title: Evaluating the seasonal changes of some water quality parameters of the Buyuk Melen River Basin (Duzce, Turkey).
abstract: In this study, some heavy metal concentrations (Pb, Zn, Fe, Cr, Cu), suspended sediment, chemical oxygen demand (COD), biological oxygen demand (BOD), cyanide, phenol, fecal coliform and total coliform water parameters were determined in the streams (Kucuk Melen, Asarsuyu, Ugursuyu, Buyuk Melen and Aksu) of Buyuk Melen Watershed that provides drinking water to Istanbul in Western Black Sea Region of Turkey. Measurements of water quality parameters were done monthly in eleven separate stations (4 in Kucuk Melen Stream, 1 in Asarsuyu Stream, 1 in Ugur Stream, 1 in Aksu Stream and 4 in Buyuk Melen Stream) from August 2001 to August 2002. The seasonal changes in water quality parameters were evaluated statistically. The results, the parameters, COD, BOD, Pb, Zn, Fe, Cr, Cu, cyanide, fecal coliform, total coliform and suspended sediment showed significant differences among seasons and streams (ANOVA; P <0.05). According to Turkish Standarts (TS) 266, European Union (EU) and World Health Organization (WHO) criteria, the maximum values of each parameter in streams within the Buyuk Melen watershed are recorded and evaluated in this study.
authors.affiliation: Faculty of Forestry, Abant Izzet Baysal University 81320, Duzce, Turkey.
authors.forename: Refik
authors.initials: R
authors.lastname: Karagul
authors.forename: Ayhan
authors.initials: A
authors.lastname: Samandar
authors.forename: Murat
authors.initials: M
authors.lastname: Yilmaz
authors.forename: Lokman
authors.initials: L
authors.lastname: Altun
authors.forename: Reyhan
authors.initials: R
authors.lastname: Gedikli
mesh_terms: D015169:Colony Count, Microbial; D003486:Cyanides / Q000032:analysis*; D004755:Enterobacteriaceae / Q000302:isolation & purification; D004784:Environmental Monitoring; D019216:Metals, Heavy / Q000032:analysis*; D010100:Oxygen / Q000032:analysis; D019800:Phenol / Q000032:analysis*; D045483:Rivers / Q000737:chemistry / Q000382:microbiology; D012621:Seasons; D014421:Turkey; D014871:Water Microbiology; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D003486:Cyanides; D019216:Metals, Heavy; D014874:Water Pollutants, Chemical; D019800:Phenol; D010100:Oxygen