; the ecology of macro and microtidal estuaries; concepts, definitions, and assessment of habitat complexity for demersal marine fish; biodiversity and ecosystem consequences of the proliferation of artificial structures in the sea; the ecophysiological responses of corals to environmental stressors; the ecological impacts of marine disposal of mine tailings; the ecological roles of exploited sea cucumbers; and multidecadal spatial and temporal variation in phytoplankton diversity in south-eastern Australia.
In the third position, demersal fish landings last April reached 23,776 tons logging a 2.8 per cent decrease over 24,450 tons recorded during the same month of 2015.
Omani waters are rich in many types of marine life, such as crustaceans and mollusks along with Pelagic and Demersal fish particularly sardines, which is a traditional seafood and rich in protein and fat.
This demersal species is distributed along the coastal waters of the Southeast Pacific from Ancon, Peru to Chiloe, Chile (Chirichingo 1974, Compagno 1984, Ojeda et al.