Branched glycerol monoalkyl glycerol tetraethers (brGMGTs) and geochemical proxies in soils, SPM and riverbed sediments in the Godavari River basin (India)

Branched Glycerol Monoalkyl Glycerol Tetraethers (brGMGTs) in soils, suspended particulate matter (SPM) and riverbed sediments of the Godavari River basin (India), the largest river of peninsular India that is fed by the Southwest monsoon. Surface soils (0-10 cm) were collected near the Godavari River, and SPM (10-80 L, filtered over 0.7 μm GFF filters) and bulk and fine (≤63 μm) riverbed sediments were collected in a dry (February/March 2015) and wet season (July/August 2015). BrGMGT fractional abundances and concentrations were analysed using ultra high performance liquid chromatography-mass spectrometry. BrGMGT loadings were normalised to Mineral Surface Area (MSA data for soils and dry season sediments from Usman et al., 2018). %TN and C:N were measured in soils and sediments, %TOC was from Kirkels et al. (2021).