Paleolimnological study in two karstic lakes: climate signal in varved sediment and phototrophic organisms variability

2007

This paleolimnological research work was focused on the analysis of the temporal variability of the primary producers community of two close karstic lakes, La Cruz and Lagunillo del Tejo (Cuenca, Spain). Photosynthetic pigments preserved in lake sediments were considered as the most suitable biomarker because of their taxonomic specifity and the accurate understanding of the transference from the water column into sedimentary signal by means of an experimental study about the sedimentation processes carried out over three annual cycles in Lake La Cruz. The multidimensional statistical analysis of the pigments stratigraphic profiles showed the site specific responses to different forcing fac…