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Freshwater ecosystems are aquatic systems which contain drinkable water or water of almost no salt content. Freshwater resources include lakes and ponds rivers and streams reservoirs wetlands and groundwater. The world derives many benefits from these freshwater resources. They provide the majority of our drinking water resources water resources for agriculture industry sanitation as well as food including fish and shellfish. They also provide recreational opportunities and a means of transportation. In addition freshwater ecosystems are home to numerous organisms. It has been estimated that 40 per cent of all known fish species on Earth come from freshwater ecosystems.
Despite all of their value and importance many freshwater ecosystems are being severely damaged by human activities. The major threats to freshwater biodiversity include runoff from agricultural and urban areas the invasion of exotic species and the creation of dams and water diversion.
This book examines the impacts of environmental change on freshwater ecosystems. It considers the interactions between climate change and other drivers of change including hydro morphological modification nutrient loading acid deposition and contamination by toxic substances. It evaluates the processes in relation to extreme events seasonal changes in ecosystems trends over decadal-scale time periods mitigation strategies and ecosystem recovery.
This is an ideal book for the scientific research community but is also accessible to masters and senior undergraduate students.
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