Personal de la EFPU

Virginia E. Villafañe

Actividades actuales

Investigadora del Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Categoría: Independiente.

Estudios

2004 – Ph. D., University of Groningen, Holanda

1993 – M. Sc. in Marine Biology, Scripps Institution of Oceanography. University of California San Diego, La Jolla, CA, Estados Unidos.

1990 – Lic. en Ciencias Biológicas, Universidad Nacional de la Patagonia San Juan Bosco. Trelew, Chubut, Argentina.

Intereses académicos/investigación

Fotobiología Acuática

Productividad primaria, con especial énfasis en los efectos de la radiación solar (visible y ultravioleta) y de los mecanismos de aclimatación en el fitoplancton.

Algunas publicaciones recientes

1. Gao, K., Z. Ruan, V.E. Villafañe, J.-P. Gattuso & E. W. Helbling. 2009. Ocean acidification exacerbates the impact of UV radiation on the calcifying phytoplankter Emiliania huxleyi. Limnology and Oceanography, 54: 1855-1862. Science Citation Index ISI 3.663.

2. Buma, A.G.J., R.J.W. Visser, W.H. van de Poll, V.E. Villafañe, P.J. Janknegt & E.W. Helbling. 2009. Wavelength dependent xanthophyll cycle activity in marine microalgae exposed to natural ultraviolet radiation. European Journal of Phycology, 44: 515-524. Science Citation Index ISI 1.826.

3. Helbling, E.W., D.E. Pérez, C.D. Medina, M.G. Lagunas & V.E. Villafañe. 2010. Phytoplankton distribution and photosynthesis dynamics in the Chubut River estuary (Patagonia, Argentina) throughout tidal cycles. Limnology and Oceanography, 55: 55-65. Science Citation Index ISI 3.545.

4. van de Poll, W.H., A.G.J. Buma, R.J.W. Visser, P.J. Janknegt, V.E. Villafañe & E.W. Helbling. 2010. Xanthophyll cycle activity and photosynthesis of Dunaliella tertiolecta (Chlorophyceae) and Thalassiosira weissflogii (Bacillariophyceae) during fluctuating solar radiation. Phycologia, 49: 249-259. Science Citation Index ISI 1.218.

5. Gonçalves, R.J., S. Souza, J. Aigo, B. Modenutti, E. Balseiro, V.E. Villafañe, V. Cussac & E.W. Helbling. 2010. Responses of plankton and fish from temperate zones to UVR and temperature in a context of global change. Ecología Austral, 20: 129-153.

6. Halac, S.R., V.E. Villafañe & E.W. Helbling. 2010. Temperature benefits the photosynthetic performance of the diatoms Chaetoceros gracilis and Thalassiosira weissflogii when exposed to UVR. Journal of Photochemistry and Photobiology B: Biology, 101: 196-205. Science Citation Index ISI 1.871.

7. Helbling, E.W., V.E. Villafañe & D.-P. Häder. 2010. Ultraviolet radiation effects on macroalgae from Patagonia, Argentina. En: Israel, A., R. Einav & J. Seckbach (eds.). Role of seaweeds in future globally changing environments. Springer, pp.199-214.

8. Gonçalves, R.J., V.E. Villafañe, C.D. Medina, E.S. Barbieri & E.W. Helbling. 2011. Plankton dynamics and photosynthesis responses in a eutrophic lake of Patagonia (Argentina): Influence of grazing and UVR. Latin American Journal of Aquatic Research, 39: 117-130. Science Citation Index ISI 0.435.

9. Fiorda Giordanino, M.V., S.M. Strauch, V.E. Villafañe & E.W. Helbling. 2011. Influence of temperature and UVR on photosynthesis and morphology in four species of cyanobacteria. Journal of Photochemistry and Photobiology B: Biology, 103: 68-77. Science Citation Index ISI 2.116.

10. Helbling, E.W., A.G.J. Buma, P. Boelen, H.J. van der Strate, M.V. Fiorda Giordanino & V.E. Villafañe. 2011. Increase in Rubisco activity and gene expression, due to elevated temperature, partially counteracts UVR-induced photoinhibition in the marine diatom Thalassiossira weissflogii. Limnology and Oceanography, 56: 1330-1342. Science Citation Index ISI 3.545.

11. Xu, C., K. Gao, V.E. Villafañe & E. W. Helbling. 2011. Photosynthetic responses of Emiliania huxleyi to UV radiation and elevated temperature: Roles of calcified coccoliths. Bioegeosciences, 8: 1441-1452. Science Citation Index ISI 3.246.

12. Halac, S.R., V.E. Villafañe, R.J. Gonçalves & E.W. Helbling. 2011. Long term UVR effects upon phytoplankton natural communities of Patagonian coastal waters. En: Remote sensing of biomass: Principles and applications. Book 2. Atazadeh, I. (ed.). Intech Open Access Publishers, pp.229-248. [http://www.intechweb.org].

(Última actualización: Enero 2012)

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