| Popis: |
The Plitvice Lakes are a series of lakes, tufa barriers and waterfalls located in the Dinaric Karst in Central Croatia, where calcium carbonate precipitates very intensively forming tufa barriers in presence of macrophytes and microphytes. In our study, which is the part of the EU-project ICA2.CT-2002-10009, we try to identify the source of the eutrophication process to see whether it is a consequence of anthropogenic pollution or process of naturally produced organic matter/humus in the lakes. The ongoing study includes physico-chemical investigations of lake water, isotope hydrology studies in lake waters and karst springs (deuterim and O-18, tritium/He-3, CFC/SF6, C-13 of dissolved inorganic carbon), and geochronology and geochemistry of lake sediments. The C-14 and H-3 activity of monthly samples of atmospheric CO_2 and of precipitation, respectively, in this area is also monitored. |
