The paleolimnological analysis of sediments from high mountain lake Nižné Terianske pleso in the High Tatras (Slovakia)

摘要: Sedimentological climate proxies and a 200-year long record, reconstructed using data-set of European-wide meteorological data, have been compared at the high mountain lake Nižne Terianske pleso in High Tatras, Slovakia. Diatoms, chrysophyte stomatocysts, chironomids, plant pigments spheroidal carbonaceous particles (SCPs) were analysed as well sediment lithostratigraphic parameters. Using radiometric approach core was dated depth 4.6 cm found to correspond 1852 AD. The accumulation rate (0.0034 g·cm−2·yr−1) one lowest identified European project, MOLAR. Despite this slow remarkably coherent lithological stratigraphic record has recovered. sediments remote site, largely free from effects direct human impact, display wealth variability over last 200 years. particles, indicators anthropogenic pollution deposition, begins around 4.5–5.0 (1833–1857). Temporal patterns are typical sites with concentration peaking late 1970's. SCP/210Pb inventory ratio for site is also good agreement latitudinal pattern. A strong influence sample age on assemblage composition upper-most 4–6 indicates that main changes cysts related term environmental changes, probably pH. Analysis chironomid remains revealed stable profundal community. Chironomids whole showed no correlations temperature fluctuations Relatively abundant Diamesa sp. head capsules other taxa closely associated stream conditions older layers contrast absence recent sediments. This change considered be evidence existence stronger, more inlet supplied permanent granular snow fields basin. most important diatom assemblages observed 3cm. Many species genus Achnanthes spp. together Navicula schmassmannii Orthoseira roeseana made up greatest part community above 3 cm, being absent or rare lower record. positive correlation between diatoms mean summer found.