Education
Academic Background-
Ph.D. Universidad Nacional de Cuyo Nuclear Engineering | Completed: 2015
Publications (71)
Selected Scholarly Contributions
Mercury in a geothermal and volcanic area in patagonia, southern south america.
Sergio Ribeiro Guevara
2020
Spatiotemporal structuring factors in the Chironomidae larvae (Insecta: Diptera) assemblages of an ultraoligotrophic lake from northern Patagonia Andean range: implications for paleolimnological interpretations.
Sergio Ribeiro Guevara
2020
The microbial mercury link in oligotrophic lakes: bioaccumulation by picocyanobacteria in natural gradients of dissolved organic matter.
Sergio Ribeiro Guevara
2019
Bromine as indicator of source of lacustrine sedimentary organic matter in paleolimnological studies.
Sergio Ribeiro Guevara
2019
Stranded false killer whales, pseudorca crassidens, in Southern South America reveal potentially dangerous silver concentrations.
Sergio Ribeiro Guevara
2019
2018
Silver bioaccumulation in chironomid larvae as a potential source for upper trophic levels: a study case from northern patagonia.
Sergio Ribeiro Guevara
2018
Interspecific differences in the bioaccumulation of arsenic of three Patagonian top predator fish: organ distribution and arsenic speciation.
Sergio Ribeiro Guevara
2018
High status of mercury and selenium in false killer whales (Pseudorca crassidens, Owen 1846) stranded on Southern South America: A possible toxicological concern?.
Sergio Ribeiro Guevara
2018
2018
Mercury in a stream-lake network of Andean Patagonia (Southern Volcanic Zone): partitioning and interaction with dissolved organic matter.
Sergio Ribeiro Guevara
2018
Mercury transformations in a coastal water column (Gulf of Trieste, Northern Adriatic Sea).
Sergio Ribeiro Guevara
2018
Bioindication of mercury, arsenic and uranium in the apple snail Pomacea canaliculata (Caenogastropoda, ampullariidae): Bioconcentration and symbiotic corpuscles.
Sergio Ribeiro Guevara
2018
Species-and habitat-specific bioaccumulation of total mercury and methylmercury in the food web of a deep oligotrophic lake.
Sergio Ribeiro Guevara
2018
The crater lake of copahue volcano (argentina): geochemical and thermal changes between 1995 and 2015.
Sergio Ribeiro Guevara
2017
Elemental concentrations in skin and internal tissues of commerson’s dolphins (cephalorhynchus commersonii) from subantarctic waters.
Sergio Ribeiro Guevara
2017
Reconstruction of the hydrologic history of a shallow patagonian steppe lake during the past 700 yr, using chemical, geologic, and biological proxies.
Sergio Ribeiro Guevara
2017
Characterization of mercury contamination surrounding a chloralkali production facility in tuzla, bosnia and herzegovina.
Sergio Ribeiro Guevara
2017
Variations in anthropogenic silver in a large Patagonian lake correlate with global shifts in photographic processing technology.
Sergio Ribeiro Guevara
2017
Seasonal variation of mercury methylation potential in pristine coastal marine sediment from the gulf of trieste (Northern adriatic sea).
Sergio Ribeiro Guevara
2017
Mercury and selenium in the food web of Lake Nahuel Huapi, Patagonia.
Sergio Ribeiro Guevara
2017
Mineral and essential element measurements in dolphin bones using two analytical approaches.
Sergio Ribeiro Guevara
2016
Chironomids as indicators of natural and human impacts in a 700-yr record from the northern patagonian andes.
Sergio Ribeiro Guevara
2016
Heavy metal and trace elements in riparian vegetation and macrophytes associated with lacustrine systems in Northern Patagonia Andean Range.
Sergio Ribeiro Guevara
2016
Hepatic and renal metallothionein concentrations in commerson’s dolphins (Cephalorhynchus commersonii) from tierra del fuego, South Atlantic Ocean.
Sergio Ribeiro Guevara
2016
Historical records of mercury in Southern latitudes over 1600 years: Lake Futalaufquen, Northern Patagonia.
Sergio Ribeiro Guevara
2016
New records of late holocene tephras from lake futalaufquen (42.8° S), northern Patagonia.
Sergio Ribeiro Guevara
2016
Natural origin arsenic in aquatic organisms from a deep oligotrophic lake under the influence of volcanic eruptions.
Sergio Ribeiro Guevara
2016
Assessing rare earth elements in quartz rich geological samples.
Sergio Ribeiro Guevara
2016
A novel route to produce a homogeneous certified reference material for k0-neutron activation analysis: Application to the certification of gold mass fraction in an Al–0.1% Au alloy.
Sergio Ribeiro Guevara
2016
The skin of commerson’s dolphins (cephalorhynchus commersonii) as a biomonitor of mercury and selenium in subantarctic waters.
Sergio Ribeiro Guevara
2015
Stable isotope analysis of trophic structure, energy flow and spatial variability in a large ultraoligotrophic lake in Northwest Patagonia.
Sergio Ribeiro Guevara
2015
Deposition of the 2011-2012 cordón caulle tephra (chile, 40°s) in lake sediments: implications for tephrochronology and volcanology.
Sergio Ribeiro Guevara
2014
Incorporation of inorganic mercury (Hg2+) in pelagic food webs of ultraoligotrophic and oligotrophic lakes: The role of different plankton size fractions and species assemblages.
Sergio Ribeiro Guevara
2014
Source and trophic transfer of mercury in plankton from an ultraoligotrophic lacustrine system (Lake Nahuel Huapi, North Patagonia).
Sergio Ribeiro Guevara
2014
A compilation of field surveys on gaseous elemental mercury (GEM) from contrasting environmental settings in Europe, South America, South Africa and China: Separating fads from facts.
