Dr. Natalia Osma

Natalia holds a BSc degree in Biology from the University of the Basque Country (2008), and a MSc degree in Oceanography (2010) and a PhD degree in Biological Oceanography (2016) from the University of Las Palmas de Gran Canaria, Spain.

After completing her doctorate, she continued her research at the Leibniz Institute for Baltic Sea Research (2017), Germany, where she was awarded a postdoctoral project funded by the German Academic Exchange Service (Leibniz-DAAD).

In 2018, she joined our laboratory as a postdoctoral researcher. Throughout her research career, Natalia has studied the effect that multiple factors, such as the quality and quantity of food, temperature and ocean acidification, have on the physiology of marine zooplankton. Her scientific interest ranges from the mechanisms that regulate the metabolic response at the intracellular level to the impact that physiological alterations on these organisms has at the ecosystem level. She has participated in both land surveys and oceanographic campaigns along the Atlantic Ocean, the Pacific and the Baltic Sea.

In addition, she has a wide experience in culturing a large number of planktonic organisms. Natalia is currently developing a Fondecyt Postdoctoral research project (2019-2022), which aims to evaluate the role that natural environmental variability plays in the response of certain physiological traits of marine copepods to changes in the levels of pH and oxygen. During this project, she will characterize the scales of variability of these abiotic variables in two contrasting coastal ecosystems of the Chilean coast, and will conduct pH and oxygen manipulation experiments in the mesocosm facilities recently implemented by our laboratory.

When she is not in the lab, you could find her either hiking in the mountains or scuba-diving.

Publications:

Osma N, Latorre L, Jacob B, Contreras PY, von Dassow P, Vargas CA. 2020. Response of phytoplankton assemblages from naturally acidic coastal ecosystems to elevated pCO2. Frontiers in Marine Science 7, 323. https://doi.org/10.3389/fmars.2020.00323

Taucher J, Bach LT, Boxhammer T, Nauendorf A,
The Gran Canaria KOSMOS Consortium, Achterberg EP, Algueró-Muñiz M, Arístegui J, Czerny J, Esposito M, Guan W, Haunost M, Horn HG, Ludwig A, Meyer J, Spisla C, Sswat M, Stange P, Riebesell U. 2017. Influence of ocean acidification and deep water upwelling on oligotrophic plankton communities in the subtropical North Atlantic: Insights from an in situ mesocosm study. Frontiers in Marine Science 4, 85. Member of The Gran Canaria KOSMOS Consortium. https://doi.org/10.3389/fmars.2017.00085

Fernández-Urruzola I, Osma N, Gómez M, Pollehne F, Postel L, Packard TT. 2016. Modeling downward particulate organic nitrogen flux from zooplankton ammonium regeneration in the northern Benguela. Progress in Oceanography, 149, 121-133. http://dx.doi.org/10.1016/j.pocean.2016.10.010

Fernández-Urruzola I, Osma N, Packard TT, Maldonado F, Gómez M. 2016. Spatio-temporal variability in the GDH activity to ammonium excretion ratio in epipelagic marine zooplankton. Deep-Sea Research I, 117, pp. 61-69. http://dx.doi.org/10.1016/j.dsr.2016.09.005

Osma N, Fernández-Urruzola I, Gómez M, Montesdeoca-Esponda S, Packard TT. 2016. Predicting in vivo oxygen consumption rate from ETS activity and bisubstrate kinetics in cultured marine zooplankton. Marine Biology, 163:146. http://dx.doi.org/10.1007/s00227-016-2923-x

Fernández-Urruzola I, Osma N, Gómez M, Montesdeoca-Esponda S, Packard TT. 2016. Building a general kinetic model of glutamate dehydrogenase in two species of marine zooplankton. Marine Ecology Progress Series, 550, 83-99. http://dx.doi.org/10.3354/meps11700

Osma N, Maldonado F, Fernández-Urruzola I, Packard TT, Gómez M. 2016. Variability of respiration and pyridine nucleotide concentration in oceanic zooplankton. Journal of Plankton Research, 38 (3), 537-550. http://dx.doi.org/10.1093/plankt/fbw001

Osma N, Aristizabal M,Fernández-Urruzola I, Packard TT, Gómez M. 2016. Influence of starvation on respiratory metabolism and pyridine nucleotide levels in the marine dinoflagellate Oxyrrhis marina. Protist, 167, 136-147. http://dx.doi.org/10.1016/j.protis.2016.01.002

Packard TT, Osma N, Fernández-Urruzola I, Codispoti L, Christensen J, Gómez M. 2015. Peruvian upwelling plankton respiration: calculations of carbon flux, nutrient retention efficiency, and heterotrophic energy production. Biogeoscience 12, 2641-2654. http://dx.doi.org/10.5194/bg-12-2641-2015

Osma N,Fernández-Urruzola I, Packard TT, Postel L, Gómez M, Pollehne F. 2014. Short-term patterns of vertical particle flux in the northern Benguela upwelling: a comparison between sinking POC and respiratory carbon consumption. Journal of Marine Systems, 140 (B), pp. 150-162. http://dx.doi.org/10.1016/j.jmarsys.2014.01.004

Fernández-Urruzola, I, Osma N, Packard TT, Gómez M, Postel L. 2014. Distribution of zooplankton biomass and potential metabolic activities across the northern Benguela upwelling system. Journal of Marine Systems, 140 (B), pp. 138-149. http://dx.doi.org/10.1016/j.jmarsys.2014.05.009

Fernández-UrruzolaI, Gómez M, Maldonado F, Osma N, Packard TT. 2012. Procesado de muestras de zooplancton para el análisis fisiológico y bioquímico de la respiración y excreción de amonio. E. Moreno-Ostos (ed.), Libro Blanco de métodos y técnicas de trabajo oceanográfico. Consejo Superior de Investigaciones científicas, Madrid, pp. 667-688. http://editorial.csic.es/publicaciones/libros/ISBN:978-84-00-09419-5