Seasonal Variation of Water Quality Parameters and Plankton in a Shallow Greek Lake

Abstract

Water quality was monitored monthly in five sampling statio~ls during 1998-1999 in Lake Pamvotis (NW Greece), a shallow eutrophic lake influenced mostly by external and internal organic loads. Important relationships were found between physicochemical and biological parameters as elucidated by redundancy analysis. Organic load, as expressed by the chemical oxygen demand, affected cyanophyte biomass in the lake while temperature was the most important factor for chlorophyte abundance. Organic load also affected the abundance of zooplankton, but no relationship was found between the concentration of dissolved oxygen and zooplankton.

Detrital carbonate influences on bulk oxygen and carbon isotope composition of lacustrine sediments from the Mediterranean

“…Annual mean precipitation of~1200 mm is currently approximately equal to evaporation (Tzedakis, 1994;Romero et al, 2002). The lake waters are fresh and recent agricultural and industrial expansion along the lake-shore means that the lake is eutrophic to hypereutrophic (Romero et al, 2002;Kagalou et al, 2003, Wilson et al, 2008. There is little surrounding natural vegetation remaining in the basin due to cultivation and grazing, although sparse open-canopy brushwoods, Juniperus scrub and low thickets (dominated by the evergreen oak, Q. coccifera) occur on uncultivated slopes (Higgs et al, 1967;Roucoux et al, 2008).…”

Population And Diversity Of Phytoplankton On Ramadan In Situ Gintung ‎Lake, South Tangerang, Banten Province, Indonesia

“…Chlorophyta found in the dry season, correlated with the transparency (Çelik & Ongun, 2007), pH, high of nitrite (Sulastri, 2011) and increase the temperature to 39 °C (Shanthala et al, 2009). The previous study showed that the temperature is an important variable for the Chlorophyta (Kagalou et al, 2003).…”

Shrimps of an ancient Balkan lake: Bionomy and conservation

“…Additionally, lake's littoral zone is characterized by high water level fluctuations due to the widely practiced periodic burning of the reed beds (Phragmites australis), vegetation cutting by machines and construction of dikes along the northern shoreline. The water level falls to approximately 1.5 m below the full supply level (470 m above the sea level) because of the high evaporation, irrigation and no surface inflows, affecting significantly the littoral benthic fauna (Kagalou et al 2003(Kagalou et al , 2006. The severe water fluctuations have as a result, occasionally vegetation loss and refugees' extinction, which can represent negative effects especially for the shrimp species.…”