A Story of the Wetland Water Quality Deterioration: Salinization, Pollution, Eutrophication and Siltation

摘要: Water quality has historically relied upon wetland openness and water availability. For many years until 1986, Las Tablas de Daimiel was enabled to export materials downstream, thus diminishing the impairing effects of pollutant storage. Since 1987, when dammed, good-quality inputs low-salinity groundwater were discontinued, streams directed urban agricultural wastewater towards wetland, discharge rather low, due exhaustion in catchment and, hence, its internal loading had greatly increased. As a result, salinization, pollution eutrophication increased both sediments, siltation appeared as severe threat. This chapter will review long-term patterns (1945–2007) these processes, paying special attention connectivity downstream.