A newly formed lagoon under eutrophication on the coast of Kumlubent-Gelibolu, Çanakkale Strait (Dardanelles), Sea of Marmara

Year 2024, Volume: 11 Issue: 3, 11 - 18, 28.09.2024

Nazlı Olğun Kıyak , Ufuk Tarı

https://doi.org/10.30897/ijegeo.1518757

Abstract

Lagoons are semi-enclosed and dynamic water bodies that are highly vulnerable to coastal dynamics and environmental stressors associated with anthropogenic activities and climate change. We investigated a pristine lagoon, hereafter referred to as Kumlubent Lagoon, located on the coast of Gelibolu in the Çanakkale Strait in the Sea of Marmara. The evolution of coastal morphology and Kumlubent Lagoon’s formation was investigated by using satellite images collected between 2006 and 2020. In addition, water samples were collected from the lagoon and the shore on April 15 and 16, 2022 for nutrient (NO3, NO2, NH4, PO4, and Si), chlorophyll-a (chl-a) and total organic carbon (TOC) analyses in order to determine the trophic status of the lagoon. Our results showed that the nearshore deposition of coastal sediments gradually formed a sand barrier that isolated the lagoon from the sea in the year 2013. The nutrient analyses showed a clear indication of eutrophication of the lagoon. Accordingly, 29.784 µm/L of NH4, 1.168 µm/L of PO4, 34.15 (±1.54) µg/L of chl-a and 40.50 mg/L of TOC were measured in the water samples from the Kumlubent Lagoon. Our study suggests that the deposition of longshore drifted sediments in a southwesterly direction along the Çanakkale Strait plays a dramatic role in the development of coastal morphology in the Gelibolu-Kumlubent region. The rapid eutrophication of the Kumlubent Lagoon may be related to the high nutrient input from agricultural activities in the region.

Keywords

Lagoon, Kumlubent-Gelibolu, Çanakkale Strait, coastal morphology, long-shore drift, eutrophication

Supporting Institution

Scientific and Technological Research Council of Türkiye (TÜBİTAK)

Project Number

119Y269 and 119Y567

Thanks

This study was funded by the Scientific and Technological Research Council of Türkiye (TÜBİTAK) Project #119Y269 and TÜBİTAK Project #119Y567. We thank TÜBİTAK for their support. We would also like to thank Emin Berke Tülümen and Sıla Bedir for their support in the laboratory work and image analyses. We would also like to thank Erdem Kıyak for his support in field sampling.