Sergio Ribeiro Guevara
2014
Characterization of tephras dispersed by the recent eruptions of volcanoes Calbuco (1961), Chaiten (2008) and Cordon Caulle Complex (1960 and 2011), in Northern Patagonia.
Sergio Ribeiro Guevara
2014
Selenium species and their distribution in freshwater fish from argentina.
Sergio Ribeiro Guevara
2013
Differential mercury transfer in the aquatic food web of a double basined lake associated with selenium and habitat.
Sergio Ribeiro Guevara
2013
Influence of dissolved organic matter character on mercury incorporation by planktonic organisms: An experimental study using oligotrophic water from Patagonian lakes.
Sergio Ribeiro Guevara
2013
Stability and behaviour of low level spiked inorganic mercury in natural water samples.
Sergio Ribeiro Guevara
2013
Heavy metals and essential elements in commerson's dolphins (Cephalorhynchus c. commersonii) from the southwestern South Atlantic Ocean.
Sergio Ribeiro Guevara
2013
Mercury and selenium in subantarctic commerson's dolphins (Cephalorhynchus c. commersonii).
Sergio Ribeiro Guevara
2013
Food web structure in a double-basin ultra-oligotrophic lake in Northwest Patagonia, Argentina, using carbon and nitrogen stable isotopes.
Sergio Ribeiro Guevara
2013
Arsenic, cobalt and chromium food web biodilution in a Patagonia mountain lake.
Sergio Ribeiro Guevara
2012
Influence of precipitation, landscape and hydrogeomorphic lake features on pelagic allochthonous indicators in two connected ultraoligotrophic lakes of North Patagonia.
Sergio Ribeiro Guevara
2012
Apple snails and their endosymbionts bioconcentrate heavy metals and uranium from contaminated drinking water.
Sergio Ribeiro Guevara
2012
Bioindication of volatile elements emission by the Puyehue-Cordon Caulle (North Patagonia) volcanic event in 2011.
Sergio Ribeiro Guevara
2012
Mercury methylation and reduction potentials in marine water: An improved methodology using 197Hg radiotracer.
Sergio Ribeiro Guevara
2012
Mercury in the biotic compartments of Northwest Patagonia lakes, Argentina.
Sergio Ribeiro Guevara
2011
Trophodynamics and distribution of silver in a Patagonia Mountain lake.
Sergio Ribeiro Guevara
2011
Mercury in an ultraoligotrophic North Patagonian Andean lake (Argentina): Concentration patterns in different components of the water column.
Sergio Ribeiro Guevara
2010
Tephrochronology of recent events in the Andean Range (Northern Patagonia): Spatial distribution and provenance of lacustrine ash layers in the Nahuel Huapi National Park.
Sergio Ribeiro Guevara
2010
Trace elements in plankton, benthic organisms and forage fish of Lake Moreno, Northern Patagonia, Argentina.
Sergio Ribeiro Guevara
2010
Puna (argentina) and northern chile ordovician basic magmatism: a contribution to the tectonic setting.
Sergio Ribeiro Guevara
2009
Comment on: “impact of the 1960 major subduction earthquake in northern patagonia (chile, argentina)” quartenary int. 158 (2006) 58–71.
Sergio Ribeiro Guevara
2009
Benthic methylmercury production in lacustrine ecosystems of Nahuel Huapi National Park, Patagonia, Argentina.
Sergio Ribeiro Guevara
2009
Palaeolimnology of Lake Hess (Patagonia, Argentina): Multi-proxy analyses of short sediment cores.
Sergio Ribeiro Guevara
2009
Source identification of volcanic ashes by geochemical analysis of well preserved lacustrine tephras in Nahuel Huapi National Park.
Sergio Ribeiro Guevara
2008
Methylmercury production in the water column of an ultraoligotrophic lake of Northern Patagonia, Argentina.
Sergio Ribeiro Guevara
2008
Validation of methodology for determination of the mercury methylation potential in sediments using radiotracers.
Sergio Ribeiro Guevara
2008
Selenium and mercury in native and introduced fish species of patagonian lakes, Argentina.
Sergio Ribeiro Guevara
2008
Comment on the article ‘radionuclide dating (pb-210, cs-137, am-241) of recent lake sediments in a highly active geodynamic setting (lakes puyehue and icalma—chilean lake district)’.
Sergio Ribeiro Guevara
2007
Influence of Ni doping on vanadium oxide/hexadecylamine multiwall nanotubes.
Sergio Ribeiro Guevara
2007
Methodological considerations regarding the use of inorganic 197Hg (II) radiotracer to assess mercury methylation potential rates in lake sediment.
Sergio Ribeiro Guevara
2007
Averaged cross sections for the reactions 68Zn (n, p) 68g Cu and 68Zn (n, p) 68mCu for a 235U fission neutron spectrum.
Sergio Ribeiro Guevara
2007
Novel methodology for the study of mercury methylation and reduction in sediments and water using 197Hg radiotracer.
Sergio Ribeiro Guevara
2007
Consequences of the elimination of old leaves upon spring phenological events and the new leaves nutrient concentration in a wintergreen woody species in the Southern hemisphere.
Sergio Ribeiro Guevara
2005
Provenance analysis and tectonic setting of late Neoproterozoic metasedimentary successions in NW Argentina.
Sergio Ribeiro Guevara
2005
Short‐term environmental changes in Lake Morenito (41° S, 71° W, Patagonia, Argentina) from the analysis of sub‐fossil chironomids.
Sergio Ribeiro Guevara
2005
Silver contamination on abiotic and biotic compartments of Nahuel Huapi National Park lakes, Patagonia, Argentina.
Sergio Ribeiro Guevara
2005