Hera Karayanni cv

Education

PhD in Oceanology, University Aix-Marseille II, France (2004) 

MSc in Sciences of the Marine Environment, University Aix-Marseille II, France (1999) 

BSc in Biology, University of Athens (1997)

Research interests

Aquatic Microbial Ecology, Aquatic Microbial Food Webs, Microbial diversity and interactions, Protist grazing, Microbial Biogeography

Academic experience

2016-today Assistant professor, Dept of Biological Applications and Technology, Univ of Ioannina-GR

2011-2016 Lecturer, Dept of Biological Applications and Technology, Univ of Ioannina-GR

2009-2010 Visiting Assistant Professor, Dept of Biological Applications and Technology, Univ of Ioannina-GR

2006-2007 Visiting Lecturer, Dept of Marine Sciences, Univ of the Aegean-GR

Pubications 

1. Nathanailides, C.; Kolygas, M.; Tsoumani, M.; Gouva, E.; Mavraganis, T.; Karayanni, H. (2023) Addressing Phosphorus Waste in Open Flow Freshwater Fish Farms: Challenges and Solutions. Fishes, 8, 442. https://doi.org/10.3390/fishes8090442 

2. Nikolopoulou I, Piperagkas O, Moschos S, Karayanni H. (2023) Bacteria Release from Microplastics into New Aquatic Environments. Diversity, 15, 115. https://doi.org/10.3390/d15010115 

3. Moschos S, Kormas K, Karayanni H. (2022) Prokaryotic diversity in marine and freshwater recirculating aquaculture systems. Reviews in Aquaculture https://doi.org/10.1111/raq.12677

4. Moschos S, Piperagkas O, Karayanni H. (2021) A vertically and temporally diverse bacterial community in a shallow lake-water sediment site of a eutrophic lake. Inland Waters DOI: 10.1080/20442041.2020.1809952

5. Macingo SC, Kormas K, Oikonomou A, Karayanni H. (2019) Taxa-area and distance-decay relationships of unicellular eukaryotes along an elevation gradient of mountainous freshwater ecosystems. Journal of Plankton Research, 4(6):821-834 https://doi.org/10.1093/plankt/fbz066

6. Moustaka-Gouni M, Sommer U, Economou-Amilli A, Arhonditsis GB, Katsiapi M, Papastergiadou E, Kormas KA, Vardaka E, Karayanni H, Papadimitriou T (2019) Implementation of the Water Framework Directive: Lessons Learned and Future Perspectives for an Ecologically Meaningful Classification Based on Phytoplankton of the Status of Greek Lakes, Mediterranean Region. Environmental Management, 1-14 (pdf)

7. Karayanni H, Kormas KA, Moustaka-Gouni M, Sommer U (2019) Changes in Heterotrophic Picoplankton Community Structure after Induction of a Phytoplankton Bloom under Different Light Regimes. Diversity 11(10)  https://doi.org/10.3390/d11100195 (pdf)

8. Tatsika S, Karamanoli K, Karayanni H, Genitsaris S (2019) Metagenomic Characterization of Bacterial Communities on Ready-to-Eat Vegetables and Effects of Household Washing on their Diversity and Composition. Pathogens, 8, 37

9. Karayanni H, Macingo SC, TolisV, Alivertis D (2019) Diversity of Bacteria in Lakes with Different Chlorophyll Content and Investigation of Their Respiratory Activity through a Long-Term Microcosm Experiment. Water, 11, 467. https://doi.org/10.3390/w11030467

10. Meziti A, Tsementzi D, Rodriguez-R LM, Hatt JK, Karayanni H, Kormas K, Konstantinidis K (2018) Quantifying the changes in genetic diversity within sequence-discrete bacterial populations across a spatial and temporal riverine gradient. The ISME journal. DOI: 10.1038/s41396-018-0307-6

11. Tsola SL, Renta C, Macingo SC, Karayanni H. (2018) Investigating size-fractionated chlorophyll a and phycocyanin temporal variations in a highly eutrophic lake and its isolated karstic springs. Oceanological and Hydrobiological Studies, 47(2): 118-127.  DOI: https://doi.org/10.1515/ohs-2018-0013

12. Kokkinos P, Karayanni H, Meziti A, Feidaki R, Paparrodopoulos S, Vantarakis A (2018) Assessment of the Virological Quality of Marine and Running Surface Waters in NW Greece: A Case Study. Food Environ Virol. https://doi.org/10.1007/s12560-018-9344-6

13. Karayanni, H.; Meziti, A.; Spatharis, S.; Genitsaris, S.; Courties, C.; Kormas, K.A. (2017) Changes in Microbial (Bacteria and Archaea) Plankton Community Structure after Artificial Dispersal in Grazer-Free Microcosms. Microorganisms, 5, 31.

