Author/Editor		Catalan, J; Ventura, M; Brancelj, A; Granados, I; Thies, H; Nickus, U; Korhola, A; Lotter, AF; Barbieri, A; Šiško, M
Title		Seasonal ecosystem variability in remote mountain lakes: implications for detecting climatic signals in sediment records
Type		članek
Source		J Paleolimnol
Vol. and No.		Letnik 28, št. 1
Publication year		2002
Volume		str. 25-46
Language		eng
Abstract		Weather variation and climate fluctuations are the main sources of ecosystem variability in remote mountain lakes. Here we describe the main patterns of seasonal variability in the ecosystems of nine lakes in Europe, and discuss the implications for recording climatic features in their sediments. Despite the diversity in latitude and size, the lakes showed a number of common features. They were ice-covered between 5-9 months, and all but one were dimictic. This particular lake was long and shallow, and wind action episodically mixed the water column throughout the ice-free period. All lakes showed characteristic oxygen depletion during the ice-covered-period, which was greater in the most productive lakes. Two types of lakes were distinguished according to the number of production peaks during the ice-free season. (Abstract truncated at 2000 characters)
Descriptors		FRESH WATER METEOROLOGICAL FACTORS ECOSYSTEM OXYGEN TEMPERATURE SEASONS GEOLOGIC SEDIMENTS CHLOROPHYLL HYDROGEN-ION CONCENTRATION NITRATES AMMONIA PHOSPHORUS SULFATES CHLORIDES