Journal ArticleDOI
The Influence of Catchment Characteristics on the Water Chemistry of Mountain Lakes
TLDR
In this paper, the authors examined the influence of catchment characteristics on water chemistry and found that water chemistry appeared to be mainly determined by (1) chemical weathering of carbonate minerals and (2) in-lake productivity.Abstract:
Forty-four lakes in the Austrian Alps were studied to examine the influence of catchment characteristics on water chemistry. The lakes are located along an altitudinal gradient (1502-2309 m a.s.l.) in a small study area (35.5 km * 15.5 km) without glaciers. Longitude and latitude accounted for 21.4% of the variation in water chemistry. Bedrock mineralogy explained 14.5% of the variation. Vegetation accounted for 13.2% and slope for 5.5% of the variation in water chemistry. No correlations were found between exposure and water chemistry. Water chemistry appeared to be mainly determined by (1) chemical weathering of carbonate minerals and (2) in-lake productivity. Carbonate minerals were assumed to be present in all watersheds. Trees and shrubs enhanced chemical weathering. Concentrations of chemical parameters indicating physical weathering were high in lakes with large, steep catchments. Steep watersheds were correlated with enhanced nitrogen concentrations in the lakes. In-lake productivity obscured relationships between chemical parameters and catchment characteristics. Nonetheless, catchment characteristics explained 45% of the variation in water chemistry, stressing their importance for water chemistry in mountain lakes.read more
Citations
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Fragilaria and Staurosira (Bacillariophyceae) from sediment surfaces of 40 lakes in the Austrian Alps in relation to environmental variables, and their potential for palaeoclimatology
TL;DR: Correlations between the mean valve length and summer water temperatures increase the overall high potential of Fragilaria and Staurosira for palaeoclimatological reconstructions in mountain lakes.
Journal ArticleDOI
Ultra-sensitive Alpine lakes and climate change
TL;DR: In this paper, the authors used temperature data from 45 mountain lakes of the central Austrian Alps (Niedere Tauern) during 1998-2003 at two or four hourly intervals.
Journal ArticleDOI
Regionalisation of chemical variability in European mountain lakes
Lluís Camarero,Michela Rogora,Rosario Mosello,Nicholas J. Anderson,Alberto Barbieri,Ivan Botev,Martin Kernan,Jiří Kopáček,Atte Korhola,André F. Lotter,Gregor Muri,Carmen Postolache,Evžen Stuchlík,Hansjörg Thies,Richard F. Wright +14 more
TL;DR: In this article, the main sources of chemical variability in mountain lakes, defining a chemical classification of lakes, and developing tools to extrapolate their results to regional lake populations through an empirical regionalisation or upscaling of chemical properties.
Journal ArticleDOI
Inorganic nitrogen storage in alpine snow pack in the Central Alps (Switzerland)
TL;DR: In this paper, inorganic ion storage in snow pack at 2500 m (a.s.l.) in the Central Alps, Switzerland, was investigated and the chemical composition of snow was dominated by nitrogenous and sulphate ions.
Journal ArticleDOI
Relationships between land use and nitrogen and phosphorus in New Zealand lakes
TL;DR: In this article, the authors investigated the relationship between land use and in-lake nutrients in New Zealand lakes and found that high producing grassland (intensive pasture) was the best predictor of total nitrogen (TN) and total phosphorus (TP) data.
References
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