Alien Benthic Foraminifers from Turkish Strait System

Yıl 2018, Cilt: 5 Sayı: 1, 68 - 75, 04.04.2018

Engin Meriç M. Baki Yokeş , Zeki Ü. Yümün Mustafa Eryılmaz Fulya Yücesoy Eryılmaz

https://doi.org/10.30897/ijegeo.412343

Cited By: 4

Öz

The Sea of Marmara is under the influence of the Black Sea and the Mediterranean. The salinity difference between these two seas causes the formation of two-layer stratification in the Sea of Marmara, an upper layer formed by the fresh waters of the Black Sea and a denser layer formed below 25 m of depth, by the more saline waters of the Mediterranean. The salinity difference, together with the seasonally changing meteorological events are the major factors which shape the main current system. The Mediterranean waters enter the Dardanelles cross the Sea of Marmara and flows into the Black Sea via İstanbul Strait, which enables the dispersion of the alien foraminifer species already established on the Aegean coasts into the Sea of Marmara. Besides, the Sea of Marmara includes important harbors, suggesting that there is an extensive pressure of alien species introduced by ballast waters. In this study, 322 sediment samples, obtained from different localities in Dardanelles, İstanbul Strait and Sea of Marmara, were investigated for the alien foraminifer species. The results are combined with the previous records in the literature for creating an alien foraminifer checklist for the Sea of Marmara. 10 alien foraminifer species belonging to 9 genera were found in Dardanelles, 32 alien species from 28 genera in the Sea of Marmara, and only 2 alien species from 2 genera were found in İstanbul Strait. Majority of these alien species have Indo-Pacific or Atlantic origin, suggesting that shipping may be the most possible mode of introduction. But it is also observed that some of the Indo-Pacific originated species which were introduced Suez Canal and formed established populations along the Turkish coastline are also found in Dardanelles, indicating that major currents systems are also playing a role in the dispersion patterns of the alien foraminifers in the Sea of Marmara. Another important factor may be the thermal submarine springs found on the bottom of the Sea of Marmara, which may create suitable environmental conditions and enhance the establishment of thermophilic alien species. 

