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 (1984-87). 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 & soil pollution (Dordrecht. Online) 148, pp. 347–361 |
| Keywords | alpine lakesCentral Alpsclimate changehydrochemistryweathering |
| Journal | Water, air & soil pollution (Dordrecht. Online) |
| Editor | Kluwer, Dordrecht, Paesi Bassi |
| Year | 2003 |
| Type | Articolo in rivista |
| Authors | Rogora M., Mosello R., Arisci S. |
| Text | 52759 2003 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. 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 87 . 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 Il lavoro e stato prodotto nellambito dei Progetti UE EMERGE European Mountain lake Ecosystems Regionalisation, diaGnostic socio economic Evaluation e RECOVER 2010 Predicting recovery in acidified freshwater by the year 2010 and beyond . Impact Factor 2002 della Rivista 0.772 Articolo in rivista Kluwer 1573 2940 Water, air soil pollution Dordrecht. Online Water, air soil pollution Dordrecht. Online Water, air soil pollution. Dordrecht. Online Water, air, and soil pollution Dordrecht. Online michela.rogora ROGORA MICHELA rosario.mosello MOSELLO ROSARIO |