Completion of 'World Fisheries Map' that no one knew until now
Fishing is one of the oldest industries and is practiced not only in Japan but all over the world. However, it was not possible to monitor the fishing industry, and no one knew where ships around the world were operating on the planet. According to the results of a survey by David Cruzma and others of
Tracking the global footprint of fisheries
https://www.science.org/doi/10.1126/science.aao5646
New maps show the utterly massive imprint of fishing on the world's oceans --The Washington Post
https://www.washingtonpost.com/news/energy-environment/wp/2018/02/22/new-maps-show-the-utterly-massive-imprint-of-fishing-on-the-worlds-oceans/
The survey is being conducted jointly by Global Fishing Watch, Oceana , SkyTruth , and Google , and is transmitted and received by the Automatic Identification System (AIS) installed on approximately 70,000 vessels in creating the 'fishery map.' Billions of signal data have been collected and analyzed. As a result, the actual situation that could not be quantified until now became clear. In 2016, fishing was carried out in more than 55% of the world's ocean area, showing that it is about four times as large as the area occupied by onshore agricultural activity. It was also revealed that the time spent on fishing activities amounted to more than 40 million hours.
The results of this survey also seem to give a glimpse of the problem of overfishing in the open sea, which is not strictly regulated, and is published by the Food and Agriculture Organization of the United Nations (FAO) ( PDF file) . As of 2013, 31.4% of the world's fishery resources are in a state of so-called overfishing, and the appropriate fishing industry is only 58.4%.
Most of the fishing countries are mainly in their own economic zones, but Spain, Taiwan, Japan, South Korea and China account for more than 85% of the fishing in the high seas. Shown in the data.
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'The data presented in this study are no different from traditionally used catch data, but so far,' said Jeremy Jackson, a marine science specialist at the Scripps Institution of Oceanography. It's great to be confident that the data we were using was accurate. '
'This study adds a new perspective as a toolkit for scientists and fisheries managers,' said Daniel Pauly of the University of British Columbia , a world-renowned fishery expert. It promotes the opinion that all fishing vessels should be obliged to install AIS. In the future, it will also prevent overfishing by small vessels that are not currently obliged to install AIS. ' , I highly appreciate the announcement of the results of this survey.
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According to a research team such as Kruzma, fishing activities tend to increase or decrease due to politics and culture rather than fish movement and seasons. It seems that there is no decline in fishing activity during the period when fuel prices are soaring, but for example, in the Chinese New Year , fishing activity by Chinese fishing vessels will almost disappear, and it will drop to a level comparable to the government-enforced fishing ban period. I heard that I understood.
By Kyle, Liana, Isabella & Xavier
The data from this study will help governments, management bodies and researchers achieve their fishing ground conservation and sustainability goals by better regulating their fishing industry.
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