Hyperspectral measurements of Amsoldingersee sediment core, Switzerland

This table contains all high-resolution hyperspectral data accompanying Schouten et al., 2025 in prep. All analytical data were attained from a sediment core taken in Amsoldingersee (46°43'N; 07°34'E; 641 m.a.s.l.); an endorheic, small (38 ha; 13 m deep) lake in the Aare valley, located in the Swiss Plateau. The data was collected to get a comprehensive understanding of the interaction between, algal communities, anoxia, temperature and total trophic productivity in the timeframe 11 ka BP - 17 ka BP. Data were attained between January-August 2023. Sediments were collected using a piston corer in 3m segments (UWITEC - style). The sediment cores were cut in 1m pieces and subsampled. The age-depth relationship is established with a Bayesian model blending 9 14C dates, 3 biostratigraphical markers, and the Laacher see ash layer. Hyperspectral data were derived from scans made with Specim PFD-CL-65-V10E line scan camera, which measures the absorbance of light in the visible and near-infrared spectrum (400-1000nm; 1nm spectral resolution; 8 Hz; 120 seconds exposure). Index values of RABD667 (total chlorophyll a) and RABD844 (total bacteriochlorophyll a) were calibrated against pigment concentration values using linear regression to discrete samples, whereby pigment concentrations were measured using a UV-VIS Spectrophotometer Shimadzu UV-1800. RABD619 is a proxy for phycocyanin, a pigment produced by cyanobacteria.