| Title | Fourteen years of palaeolimnological research of a past industrial polluted lake (L. Orta, Northern Italy): An overview. |
| Abstract | The first sediment core analyses were carried out in 1958, but it is only from 1985 onward that a modern palaeolimnological approach was applied to the study of Lake Orta, a large and deep lake in North Italy, heavily polluted by ammonia and copper for about 50 and 30 years, respectively. Thus, we summarise those studies from a variety of sediment cores, collected in different years and sites, using both published and unpublished data. Changes in algal pigments (mainly chlorophyll derivatives, total and single carotenoids), inorganic geochemistry, especially heavy metals (e.g. Cu), diatoms, Cladocera, and thecamoebians were studied and related to the stressed environment. The whole picture reveals a close relationship between modifications in algal biomass, density, taxonomic composition and organisms size on the one hand, and water chemistry changes on the other hand. Long-term history of this lake over 7-8 centuries, including invertebrate and terrestrial vegetation dynamics (pollen stratigraphy), reveals close relationship with natural (climate) and anthropogenic forces. |
| Source | Journal of limnology (Testo stamp.) 60 (2), pp. 249–262 |
| Journal | Journal of limnology (Testo stamp.) |
| Editor | Istituto per lo Studio degli Ecosistemi., Verbania Pallanza, Italia |
| Year | 2001 |
| Type | Articolo in rivista |
| Authors | Guilizzoni, Piero; Lami, Andrea; Marchetto, Aldo; Appleby, Peter G.; Alvisi, Francesca |
| Text | 290813 2001 ISI Web of Science WOS BCI200300001357 Fourteen years of palaeolimnological research of a past industrial polluted lake L. Orta, Northern Italy An overview. Guilizzoni, Piero; Lami, Andrea; Marchetto, Aldo; Appleby, Peter G.; Alvisi, Francesca CNR Istituto Italiano di Idrobiologia, Largo Tonolli 50, I 28922, Verbania Pallanza, Italy Dept. of Applied Mathematics and Theoretical Physics, University of Liverpool, P.O. Box 147, Liverpool L69 3BX, U.K. CNR Istituto di Scienze Marine, Via P. Gobetti 101, I 40129, Bologna, Italy The first sediment core analyses were carried out in 1958, but it is only from 1985 onward that a modern palaeolimnological approach was applied to the study of Lake Orta, a large and deep lake in North Italy, heavily polluted by ammonia and copper for about 50 and 30 years, respectively. Thus, we summarise those studies from a variety of sediment cores, collected in different years and sites, using both published and unpublished data. Changes in algal pigments mainly chlorophyll derivatives, total and single carotenoids , inorganic geochemistry, especially heavy metals e.g. Cu , diatoms, Cladocera, and thecamoebians were studied and related to the stressed environment. The whole picture reveals a close relationship between modifications in algal biomass, density, taxonomic composition and organisms size on the one hand, and water chemistry changes on the other hand. Long term history of this lake over 7 8 centuries, including invertebrate and terrestrial vegetation dynamics pollen stratigraphy , reveals close relationship with natural climate and anthropogenic forces. 60 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 piero.guilizzoni GUILIZZONI PIERO francesca.alvisi ALVISI FRANCESCA andrea.lami LAMI ANDREA |
