1. Environmental geochemistry in tropical countries
- Author
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Henri Etcheber, Jean-Loup Guyot, Patrick Seyler, Patricia Moreira-Turcq, Lacerda, L.D. (ed.), Abrao, J.J. (ed.), Santelli, E. (ed.), and Duursma, E. (ed.)
- Subjects
chemistry.chemical_classification ,Total organic carbon ,geography ,geography.geographical_feature_category ,ADSORPTION ,Amazon rainforest ,Drainage basin ,chemistry.chemical_element ,Biosphere ,Particulates ,MATIERE ORGANIQUE PARTICULEE ,SEDIMENT ,Nitrogen ,MINERAL ,CARBONE ,COURS D'EAU ,AZOTE ,chemistry ,Geologic time scale ,Environmental chemistry ,Environmental science ,Organic matter ,MATIERE ORGANIQUE DISSOUTE ,REACTION CHIMIQUE - Abstract
Rivers are the principal way by which terrestrial materials are transported to the oceans. The composition of particulate and dissolved materials transported in the river systems is a complex function of different physical, chemical and biological processes occurring in the drainage basin and in the river (Hedges et al. 1986). The organic matter transported by rivers (ca. 500 × 1012 g of organic carbon yr −1 and ca. 14 × 1012 g of organic nitrogen yr−1) represents a major link in the global cycles of bioactive elements (Ittekkot et al. 1983; Spitzy and Ittekkot 1991; Meybeck 1993) which modulates the biosphere over geological time.
- Published
- 2004