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Dr. Roberto Bertoni


Address: Largo Tonolli 50, 28922 Verbania (Italy)

Phone: +39 0323 518 320

Fax: +39 0323 556 513

e-mail: r.bertoni(at)ise.cnr.it

r. bertoni


Roberto Bertoni is Associate Senior Scientist at CNR-ISE (National Research Council - Institute for the Study of Ecosystems) Verbania Pallanza.

He obtained the Degree in Biological Sciences at the University of Milan in 1971. Its field of interest is the Aquatic Microbial Ecology and, in particular, the spatial -temporal trend of particulate and dissolved organic matter and of the microbial assemblages. His activity is also addressed to the development of innovative tools to solve specific sampling problems (two patents) to the application of image analysis techniques to quantify the microorganisms. The ultimate objective of his research is the study of the role of autotrophic and heterotrophic microorganisms in modifying the flow of energy and of organic matter in lakes. His research is developed through numerous international contacts which enabled him to study pristine environments (North Patagonian Andean lakes). He was responsible for the EU project MICOR for the evaluation of the UVB radiation effects on microbial communities. He collaborated in research activities in extreme environments in the Program EV-K2 and in the EU project MOLAR. He participated in the EU EMERGE project and collaborated in the EU project Euro-limpacs. He is engaged in students training and is support teacher in the PhD cycles of University of Parma, where he was external professor of Limnology (2004-2005).

He has produced and is maintaining the ISE website (www.ise.cnr.it ) and of its Department of Verbania (formerly Italian Institute of Hydrobiology) (www.ise.cnr.it/verbania ). He is Editor in chief of Journal of Limnology (www.jlimnol.it ). Since 1990 he has been a member of the Scientific Council of the Italian Institute of Hydrobiology until 2002, when the Institute has joined the ISE. Since then he has been responsible for the Department of Ecology of Inland Waters until his termination in June 2005. Since 1997 he is coordinator of the research on the limnological evolution of Lake Maggiore, promoted by the International Commission for the Protection of Italian-Swiss waters (CIPAIS), and editor of the annual scientific reports. From 2002 to 2008 he was Assistant Editor of the Journal of Environmental Engineering & Science of Research Board of Canada.

He is member of the Council Board of the Italian Society of Ecology (SitE) (since 2008) and of the Italian Association of Limnology and Oceanography (AIOL) (since 2009). Since 2000 he is webmaster of AIOL website (www.aiol.info ) He is national coordinator of the International Society of Limnology (SIL) (www.silitaly.it ). He is involved in the Italian network for the Long Term Ecological Research (LTER) since its beginning as Member of Coordination Committee till 2012. He was also  coordinator of the Southern Alps Lakes LTER site (2005-2012) and he is webmaster of the website of the LTER Network Italy (www.lteritalia.it ).

He is author of over 130 scientific publications, of which one third in journals with IF.


Recent publications


Callieri C., E. Caravati, G. Corno & R. Bertoni. 2012. Picocyanobacterial community structure and space-time dynamics in the subalpine Lake Maggiore (N.Italy). J.Limnol. 71: 95-103. 1.14 IF

Hernandez-Aviles S., R. Bertoni, M. Macek & C. Callieri. 2012. Why bacteria are smaller in the epilimnion than in the hypolimnion? A hypothesis comparing temperate and tropical lakes. J.Limnol. 71: 104-111. 1.14 IF

Callieri C., A. Lami & R. Bertoni. 2011. Microcolony formation by single-cell Synechococcus strains as a fast response to UV radiation. Appl. Environ. Microbiol. 77: 7533-7540. 3.778 IF

Bertoni R., W. Ambrosetti & C. Callieri. 2010. Physical constrains in the deep hypolimnion of a subalpine lake driving planktonic Bacteria and Archaea distribution. Advanc. Limnol. Oceanogr. 1:85-96.

Modenutti B., E. Balseiro, G. Corno, C. Callieri, R.Bertoni and E. Caravati. 2010. Ultraviolet radiation induce filamentation in bacterial assemblages from North Andean Patagonian lakes. Photochem & Photobiol 86: 871-881 2.253 IF

Bertoni R., C. Callieri, G. Corno, S. Rasconi, E. Caravati and M. Contesini. 2010. Long-term trends of epilimnetic and hypolimnetic bacteria and organic carbon in a deep holo-oligomictic lake. Hydrobiologia, 644: 279-287. (DOI: 10.1007/s10750-010-0150-x)

Caravati, C., C. Callieri, B. Modenutti, G. Corno, E. Balseiro, R. Bertoni & L Michaud. 2010. Picocyanobacterial assemblages in ultraoligotrophic Andean lakes reveal high regional microdiversity. J.Plankton Res., 32(3) 357-366, DOI:10.1093/plankt/fbp126

Callieri,C., G. Corno, E. Caravati, S. Rasconi, M. Contesini, and R. Bertoni. 2009. Bacteria, Archaea, and Crenarchaeota in the epilimnion and hypolimnion of a deep holo-oligomictic lake. Appl. Environ: Microbiol., 75: 7298-7300.

