Meunier J. D., Braun Jean-Jacques, Riotte Jean, Kumar C., Sekhar M. (2011). Importance of weathering and human perturbations on the riverine transport of Si. Applied Geochemistry, 26 (Suppl. S), p. S360-S362. ISSN 0883-2927.
Titre du document
Importance of weathering and human perturbations on the riverine transport of Si
Meunier J. D., Braun Jean-Jacques, Riotte Jean, Kumar C., Sekhar M.
Source
Applied Geochemistry, 2011,
26 (Suppl. S), p. S360-S362 ISSN 0883-2927
The global Si cycle is strongly controlled by riverine input. Over the last decade two parameters have been shown to play a significant role in the control of dissolved Si (DSi): biology, through the effects of diatom blooms and vegetation growth, and human activity, through the effects of eutrophication, urbanisation, agriculture, deforestation and damming. Human perturbations should now be better quantified when modelling the global Si cycle and particularly in the tropics. A case study is presented based on preliminary data along the Kaveri river (India) strongly impacted by dams. It is suggested that DSi is controlled by a combined effect of chemical weathering, damming and groundwater recharge.
