Evaluation of Water Quality in Eutrophic Shallow Lakes: Case Study on Lake Uluabat, Turkey

Abstract

Physical and chemical characteristics of lake w a t e r s a n d t h e i r v a r i a t i o n s g o v e r n t h e environmental, ecological, and biological status of the lakes. Lakes are also subjected to a high human impact. Many studies examined the physical and chemical status of the lake water and demonstrated which factors controlled the water quality, ecologic status and eutrophication patterns [1-6]. Lake Uluabat is one of the most important wetland area in Turkey and is increasingly threatened by pollution [1]. Organic and inorganic pollution has also affected the nutrient status of the lake, and in this respect, the greatest concern deals with eutrophication [7-8]. Intensive agricultural activities, industrial activities, and mining in the lake basin have adversely influenced the water quality in the lake. Water quality of the lake is somewhere limited. It is therefore essential to prevent and control water pollution and to implement regular monitoring programs for water quality management [9]. Lake Uluabat is one of the richest lakes in terms of aquatic plants besides fish and bird populations in Turkey. For this reason, the Lake was placed under protection by the RAMSAR agreement in 1998 and the living lakes partnership program of 2002. The aim of this study was to examine water quality variables in Lake Uluabat each month between August 2013 and July 2014, to classify the lake water quality according to the "SWQMR". Also, eutrophic level of the lake has also been identified. This study will provide baseline data for future water quality and management studies.