Water quality trend analysis in Eymir Lake, Ankara

YENİLMEZ F., KESKİN F., AKSOY A.

PHYSICS AND CHEMISTRY OF THE EARTH, cilt.36, ss.135-140, 2011 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 36
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1016/j.pce.2010.05.005
  • Dergi Adı: PHYSICS AND CHEMISTRY OF THE EARTH
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.135-140
  • Anahtar Kelimeler: Mann-Kendall test, Water quality, Trend analysis, Eymir Lake, NONPARAMETRIC-TESTS
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

In this study, trends in selected water quality parameters in Eymir Lake over a period of 10 years are analyzed using the Mann-Kendall test. Analyzed water quality parameters are dissolved oxygen (DO), total phosphorus (TP), total suspended solids (TSS), and secchi depth (SD). In addition, trends in the yearly averages of precipitation, lake volume, and ambient temperature are examined. According to Mann-Kendall test results, precipitation, volume and ambient temperature values exhibit decreasing trends in 1998-2008. DO and TSS exhibit increasing trends while TP and SD have decreasing trends in Eymir lake. The change in the volume of the lake has a significant impact on the trends of DO, TSS, and SD. These results indicate that, besides eutrophic conditions, water balance and drought conditions significantly impact the water quality of Eymir Lake. (C) 2010 Elsevier Ltd. All rights reserved.