Culha, Saniye TurkKaraduman, Fatma RabiaGundogdu, AyseBaris, Kamil Emre2025-03-232025-03-2320221730-413X1897-3191https://doi.org/10.26881/oandhs-2022.2.07https://hdl.handle.net/11486/4788This study aims to examine the physicochemical parameters of seawater (temperature, pH, salinity, dissolved oxygen, suspended particulate matter, ammonium-nitrogen, nitrite-nitrogen, nitrate-nitrogen, and phosphate-phosphorus, burnable organic matter in the sediment), and possible effects of pollution in Sigacik Bay where different anthropogenic activities are carried out. Samples of surface seawater (0 m), bottom seawater (2 m), and sediment were collected monthly from four sampling sites between September 2013 and September 2014. Annual mean nutrient values were determined as 1.6 +/- 0.14 mu g.at.NH4+-N l(-1), 0.1 +/- 0.01 mu g.at.NO2--N l(-1), 0.8 +/- 0.08 mu g.at.NO3--N l(-1), 0.7 +/- 0.08 mu g.at.PO43--P l(-1), SPM 21.4 +/- 0.33 mg l(-1). The BOM content in the sediment was 5.6 +/- 0.39%. As a result of the study, it was determined that Sigacik Bay was polluted by anthropogenic point and non-point source pollution. According to the water quality criteria, the bay was found to be in the group of polluted seawater in terms of phosphate phosphorus.eninfo:eu-repo/semantics/openAccesswater qualitynitrogenphosphorussedimentPCAAegean SeaArticle51218920210.26881/oandhs-2022.2.072-s2.0-85134515522Q3WOS:000824863600007Q4