Water Column Chemistry of Late Holocene Lake Bafa, Eastern Coast of the Aegean Sea (Turkey)
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This study represents the preliminary results of the first dataset of diatom and bulk stable carbon organic isotopic (δ13Corg) compositions of the sediments collected from Lake Bafa. The aim of this study was to investigate the water column properties of the lake during the Late Holocene, by facilitating salinity and organic matter productivity markers. The isotopic radiocarbon (δ13Corg) dating and diatom-faunal analyses were performed for the first time on a variety of sediments from Lake Bafa. They were retrieved from the modern lacustrine basin depo-center, containing the phases of a freshwater lake, an alkaline lagoon and a marine environment respectively. 14C-AMS-dated sediments represent a complete geological archive reflecting the last 2.5 kyr time period, beginning with a depositional phase dominated by marine conditions represented by enhanced salinity ranges and aquatic productivity signals. This stage was followed by a long period (i.e. 1.75–0.8 ka BP) dominated by a lagoonal environment. During the final stage between 0.8 ka BP and recent, fresh water lake conditions in a closed lacustrine system have occurred.
KeywordsAegean coastal Lake Bafa Water column chemistry Stable organic carbon isotopes Diatom species
We would like to thank the project funds provided kindly by the Tubitak-Ardeb-1001/1002 (P.Nr: 113Y070; P.Nr: 115Y766) and Istanbul University (Bap P.Nr: 28942; P.Nr: 17828). For his valuable constructive comments and suggestions, we would like to thank Prof. Dr. Mehmet Keskin. We thank the ITU-EMCOL team and students, Dursun Acar, Bilgehan Toksoy, Burak Yalamaz and Cansu Demirel for their support to retrieving the core samples or discrete sampling.
- 1.Brückner, H., Müllenhoff, M., Handl, M., van der Borg, K.: Holocene landscape evolution of the Büyük Menderes alluvial plain in the environs of Myous and Priene (Western Anatolia, Turkey). Z. Geomorphol. 127, 47–65 (2002)Google Scholar
- 2.Bulkan, Ö., Zhu, X., Wei, W.: Carbon stable isotopic composition of the residual freshwater ecosystems around coastal plain of Great Menderes Delta (Western Anatolia). In: Final Proceedings, 32nd International Meeting of Sedimentology, Marrakech, Morocco (2016)Google Scholar
- 3.Bulkan, Ö., Zhu, X., Wei, W., Yalamaz, B., Çağatay, M.N.: Organic geochemical characterization of Lake Bafa sediments, accumulated during the last 4500 years (Western Turkey). In: Final Proceedings, 28th International Meeting on Organic Geochemistry, Florence, Italy (2017)Google Scholar
- 4.Bulkan, Ö., Sancar, Ü., Sarı, E., Kırcı-Elmas, E., Yıldız, T., Çağatay, M.N., Acıpınar, S., Demirel, C., Toksoy, B., Acar, D.: Bafa Gölündeki Holosen İklimsel Değişimlerinin Organik Maddenin Karbon-Hidrojen İzotopik Bileşimi, Lipid Biyolojik İşaretçiler (Uzun Zincirli Alkenon:Lcas) ve Diyatome Kayıtlarına Yansımaları, Final Report, Tubitak, P.Nr.113Y070 (unpublished, in Turkish), 265 pp. (2018)Google Scholar
- 5.Hakyemez, H.Y., Erkal, T., Göktaş, F.: Late Quaternary evolution of the Gediz and Büyük Menderes grabens, Western Anatolia, Turkey. Quatern. Sci. Rev. 18, 549–554 (1999)Google Scholar
- 7.Müllenhoff, M., Handl, M., Knipping, M., Brückner, H.: The evolution of Lake Bafa (Western Turkey)—sedimentological, microfaunal and palynological results. Coastline Rep. 1, 55–66 (2004)Google Scholar
- 8.Round, F.E., Crawford, R.M., Mann, D.G.: The Diatoms: Biology and Morphology of the Genera, p. 747. Cambridge University Press, Cambridge (1990)Google Scholar
- 9.Stuiver, M., Reimer, P.J., Reimer, R.W.: CALIB 5.0. (Program and Documentation at http://calib.qub.ac.uk/calib) (2005)