no image available

Mr Demetris Kletou


PhD Student


  • 2002-2005 > B.Sc. Biological Sciences, Major Marine Biology (GPA 3.4/4), Florida Atlantic University , USA
  • 2005-2007 > M.Sc. Master of Science in Marine Biology/Ecology (thesis option, GPA 3.9/4), Florida Atlantic University , USA
  • 2008-2012 > Part-time Biology teacher at Institute of Maths and Sciences, Limassol, Cyprus
  • 2012-Onwards > Part-time Biology teacher at American Academy, Limassol, Cyprus
  • 2008-Onwards > Director and marine biologist at Marine & Environmental Research (MER) Lab Ltd - an environmental consultant SME based and operating in Cyprus
  • 2011-Onwards > MPhil/PhD candidate Marine Studies at UoP

Research interests

I am particularly interested in the functioning of marine ecosystems and the impacts of anthropogenic activities on the communities and habitats. Exponential increase of human population is associated with climate change, loss of habitat, pollution, spreading of invasive species and over-exploitation of limited resources that continue to be some of the most significant threats to marine ecosystems. Environmental monitoring, conservation and mitigation strategies may help provide valuable insights, prevent the alarming degradation of marine ecosystems and conserve biodiversity at all levels. 

In November of 2011, Marine & Environmental Research (MER) Lab Ltd received funding from the Research Foundation of Cyprus, to coordinate a 2-year project, titled 'A holistic approach for the evaluation of ecological status of coastal areas: the case of heavily impacted Vasiliko bay in South Cyprus' in which I act as the scientific coordinator. Research partners include the Oceanographic Centre of Cyprus, the Department of Environment and Geomatic Ltd. This project aims to assess the ecological status at multiple stations across an anthropogenically heavily impacted bay (3 harbours, 4 fish farms at operation, power station, army naval base, cement factory, tourism,fisheries....). The assessment is made by applying biotic indexes on the benthic Biological Quality Elements (BQEs; Water Framework Directive), namely: Posidonia oceanica, macroalgae and macrofauna; complemented with physico-chemical data. In association with the Department of Environment, this proposal will help create a protocol for studying/monitoring coastal areas of Cyprus. 

In October 2012 IDREEM kicked off. This is a 4-year European FP7 project that aims to create smarter greener growth for European fish farming by integrating multi-trophic aquaculture systems to typical open-sea European fish farms. The concept of IMTA is simple, it uses co-cultivar species from different trophic levels that absorb fish farming waste streams (currently causing eutrophication) and convert them into useful biomass. The pan-European consortium includes 15 partners (including MER) from 7 different countries and is coordinated by the Scottish Association for Marine Science. My role in this project is to act as the Principle Investigator of Cyprus.

Maria Rousou, Konstantinos Ganias, Demetris Kletou, Alexandros Loucaides, Markos Tsinganis (2014). Maturity of the pufferfish Lagocephalus sceleratus in the southeastern Mediterranean Sea. Sex Early Dev Aquat Org 1:35-44. Available at:

Demetris Kletou and Jason M. Hall-Spencer (2012). Threats to Ultraoligotrophic Marine Ecosystems, Marine Ecosystems, Antonio Cruzado (Ed.), ISBN: 978-953-51-0176-5, InTech. Available at:

Koch, M.S., Kletou, D.C., Tursi, R., (2009). Alkaline phosphatase activity of water column fractions and seagrass in a tropical carbonate estuary, Florida Bay. Coastal Estuarine and Shelf Science 83:403-413. Available at:

Additional information

I’m a Marine Biologist graduate (BSc 2002-2005, MSc 2005-2007 at Florida Atlantic University); carried out my master's research work in P-limited Florida Bay investigating seasonal phosphorus fractions and alkaline phosphatase activity of the seagrass Thalassia testudinum and fractionated water column. In 2008 I returned to Cyprus where I have been operating as a part-time GCE Biology teacher (currently at American Academy Limassol) and a full-time marine biologist/ecologist researcher and Director of Marine & Environmental Research (MER) Lab Ltd

At MER, my work focuses on marine environmental consulting services and research. Since 2009, I have coordinated and conducted many baseline assessments, monitoring studies and EIA studies to assess the impacts of anthropogenic activities to the coastal marine environment of Cyprus / Eastern Mediterranean. Currently I am the scientific coordinator of a 3 yr (2011-2014) local programme funded by the Research Foundation of Cyprus that aims to assess the ecological status of heavily impacted Vasiliko Bay (South Cyprus) using multiple WFD biotic and abiotic indices. Since late 2012, I am the Principle Investigator of the Cypriot research team in a 4 yr FP7-ENV-2012 project titled'Increasing Industrial Resource Efficiency in European Mariculture' (IDREEM). IDREEM has set up Integrated Multi-Trophic Aquaculture pilot units in six countries and has two principal objectives:bio-mitigation of organic effluents and increase of productivity and profit of European fish farms.

I got accepted in the MPhil/PhD Marine Studies Programme of the University of Plymouth in 2011, with Dr Jason Hall-Spencer as Director of Studies and Professor Martin Attrill as 2nd Supervisor. I progressed to the PhD stage of my programme in 2014. My research project 'Human Impacts to Oligotrophic Marine Ecosystems' is conducted part-time and distanced and is supported by my research work carried out at MER.


Marine & Environmental Research (MER) Lab Ltd