A delta is a landform that is created at the mouth of a river where that river flows into an ocean, sea, estuary, lake, reservoir, flat arid area, or another river. Deltas are formed from the deposition of the sediment carried by the river as the flow leaves the mouth of the river. Over long periods of time, this deposition builds the characteristic geographic pattern of a river delta. This book presents current research on river deltas from across a broad spectrum including such topics as the current carbon source in the Sacramento-San Joaquin Delta of California; limnology of the Nile Delta Lakes; soil fertility changes of the Yangtze River Delta region; the Ebro Delta on the Spanish Northeast Mediterranean coast and a political and ecological perspective on the Pearl River Delta of China
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