A study has found that earth has lost about 4000 sq kilometers of tidal wetlands since 1999. The factors responsible are– rising sea levels, aquaculture, soil erosion and urban expansion.
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These areas include tidal flats, marshes and mangrove forests. The area of tidal wetlands lost is equal to the area covered by the state of Goa. During the same period however, human activities have created about 9700 sq km of tidal wetlands, offsetting the loss by 71%.
Scientists are interested in studying how human activities are affecting the distribution of wetland areas around the world because they are an important element of natural carbon sequestration, they absorb carbon and don’t produce methane.
“Understanding where and when losses and gains of tidal wetlands occur allows us to improve our knowledge of coastal ecosystem ecology, better understand the effects of climate change on coastal ecosystems, support the development of coastal ecosystem management strategies and identify where ecosystem restoration could be implemented to recover lost ecosystem services,” says Dr Nicholas Murray
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