| Title | Spatial and temporal trends of target organic and inorganic micropollutants in Lake Maggiore and Lake Lugano (Italian-Swiss water bodies): contamination in sediments and biota |
| Abstract | DDx, PCBs, PBDEs, Hg, and As contamination in sediments and aquatic organisms of different trophic levels (zooplankton, mussel, fish) were analyzed in Lake Maggiore and Lake Lugano, two large deep perialpine lakes. In the period 2001-2015, we analyzed the spatial and temporal trends of the considered pollutants to detect potential contamination sources and to compare concentrations with Sediment Quality Guidelines (SQGs) or existing Quality Standards (QSs). DDx and Hg contamination deriving from past industrial activities in the Pallanza Basin still exceeded SQGs in sediments and QSs in fish, with potential risks for the ecosystem. Banned in Europe in 1985, PCBs showed low residual values, while recent PBDE peaks resulted in the exceedance of the QSs for biota in both lakes, probably due to current industrial activities. Arsenic mainly derives from geochemical origin. The analysis of the biomagnification of toxicants in a pelagic food chain in Lake Maggiore (zooplankton-fish) according to a stable isotope approach is also presented, according to both the Trophic Magnification Factor and the Trophic Level-adjusted BioMagnification Factor: the importance of seasonality and a Hg > DDx ? PBDEs biomagnification capacity were observed. Low PCB bioaccumulation was detected in biota, probably because equilibrium was not reached yet in young fish. |
| Source | Hydrobiologia (The Hague. Print), pp. 1–20 |
| Keywords | toxicantsdeep alpine lakesbiomagnificationfood chain |
| Journal | Hydrobiologia (The Hague. Print) |
| Editor | Kluwer Academic Publishers, Boston, Paesi Bassi |
| Year | 2018 |
| Type | Articolo in rivista |
| DOI | 10.1007/s10750-017-3494-7 |
| Authors | Guzzella L.M.; Novati S.; Casatta N.; Roscioli C.; Valsecchi L.; Binelli A.; Parolini M.; Solca N.; Bettinetti R.; Manca M.; Mazzoni M.; Piscia R.; Volta P.; Marchetto A.; Lami A.; Marziali L. |
| Text | 384647 2018 10.1007/s10750 017 3494 7 Scopus 2 s2.0 85040354341 toxicants deep alpine lakes biomagnification food chain Spatial and temporal trends of target organic and inorganic micropollutants in Lake Maggiore and Lake Lugano Italian Swiss water bodies contamination in sediments and biota Guzzella L.M.; Novati S.; Casatta N.; Roscioli C.; Valsecchi L.; Binelli A.; Parolini M.; Solca N.; Bettinetti R.; Manca M.; Mazzoni M.; Piscia R.; Volta P.; Marchetto A.; Lami A.; Marziali L. DiSTA, Universita degli Studi dell Insubria, Como, , Italy; Dipartimento di Bioscienze, Universita degli Studi di Milano, Milan, , Italy; Pallanza, , Italy DDx, PCBs, PBDEs, Hg, and As contamination in sediments and aquatic organisms of different trophic levels zooplankton, mussel, fish were analyzed in Lake Maggiore and Lake Lugano, two large deep perialpine lakes. In the period 2001 2015, we analyzed the spatial and temporal trends of the considered pollutants to detect potential contamination sources and to compare concentrations with Sediment Quality Guidelines SQGs or existing Quality Standards QSs . DDx and Hg contamination deriving from past industrial activities in the Pallanza Basin still exceeded SQGs in sediments and QSs in fish, with potential risks for the ecosystem. Banned in Europe in 1985, PCBs showed low residual values, while recent PBDE peaks resulted in the exceedance of the QSs for biota in both lakes, probably due to current industrial activities. Arsenic mainly derives from geochemical origin. The analysis of the biomagnification of toxicants in a pelagic food chain in Lake Maggiore zooplankton fish according to a stable isotope approach is also presented, according to both the Trophic Magnification Factor and the Trophic Level adjusted BioMagnification Factor the importance of seasonality and a Hg > DDx PBDEs biomagnification capacity were observed. Low PCB bioaccumulation was detected in biota, probably because equilibrium was not reached yet in young fish. Published version http //www.scopus.com/record/display.url eid=2 s2.0 85040354341 origin=inward Spatial and temporal trends of target organic and inorganic micropollutants in Lake Maggiore and Lake Lugano Italian Swiss water bodies s10750 017 3494 7.pdf Articolo in rivista Kluwer Academic Publishers 0018 8158 Hydrobiologia The Hague. Print Hydrobiologia The Hague. Print Hydrobiologia The Hague. Print Hydrobiologia. The Hague. Print Hydrobiologia Dordrecht The Hague. Print Hydrobiologia Boston The Hague. Print Hydrobiologia London The Hague. Print lucia.valsecchi VALSECCHI LUCIA CASATTA NADIA marinamarcella.manca MANCA MARINA MARCELLA NOVATI STEFANO aldo.marchetto MARCHETTO ALDO liciamaria.guzzella GUZZELLA LICIA MARIA roberta.piscia PISCIA ROBERTA claudiogiovanni.roscioli ROSCIOLI CLAUDIO GIOVANNI andrea.lami LAMI ANDREA pietro.volta VOLTA PIETRO laura.marziali MARZIALI LAURA |
