Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | FACTORS AFFECTING WATER CHEMISTRY OF ALPINE LAKES |
| Abstract | During a four-year study (1988-1991), 413 lakes in the Central Alps (Italy, Switzerland and Austria) were investigated to quantify their acidification. The ionic content of the lakes was generally low: 68% of them had alkalinity values of less than 200 mueq 1(-1) and were regarded as sensitive to acidification. Moreover, 36% of the lakes showed alkalinity values of less than 50 mueq 1(-1). Redundancy Analysis was used to relate the hydrochemistry of 187 lakes to their catchment characteristics. Calcite weathering was the main factor influencing lake chemistry. The same analysis, applied to a subset of 101 lakes lying in watersheds exclusively composed of silicic rocks, showed that lake chemistry was influenced by silicate weathering and nitrogen uptake. These processes were found to be mainly related to lake altitude and the fraction of the watershed not covered by vegetation, i.e. controlled by temperature. The importance of these relations to explain the pH shift produced by climatic variation is also discussed. |
| Source | Aquatic sciences (Print. ed.) 57 (1), pp. 81–89 |
| Keywords | ALPINE LAKESHYDROCHEMISTRYACIDIFICATION |
| Journal | Aquatic sciences (Print. ed.) |
| Editor | Birkhäuser, Basel, Svizzera |
| Year | 1995 |
| Type | Articolo in rivista |
| DOI | 10.1007/BF00878028 |
| Authors | MARCHETTO, A; MOSELLO, R; PSENNER, R; BENDETTA, G; BOGGERO, A; TAIT, D; TARTARI, GA |
| Text | 353309 1995 10.1007/BF00878028 ISI Web of Science WOS A1995QU74800007 ALPINE LAKES HYDROCHEMISTRY ACIDIFICATION FACTORS AFFECTING WATER CHEMISTRY OF ALPINE LAKES MARCHETTO, A; MOSELLO, R; PSENNER, R; BENDETTA, G; BOGGERO, A; TAIT, D; TARTARI, GA LAB BIOL PROVINCIALE; object Object During a four year study 1988 1991 , 413 lakes in the Central Alps Italy, Switzerland and Austria were investigated to quantify their acidification. The ionic content of the lakes was generally low 68% of them had alkalinity values of less than 200 mueq 1 1 and were regarded as sensitive to acidification. Moreover, 36% of the lakes showed alkalinity values of less than 50 mueq 1 1 . Redundancy Analysis was used to relate the hydrochemistry of 187 lakes to their catchment characteristics. Calcite weathering was the main factor influencing lake chemistry. The same analysis, applied to a subset of 101 lakes lying in watersheds exclusively composed of silicic rocks, showed that lake chemistry was influenced by silicate weathering and nitrogen uptake. These processes were found to be mainly related to lake altitude and the fraction of the watershed not covered by vegetation, i.e. controlled by temperature. The importance of these relations to explain the pH shift produced by climatic variation is also discussed. 57 Published version high altitude lakes chimica 1995_Aquatic_Sci_Marchettoetal.pdf Articolo in rivista Birkhauser 1015 1621 Aquatic sciences Print. ed. Aquatic sciences Print. ed. Aquat. sci. Print. ed. Aquatic sciences. Print. ed. angela.boggero BOGGERO ANGELA |