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DatoValore
TitleMacroinvertbrates as indicators of acidification of high-altitude Alpine lakes
AbstractHigh-altitude lakes, due to climatic factors, shallow soil cover, little vegetation, modest dimension of the watershed, long iced surface and rapid flushing rates are known to be particularly sensitive to atmospheric pollution (Wathne et al. 1995). In response to decreased atmospheric acid deposition, lakes in the Western Alps showed signs of chemical recovery since the mid 1990s (Rogora et al. 2003; Steingruber and Colombo, 2010). Neverthless, examples of biological recovery are still rare (Marchetto et al. 2004). Moreover, using benthic macroinvertebrates to assess acidification, for highaltitude Alpine lakes a specific method has not yet been developed. Unfortunately, because of the small data set (macroinvertebrate data from only 5 lakes in Southern Switzerland) the development of such a method goes beyond our possibilities. Instead, the aim of this study was to apply different already existing metrics to macroinvertebrate samples from lakes with different pH (from acid sensitive to alkaline), with the purpose to find which reflects best differences in lake acidity in order to improve temporal assessment of acidification through benthic macroinvertebrates in high-altitude Alpine lakes in Southern Switzerland.
SourceICP Waters - XXVIII Task Force meeting of the ICP Waters Programme, Verbania Pallanza, 8-10 ottobre 2012
KeywordsMacroinvertebratiAcidificazioneLaghi alpiniCanton Ticino
Year2013
TypeContributo in atti di convegno
AuthorsSandra M. Steingruber; Angela Boggero; Luca Colombo
Text287759 2013 Macroinvertebrati Acidificazione Laghi alpini Canton Ticino Macroinvertbrates as indicators of acidification of high altitude Alpine lakes Sandra M. Steingruber; Angela Boggero; Luca Colombo Steingruber, Sandra M. Office for air, climate and renewable resources, Department of the territory of Canton Ticino Switzerland ; Boggero, Angela CNR ISE, Pallanza Verbania; Colombo, Luca Department for Environment Constructions and Design, University of Applied Sciences and Arts of Southern Switzerland SUPSI , Canobbio Switzerland High altitude lakes, due to climatic factors, shallow soil cover, little vegetation, modest dimension of the watershed, long iced surface and rapid flushing rates are known to be particularly sensitive to atmospheric pollution Wathne et al. 1995 . In response to decreased atmospheric acid deposition, lakes in the Western Alps showed signs of chemical recovery since the mid 1990s Rogora et al. 2003; Steingruber and Colombo, 2010 . Neverthless, examples of biological recovery are still rare Marchetto et al. 2004 . Moreover, using benthic macroinvertebrates to assess acidification, for highaltitude Alpine lakes a specific method has not yet been developed. Unfortunately, because of the small data set macroinvertebrate data from only 5 lakes in Southern Switzerland the development of such a method goes beyond our possibilities. Instead, the aim of this study was to apply different already existing metrics to macroinvertebrate samples from lakes with different pH from acid sensitive to alkaline , with the purpose to find which reflects best differences in lake acidity in order to improve temporal assessment of acidification through benthic macroinvertebrates in high altitude Alpine lakes in Southern Switzerland. Proceedings of the XXVIII Task Force meeting of the ICP Waters Programme 978 82 577 6207 0 Published version In ICP Waters XXVIII Task Force meeting of the ICP Waters Programme Verbania Pallanza, 8 10 ottobre 2012 . Proceedings, vol. 112 pp. 21 26. ICP Water Report . NIVA Norwegian Institute for Water Research, 2013. ICP Waters XXVIII Task Force meeting of the ICP Waters Programme Verbania Pallanza 8 10 ottobre 2012 Internazionale Contributo Proceedings Proceedings_Pallanza_112_2013_ICP_WATERS_21_26.pdf Contributo in atti di convegno angela.boggero BOGGERO ANGELA TA.P02.014.002 Impatto dei cambiamenti globali sugli ecosistemi acquatici