Popular fish species disappear from Turkey’s Marmara and Black Seas

Popular fish species disappear from Turkey’s Marmara and Black Seas

Popular fish species disappear from Turkey’s Marmara and Black Seas

Bluefin tuna. Image from Pxhere, CC0.

Bluefin tuna, swordfish and Atlantic mackerel are among the fish species considered commercially extinct or extirpated on the Turkish side of the Marmara and Black Seas.

A new study by researchers with the Sea Around Us initiative at the University of British Columbia, Mersea Marine Conservation Consulting, Turkey’s Central Fisheries Research Institute and the Institute of Marine Sciences and Management at the University of Istanbul, found that 17 fish species have been extirpated and 17 are commercially extinct in Turkey’s Black Sea, while 19 have been extirpated and 22 went commercially extinct in the Sea of Marmara.

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Popular seafood species in sharp decline around the world

Popular seafood species in sharp decline around the world

Popular seafood species in sharp decline around the world

Octopus at a fish market in Indonesia. Photo by Deng Palomares.

Fish market favourites such as orange roughy, common octopus and pink conch are among the species of fish and invertebrates in rapid decline around the world, according to new research.

In the first study of its kind, researchers from the Sea Around Us initiative at UBC, the GEOMAR Helmholtz Centre for Ocean Research Kiel and the University of Western Australia assessed the biomass —the weight of a given population in the water— of more than 1,300 fish and invertebrate populations. They discovered global declines, some severe, of many popularly consumed species.

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COVID-19 and Brexit can help with the recovery of UK fish stocks

COVID-19 and Brexit can help with the recovery of UK fish stocks

Fishing boats in Brixham harbour, UK. Photo by Dave_S, Flickr.

The United Kingdom has a unique opportunity to start rebuilding its fish stocks by taking advantage of the slowdown in commercial fishing caused by the COVID-19 pandemic and ongoing Brexit negotiations that should lead to new policy and legislation.

A new paper by researchers with the University of Southampton, the GEOMAR Helmholtz Centre for Ocean Research and the Sea Around Us initiative at the University of British Columbia presents a science-based pathway for decision-makers to develop a holistic approach in fisheries management by harnessing the present moment in which threatened stocks are seeing fishing pressure reduced to levels not seen since World War II.

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