A fish-based index of large river quality for French Guiana (South America): method and preliminary resultsFrancisco Leonardo Tejerina-Garro, Bernard de Mérona, Thierry Oberdorff and Bernard HuguenyAquat. Living Resour., 19 1 (2006) 31-46DOI: https://doi.org/10.1051/alr:2006003