| Title | Biofilm and Rivers: The Natural Association to Reduce Metals in Waters |
| Abstract | This article focuses on a very peculiar habitat, the thin biofilm that covers the surface of rocks, cobbles, sediment grains, leaf litter, and vegetation on a riverbed. Species composition changes over time and depends on environmental conditions and perturbation of water quality. It provides several ecosystem services, contributing to the biogeochemical fluxes and reducing contamination by absorbing the pollutants. Biofilm into the Toce River (Ossola Valley, Piedmont, Italy) was investigated to assess its capacity to accumulate the metals and macroions from the water column. In this preliminary work, we investigated three sample points, in two different seasons. The community composition of biofilm was determined via morphological analysis (diatoms and non-diatoms algal community). We characterize the biofilm, a community of different organisms, from different perspectives. In the biofilm, Hg was analyzed with an automated mercury analyzer, other metals and macroions with inductively coupled plasma mass spectrometry (ICP-MS) (Al, As, Ba, Ca, Cr, Cu, Fe, K, Mg, Mn, Ni, P, Pb, and Zn), and the carotenoid and chlorophyll composition of the photosynthetic organism with HPLC analysis for the primary producers. The results evidence a seasonal pattern in metals and macroions levels in the biofilm, and a significant difference in the biofilm community and in carotenoid composition, suggesting the utility of using the biofilm as an additional bioindicator to monitor the water quality of the river. |
| Source | To (Auckl.) 10 (12) |
| Keywords | biofilmwater qualityoxidative stressextruded polymeric substanceinductively coupled plasma mass spectrometrymetalsmercuryarsenic |
| Journal | To (Auckl.) |
| Editor | Tangible Media, published for Tourism Industry Association New Zealand (TIA),, Auckland, N.Z., Nuova Zelanda |
| Year | 2022 |
| Type | Articolo in rivista |
| DOI | 10.3390/toxics10120791 |
| Authors | Guerrieri, Nicoletta; Fantozzi, Laura; Lami, Andrea; Musazzi, Simona; Austoni, Martina; Orru, Arianna; Marziali, Laura; Borgonovo, Gigliola; Scaglioni, Leonardo |
| Text | 479421 2022 10.3390/toxics10120791 ISI Web of Science WOS 000902908400001 biofilm water quality oxidative stress extruded polymeric substance inductively coupled plasma mass spectrometry metals mercury arsenic Biofilm and Rivers The Natural Association to Reduce Metals in Waters Guerrieri, Nicoletta; Fantozzi, Laura; Lami, Andrea; Musazzi, Simona; Austoni, Martina; Orru, Arianna; Marziali, Laura; Borgonovo, Gigliola; Scaglioni, Leonardo Guerrieri This article focuses on a very peculiar habitat, the thin biofilm that covers the surface of rocks, cobbles, sediment grains, leaf litter, and vegetation on a riverbed. Species composition changes over time and depends on environmental conditions and perturbation of water quality. It provides several ecosystem services, contributing to the biogeochemical fluxes and reducing contamination by absorbing the pollutants. Biofilm into the Toce River Ossola Valley, Piedmont, Italy was investigated to assess its capacity to accumulate the metals and macroions from the water column. In this preliminary work, we investigated three sample points, in two different seasons. The community composition of biofilm was determined via morphological analysis diatoms and non diatoms algal community . We characterize the biofilm, a community of different organisms, from different perspectives. In the biofilm, Hg was analyzed with an automated mercury analyzer, other metals and macroions with inductively coupled plasma mass spectrometry ICP MS Al, As, Ba, Ca, Cr, Cu, Fe, K, Mg, Mn, Ni, P, Pb, and Zn , and the carotenoid and chlorophyll composition of the photosynthetic organism with HPLC analysis for the primary producers. The results evidence a seasonal pattern in metals and macroions levels in the biofilm, and a significant difference in the biofilm community and in carotenoid composition, suggesting the utility of using the biofilm as an additional bioindicator to monitor the water quality of the river. 10 Published version Articolo in rivista Tangible Media, published for Tourism Industry Association New Zealand TIA , 1179 7010 To Auckl. To Auckl. To Auckl. To Auckl. andrea.lami LAMI ANDREA nicoletta.guerrieri GUERRIERI NICOLETTA laura.fantozzi FANTOZZI LAURA laura.marziali MARZIALI LAURA simona.musazzi MUSAZZI SIMONA martina.austoni AUSTONI MARTINA |
