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Man-made change in wetland ecosystems is mainly a 20th century process. Here, we report the changes over the last 55 years in the hydrology and botany of a Spanish semi-arid wetland, Las Tablas de Daimiel, a Ramsar site and a National Park. The landscape is valuable because of interesting waterfowl and plant species (particularly, Netta ruffina and Cladium mariscus) brought about by the fluctuations...