14. Meziti, A.; Tsementzi, D.; Ar. Kormas, K.; Karayanni, H.; Konstantinidis, K.T. (2016) Anthropogenic effects on bacterial diversity and function along a river-to-estuary gradient in Northwest Greece revealed by metagenomics. Environmental Microbiology. DOI: 10.1111/1462-2920.13303 

15.  Kormas KA, Pachiadaki MG, Karayanni H, Leadbetter ER, Bernhard JM, Edgcomb, VP. (2015) Inter-comparison of the potentially active prokaryotic communities in the halocline sediments of Mediterranean deep-sea hypersaline basins. Extremophiles. DOI: 10.1007/s00792-015-0770-1 

16. Meziti, A.; Kormas, K.A.; Moustaka-Gouni, M.; Karayanni, H. (2015) Spatially uniform but temporally variable bacterioplankton in a semi-enclosed coastal area. Systematic and Applied Microbiology. DOI: 10.1016/j.syapm.2015.04.003 

17. Kormas, K.A.; Karayanni, H.; Christaki, U.; Giannakourou, A.; Assimakopoulou, G.; Gotsis-Skretas, O. Microbial food web structure and its impact on primary production in a meso-oligotrophic coastal area (pagasitikos gulf, Aegean sea).Turkish Journal of Fisheries and Aquatic Sciences. DOI: 10.4194/1303-2712-v14_2_24 

18. Nikouli, E.; Kormas, K.A.; Berillis, P.; Karayanni, H.; Moustaka-Gouni, M. (2013) Harmful and parasitic unicellular eukaryotes persist in a shallow lake under reconstruction (L. Karla, Greece). Hydrobiologia. DOI: 10.1007/s10750-013-1604-8 

19.  Oikonomou, A.; Katsiapi, M.; Karayanni, H.; Moustaka-Gouni, M.; Kormas, K.A. (2012) Plankton microorganisms coinciding with two consecutive mass fish kills in a newly reconstructed lake. The Scientific World Journal. DOI: 10.1100/2012/504135 

20. Karayanni H, Kormas KA, Cragg S, Nicolaidou A (2010) Establishment and succession of an epibiotic community on chromated copper arsenate (CCA) treated wood in Mediterranean waters. Arch. Environ. Contam. Toxicol. 58:71-78

21. Dalby AP, Kormas KA, Christaki U, Karayanni H (2008) Cosmopolitan heterotrophic microeukaryotes are active bacterial grazers in experimental oil-polluted system. Environ. Microbiol. 10:47-56

22. Karayanni H, Christaki U, Van Wambeke F, Thyssen M, Denis M (2008) Heterotrophic nanoflagellate and ciliate bacterivorous activity and growth in the northeast Atlantic Ocean: a seasonal mesoscale study. Aquat Microb Ecol 51:169-181, doi:10.3354/ame01181

23. Maixandeau A, Lefèvre D, Karayanni H, Christaki U, Van Wambeke F, Thyssen M, Denis M, Fernández CI, Uitz J, Leblanc K, Quéguiner B (2005) Microbial community production, respiration and structure of the microbial food web of an ecosystem in the Northeastern Atlantic Ocean. J Geophys Res: Oceans, 110(C7): art.no C07S17

24. Karayanni H, Christaki U, Van Wambeke F, Denis M, Moutin T (2005) Influence of ciliated protozoa and heterotrophic nanoflagellates on the fate of primary production in NE Atlantic Ocean. J Geophys Res: Oceans, 110, C07S15, doi:10.1029/2004JC002602

25. Karayanni H, Christaki U, Van Wambeke F, Dalby A (2004) Evaluation of double formalin – Lugol’s fixation in assessing number and biomass of ciliates. An example of estimations at mesoscale in NE Atlantic. J Microbiol Meth, 56 (3), 349-358

26. Christaki U, Courties C, Karayanni H, Giannakourou A, Maravelias C, Kormas KA, Lebaron P (2002) Dynamic characteristics of Prochlorococcus and Synechococcus consumption by bacterivorous nanoflagellates. Microb. Ecol. 43:341-352