Anahtar Kelimeler

Foraminifers, Alien, Turkish Strait System, Istanbul Strait, Dardanelles

Kaynakça

• Avşar, N. (2010) Benthic foraminiferal assemblages in the coastals environment of the northern Marmara shelf (NW Turkey). Micropaleontology, 56 (5), 495-506.
• Beşiktepe, S., Sur, H.İ., Özsoy, E., Latif M.A., Oğuz, T. (2000). Marmara Denizi’nin Hidrografisi ve Dolaşımı. Marmara Denizi “2000” Sempozyumu, 11-12 Kasım 2000, Bildiriler Kitabı, s.314- 326, İstanbul.
• Beşiktepe, S., Sur, H.İ., Özsoy, E., Latif M.A., Oğuz, T., Ünlüata, Ü. (1994). Circulation and hydrography of the Marmara Sea. Prog. Oceanography, 34: 285-334.
• Çağlar, K. Ö. (1946) Türkiye maden suları ve kaplıcaları. Maden Tetkik ve Arama Enstitüsü yayınları, Seri B, No: 11, 791 s., Ankara.
• Cimerman, F. and Langer,, M. R. (1991) Mediterranean foraminifera. Slovenska Akademija Znanosti in Umetnosti, Akademia Scientiarum et Artium Slovenica. 118 p., 93 plts., Ljubljana.
• Erdik, T. and Beji, S. (2018). Statistical Analyses wave height and wind velocity Distributions for the Sea of Marmara, IJEGEO Vol 5(1):76-83.
• Eryılmaz M., Türker, A., Aydın, Ş. ve Kırca, Z. (2000). İstanbul Boğazında güncel çökel dağılımı. 1. Ulusal Deniz Bilimleri Konferansı, Editör: Z.Uysal, İ. Salihoğlu, (30 Mayıs-2 Haziran 2000), s. 281-283, 299 sayfa, ODTÜ, Ankara.
• Eryılmaz, M. and Yücesoy Eryılmaz, F. (2003). Recent sediment distibution of the southwest Black Sea. Oceanography of the Eastern Mediterranean and Black Sea, (Similarities and differences of two interconnected basins), (Ed. A.Yılmaz), p.944-947, ISBN: 975-288-451-2, Ankara.
• Gülen, D., Sakınç, M., Yalçın, B., Özyiğit, İ.İ., Aygün, A., Çubuk, S., Yılmaz, N. (2017). Marmara Denizi’nin Değişen Oşinografik Şartlarının İzlenmesi Projesi (MAREM), 2016 Senesi Çalışma Verileri. İstanbul, 527 sayfa.
• Gürseler, G., Gülen, D., Sakınç, M., Yalçın, B., Demir, G., Ökten, H. E., Kubanç, C., Kubanç, N., Tezcan, Ö. D., Çubuk, S., Sönmez, B., Yalçın, İ. E., Ceylan, A., Boz, B., Deniz, D.,
• Turhan, H., Tanrıkulu, S., Korkmaz, T. (2014). Marmara Denizi’nin değişen oşinografik şartlarının izlenmesi projesi 2013 senesi çalışma verileri (Ön Raporlar). MAREM (Marmara Environmental Monitoring) Projesi. (Editör: M. Levent ARTÜZ). T. B. B. Yayınları No: 252, İstanbul.
• Kırcı-Elmas, E. (2013) Benthic foraminiferal distribution (living and dead) from a permanently stratified marginal sea (Marmara Sea, Turkey). Journal of Foraminiferal Research, 43 (4), 340-360.
• Kırcı-Elmas, E., Meriç, E. (2016) Foraminiferal fauna of the Sea of Marmara. In: The Sea of Marmara, Marine biodiversity, fisheries, conservation and governance, 401-417 (eds: E.
• Özsoy, M. N. Çağatay, N. Balkıs and B. Öztürk), 957 p., Turkish Marine Research Foundation, No: 42, İstanbul.
• Meriç, E., Avşar, N., Nazik, A., Alpar, B., Yokeş, B., Barut, İ. F., Ünlü, S. (2005). Gemlik Körfezi yüzey çökellerinin foraminifer, ostrakod ve mollusk faunası, foraminifer kavkılarında gözlenen morfolojik anomaliler ile bölgenin sedimentolojik, hidrokimyasal ve biokimyasal özellikleri. M.T.A. Dergisi, 131, 21-48, Ankara.
• Meriç, E., Avşar, N., Nazik, A., Yokeş, B., Ergin, M., Eryılmaz, M., Yücesoy-Eryılmaz, F., Gökaşan, E., Suner, F., Tur, H., Aydın, Ş., Dinçer, F. (2009). Çanakkale Boğazı’nın Güncel bentik foraminifer, ostrakod ve mollusk topluluğunu denetleyen faktörler ile çökel dağılımının jeokimyası. Türkiye Jeoloji Bülteni, 52 (2), 155-215, Ankara.
• Meriç, E., Avşar, N., Nazik, A., Yokeş, M., Barut, İ. F., Eryılmaz, M., Kam, E., Taşkın, H., Başsarı, A., Dinçer, F., Bircan, C., Kaygun, A. (2012). Ilıca Koyu (Çeşme-İzmir) bentik foraminifer-ostrakod toplulukları ile Pasifik Okyanusu ve Kızıldeniz kökenli göçmen foraminiferler ve anormal bireyler. M.T.A. Dergisi, 145, 62-78, Ankara.
• Meriç, E., Yanko, V., Avşar, N. (1995). İzmit Körfezi (Hersek Burnu-Kaba Burun) Kuvaterner istifinin foraminifer faunası. İzmit Körfezi Kuvaterner İstifi (ed. E. Meriç), 105-151, İstanbul.
• Meriç, E., Yokeş, B., Avşar, N., Dinçer, F. (2010) İndo-Pasifik kökenli göçmen foraminiferler Karadeniz’e ulaşıyorlar mı?. TPJD Bülteni, 22 (2), 1-9, Ankara.
• Meriç, E.,Avşar, N., Yokeş, M. B., Dinçer, F. (2014) Atlas of recent benthic foraminifera from Turkey. Micropaleontology, 60 (3-4), 211-398.
• Phipps, M.D., Kaminski, M.A. and Aksu, A.E. (2010). Calcareous benthic foraminiferal biofacies along a depth transect on the southwestern Marmara shelf (Turkey). Micropaleontology 56 (3-4), 377-392.
• Sakınç, M. (2008). Marmara Denizi Bentik Foraminiferleri: Sistematik ve Otoekoloji. Istanbul Teknik Üniversitesi Rektörlüğü, publication no: 1638, 134pp.
• Ünlülata, Ü., Oğuz , T. , Latif, M. A. and Özsoy, E. (1990). On the Physical Oceanography of the Turkish Straits. The Physical Oceanography of Sea Straits Volume 318 of the series NATO ASI Series pp 25-60.
• Yassini, I. and Jones, B. G. (1995). Foraminiferida and Ostracoda from estuarine and shelf environments on the southestern coast of Australia. The University of Wollongong Press, 269 p.
• Yümün, Z. Ü. (2017). The effect of heavy metal pollution on foraminifera in the western Marmara Sea (Turkey). Journal of African Earth Sciences, 129, 346-365.