Climatic changes perception on the flood pulse in the Pantanal wetland, Brazil

The Pantanal Wetland is recognized as a World Natural Heritage, Ramsar Site and Brazilian Heritage by its biodiversity, cultural diversity and scenic beauty. This research analyzes the perception of 100 pantaneiros, peoples that lives in the Pantanal, distributed on seven traditional communities, about changes in the flood pulse. The following observations were registered: 87%  observed that the rivers are more dry, 81%  that the dry phase of the hydrologic year is lasting longer; 83,5% that the flood phase is shorter, 73,6% that the filling phase is delayed and 86% that the  rising water is more early and more rapid. They attribute these changes to decreasing and displacement of precipitation. Besides the impact of these changes in the regulation of ecosystem services offered by Pantanal to the Paraguay – Parana hydrologic system; production, provision and cultural services, as food security, profit for fisherman and biodiversity are also threatened.