The global importance of wetlands

The global importance of wetlands Wetlands are areas where water covers the soil, or is present either at or near the surface of the soil, for all or part of the year. These are complex ecosystems, rich in unique plant and animal life. But according to the World Wide Fund for Nature (WWFN), half of the world’s wetlands have disappeared since 1990 – converted or destroyed for commercial development, drainage schemes and the extraction of minerals and peat. Many of those that remain have been damaged by agricultural pesticides and fertilizers, industrial pollutants, and construction works. Throughout history, humans have gathered around wetlands, and their fertile ecosystems have played an important part in human development. Consequently, they are of considerable religious, historical and archaeological value to many communities around the world. ‘Wetlands directly support the livelihoods and well-being of millions of people,’ says Dr Matthew McCartney, principal researcher and hydrologist at the International Water Management Institute (IWMI). ‘In many developing countries, large numbers of people are dependent on wetland agriculture for their livelihoods.’ They also serve a crucial environmental purpose. ‘Wetlands are one of the key tools in mitigating climate change across the planet,’ says Pieter van Eijk, head of Climate Adaptation at Wetlands International (WI), pointing to their use as buffers that protect coastal areas from sea-level rise and extreme weather events such as hurricanes and flooding. Wetland coastal forests provide food and water, as well as shelter…