Spatial and temporal dynamics of the steady-state phytoplankton assemblages in a temperate shallow hypertrophic lake (Lake Manyas, Turkey)

Abstract

Spatial and temporal dynamics of phytoplankton biomass and species composition in the shallow hypertrophic Lake Manyas, Turkey, were studied biweekly from January 2003 to December 2004 to determine steadystate phases in phytoplankton assemblages. Steady-state phases were defined when one, two or three coexisting species contributed to at least 80% of the standing biomass for at least 2 weeks and during that time the total biomass did not change significantly. Ten steady-state phases were identified throughout the study peiod. During those periods, Achnanthes microcephala (Kützing) Cleve twice dominated the phytoplankton biomass alone and contributed to more than 50% of the total biomass in seven phases. Microcystis aeruginosa (Kützing) Kützing, Anabaena spiroides Klebahn, Cyclotella stylorum Brightwell, Pediastrum boryanum (Turpin) Meneghini and Phacus pusillus Lemmermann were also represented once in steady-state phytoplankton assemblages. A. microcephala was dominant usually during cold periods of the year, while M. aeruginosa and A. spiroides were usually dominant in warm seasons. The total number of species showed a clear decrease during steady-state phases at all stations. All stations were significantly different in terms of the measured physical and chemical parameters (P \ 0.05) and phytoplankton biomass (F = 117, P \ 0.05).

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“…Kirchneriella and Sphaerellopsis are reported only from Lake Gölköy (Çelekli et al, 2007a). Species belong to these genera are found common in lakes located in the same region; Lake Manyas (Balıkesir) (Şipal et al, 1994;Çelik and Ongun, 2008), Lake Hafik (Kılınç, 1998), Lake Uluabat (Bursa) (Karacaoğlu et al, 2004), Lake Simenit (Samsun) ; Lake Abant (Bolu) (Çelekli et al, 2007b), Lake Gıcı and Lake Liman (Samsun) Gönülol, 2006, 2010).…”

Asynchrony of spring phytoplankton response to temperature driver within a spatial heterogeneity bay of Three-Gorges Reservoir, China

“…Iriarte and Purdie, 2004;Jasprica and Hafner, 2005;Henson et al, 2006;Miller and Harding, 2007;Peeters et al, 2007a) or on the effect of nutrient on phytoplankton biomass (e.g. Hunt and Matveev, 2005;Beamud et al, 2007;Ç elik and Ongun, 2008;Kasprzak et al, 2008;Katano et al, 2008 Tirok and Gaedke (2007) investigated the individual and combined effects of three physical variables (irradiance, temperature and water stability) on algal dynamics using descriptive statistics, multiple regression models and a process-oriented dynamic simulation model, few studies has tried to reveal the relative importance of local (e.g. spatial heterogeneity) and regional (e.g.…”

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“…Genus recorded around the Mamasın Dam Lake were also found in lakes which are the Cubuk-I Dam Lake (Gönülol and Aykulu, 1984) in Lake Manyas (Balıkesir) (Şipal et al, 1994;Çelik and Ongun, 2008), Lake Uluabat (Bursa) (Karacaoğlu et al, 2004), Lake Marmara (Manisa) (Cirik, 1982(Cirik, , 1983(Cirik, , 1984, Lake İkizgöl (Şipal et al, 1996), Lake Kazangöl, (İzmir) (Aysel et al, 1998), Ömerli Reservoir (İstanbul) (Albay and Akçaalan, 2003), Yedigöller Lakes, Lake Abant and Lake Gölköy (Bolu) (Atıcı and Obalı, 2002;Çelekli et al, 2007) located in the different regions.…”