Influence of the extreme conditions on the water quality and material exchange flux in the Strait of Istanbul

Altiok H., Aslan A., Övez S., Demirel N., Yuksek A., Kiratli N., ...More

JOURNAL OF MARINE SYSTEMS, vol.139, pp.204-216, 2014 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 139
  • Publication Date: 2014
  • Doi Number: 10.1016/j.jmarsys.2014.06.005
  • Journal Name: JOURNAL OF MARINE SYSTEMS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.204-216
  • Keywords: Strait of Istanbul, Exchange flux, Nutrients, Fecal indicator bacteria, Water quality, Marine outfalls, BLACK-SEA, BOSPORUS STRAIT, MARMARA, SHELF, FLOW
  • Istanbul Technical University Affiliated: Yes

Abstract

This study focuses on the influence of extreme hydrological events on the water quality of the Strait of Istanbul (Bosphorus), a stratified waterway, polluted by sewage outfalls and non-point sources. Monthly collected water quality parameters (nitrate + nitrite, ortho-phosphate, silicate, dissolved oxygen, total suspended solids, chlorophyll-a and fecal indicator bacteria (fecal coliform and enterococci)) were evaluated together with the hydrological data (salinity, temperature and current flow) for 1 year. Two blockage events, identified as extreme conditions, were detected during the study: a lower layer blockage in February 2003 and an upper layer blockage in October 2003.