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Jack mackerel caught by a Chilean purse seiner Fishing down the food web. 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.
From destructive fishing practices and exploitation of mineral resources to pollution and litter, evidence of human impact can be found in virtually all deep-sea ecosystems. [43] [44] In response, the international community has set a series of ambitious goals aimed at protecting the marine environment and its resources for future generations.
Over-fishing exacerbates the effects of climate change by creating conditions that make a fishing population more sensitive to environmental changes. Studies show that the state of the ocean is causing fisheries to collapse, and in areas where fisheries have not yet collapsed, the amount of over-fishing that is done is having a significant ...
In 2024 a study [147] was released, dedicated to the impact of fishing and non fishing ships on the coastal waters of the ocean when 75% of the industrial activity occur. According to the study: "A third of fish stocks are operated beyond biologically sustainable levels and an estimated 30–50% of critical marine habitats have been lost owing ...
The United Nations Environment Programme (UNEP) mapped the impacts of stressors such as climate change, pollution, exotic species, and over-exploitation of resources on the oceans. The report shows at least 75 percent of the world's key fishing grounds may be affected.
Type of fish Environmental Impact Pole/troll: Fishing rod/pole and bait: Open ocean swimmers to bottom dwellers: Low environmental impact. Reduced chance of bycatch Purse seining: A large net is used to surround fish. The bottom of the net is pulled close to push the fish to the middle Schooling fish: Higher chance of bycatch Gillnetting
As fisheries are important both socially and economically, it is difficult to maintain a socioeconomic sustainable management system that considers the environmental impact of fishing methods, particularly in under-developed regions where communities rely on fisheries for their livelihood. [36]
The environmental impact of fishing can be divided into issues that involve the availability of fish to be caught, such as overfishing, sustainable fisheries, and fisheries management; and issues that involve the impact of fishing on other elements of the environment, such as by-catch and destruction of habitat such as coral reefs. [51]