According to a recent study, the technique of catching with the trawl nets at the bottom layer is more harmful to the environment than people think. Although it has long been known that this method indiscriminately catches fish, no data is available on its carbon footprint. A recent study found that this fishing method releases carbon emissions from the ocean bed.
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Research, published in naturebe the first to give a clear estimate of the carbon footprint of bottom traction. In this technique, the nets are pulled along the ocean floor, scrape for fish and other Ocean creature. This significantly damages a significant portion of the fish’s habitat and releases CO2 that has been captured on the seabed.
The study divided the oceans into blocks of 50 square kilometers and used collected data to measure how much each square block contributes to marine life to fish stocks, Biodiversity and salinity among other aspects.
Researchers estimate that bottom trawling releases about one gigaton carbon emissions into the annual atmosphere, which means that this fishing method alone contributed more carbon to the atmosphere than the aviation industry at the pre-pandemic level. This also interferes with the seabed’s ability to continue to absorb and store carbon. In addition to pollution, fish habitat is destroyed and the indiscriminate fishing of species leads to a decrease in diversity.
Based on Enric Sala, lead author, marine biologist and National Geographic’s Explorer in Residence, the team that initially began looking to discredit this approach to fishing to encourage industry insiders and governments to end it. Scientists have tried to petition governments against bottom drag due to its effects on marine habitats. Bottom net fishing is also one of the activities Expensive fishing methods and most destructive. Sala explained that most of the fishing companies that depend on the bottom trawl fisheries rely on government subsidies to keep their operations. The team hopes this study will make people think twice about allowing the bottom pull activity to continue.
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