Petihakis George

by / Friday, 14 November 2014 / Published in people

Position: Associate Researcher

Contact Info

Institute: Oceanography
Address: HCMR, Crete P.O. Box 2214 71003 Iraklion Crete, Greece
Tel: +302810337755
Telex: +302810337822


Dr. George Petihakis is a Researcher in the Institute of Oceanography of the Hellenic Centre of Marine Research. He has been with the HCMR since it’s beginning in 2003 and previously before it’s merger at the Institute of Marine Biology of Crete.

He has 16 years of experience in marine science with particular emphasis on marine ecological modelling, operational monitoring, and data analysis. He has contributed to the development of the POSEIDON-M3A marine observing station in East Mediterranean and he is responsible for its operation and maintenance. As ecosystem modeller he has extensively used collected and processed data for the tuning and validation of ecosystem models for Cretan and Aegean Seas, East Mediterranean and Mediterranean Basins. Furthermore he has developed a decision making management tool for aquacultures which provides valuable information on key parameters such as the location and size of the farm through a holistic environmental impact approach.

Dr Petihakis has been involved as coordinator, principal investigator or researcher, in 32 EU and national programs some of which are RECITE, EUROFORM, MATER-MAST II, THETIS, MFSPP, COST-IMPACT, MFSTEP, MEDEX, MedEcos, INSEA, INTERREG III-A, POSEIDON I&II, EuroSITES, MEECE, JERICO.

During the period 2003 – 2008 he was Associate lecturer at the Technological Educational Institute of Crete (TEI), School of food technology and dietetics, Department of human nutrition and dietetics.

He has been evaluator of research projects in National (GRST) and European (FP7) programs, referee in 9 scientific journals in the area of physical chemical and biological oceanography and head of the scientific diving operations in HCMR.

Education Profile

• PhD, Hydrodynamic and Ecological Simulation of the Ecosystem of Pagasitikos, University of Thessaly, Greece, 2004
• MSc, Applied Fish Biology, Polytechnic South West (Plymouth), UK, 1989
• B.Sc. (hons) Ecology, Royal Holloway and Bedford new College, University of London, UK, 1988

Professional Profile

• 2003 to Present, Researcher, Institute of Oceanography, Hellenic Centre for Marine Research, Heraklion, Crete Greece.
• 1995 to 2002, Researcher, Institute of Marine Biology of Crete, Iraklion, Crete Greece.
• 1991 to 1995, Scientific Associate, Sitia Development Organisation, Sitia Crete Greece

Scientific and Professional Membership

• Geotechnical Chamber of Greece
• Association of Aquaculture Specialists
• Association of Greek Oceanographers
• European Society of Limnology and Oceanography
• Association of Greek Researchers
• International Society for Ecological Modelling (ISEM)

Research Interests

• Marine ecosystem Modelling
• Marine ecosystem monitoring with emphasis on operational oceanography
• Calibration procedures for marine sensors
• Scientific diving

Petihakis G., Triantafyllou G. N., Korres G. and A. Theodorou 2011: Ecosystem modelling: Towards the development of a management tool for a marine coastal system. Part-I, General circulation, hydrological and dynamical structure. Journal of Marine Systems, INSEA Special Issue, (in press).


Petihakis G., Triantafyllou G., Korres G., and A. Theodorou, 2011: Ecosystem modelling: Towards the development of a management tool for a marine coastal system Part-II, Ecosystem processes and biogeochemical fluxes. Journal of Marine Systems, INSEA Special Issue, (in press).


• Raitsos D.E., Korres G., Triantafyllou G., Petihakis G., Pantazi M., Tsiaras K. and A. Pollani, 2011: Ecosystem modelling: Assessing chlorophyll variability in relation to the environmental regime in Pagasitikos Gulf, Greece. Journal of Marine Systems, INSEA Special Issue, (in press).


• Korres G., Triantafyllou G., Petihakis G., Raitsos D.E., Hoteit I., Pollani A., Colella S. and K. Tsiaras, 2011: A data assimilation tool for the Pagasitikos Gulf ecosystem dynamics: methods and benefits. Journal of Marine Systems, INSEA Special Issue, (in press).


