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An example in fisheries is the length of fish in a fishery, which might show two or more modes or peaks reflecting fish of different ages or species. Biodiversity – is the variation of life forms within an area. In the context of fisheries the number and variety of organisms found within a fishery.
Fishery can mean either the enterprise of raising or harvesting fish and other aquatic life [1] or, more commonly, the site where such enterprise takes place (a.k.a., fishing grounds). [2] Commercial fisheries include wild fisheries and fish farms , both in freshwater waterbodies (about 10% of all catch) and the oceans (about 90%).
Fish mortality – Fish mortality is a term widely used in fisheries science that denotes the loss of fish from a stock through death. Condition index – The condition index in fish is a way to measure the overall health of a fish by comparing its weight with the typical weight of other fish of the same kind and of the same length.
2. Above the ship's uppermost solid structure. [3] 3. Overhead or high above. alongside By the side of a ship or pier. [3] ama A secondary hull or float attached to the primary hull of a vessel for stability, or the hulls of a modern catamaran. amidships 1. A position half way along the length of a ship or boat. [13] 2.
A fisherman or fisher is someone who captures fish and other animals from a body of water, or gathers shellfish. [1] Worldwide, there are about 38 million commercial and subsistence fishers and fish farmers. [2] Fishermen may be professional or recreational. Fishing has existed as a means of obtaining food since the Mesolithic period. [3]
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Fisheries science is the academic discipline of managing and understanding fisheries. [1] It is a multidisciplinary science, which draws on the disciplines of limnology, oceanography, freshwater biology, marine biology, meteorology, conservation, ecology, population dynamics, economics, statistics, decision analysis, management, and many others in an attempt to provide an integrated picture of ...
Managing fisheries is about managing people and businesses, and not about managing fish. Fisheries are managed by regulating the actions of people. [22] If fisheries management is to be successful, then associated human factors, such as the reactions of anglers and harvesters, are of key importance, and need to be understood. [23] [24]