- Biological Oceanography, Ph.D. - Kiel University (Germany)
- Water science and technology, M.Sc. - Universidad de San Carlos de Guatemala
- Applied Physics, B.Sc. - Universidad de San Carlos de Guatemala
- I developed biogechemical mechanistic models, e.g. OxyPOM.
- I model extreme events (e.g., aquatic heatwaves, low oxygen, and harmful algal blooms) in the Elbe Estuary in the project ElbeXtreme.
- My current profile.
- I developed a data-based modelling framework for aquatic food webs.
- Graduation thesis: Prey specialization in dinoflagellates and size-structured aquatic food webs
- Participation on the long-term monitoring program of Lake Atitlan.
- Sampling, laboratory analyses (nutrients, toxins, and heavy metals).
- Sampling and laboratory analyses (microbiology, nutrients, and heavy metals).
- One ongoing thesis supervision (M.Sc.)
- Teaching assistance for Ecological modelling - Kiel University.
- Teaching assistance for Physics lab. - Universidad de San Carlos de Guatemala
- García-Oliva, O., and Wirtz, K. (2025) Complex structure of aquatic food-webs emerges from few assembly rules. Nature Ecology and Evolution, 9: 576–588. doi:10.1038/s41559-025-02647-1.
- Achterberg, P., et al. (2025) Identifying and addressing the components of extreme physical-oceanographical events for improved risk management in coastal systems. Front. Mar. Sci.. doi:10.3389/fmars.2025.1681652.
- García-Oliva, O., and Wirtz, K. (2022) Size-dependent and -independent prey selection of dinoflagellates. Mar. Biol., 169, 122. doi:10.1007/s00227-022-04102-2.
- García-Oliva, O., Hantzsche, F.M., Boersma, M. and Wirtz, K.W. (2022) Phytoplankton and particle size spectra indicate intense mixotrophic dinoflagellates grazing from summer to winter. J. Plankton Res., 44, 224–240. doi:10.1093/plankt/fbac013.
- Dix, M.A., Gómez, S., García-Oliva, O.F., Dix, M.W., Romero-Oliva, C.S. and Garcia-Polo, J. (2022) Input of Nitrogen and Phosphorus to Lake Atitlán (Guatemala) via atmospheric deposition (in Spanish). Ciencia, Tecnologı́a y Salud, 9(1): 6-18. doi:10.36829/63CTS.v9i1.1043.
- Rodas-Pernillo, E., Vasquez-Moscoso, C. A., García, O.F. (2020). Dynamics of the consumption and nutrient supply of phytoplankton, dominated by Microcystis sp. (Cyanophyceae) of Lake Amatitlán (in Spanish). Ciencia, Tecnología Y Salud, 7(1). doi.:10.36829/63CTS.v7i1.709.
- García-Oliva, O., Lemmen, C., Li, X., and Wirtz, K. (2025) Disentangling peri-urban river hypoxia (pre-print). arXiv 2510.05775 doi:10.48550/arXiv.2510.05775.
- García-Oliva, O. (2024) Detritus identification in FlowCAM using a simple binary classifier (pre-print). bioRxiv 2024.11.18.624123. doi:10.1101/2024.11.18.624123.
- Barreno Ortiz, F.M., García-Oliva, O.F., Pérez Xoquic, A. (2017) Payment for wastewater treatment services as a measure of adaptation to climate change (Panajachel, Guatemala) (in Spanish). In: Cambio climático y desarrollo social con énfasis en el occidente de Guatemala (pp. 153-175). Mendez, J.J. (Ed.) FLACSO-Guatemala. ISBN: 978-9929-585-49-2.