Nature – Upendra et al. (2025): Dissolved load, chemical weathering, and CO2 uptake dynamics of small tropical mountainous rivers of Southern Granulite Terrain, Karamana and Vamanpuram, Western Ghats, India

B. Upendra, M. Ciba, S. Rahul, G. Sreenivasulu, S. Kiran Kumar Reddy, V. Arun, K. Anoop Krishnan IN: Nature scientific reports DOI: 10.1038/s41598-025-90913-4

The study delves into the dissolved solute chemistry of two small tropical mountainous rivers in India’s Southern Granulite Terrain (SGT): the Karamana River Basin (KRB) and Vamanapuram River Basin (VRB), together referred as KVRB. Seventy-two water samples (36 per river) that are collected across three seasons are analysed for various physio-chemical parameters using standard methods. A chemical mass balance (CMB) model was employed to quantify solute sources, while silicate weathering rates (SWR), and CO₂consumption rates (CCR) were estimated separately.

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