The sediment core KES2 (37.94558° N, 22.57641° E) was retrieved from the Kaisari Polje, Peloponnese Greece, in spring 2017 using a piston corer (Stitz type). The sedimentary sequence covers 350 cm (sedimentary units 1 - 7). The concentrations of total nitrogen (TN), total organic carbon (TOC), and total inorganic carbon (TIC) were determined on dried, grinded, and homogenized samples through combustion in an elemental analyzer (Euro EA, Elementanalyzer). The core sequence covers the last 6000 years and was analysed to reconstruct ecosystem and landscape changes as well as palaeoclimatic fluctuations in southern Greece.