title: Evaluation of spatial and temporal variations of inorganic nutrient species in the eastern Aegean Sea waters.
abstract: In this study, the state of the five stations' quality was assessed on the basis of determination of temporal and spatial variability of nutrients with physicochemical variables. Besides this, organic matter of sediment, secchi disc depth and suspended solids were also determined. The samples were collected seasonally from different areas such as harbor and important touristic marinas along the eastern Aegean during June 2008-2009. As a result, the nutrients ranged between NH₄: 0.10-25.6, NO₂: 0.01-1.5, NO₃: 0.19-7.0, o.PO₄: 0.17-6.8, TPO₄: 0.32-9.6 and Si: 0.30-13.8 μM, respectively. Precipitation leads to large changes in temperature, salinity, dissolved oxygen and nutrients. The highest nutrient values in this study were observed during the rainy season except o.PO₄-P and TPO₄-P. However, the physico-chemical variables have exhibited considerable temporal variations while nutrients showed spatial differences. The relatively high nutrient increase in the sampling stations coupled with surface runoff events during rainy period and pollution arising from both point and non-point sources.
authors.affiliation: Dokuz Eylul University, Institute of Marine Sciences & Technology, Inciralti, 35340 Balçova-Izmir, Turkey.
authors.forename: Sinem
authors.initials: S
authors.lastname: Aydin-Onen
authors.forename: Ferah
authors.initials: F
authors.lastname: Kocak
authors.forename: Filiz
authors.initials: F
authors.lastname: Kucuksezgin
mesh_terms: D004784:Environmental Monitoring; D008522:Mediterranean Sea; D009584:Nitrogen / Q000032:analysis*; D010758:Phosphorus / Q000032:analysis*; D011891:Rain; D054712:Salinity; D012621:Seasons; D012623:Seawater / Q000737:chemistry*; D013696:Temperature; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014877:Water Pollution, Chemical / Q000706:statistics & numerical data*
chemical_list: D014874:Water Pollutants, Chemical; D010758:Phosphorus; D009584:Nitrogen