| Title | The water chemistry of some shallow lakes in Northern Patagonian and their nitrogen status in comparison with remote lakes in different regions of the globe |
| Abstract | Eighteen small shallow lakes located in the Northern Patagonian Lake District, in southern South America, were sampled in 2001 and analysed for the main chemical variables (pH, conductivity, alkalinity, major ions and nutrients). The study lakes span a wide geographical and altitudinal range and belong partly to the Pacific and partly to the Atlantic watershed. The main aim of this study was to investigate the relationships between water chemistry and physical/geographical properties of these lakes. Secondly, the nitrogen content of the lakes was considered in detail, and results compared to those obtained in previous studies carried out in other remote areas of the globe (the Central Southern Alps in Italy, the Sierra da Estrela region in Portugal, the Svalbard Islands in the Arctic, the Khumbu-Himal region in Nepal, and the Terra Nova Bay area in Antarctica). In the Alps, lakes are characterised by markedly high nitrogen concentrations, manly as nitrate, due to the high inputs of nitrogen compounds from downwind sources like the Po Plain in Northern Italy. Conversely, lakes at remote locations such as the Andes, Antarctica and Himalaya are characterised by a low nitrogen content, mainly as organic nitrogen. This status is related to the limited atmospheric inputs of nitrogen affecting these regions. |
| Source | Journal of limnology (Testo stamp.) 67 (2), pp. 75–86 |
| Keywords | nitrateatmospheric depositionAlpsNepalAntarctica |
| Journal | Journal of limnology (Testo stamp.) |
| Editor | Istituto per lo Studio degli Ecosistemi., Verbania Pallanza, Italia |
| Year | 2008 |
| Type | Articolo in rivista |
| Authors | Rogora M.(1); Massaferro J.(2); Marchetto A.(1); Tartari G.A.(1); Mosello R.(1) |
| Text | 53033 2008 ISI Web of Science WOS 000261475800001 nitrate atmospheric deposition Alps Nepal Antarctica The water chemistry of some shallow lakes in Northern Patagonian and their nitrogen status in comparison with remote lakes in different regions of the globe Rogora M. 1 ; Massaferro J. 2 ; Marchetto A. 1 ; Tartari G.A. 1 ; Mosello R. 1 1 CNR Institute of Ecosystem Study, L.go V. Tonolli 50, 28922 Verbania Pallanza, Italy 2 INIBIOMA/CONICET, Bariloche Argentina Eighteen small shallow lakes located in the Northern Patagonian Lake District, in southern South America, were sampled in 2001 and analysed for the main chemical variables pH, conductivity, alkalinity, major ions and nutrients . The study lakes span a wide geographical and altitudinal range and belong partly to the Pacific and partly to the Atlantic watershed. The main aim of this study was to investigate the relationships between water chemistry and physical/geographical properties of these lakes. Secondly, the nitrogen content of the lakes was considered in detail, and results compared to those obtained in previous studies carried out in other remote areas of the globe the Central Southern Alps in Italy, the Sierra da Estrela region in Portugal, the Svalbard Islands in the Arctic, the Khumbu Himal region in Nepal, and the Terra Nova Bay area in Antarctica . In the Alps, lakes are characterised by markedly high nitrogen concentrations, manly as nitrate, due to the high inputs of nitrogen compounds from downwind sources like the Po Plain in Northern Italy. Conversely, lakes at remote locations such as the Andes, Antarctica and Himalaya are characterised by a low nitrogen content, mainly as organic nitrogen. This status is related to the limited atmospheric inputs of nitrogen affecting these regions. 67 Articolo pubblicato 8_JLimnol_2008.pdf Articolo in rivista Istituto per lo Studio degli Ecosistemi. 1129 5767 Journal of limnology Testo stamp. Journal of limnology Testo stamp. J. limnol. Testo stamp. Journal of limnology. Testo stamp. aldo.marchetto MARCHETTO ALDO michela.rogora ROGORA MICHELA rosario.mosello MOSELLO ROSARIO gabriele.tartari TARTARI GABRIELE TA.P02.026.002 Limnologia e paleolimnologia di laghi di alta quota |
