Tres escenarios lacustres del Pleistoceno de la Cuenca de Guadix-Baza (Granada)

Abstract

In the Pleistocene Guadix-Baza lacustrine Basin, the different ostracode species are related to the
hydro-geochemical characteristics (mainly salinity) of the subenvironments occurring in each particular
area, whereas the d780 measured in ostracode valves reflects the global climatic conditions.
This lack of correspondence is due to the high sensitivity of ostracodes to a change in the
environmental conditions and, furthermore because of the local characteristics, which can produce
uncertainties in the palaeoenvironmental interpretation. This has been defined as the "mosaic
effect", which is described as the assembly of characteristics typical of a shallow water-body, defined
by its position within the basin, materials of the catchment area, runoff and underground water
inputs, among others, that affect, in a different way, the ecology and geochemistry of nearby waterbodies.
In conclusion, the palaeoenvironmental interpretation cannot only be based on a single
proxy.