Dr. Marko Prokić, senior research associate at the Department of Physiology Institute for Biological Research Siniša Stanković University of Belgrade. I received PhD in 2016 at the Faculty of Biology, University of Belgrade, working on the effects of heavy metals on the oxidative status of green frogs. My fields of investigation are the ecophysiology and toxicology of ectothermic organisms with a special focus on amphibians. The research I conduct in natural populations and the laboratory is dedicated to determining the effects of environmental stressors on physiological parameters (redox balance, metabolism) and the ability of the organism to cope with changes in the environment. Currently, I am examining how artificial light at night affects crested newt species and their hybrids