Assoc. Prof. Bojan Lazar, PhD


Department of Biodiversity, Faculty of Mathematics, Natural Sciences and Information Technologies, University of Primorska


Dr. Lazar is a marine conservation biologist with expertise in ecology and population biology of large marine vertebrates. His research mostly focuses on ecology, movements and habitat utilization of sea turtles and sharks in the Adriatic Sea, impact of fisheries on marine ecosystems, identification of critical habitats, and development of novel approaches in studying and conservation of marine populations. Dr. Lazar is a member of international scientific consortium of EU COST project “Advancing Marine Conservation in the European and Contiguous seas” and expert groups of IUCN and UNEP, and acts as expert consultant of several national institutions in the field of marine conservation.


  • Ph.D. - University of Zagreb, Faculty of Sciences, Department of Biology, 2009. Dissertation title:  Conservation ecology of loggerhead sea turtle Caretta caretta in the eastern Adriatic Sea.
  • M.Sc. – University of Zagreb, Faculty of Sciences, Department of Zoology, 2003. Thesis title: Bioaccumulation of metals in loggerhead sea turtle Caretta caretta from eastern Adriatic Sea.
  • B.Sc. - University of Zagreb, Faculty of Sciences, Department of Zoology, 1998.

Adjunct Appointments

  • University of Pula, Marine Science Program
  • University of Zagreb, Faculty of Science, Department of Biology

Classes taught

  • Marine Conservation Biology
  • Population Biology
  • Ecology and Conservation of Large Marine Vertebrates
  • Marine Ecology
  • Marine Vertebrates
  • Advanced Topics in Conservation Biology

Selected References

Gračan, R., Zavodnik, D., Krstinić, P., Dragičević, B., Lazar, B. 2017. Feeding ecology and trophic segregation of two mesopredatory sharks in heavily exploited coastal ecosystem of the Adriatic Sea. Journal of Fish Biology 90: 167-184.

Katsanevakis, S., Mackelworth, P., Coll, M., Fraschetti, S., Mačić, V., Giakoumi, S., Jones, P.J.S., Levin, N., Albano, P.G., Badalamenti, F., Brennan, R.E., Claudet, J., Culibrk, D., D'Anna, G., Deidun, A., Evagelopoulos, A., García-Charton, J.A., Goldsborough, D., Holcer, D., Jimenez, C., Kark, S., Sørensen, T.K., Lazar, B., Martin, G., Mazaris, A., Micheli, F., Milner-Gulland, E.J., Pipitone, C., Portman, M., Pranovi, F., Rilov, G., Smith, R.J., Stelzenmüller, V., Vogiatzakis, I., Winters, G. 2017. Advancing marine conservation in European and contiguous seas with the MarCons Action. Research Ideas and Outcomes 3. DOI: 10.3897/rio.3.e11884

Gračan, R, Čulinović, M., Mladineo, I., Lacković, G., Lazar, B. 2016. Trophic ecology shapes gastrointestinal helminth communities of two sympatric sharks, Mustelus punctulatus and Squalus acanthias, from the north-central Adriatic Sea. Journal of Zoology 299: 172-182. 

Gračan, R., Heppell, S.A., Lacković, G., Lazar, B. 2015. Age and growth dynamics of spiny dogfish, Squalus acanthias, in the Adriatic Sea. Marine and Freshwater Research 63: 357-367.

Vegter, A.C.,  Barletta, M., Beck, C., Borrero, J., Burton, H., Campbell, M.L., Eriksen, M., Eriksson, C., Estrades, A., Gilardi, K., Denise Hardesty, B., Assunção Ivar do Sul, J., Lavers, J.L., Lazar, B., Lebreton, L., Nichols, W.J., Ribic, C.A., Ryan, P.G., Schuyler, Q.A., Smith, S.D.A., Takada, H., Townsend, K.A., Wabnitz, C.C., Wilcox, C.,  Young, L., Hamann, M. 2014. Global research priorities for the management and mitigation of plastic pollution on marine wildlife. Endangered Species Research 25: 225-247.

