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Fish stocks. Fish stocks are subpopulations of a particular species of fish, for which intrinsic parameters (growth, recruitment, mortality and fishing mortality) are traditionally regarded as the significant factors determining the stock's population dynamics, while extrinsic factors (immigration and emigration) are traditionally ignored.
v. t. e. Stockfish is a free and open-source chess engine, available for various desktop and mobile platforms. It can be used in chess software through the Universal Chess Interface. Stockfish has been one of the best chess engines in the world for several years; [3][4][5] it has won all main events of the Top Chess Engine Championship (TCEC ...
In population ecology and economics, optimum sustainable yield is the level of effort (LOE) that maximizes the difference between total revenue and total cost. Or, where marginal revenue equals marginal cost. This level of effort maximizes the economic profit, or rent, of the resource being utilized. It usually corresponds to an effort level ...
Virtual population analysis. Virtual population analysis (VPA) is a cohort modeling technique commonly used in fisheries science for reconstructing historical fish numbers at age using information on death of individuals each year. This death is usually partitioned into catch by fisheries and natural mortality.
A promotional music video by the Jacksons was created for "Blame It on the Boogie" in 1978. The video, featuring the group's members dancing on a black background, relied heavily on electronic trail effects, created at Image West, Ltd. using then-cutting edge equipment: the Scanimate analog computer system and a Quantel DFS 3000 digital framestore.
Overfishing is the removal of a species of fish (i.e. fishing) from a body of water at a rate greater than that the species can replenish its population naturally (i.e. the overexploitation of the fishery 's existing fish stock), resulting in the species becoming increasingly underpopulated in that area. Overfishing can occur in water bodies of ...
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Stock assessments provide fisheries managers with the information that is used in the regulation of a fish stock. Biological and fisheries data are collected in a stock assessment. A wide array of biological data may be collected for an assessment. These include details on the age structure of the stock, age at first spawning, fecundity, ratio ...