Dictionary of ichthyology. 2009.
Overfishing — Atlantic cod stocks were severely overfished in the 1970s and 1980s, leading to their abrupt collapse in 1992 Overfishing … Wikipedia
biological reference points — Indicators or signposts against which the status of a stock can be judged. Two types are often used: based on fishing mortality and based on the sustainability of recruitment. Reference points can be either desirable targets (target reference… … Fisheries — dictionary
biological reference point — a fishing mortality rate or biomass that may provide acceptable protection against growth overfishing and/or recruitment overfishing for a particular stock. It is usually calculated from equilibrium yield per recruit curves, spawning stock… … Dictionary of ichthyology
overfishing limit — the point at which fishing seriously compromises continued and sustained productivity. May be determined from biological, economic and sociological considerations relevant to that particular fishery … Dictionary of ichthyology
economic overfishing — occurs when a fishery is generating no economic rent (higher than economic efficiency), primarily because an excessive level of fishing effort is applied in the fishery. Does not always imply biological overfishing … Dictionary of ichthyology
Population dynamics of fisheries — A fishery is an area with an associated fish or aquatic population which is harvested for its commercial or recreational value. Fisheries can be wild or farmed. Population dynamics describes the ways in which a given population grows and shrinks… … Wikipedia
Bigfin reef squid — Not to be confused with Bigfin squid. Bigfin reef squid A bigfin reef squid from the Tokyo Sea Life Park, Tokyo, Japan … Wikipedia
environment — environmental, adj. environmentally, adv. /en vuy reuhn meuhnt, vuy euhrn /, n. 1. the aggregate of surrounding things, conditions, or influences; surroundings; milieu. 2. Ecol. the air, water, minerals, organisms, and all other external factors… … Universalium
Maximum sustainable yield — In population ecology and economics, maximum sustainable yield or MSY is, theoretically, the largest yield (or catch) that can be taken from a species stock over an indefinite period. Fundamental to the notion of sustainable harvest, the concept… … Wikipedia
Demersal fish — Bluespotted ribbontail ray resting on the seafloor Demersal fish live on or near the bottom of the sea or lakes.[1] They occupy the sea floors and lake beds, which usually consist of mud, sand, gravel or rocks … Wikipedia
