Research Assistant (PhD)

Phone. lab.:
+386 1 4706 372 (Paleoinkubator)
Research interests

Karst aqueous geochemistry
Cave microclimate
Cave geomicrobiology
Speleothems as proxies for past climate changes
Stable Isotopes
Radiometric dating
Interglacial climate changes
Cosmogenic isotope Cl-36

Selected publications

Johnston, V.E., Borsato, A., Frisia, S., Spötl, C., Dublyansky, Y., Töchterle, P., Hellstrom, J.C., Bajo, P., Edwards, R.L., and Cheng, H. (2018). Evidence of thermophilisation and elevation-dependent warming during the Last Interglacial in the Italian Alps. Scientific Reports, 8:2680. DOI:10.1038/s41598-018-21027-3.

Borsato, A., Johnston, V.E., Frisia, S., Miorandi, R., Corradini, F. (2016) Temperature and altitudinal influence on karst dripwater chemistry: Implications for regional-scale palaeoclimate reconstruction from speleothems. Geochimica et Cosmochimica Acta, 177, 275–297. DOI:10.1016/j.gca.2015.11.043

Johnston, V.E., Borsato, A., Spötl, C., Frisia, S., and Miorandi, R. (2013). Stable isotopes in caves over altitudinal gradients: fractionation behaviour and inferences for speleothem sensitivity to climate change. Climate of the Past, 9, 99-118. DOI: 10.5194/cp-9-99-2013.

Johnston, V.E., McDermott, F., and Tamas, T. (2010). A radiocarbon dated bat guano deposit from N.W. Romania: Implications for the timing of the Little Ice Age and Medieval Climate Anomaly. Palaeogeography, Palaeoclimatology, Palaeoecology, 291 (3-4): 217-227. DOI: 10.1016/j.palaeo.2010.02.031.

Johnston, V.E. and McDermott, F. (2008). The distribution of meteoric Cl-36 in precipitation across Europe in spring 2007. Earth and Planetary Science Letters, 275 (1-2): 154-164.DOI: 10.1016/j.epsl.2008.08.021.

Selected projects

Kopenski karbonati: mineralni produkti geobioloških procesov v kritični coni (fundamental project • 1. July 201830. June 2021)

Curriculum Vitae


M.Sci. Environmental Geosciences, University of Bristol, United Kingdom (2005).
Ph.D. School of Geological Sciences, University College Dublin, Ireland (2010).

Employment and Fellowships

Post-doctoral fellowship: co-funded by Marie Curie Actions and the Autonomous Province of Trento. Museo delle Scienze, Trento, Italy (2010–2013).
Researcher: Karst Research Institute ZRC SAZU, Slovenia (2017–ongoing).
Researcher: Ivan Rakovec Institute of Palaeontology ZRC SAZU, Slovenia (2018–ongoing).


karst • cave • carbonate geochemistry • speleothems • isotope geochemistry