A5014448059- Geology and Paleoclimatology Research
- Geological formations and processes
- Aquatic Ecosystems and Phytoplankton Dynamics
- Hydrology and Watershed Management Studies
- Archaeology and ancient environmental studies
- Soil erosion and sediment transport
- Geological and Geophysical Studies Worldwide
- Geomagnetism and Paleomagnetism Studies
- Pleistocene-Era Hominins and Archaeology
- Climate variability and models
- Groundwater and Isotope Geochemistry
- Finance, Taxation, and Governance
- Polar Research and Ecology
- Geological and Tectonic Studies in Latin America
- Flood Risk Assessment and Management
- Aquatic Ecosystems and Biodiversity
- Mining and Resource Management
- Fire effects on ecosystems
- Environmental and Cultural Studies in Latin America and Beyond
- Environmental Education and Sustainability
- Climate Change and Health Impacts
- Labor Law and Work Dynamics
- Genetic diversity and population structure
- Aging, Health, and Disability
- Administrative Law and Governance
National University of Jujuy
2014-2023
Consejo Nacional de Investigaciones Científicas y Técnicas
2012-2023
Instituto de Neurología Cognitiva
2017-2021
Universidad Nacional de Córdoba
2009-2012
Research Center on Earth Sciences
2009-2012
Universidad de Granada
2005
Abstract Aim In order to assess the impact of precipitation changes during P leistocene glaciations on plant species atagonian steppe, a phylogeographical study endemic shrub A narthrophyllum desideratum was performed. Location S outhern atagonia: rgentina and C hile. Methods Chloroplast intergenic spacers trn – G rpo B were sequenced for 264 individuals from 33 localities spanning entire distribution . Phylogenetic (statistical parsimony, maximum likelihood ayesian inference) population...
Background Rodent-borne hantaviruses (genus Orthohantavirus ) are the etiologic agents causing two human diseases: hemorrhagic fever with renal syndrome (HFRS) in Euroasia; and hantavirus pulmonary (HPS) North South America. In America fatality rates of HPS can reach up to 35%–50%. The transmission pathogenic humans occurs mainly via inhalation aerosolized excreta from infected rodents. Thus, epidemiology is necessarily linked ecology their rodent hosts contact a human, which turn may be...
Regime shifts are ecosystem-scale phenomena. In lake studies, most supporting evidence is frequently based on a single state variable. We examined the sediment record of shallow Blanca Chica (Argentina) to explore response multiple proxies belonging different trophic levels (nutrients, chlorophyll and carotenoid pigments, diatoms, Cladocera remains, Rotifera resting eggs) over last 250 yr. explored ecological indicators assess changes consistent with regime shifts. To do so, first we...
Abstract During the summer Lake Anónima experiences important changes in salinity and lake level fluctuations. Physicochemical data field observations indicate that evaporative processes are dominant water inflow is mainly provided by snow meltwater streams. A multiproxy analysis of from bottom sediments suggests main surface stream located south-west controls clastic input spatial variation sediment composition. Through an integrated (magnetic, X-ray diffraction Fourier transform infrared...
Shallow lakes are vulnerable ecosystems impacted by human activities and climate change. The Cladocera occupy a central role in food webs an excellent paleoecological indicator of web structure trophic status. We conducted paleolimnological study Lake Blanca Chica (Argentina) to detect changes on the planktivory herbivory regimes over last 250 years. Generalized additive models were fitted time series fish predation indicators (ephippial abundance size, mucrone scales, index) pheophorbide...
Abstract. The high-altitude lakes of the Altiplano-Puna Plateau in Central Andes often have large radiocarbon reservoir effects. This combined with general scarcity terrestrial organic matter makes obtaining a reliable and accurate chronological model based on ages challenge. As result, age-depth models dating are constructed by correcting for modern effect, however, commonly without consideration spatial variations within lake across basin. In order to get better constrain variability...
Abstract. The high-altitude lakes of the Altiplano–Puna Plateau in Central Andes commonly have large radiocarbon reservoir effects. This, combined with general scarcity terrestrial organic matter, makes obtaining a reliable and accurate chronological model based on ages challenge. As result, age–depth models dating are often constructed by correcting for modern effect, but without consideration spatial possible temporal variations within lake across basin. In order to get better constraint...