Reconstruction of long-term changes in lake water chemistry, zooplankton and benthos of a small, acidified high-mountain lake: magic modelling and palaeolimnogical analysis

0150468 - HBU-Z 20023104 RIV NL eng J - Článek v odborném periodiku
Stuchlík, E. - Appleby, P. - Bitušík, P. - Curtis, C. - Fott, J. - Kopáček, Jiří - Pražáková, M. - Rose, N. - Strunecký, O. - Wright, R. F.
Reconstruction of long-term changes in lake water chemistry, zooplankton and benthos of a small, acidified high-mountain lake: magic modelling and palaeolimnogical analysis.
Water, Air, & Soil Pollution: Focus. Roč. 2, č. 2 (2002), s. 127-138. ISSN 1567-7230
Grant ostatní: EC(XE) MOLAR ENV4-CT95-007; EC(XE) EMERGE EVK1-CT1999-00032
Klíčová slova: modeling * palaeolimnology * hydrochemistry
Kód oboru RIV: DA - Hydrologie a limnologie

Starolesnianske pleso (SP) is a small acid lake in the High Tatra Mts., situated at 2000 m above sea level, on granitic bedrock, with sparse and thin soil cover. When detailed measurements began in the 1980's, SP had pH below 5 and only one species of cladoceran zooplankton, the ubiquitous Chydorus sphaericus. Palaeolimnological investigations show changes in cladoceran zooplankton and chironomid zoobenthic assemblages since about 1920 and a major change in 1970-80. The dynamic acidification model MAGIC was used to reconstruct changes in water chemistry over the past 150 years. The results from MAGIC agree well with the sediment record; pH levels gradually decreased from 6.5 in the mid-1800's to about 5.6 in 1920 (first response in biota) to below 5.0 by 1970, and concentrations of inorganic aluminium rose dramatically beginning about 1960. In the 1990's the lake water chemistry showed clear signs of reversal in acidification brought about by a major decline in S deposition.
Trvalý link: http://hdl.handle.net/11104/0048001