| Title | The paleolimnological analysis of sediments from high mountain lake Nizne Terianske pleso in the high Tatras (Slovakia) |
| Abstract | Sedimentological climate proxies and a 200-year long climate record, reconstructed using a data-set of European-wide meteorological data, have been compared at the high mountain lake Niznee Terianske pleso in the High Tatras, Slovakia. Diatoms, chrysophyte stomatocysts, chironomids, plant pigments and spheroidal carbonaceous particles ( SCPs) were analysed as well as sediment lithostratigraphic parameters. Using a radiometric approach the sediment core was dated and a depth of 4.6 cm was found to correspond to 1852 AD. The sediment accumulation rate ( 0.0034 g.cm(-2).yr(-1)) was one of the lowest identified in the European mountain lake project, MOLAR. Despite this slow accumulation rate a remarkably coherent lithological and stratigraphic record has been recovered. The sediments of this remote mountain site, largely free from the effects of direct human impact, have been found to display a wealth of variability over the last 200 years. |
| Source | Journal of paleolimnology 28 (1), pp. 95–109 |
| Keywords | High Tatra Mountainshigh mountain lakelake sedimentsdiatomschrysophyte stomatocystschironomidscarbonaceous particlesplant pigments |
| Journal | Journal of paleolimnology |
| Editor | Kluwer Academic, Boston, Paesi Bassi |
| Year | 2002 |
| Type | Articolo in rivista |
| DOI | 10.1023/A:1020376003123 |
| Authors | Sporka, F; Stefkova, E; Bitusik, P; Thompson, AR; Agusti-Panareda, A; Appleby, PG; Grytnes, JA; Kamenik, C; Krno, I; Lami, A; Rose, N; Shilland, NE |
| Text | 407939 2002 10.1023/A 1020376003123 ISI Web of Science WOS 000178212200007 High Tatra Mountains high mountain lake lake sediments diatoms chrysophyte stomatocysts chironomids carbonaceous particles plant pigments The paleolimnological analysis of sediments from high mountain lake Nizne Terianske pleso in the high Tatras Slovakia Sporka, F; Stefkova, E; Bitusik, P; Thompson, AR; Agusti Panareda, A; Appleby, PG; Grytnes, JA; Kamenik, C; Krno, I; Lami, A; Rose, N; Shilland, NE Slovak Acad Sci; Tech Univ Zvolen; Univ Edinburgh; Univ Liverpool; Univ Bergen; Austrian Acad Sci; Comenius Univ; CNR; UCL Sedimentological climate proxies and a 200 year long climate record, reconstructed using a data set of European wide meteorological data, have been compared at the high mountain lake Niznee Terianske pleso in the High Tatras, Slovakia. Diatoms, chrysophyte stomatocysts, chironomids, plant pigments and spheroidal carbonaceous particles SCPs were analysed as well as sediment lithostratigraphic parameters. Using a radiometric approach the sediment core was dated and a depth of 4.6 cm was found to correspond to 1852 AD. The sediment accumulation rate 0.0034 g.cm 2 .yr 1 was one of the lowest identified in the European mountain lake project, MOLAR. Despite this slow accumulation rate a remarkably coherent lithological and stratigraphic record has been recovered. The sediments of this remote mountain site, largely free from the effects of direct human impact, have been found to display a wealth of variability over the last 200 years. The record of spheroidal carbonaceous particles, indicators of anthropogenic pollution deposition, begins around 4.5 5.0 cm in depth 1833 1857 . Temporal patterns are typical of European lake sites with the concentration peaking in the late 1970 s. The SCP/ 210 Pb inventory ratio for the site is also in good agreement with the European latitudinal pattern. A strong influence of sample age on the chrysophyte assemblage composition in the upper most 4 6 cm indicates that the main changes in the cysts have been related to long term environmental changes, probably pH. Analysis of chironomid remains revealed a stable profundal community. Chironomids as a whole showed no correlations to temperature fluctuations in the last 200 years. Relatively abundant remains of Diamesa sp. head capsules and other taxa closely associated with stream conditions in the older layers contrast with the absence of Diamesa sp. in the recent sediments. This change is considered to be evidence for the existence of a stronger, more stable inlet supplied from permanent granular snow fields in the lake basin. The most important changes in diatom assemblages were observed at 3 cm. Many species of the genus Achnanthes spp. together with Navicula schmassmannii and Orthoseira roeseana made up the greatest part of the diatom community above 3 cm, being absent or rare lower in the record. A positive correlation between diatoms and mean summer temperature was found. 28 Published version Articolo in rivista Kluwer Academic 0921 2728 Journal of paleolimnology Journal of paleolimnology J. paleolimnol. andrea.lami LAMI ANDREA |
