Education

• PhD in Agronomy, University of Buenos Aires, Argentina, 2006-2012 Dissertation title: “Controls on carbon cycles in natural and afforested ecosystems along a precipitation gradient in Patagonia, Argentina”. Supervisor: Dr. Amy T. Austin. Academic advisor: Dr. Laura Yahdjian and Dr. Martin Oesterheld
• B.Sc. Biology, University of Buenos Aires, Argentina, 2006. Honor thesis: “The role of soil organisms controlling aboveground litter decomposition in the semiarid Patagonian steppe, Argentina”. Supervisor: Dr. Amy T. Austin. Co-supervisor: Dr. Laura Yahdjian

Current positions

• Associate Research Scientist, National Council for Scientific and Technological Research (CONICET)
• Agricultural Experimental Station Pergamino, National Institute of Agricultural Technology (INTA).

Publications in refereed journals (last 5 years)

• Piñeiro-Guerra, J. M., Lewczuk, N. A., Della Chiesa, T., Araujo, P. I., Acreche, M., Alvarez, C., Alvarez, C. R., Chalco Vera,J., Cosentino, A., De Tellería. T., Petrasek, M., Piccinetti,C., Picone, L., Portela, S. I., Posse, G., Martin, S.,Videla, C., Yahdjian, L., & Piñeiro, G. 2025. Spatial variability of nitrous oxide emissions from cropland sand unmanaged natural ecosystems across a large environmental gradient. Journal of Environmental Quality, 1–16. https://doi.org/10.1002/jeq2.20663
• Hodges C., Araujo P.I., Hess L.J.T., Vivanco L., Kaye J., Austin A.T. 2023 Inclusion of metal cations
  improves a model of soil organic carbon across a precipitation by vegetation gradient in the Patagonian Andes. Geoderma, 440, 116718, (doi.org/10.1016/j.geoderma.2023.116718)
• Portela, S. I., Araujo, P. I., Restovich, S. B., Della Chiesa, T., Ponsa, J. M., & Ballesteros, A. P. 2023
  Reutilizar purines de tambo como oportunidad para reciclar nitrógeno y reducir su impacto ambiental.
  Ecología Austral, 411-426
• Della Chiesa T., Del Grosso S.J., Parton W.J., Araujo P.I., Piñeiro G. and Yahdjian L. 2022 Higher than
  expected N2O emissions from soybean crops in Argentina: estimates from DayCent simulations and field measurements. Science of the Total Environment 835 155408.
• Araujo P.I., Grasso A.A., González-Arzac A., Méndez M.S. and Austin A.T. 2022 Sunlight and soil biota
  accelerate decomposition of crop residues in Argentine Pampas. Agriculture, Ecosystems and
  Environment, 330, 107908.
• Berenstecher, P., Araujo, P. I., Austin, A. T. 2021 Worlds apart: location above‐or belowground
  determines plant litter decomposition in a semiarid Patagonian steppe. Journal of Ecology, 109(8),
  2885-2896.
• Vera-Candioti, J., Araujo, P. I., Huerga, I. R., Rojas, D. E., Cristos, D. S., Malmantile, A. D. 2021.
  Pesticides detected in surface and groundwater from agroecosystems in the Pampas region of Argentina: occurrence and ecological risk assessment. Environmental Monitoring and Assessment, 193(10), 120.
• Araujo, P.I., Piñeiro-Guerra, J.M., Yahdjian, L., Acreche, M.M., Alvarez, C., Alvarez, C.R., Costantini, A.,
  Chalco Vera, J., De Tellería, J., Della Chiesa, T., Lewczuk, N.A., Petrasek, M., Piccinetti, C., Picone, L.,
  Portela, S.I., Posse, G., Seijo, M., Videla, C., Piñeiro, G., 2020. Drivers of N2O Emissions from Natural
  Forests and Grasslands Differ in Space and Time. Ecosystems, 24(2), 335-350.
• Araujo P. I. and Austin, A. T. 2020. Exotic pine forestation shifts carbon accumulation to litter detritus
  and wood along a broad precipitation gradient in Patagonia, Argentina. Forest Ecology and
  Management, 460, 117902.