Herceg Romanić, S., Holcer, D., Lazar, B., Klinčić, D., Mackelworth, P., Fortuna, C.M. 2014. Organochlorine contaminats in tissues of common bottlenose dolphins Tursiops truncatus from the northeastern part of the Adriatic Sea. Environmental Toxicology and Pharmacology 38: 469-479.

Mackelworth, P., Holcer, D., Lazar, B. 2013. Using conservation as a tool to resolve conflict: establishing the Piran - Savudrija International Marine Peace Park. Marine Policy 39: 112-119.

Gračan, R., Lazar, B., Posavec, I. Gregorović, G., Lacković, G. 2013. Maturation, fecundity and reproductive cycle of spiny dogfish, Squalus acanthias, in the Adriatic Sea. Marine Biology Research 9:  198-207.

Holcer, D., Lazar, B., Mackelworth, P.C., Fortuna, M.C. 2012. Rare or just unknown? The occurence of the giant davil ray (Mobula mobular) in the Adriatic Sea. Journal of Applied Ichthyology. DOI: 10.1111/jai.12034

Casale, P., Affronte, M., Scaravelli, D., Lazar, B., Vallini, C., Luschi, P. 2012. Foraging grounds, movement patterns and habitat connectivity of juvenile loggerhead turtles (Caretta caretta) tracked from the Adriatic Sea. Marine Biology 159: 1527-1535.

Lazar, B., Gračan, R. 2011. Ingestion of marine debris by loggerhead sea turtles, Caretta caretta, in the Adriatic Sea. Marine Pollution Bulletin 62: 43-47.

Lazar, B., Gračan, R., Katić, J., Zavodnik, D., Jaklin, A., Tvrtković, N. 2011. Loggerhead sea turtles (Caretta caretta) as bioturbators in neritic habitats: an insight through the analysis of benthic molluscs in the diet. Marine Ecology 32: 65-74.

Lazar, B., Maslov, L., Herceg Romanić, S., Gračan, R., Krauthacker, B., Holcer, D., Tvrtković, N. 2011. Organochlorine contaminants in loggerhead sea turtles, Caretta caretta, from eastern Adriatic Sea. Chemosphere 82: 121-129. 

Lazar, B., Lacković, G., Casale, P., Freggi, D., Tvrtković, N. 2008. Histological validation of gonad gross morphology to sex juvenile loggerhead sea turtles (Caretta caretta). Herpetological Journal 18: 137-140.

Lazar, B., Lipej, L., Holcer, D., Onofri, V., Žiža, V., Tutman, P., Marčelja, E., Tvrtković, N. 2008. New data on the occurrence of leatherback turtles, Dermochelys coriacea, in the eastern Adriatic Sea. Vie et Milieu 58: 237-241.

Holcer, D., Notarbartolo di Sciara, G., Fortuna, C.M., Onofri, V., Lazar, B. 2007. Occurrence of Cuvier’s beaked whale in the southern Adriatic Sea: evidence of an important Mediterranean habitat. Journal of the  Marine Biological Association of the United Kingdom  87: 359-362.

Casale, P., Lazar, B., Pont, S., Tomas, J., Zizzo, N., Badillo, J., Di Summa, A., Freggi, D., Lacković, G., Raga, J.A., Rositani, L., Tvrtković, N. 2006. Sex ratios of juvenile loggerhead sea turtles (Caretta caretta) in the Mediterranean Sea. Marine Ecology Progress Series 324: 281-285.

Lazar, B., Margaritoulis, D., Tvrtković, N. 2004. Tag recoveries of the loggerhead sea turtle, Caretta caretta, in the eastern Adriatic Sea: implications for conservation. Journal of the Marine Biological Association of the United Kingdom 84: 475-480.

Lazar, B., Casale, P., Tvrtković, N., Kožul, V., Tutman, P., Glavić, N. 2004. The presence of green sea turtle Chelonia mydas in the Adriatic Sea. Herpetological Journal 14: 143-147.