• Banks A.C., Prunet P., Donnadille J., Pina P., Chimot J., Jeansou E., Lux M., Petihakis G., Korres G., Triantafyllou G., Fontana C., Estournel E., Ulses C. and L. Fernandez, 2011: A Satellite Ocean Colour Observation Operator System for Eutrophication Assessment in Coastal Waters. Journal of Marine Systems, INSEA Special Issue, (in press).


Petihakis G., Tsiaras K., Triantafyllou G., Korres G., Tsagaraki T., Tsapakis M., Vavillis P., Pollani A. and C. Frafoulis, 2011: Application of a complex ecosystem model to evaluate effects of finfish culture in Pagasitikos Gulf, Greece. Journal of Marine Systems, INSEA Special Issue, (in press).


• Tsagaraki T., Petihakis G., Tsiaras K., Triantafyllou G., Tsapakis M., Korres G., Zervakis V., Frangoulis C., and I. Karakassis, 2011: Beyond the cage: Ecosystem Modelling for impact evaluation in Aquaculture. Ecological Modelling, (in press).


• Politikos, D., Triantafyllou G., Petihakis G., Tsiaras, K., Somarakis, S., Ito, S.I. and B. Megrey, 2011: Application of a bioenergetics growth model for European anchovy (Engraulis encrasicolus) linked with a lower trophic level ecosystem model. Hydrobiologia (in press).


Petihakis G., Triantafyllou G., Tsiaras, K., Korres G., Pollani, A. and I. Hoteit, 2009: Eastern Mediterranean Biogeochemical Flux Model. Simulations of the Pelagic Ecosystem. Ocean Science, 5, 29-46.


Petihakis G., Smith C.J., Triantafyllou G., Sourlantzis G., Papadopoulou K.-N., Pollani A., and G. Korres, 2007: Scenario testing of fisheries management strategies using a high resolution ERSEM-POM ecosystem model. ICES Journal of Marine Science, 64, 1627-1640.


• Triantafyllou G., Korres G., Hoteit I., Petihakis G. and A. C. Banks, 2007: Assimilation of Ocean Colour Data into a Biogeochemical Flux Model of the Eastern Mediterranean. Ocean Science, 3, 397-410.


• Dounas C., Davies I., Triantafyllou G., Koulouri P., Petihakis G., Arvanitidis C., Sourlatzis G. and A. Eleftheriou, 2007: Large scale impacts of bottom trawling on shelf primary productivity. Continental Shelf Research, 27, 2198 – 2210.


• Nittis K., Tziavos C., Bozzano R., Cardin V., Thanos Y., Petihakis G., Schiano M.E., and F. Zanon, 2007: The M3A multi-sensor buoy network of the Mediterranean Sea. Ocean Science, 3, 229-243.


Petihakis G., Drakopoulos, P., Nittis, C., Zervakis, V., Christodoulou, C. and C. Tziavos, 2007: M3A system (2000 – 2005) – operation and maintenance. Ocean Science, 3, 117–128.


• Hoteit I., Triantafyllou G. αnd G. Petihakis, 2005: Efficient Data Assimilation into a Complex 3-D Physical-Biogeochemical Model Using a Semi-Evolutive Partially Local Kalman Filter. Annales Geophysicae, Vol.23, pp1-15.


• Triantafyllou G., Hoteit I., Korres G., and G. Petihakis, 2005: Ecosystem Modeling and Data Assimilation of Physical-Biogeochemical processes in Shelf and Regional Areas of the Mediterranean Sea. Applied Numerical Analysis and Computational Mathematics, Vol. 2, No. 2, pp 262-280.

• Petihakis G., Triantafyllou G., Pollani, A., Koliou A. and A. Theodorou, 2005: Field data analysis and application of a complex water column biogeo-chemical model in different areas of a semi-enclosed basin: Towards the development of an ecosystem management tool. Marine Environmental Research, Vol. 59, pp 493-518.


• Hoteit I., Triantafyllou G. αnd G. Petihakis, 2004: Towards a data assimilation system for the Cretan sea ecosystem using a simplified Kalman filter. Journal of Marine Systems, Vol.45, 159-171.


• Triantafyllou G., Korres G., Petihakis G., Pollani A., and A. Lascaratos, 2003: Assessing the phenomenology of the Cretan Sea shelf area using coupling modelling techniques. Annales Geophysicae, Vol.21, pp 237-250.


