According to the US National Atmospheric and Hai Duong Management Authority (NOAA), the dead zone is the underwater areas with low oxygen so that no sea creatures can exist there.02 / 1: 51 The Mexican Gulf Satellite Hall in 2009. Photo: Nasa Tai Sputnik led Noaa's announcement recently said US scientists discovered a giant dead zone at the bottom of the Gulf of Mexico. Normally, the average area of death is about 13.900km wide, the newly found area is about 16,500 square kilometers, or equivalent to more than 4 million hectares of the living environment for marine creatures
. Nancy Rabalais, Church At Louisiana State University, the head of the study said: "The distribution of so low soluble oxygen is abnormal in the summer. This phenomenon occurs very close to the coast with almost complete places Lack of oxygen ". Dead regions occur naturally, the researchers said people have led to abnormal expansion of these areas
Agricultural wastewater from farms and breeding areas flow into ocean and sea, affecting the development of algae that causes them to die mass. In this process, the oxygen consumption bacteria will decompose algae when they are sinking to the sea bottom and lead to the formation of dead areas. NOAA, most sea creatures will die, or if they can move, they will leave Get the inappropriate areas to live. However, only in contact with these biological desert areas can also lead to negative consequences, such as changing the diet, growth and reproduction of fish. The dead zone also makes some species, such as shrimp, becomes rarer. The research group is planning to check the dead zone to find ways to reduce the size as well as minimize its impact on marine resources and background Economy. "This year, we continue to witness the profound impact that climate change caused to humans, from historic drought in the west to flooding. Climate is also directly related to Seawater, including polluted nutrients into the Gulf of Mexico ", Assistant Radhika Fox Water Environmental Protection Agency emphasized in the published version on the website / News Newspaper . Dịch vụ:
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