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Fish stocks indicators, which is normalized as a 0–100 proximity-to-target score, with 100 representing "at target" and 0 being furthest from the target. 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.
In fisheries science and ecology, stock assessment is an important tool in fisheries management. In particular, to ensure continued, healthy, fish stocks, measurements of the Spawning Stock Biomass (the stock population capable of reproducing) allows sensible conservation strategies to be developed and maintained through the application of ...
It benefits also of functionalities from the Fisheries Global Information System (FIGIS) implemented by FAO. The information is presented in synthesized fact sheets and state of resource summaries which include images, maps of geographical distribution, general biological and habitat characteristics, scientific assessment results, management ...
Hilborn, Ray and Walters, Carl J (1992) Quantitative Fisheries Stock Assessment Springer. ISBN 978-0-412-02271-5; McCallum, Hamish (2000) Population Parameters Blackwell Publishing. ISBN 978-0-86542-740-2; Prevost E and Chaput G (2001) Stock, recruitment and reference points Institute National de la Recherche Agronomique. ISBN 2-7380-0962-X.
The goal of fisheries management is to produce sustainable biological, environmental and socioeconomic benefits from renewable aquatic resources. Wild fisheries are classified as renewable when the organisms of interest (e.g., fish , shellfish , amphibians , reptiles and marine mammals ) produce an annual biological surplus that with judicious ...
Empirical research in the past two decades has shown that catch share management of fisheries has a variety of ecological, economic and social outcomes when it is compared with traditional management of fishery inputs. Studies examining the ecological impacts of catch share management show that they stabilize landings and catch limits. [18]
A study commissioned and funded by MSC [4]: 746 found that MSC-certified fisheries show improvements that deliver benefits to the marine environment. Benefits included: increased stocks; improved management of stocks; reduced bycatch; expansion of environmentally protected areas; and increased knowledge about ecosystem impacts amongst fishers.
In fisheries models natural mortality is denoted by (M). [1] Fishing mortality: the removal of fish from the stock due to fishing activities using any fishing gear. [1] It is denoted by (F) in fisheries models. (M) and (F) are additive instantaneous rates that sum up to (Z), the instantaneous total mortality coefficient; that is, Z=M+F. [2]