References

• APHA (1999) Standard Methods for the Examination of Water and Wastewater, 20 ed. American Water Works Association, Water Environment Federation, 6666 West Quincy Avenue, Denver CO.
• Balkis, N., Toklu-Alicli, B. Balci, M. (2012) Evaluation of Ecological Quality Status with the Trophic Index (TRIX) Values in the Coastal Waters of the Gulfs of Erdek and Bandırma in the Marmara Sea in: Voudouris, D. (Ed.), Ecological Water Quality - Water Treatment and Reuse. InTech.
• Beşiktepe, Ş.T., Sur, H.İ., Latif, A.M., Oğuz, T., Ünlüata, Ü. (1994) The circulation and hydrography of the Marmara Sea. Progress in Oceanography 34, 285-334.
• Boix, D., Gascón, S., Sala, J., Martinoy, M., Gifre, J., Quintana, X.D. (2005) A new index of water quality assessment in Mediterranean wetlands based on crustacean and insect assemblages: the case of
• Catalunya (NE Iberian peninsula). Aquatic Conservation: Marine and Freshwater Ecosystems 15, 635-651.
• Boynton, W.R., Hagy, J.D., Murray, L., Stokes, C., Kemp, W.M. (1996) A comparative analysis of eutrophication patterns in a temperate coastal lagoon. Estuaries 19, 408–421.
• Carlson, R.E. (1977) A trophic state index for lakes. Limnology and Oceanography 22, 361-369.
• Carter, R.W.G., Forbes, D.L., Jennings, S.C., Orford, J.D., Shaw, J., Taylor, R.B. (1989) Barrier and lagoon coast evolution under differing relative sea-level regimes: examples from Ireland and Nova Scotia. Marine Geology 88, 221-242.
• Çelik, O. İ., Çelik, S., Gazioğlu, C. (2022). Evaluation on 2002-2021 CHL-A Concentrations in the Sea of Marmara with GEE Enhancement of Satellite Data. International Journal of Environment and Geoinformatics, 9(4), 68-77. doi.org/10.30897/ ijegeo.1066168
• Davidson-Arnott, R. (2011) Wave-Dominated Coasts, in: Wolanski, E., McLusky, D., Farrant, A.R. (Eds.), Treatise on Estuarine and Coastal Science. Academic Press, pp. 73-116.
• Gazioğlu, C., Gökaşan, E., Algan, O. Yücel, Z. Y., Tok, B., Doğan, E. (2002). Morphologic features of the Marmara Sea from multi-beam data, Mar. Geol., 190(1– 2): 397–420, doi.org/10.1016/S0025-3227(02)00356-0 .
• Ilicak, M., Federico, I., Barletta, I., Mutlu, S., Karan, H., Ciliberti, S.A., Clementi, E., Coppini, G., Pinardi, N. (2021) Modeling of the Turkish Strait System Using a High Resolution Unstructured Grid Ocean Circulation Model. Journal of Marine Science and Engineering 9, 769.
• Khawfany, A.A., Aref, M.A., Taj, R.J. (2017) Human-induced changes in sedimentary facies and depositional environments, Sarum area, Red Sea coast, Saudi Arabia. Environmental Earth Sciences 76, 61.
• King, C.A.M. and Cullagh, J.M.C. (1971) A Simulation Model of a Complex Recurved Spit. The Journal of Geology 79.
• Nixon, S.W. (1982) Nutrient dynamics, primary production and fisheries yields of lagoons. Oceanologica Acta Special Issue, 357-371.
• Özalp, H.B. (2021) First massive mucilage event observed in deep waters of Çanakkale Strait (Dardanelles), Turkey. Journal of the Black Sea/ Mediterranean Environment 27, 49-66.
• Polat, S.Ç. and Tugrul, S. (1995) Nutrient and organic carbon exchanges between the Black and Marmara Seas through the Bosphorus Strait. Continental Shelf Research 15, 1115-1132.
• Sakınç, M., Yaltırak, C. (1997) Güney Trakya Sahillerinin denizel Pleyistosen çökelleri ve paleocografyası. MTA Journal 119, 43-62.
• Savun-Hekimoğlu, B., Gazioğlu, C. (2021). Mucilage Problem in the Semi-Enclosed Seas: Recent Outbreak in the Sea of Marmara. International Journal of Environment and Geoinformatics, 8(4), 402-413. https://doi.org/10.30897/ijegeo.955739
• Shalby, A., Elshemy , M., Zeidan, B.A. (2021) Modeling of climate change impacts on Lake Burullus, coastal lagoon (Egypt). International Journal of Sediment Research 36, 756-769.
• Tarı, U., Olgun-Kiyak, N., Avsar, U., Yaltırak, C., Sunal, G. (2023) Sedimentary traces of tsunami events recorded in the Sea of Marmara during the last millennium (Kumlubent Lagoon, NW Turkey), XXI INQUA Congress, Rome-Italy.
• Tarı, U., Olğun-Kıyak, N., Orkan, Ö., Sunal, G., Yaltırak, C. (2024a) Assesment markers of sea level changes in the western Marmara coasts (Gallipoli Peninsula-Gokceada) and their temporal and spatial distributions and role of the neotectonics of the region, The Scientific and Technological Research Council of Türkiye (TÜBİTAK), ÇAYDAG 119Y567 Project Report, 185 p.
• Tarı, U., Sunal, G., Welte, C., Yaltırak, C., Özcan, O., Wertnik, M. (2024b) Late Holocene submerged beachrocks in the Sea of Marmara (Tekirdag-Altinova, NW Turkey): Revealing tectonic uplift rate through radiocarbon dating. Quaternary International. doi.org/10.1016/j.quaint.2024.07.007.
• Tekeli, Z., Aslan, H. (2023) Zonation in littoral macrobenthic assemblages in the Çanakkale Strait (Dardanelles). Marine Biodiversity 53.
• Tuzcu-Kokal, A., Olgun, N., Musaoğlu, N. (2022) Detection of mucilage phenomenon in the Sea of Marmara by using multi‑scale satellite data. Environmental Monitoring and Assessment, 194 (585), 194–585.
• Tülümen, E.B., Tarı, U., Olgun Kıyak, N., Kapan Ürün, S. (2024) Paleoclimatic study of Kumlubent Lagoon based on Oxygen-18 and Carbon-13 isotope data from sequenced mollusc shells on the western coast of the Sea of Marmara, NW Türkiye, EGU General Assembly Vienna, Austria. doi.org/10.5194/ egusphere-egu24-8682.
• Ünlüata, Ü., Oğuz, T., Latif, M.A., Özsoy, E. (1990) On the physical oceanography of the Turkish Straits, in: Prat, L.J. (Ed.), he Physical Oceanography of Sea Straits. NATO/ASI Series, Kluver, Dordrecht, pp. 25-60.
• Vollenwieder, R.A., Giovanardi, F., Montanar, G., Rinaldı, A. (1998) Characterization of trophic conditions of the marine coastal waters with special reference to the NW Adriatic Sea: Proposal for a trophic scale, turbidity and generalized water quality index. Environmentrics 9, 329-357
• Yalçın, B., Artüz, M.L., Pavlidou, A., Çubuk, S., Dassenakis, M. (2017) Nutrient dynamics and eutrophication in the Sea of Marmara: Data from recent oceanographic research. Science of The Total Environment 601-602, 405-424.