• Hoteit I., Triantafyllou G. and G. Petihakis and J.I. Allen, 2003: A singular evolutive Kalman filter to assimilate real in-situ data in a 1-D marine ecosystem model. Annales Geophysicae, Vol.21, pp 389-397.


• Triantafyllou G., Petihakis G. and J.I Allen, 2003: Assessing the performance of the Cretan Sea ecosystem model with the use of high frequency M3A buoy data set. Annales Geophysicae, Vol.21, pp 365-375.


• Triantafyllou G., Hoteit I. and G. Petihakis, 2003: A singular evolutive interpolated Kalman filter for efficient data assimilation in a 3-D complex physical-biogeochemical model of the Cretan Sea. Journal of Marine Systems Vol.40-41, pp 213-231.


• Nittis K., Tziavos C., Thanos I., Drakopoulos P., Cardin, V., Gacic M., Petihakis G. and R. Basana, 2003: The Mediterranean Moored Multi-sensor Array (M3A): System Development and Initial Results. Annales Geophysicae, Vol.21, pp 75-87.


• Petihakis G., Triantafyllou G., Allen J. I., Hoteit I. and C. Dounas, 2002: Modelling the Spatial and Temporal Variability of the Cretan Sea Ecosystem. Journal of Marine Systems, Vol.36(3-4), pp 173-196.


• Pollani A., Triantafyllou G., Petihakis G., Nittis K, Dounas C. and C. Koutitas, 2001: The POSEIDON operational tool for the prediction of floating pollutant transport. Marine Pollution Bulletin, Vol.43(7-12), pp 270-278.


• Triantafyllou G., Petihakis G., Dounas C. and A. Theodorou, 2001: Assessing marine ecosystem response to nutrient inputs. Marine Pollution Bulletin, Vol.43(7-12), pp 175-186.


Petihakis G. I., Triantafyllou G. N. and C. G. Koutitas, 2001: Prediction and prevention of oil contamination and monitoring of the benthic structure and related fisheries in connection with the pollution impact. Systems Analysis Modelling Simulation, (International Journal of Systems Science) Vol.41(1), pp 169-197.


Petihakis G., Triantafyllou G. and A. Theodorou, 2000: A numerical approach to simulate nutrient dynamics and primary production of a semi-enclosed coastal ecosystem (Pagasitikos Gulf, Western Aegean, Greece). Periodicum Biologorum, Vol.102(1), pp 339-348.


• Triantafyllou G. N., Petihakis G. I. and A. I. Pollani, 2000: Numerical modelling – An environmental management approach for waste disposal in the marine environment. Systems Analysis Modelling Simulation, (International Journal of Systems Science) Vol.39(1), pp 101-129


• Koutsoubas D., Dounas C., Arvanitidis C., Kornilios S., Petihakis G., Triantafyllou G. and A. Eleftheriou, 2000: Macrobenthic community structure and disturbance assessment in Gialova Lagoon (Ionian Sea), ICES Journal of Marine Science, Vol.57(5), pp 1472-1480


• Triantafyllou G., Petihakis G., Dounas C., Koutsoubas D., Arvanitidis C. and A. Eleftheriou, 2000: Temporal variations in benthic communities and their response to physicochemical forcing: A numerical approach, ICES Journal of Marine Science, Vol.57(5), pp 1507-1516


Petihakis G., Triantafyllou G.N., Koutsoubas D., Allen I. and C. Dounas, 1999: Modelling the annual cycles of nutrients and phytoplankton in a Mediterranean lagoon (Gialova, Greece), Marine Environmental Research, Vol.48(1), pp 37-58


• Dounas C., Koutsoubas D., Arvanitidis C., Petihakis G., Drummond L. and A. Eleftheriou, 1998. Biodiversity and the impact of anthropogenic activities in Mediterranean lagoons: The case of Gialova lagoon, SW Greece, Oebalia, 24(5), pp 77-91


• Nengas I., Alexis M., Davies S.J., and G. Petichakis, 1995: Investigation to determine the digestibility coefficients of various row materials in diets for the gilthead seabream (Sparus aurata), Aquaculture Research, Vol.26(3), pp 185-194

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