Corno, G., B. Modenutti, C. Callieri, E. Balseiro, R. Bertoni & E. Caravati. 2009. Bacterial diversity and morphology in deep ultraoligotrophic Andean lakes: role of UVR on vertical distribution. Limnol. Oceanogr., 54 (4): 1098-1112. Impact Factor 3.249

Bastidas Navarro, M., B. Modenutti, C. Callieri, R. Bertoni & E. Balseiro. 2009. Balance between primary and bacterial production in North Patagonian shallow lakes. Aquatic Ecology  43, 867-878.    Impact Factor 0.779

Bertoni, R., C. Callieri, E. Balseiro And B. Modenutti. 2008. Susceptibility of bacterioplankton to nutrient enrichment of oligotrophic and ultraoligotrophic lake waters. J. Limnol., 67(2): 120-127. 2.375 IF

Corno, C., Caravati, E., Callieri, C. and R. Bertoni. 2008. Effects of predation pressure on bacterial abundance, diversity, and size-structure distribution in an oligotrophic system. J. Limnol., 67(2): 107-119. 2.375 IF

Callieri C., G. Corno, E. Caravati, S. Galafassi, M. Bottinelli & R. Bertoni. 2007. Photosynthetic characteristics and diversity of freshwater Synechococcus  at two depths during different mixing conditions in a deep oligotrophic lake. J. Limnol., 66 (2): 81-89. 2.375 IF

Modenutti, B., Balseiro, E., Callieri, C. and R. Bertoni. 2008. Light vs food supply as factors modulating niche partitioning in two pelagic mixotrophic ciliates. Limnol. Oceanogr., 53 (2): 446-455. 3.249 IF

Callieri, C., Modenutti, B., Queimalinos, C., Bertoni, R., And Balseiro, E. 2007. Production and biomass of picophytoplankton and larger autotrophs in Andean ultraoligotrophic lakes: differences in light harvesting efficiency in deep layers. Aquatic Ecology 41:511-523. 0.779 IF

Callieri, C., Modenutti B., Queimaliños C., Bertoni R., and E. Balseiro 2007. Production and biomass of picophytoplankton and larger autotrophs in Andean ultraoligotrophic lakes: differences in light harvesting efficiency in deep layers. Aquatic Ecology. (on line version) 

Callieri, C., G. Corno, R. Bertoni 2006. Bacterial grazing by mixotrophic flagellates and Daphnia longispina: a comparison in a fishless alpine lake. Aquat Microb Ecol., 42: 127–137. 2,531 IF

Bertoni, R. and E. Balseiro. 2005. Mixing layer running incubator (MIRI): an instrument for incubating samples while moving vertically in the mixing layer. Limnol and Oceanogr. Methods, 3:158-163. 3,287 IF

Modenutti, B.E., Balseiro E.G., Callieri C., Bertoni R. and C.P. Queimaliños. 2005. Effect of UV-B and different PAR intensities on the primary production of the mixotrophic planktonic ciliate Stentor araucanus. Limnol and Oceanogr., 50(3): 864-871. 3,249 IF

Bertoni, R., R. Piscia and C. Callieri. 2004. Horizontal heterogeneity of seston, organic carbon and picoplankton in the photic zone of Lago Maggiore, Northern Italy. J. Limnol., 63(2): 244-249. 2.375 IF

Callieri, C., Balseiro E., Bertoni, R., & B. Modenutti. 2004. Picocyanobacterial photosynthetic efficiency under Daphnia grazing pressure. J. Plankton Res. 26(11): 1-7. 1,568 IF

Vrba, J., C. Callieri, T. Bittl, K. Šimek, R. Bertoni, P. Filandr, P. Hartman, J. Heizlar, M. Macek and J. Nedoma. 2004. Are bacteria the major producers of extracellular glycolytic enzymes in aquatic environments? Internat. Rev. Hydrobiol., 89: 1471-1477. 0,828 IF

Modenutti, B., E. Balseiro, C. Callieri, C. Queimaliños and R. Bertoni. 2004. Increase in photosynthetic efficiency as a strategy of planktonic organisms exploiting deep lake layers. Freshwater Biol., 49: 160-169. 2,797 IF

Bertoni, R., C. Callieri and G. Corno. 2002. The mixotrophic flagellates as key organisms from DOC to Daphnia in a oligotrophic alpine lake.  Verh. int. Ver. Limnol., 28: 392-395

Callieri, C., R. Bertoni & G:Corno. 2002. Dynamics of bacteria and mixotrophic flagellates in an alpine lake in relation to Daphnia population development. J. Limnol., 61(2): 177-182. 2.375 IF

Bertoni, R. 2000. Size distribution of particulate organic carbon in Lago Maggiore. Verh. Internat. Verein. Limnol., 27: 586-592.