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    Home > Food News > Food Articles > Coastal mud controls climate-cooled gases

    Coastal mud controls climate-cooled gases

    • Last Update: 2021-03-16
    • Source: Internet
    • Author: User
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    new study by institutions such as the University of East Anglia, the Chinese University of the Ocean and the University of Auckland in New Zealand shows that bacteria found in muddy marshes, estuaries and coastal sediments synthesize one of the richest climate-cooled gases on Earth. The paper was published on August 19th in Nature - Microbes.
    methyl sulfonate (DMSP) is an important nutrient in the marine environment. Every year, marine phytophytoflora, seaweed, corals and bacteria produce billions of tons of DMSP. When marine microbes break down DMSPs, they release a climate-cooled gas called dmS, which also gives the seaside a unique smell. Until recently, DMSPs were thought to be mainly produced by photogaetic algae on the ocean surface.
    , the new study suggests that the molecule is produced in coastal sediments and is much higher than in seawater. The researchers say DMS is produced when microbes break down DMSP, which is important because it affects atmospheric chemistry, cloud formation and potential climate -- reducing sunlight reaching the ocean's surface by increasing cloud droplets.
    team studied salty sediments at sites such as Strecchi and Clay Salt on the North Norfolk coast of the UK. It is well known that such an environment produces a large number of DMSPs and DMS. The researchers found that DMSP levels, DMSPs and DMS synthesis rates in coastal sediments were much higher than in surface seawater. Moreover, these high levels of DMSP do not depend on the presence of rice grass, and similar conditions have been found on other shores where no plants are grown. It was previously thought that rice grass was involved in the production of DMSPs.
    supports our theory that bacteria play an important role in the production of DMSPs in sediments. In addition, the levels of DMSP and the bacteria that produce DMSPs in the deep-sea sediments of the Mariana Trench are much higher than in surface seawater. The researchers say the findings could mean that scientists have been grossly underestimating the molecule's production and its impact on the environment. (Source: Tang Feng, China Science Journal)
    related paper information:
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