Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | The effect of climate warming on the hydrochemistry of Alpine Lakes |
| Abstract | The hydrochemistry of mountain lakes is highly conditioned by the chemical composition of atmospheric deposition and by climate characteristics. Consequently these ecosystems have proved to be sensitive to long-term changes in both factors. Climate warming seems to be particularly pronounced in the Alpine region. A reduction of snow cover in space and time, due to less precipitation and higher temperatures, means a greater exposure of rocks and soils in the watersheds, which enhances weathering processes. In this paper we aim to evaluate the possible effect of these processes on long-term changes in the chemistry of alpine lakes. Recent climate changes affecting the study area were investigated through a data series referring to temperature, precipitation, snow depth and duration at some stations in the Ossola Valley. Chemical data of 35 lakes located in the Ossola and Sesia Valleys (Central Alps) were used. Lakes were sampled both in the late summer of 2000 and 2001 in the framework of two European Projects and the results compared with previous data (1984-1987). Two lakes (Boden Superiore and Inferiore, 2343 and 2334 m a.s.l., respectively), located in the northern part of the study area, have been sampled more or less continuously since the late 70s, enabling us to evaluate the trends of the main chemical variables. For lakes lying in catchments with highly soluble rocks, a comparison between the two data sets shows an increase of solute contents in the last few years. This result could be attributed to increased weathering rates due to climate warming. |
| Source | Water, air and soil pollution (Print) 148 (1-4), pp. 347–361 |
| Keywords | alpine lakesCentral Alpsclimate changehydrochemistryweathering |
| Journal | Water, air and soil pollution (Print) |
| Editor | Kluwer Academic Publishers, Dordrecht, Paesi Bassi |
| Year | 2003 |
| Type | Articolo in rivista |
| DOI | 10.1023/A:1025489215491 |
| Authors | Rogora, M; Mosello, R; Arisci, S |
| Text | 350885 2003 10.1023/A 1025489215491 ISI Web of Science WOS 000184990800022 alpine lakes Central Alps climate change hydrochemistry weathering The effect of climate warming on the hydrochemistry of Alpine Lakes Rogora, M; Mosello, R; Arisci, S CNR Istituto per lo Studio degli Ecosistemi The hydrochemistry of mountain lakes is highly conditioned by the chemical composition of atmospheric deposition and by climate characteristics. Consequently these ecosystems have proved to be sensitive to long term changes in both factors. Climate warming seems to be particularly pronounced in the Alpine region. A reduction of snow cover in space and time, due to less precipitation and higher temperatures, means a greater exposure of rocks and soils in the watersheds, which enhances weathering processes. In this paper we aim to evaluate the possible effect of these processes on long term changes in the chemistry of alpine lakes. Recent climate changes affecting the study area were investigated through a data series referring to temperature, precipitation, snow depth and duration at some stations in the Ossola Valley. Chemical data of 35 lakes located in the Ossola and Sesia Valleys Central Alps were used. Lakes were sampled both in the late summer of 2000 and 2001 in the framework of two European Projects and the results compared with previous data 1984 1987 . Two lakes Boden Superiore and Inferiore, 2343 and 2334 m a.s.l., respectively , located in the northern part of the study area, have been sampled more or less continuously since the late 70s, enabling us to evaluate the trends of the main chemical variables. For lakes lying in catchments with highly soluble rocks, a comparison between the two data sets shows an increase of solute contents in the last few years. This result could be attributed to increased weathering rates due to climate warming. 148 Published version The effect of climate warming on the hydrochemistry of Alpine Lakes 5140023.pdf Articolo in rivista Kluwer Academic Publishers 0049 6979 Water, air and soil pollution Print Water, air and soil pollution Print Water, air and soil pollution. Print Water air soil pollut. Print Water, air soil pollution Print ARISCI SILVIA rosario.mosello MOSELLO ROSARIO michela.rogora ROGORA MICHELA |