Wetlands such as brooks, rivers, lakes, springs and marshlands are of great importance for the global water cycle. They usually have a rich biodiversity and act like filters to clean the water. They are also buffer zones and reduce the risk of floods. These important habitats, however, are threatened by hydraulic engineering, draining, eutrophication, pollution, energy production and intensive leisure activities.
To protect wetlands all over the world, the Convention on Wetlands of International Importance was agreed at Ramsar in Iran in 1971. Ramsar sites are listed if they meet international significance of the wetland itself. The Convention aims to protect wetlands of international importance, particularly was waterfowl habitats, fostering national and international sustainable use thus contributing to the realisation of sustainable development world wide. The Convention is founded on three pillars of:
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Promoting the wise use of wetlands
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Developing international co-operation
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Developing a network of Wetland sites of International Importance