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Published online by Cambridge University Press: 24 August 2009
The watershed of the Upper Napo River (UNR), in the western portion of Napo Province in Amazonian Ecuador, holds one of the most species-rich tropical forests known on Earth. It is an area in which agricultural development and associated forest destruction are at loggerheads with conservation of biodiversity. This essay briefly describes the major factors that influence and threaten biodiversity in the UNR watershed.