Three ways of defining a sustainable fishery exist: Long term constant yield is the idea that undisturbed nature establishes a steady state that changes little over time. Properly done, fishing at up to maximum sustainable yield allows nature to adjust to a new steady state, without compromising future harvests. However, this view is naive, because constancy is not an …

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 any sizes, such as ponds, wetlands, rivers, …

Pelagic fish live in the pelagic zone of ocean or lake waters—being neither close to the bottom nor near the shore—in contrast with demersal fish that do live on or near the bottom, and reef fish that are associated with coral reefs.. The marine pelagic environment is the largest aquatic habitat on Earth, occupying 1,370 million cubic kilometres (330 million cubic miles), and is the ...

Shizuoka (静岡市, Shizuoka-shi, [ɕizɯꜜoka]) is the capital city of Shizuoka Prefecture, Japan, and the prefecture's second-largest city in both population and area.It has been populated since prehistoric times. As of 1 December 2019, the city had an estimated population of 690,881 in 106,087 households, and a population density of 490 inhabitants per square kilometre …

Lofoten (Norwegian pronunciation: [ˈlùːfuːtn̩]) is an archipelago and a traditional district in the county of Nordland, Norway.Lofoten has distinctive scenery with dramatic mountains and peaks, open sea and sheltered bays, beaches and untouched lands. There are two towns, Svolvær and Leknes – the latter is approximately 169 km (105 mi) north of the Arctic Circle and …

The Atlantic cod (Gadus morhua) is a benthopelagic fish of the family Gadidae, widely consumed by humans. It is also commercially known as cod or codling. Dry cod may be prepared as unsalted stockfish, and as cured salt cod or clipfish.. In the western Atlantic Ocean, cod has a distribution north of Cape Hatteras, North Carolina, and around both coasts of Greenland and …

The krill fishery is the commercial fishery of krill, small shrimp-like marine animals that live in the oceans world-wide.The present estimate for the biomass of Antarctic krill (Euphausia superba) is 379 million tonnes. The total global harvest of krill from all fisheries amounts to 150–200,000 tonnes annually, mainly Antarctic krill and North Pacific krill (E. pacifica).

Importance. Hundreds of millions of people around the world rely on artisanal fisheries to live. Artisanal fishing is critically important for not only food, but for jobs, income, nutrition, food security, sustainable livelihoods, and poverty alleviation as well. Artisanal fisheries are the predominant form of fisheries in "tropical developing countries" such as Nigeria.

Bristol Bay (Central Yupik: Iilgayaq, Russian: Залив Бристольский) is the easternmost arm of the Bering Sea, at 57° to 59° North 157° to 162° West in Southwest Alaska.Bristol Bay is 400 km (250 mi) long and 290 km, (180 mi) wide at its mouth. A number of rivers flow into the bay, including the Cinder, Egegik, Igushik, Kvichak, Meshik, Nushagak, Naknek, Togiak, and Ugashik.

A fishing weir, fish weir, fishgarth or kiddle is an obstruction placed in tidal waters, or wholly or partially across a river, to direct the passage of, or trap fish. A weir may be used to trap marine fish in the intertidal zone as the tide recedes, fish such as salmon as they attempt to swim upstream to breed in a river, or eels as they migrate downstream.