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Nesting habitat of Arapaima gigas (Schinz) in Amazonian floodplains


*Present address: Department of Forestry Biology, College of Environmental Science and Forestry, State University of New York, Syracuse, 13210 NY, U.S.A. Tel.: +1 315470 6800; fax: +1 315470 6935; email:


Most nests of Arapaima gigas in floodplains of the Amazon were built at the margins of the forests surrounding temporary or permanent lakes and their connecting channels. They were found under forested levees in locations that were shallow and sandy. From 2000 to 2005, the adult population increased six-fold but nest density increased only two-fold.