@article{fdi:010072031,
  title = {{REY}-{T}h-{U} solute dynamics in the critical zone : combined influence of chemical weathering, atmospheric deposit leaching, and vegetation cycling ({M}ule {H}ole {W}atershed, {S}outh {I}ndia)},
  author = {{B}raun, {J}ean-{J}acques and {R}iotte, {J}ean and {B}attacharya, {S}. and {V}iolette, {A}. and {P}runier, {J}. and {B}ouvier, {V}. and {C}andaudap, {F}. and {M}arechal, {J}. {C}. and {R}uiz, {L}aurent and {P}anda, {S}. {R}. and {S}ubramanian, {S}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he source and proportion of {REY}, {T}h, and {U} exported by groundwater and by the ephemeral stream along with the elemental proportions passing through vegetation have been assessed in the subhumid tropical forested {CZO} of {M}ule {H}ole, {S}outhern {I}ndia. {T}he study relies on a pluriannual hydrogeochemical monitoring combined with a hydrological model. {T}he significant difference between the soil input ({SI}) and output ({SO}) solute fluxes (mmol/km(2)/yr) of {LREE} ({SI}-{SO}513,250-1,500), {HREE} (1,930-235), {T}h (64-12), and {U} (63-25) indicates a strong uptake by roots carried by canopy and forest floor processes. {T}he contribution of atmospheric dust leaching can reach about 60% of {LREE} and 80% of {HREE}. {A}t the watershed scale, the {U} solute flux exported by groundwater (180 mmol/km(2)/yr) mainly originates from the breakdown of primary {U}-bearing accessory minerals and dominates by a factor of 25 the stream flux. {T}he precipitation of authigenic {U}-bearing phases and adsorption onto {F}e-oxides and oxyhydroxides play a significant role for limiting the {U} mobility. {I}n the groundwater, the plagioclase chemical weathering is efficiently traced by the positive {E}u-anomaly. {T}he very low ({REY}) to nil ({T}h) contents are explained by the precipitation of authigenic phases. {I}n the stream flow, dominated by the overland flow (87% of the yearly stream flow), the solute exports (in mmol/km(2)/yr) of {REY} (1,080 for {LREE} and 160 for {HREE}) and of {T}h (14) dominate those by groundwater. {T}heir mobility is enhanced by chelation with organic ligands produced by forest floor and canopy processes.},
  keywords = {{INDE}},
  booktitle = {},
  journal = {{G}eochemistry {G}eophysics {G}eosystems},
  volume = {18},
  numero = {12},
  pages = {4409--4425},
  ISSN = {1525-2027},
  year = {2017},
  DOI = {10.1002/2017gc007158},
  URL = {https://www.documentation.ird.fr/hor/fdi:010072031},
}