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Abstract

Several reports are available from different ecological niche. An important example is the Mediterranean region where most of the water bodies represent oligotrophic condition. Many works have concentrated on the Eastern Mediterranean Sea, an extreme oligotrophic environment (Krom et al. 2003) at the far end of a prominent west–east with increasing oligotrophy gradient (Turley et al. 2000). This ultra-oligotrophic condition is testified by high light penetrance (Berman et al. 1984a; Ignatiades 1998); low nutrient concentrations; very low values for phytoplankton; primary productivity and cell abundance (Sournia 1973; Berman et al. 1984a, b; Dowidar 1984; Azov 1986; Bonin et al. 1989; Psarra et al. 2000; Christaki et al. 2001), with a dominance of small-size phytoplankton (Li et al. 1993; Yacobi et al. 1995; Ignatiades 1998; Ignatiades et al. 2002); and outstandingly low bacterial abundance and production (Robarts et al. 1996). Several groups from the Mediterranean countries have worked on the phytoplankton species composition and productivity from the Eastern Mediterranean region. Assessments of the trophic status of habitat by application of empirical indices, statistical analysis and other analytical methods have drawn significant attention from different groups of plankton biologists from this region. Such characterization have been carried out in the Adriatic region using the OECD statistical methodology by Vollenweider and Kerekes (1982) as well as by Vollenweider et al. (1998). Similar assessments were also performed from selected areas of the Aegean Sea (Saronikos Gulf, Island of Rhodes, Mytilini Island) with the use of nutrient and/or phytoplankton species data and the application of statistical analyses (Ignatiades et al. 1992; Stefanou et al. 2000), ecological indices (Karydis and Tsirtsis 1996) and simulation modelling (Tsirtis 1995).

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Pal, R., Choudhury, A.K. (2014). Case Study. In: An Introduction to Phytoplanktons: Diversity and Ecology. Springer, New Delhi. https://doi.org/10.1007/978-81-322-1838-8_5

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