Günay KELEŞ, Serpil YILMAZ, Mustafa ZENGİN

Possible economic effects of musilage on Sea of Marmara fisheries

Today, with global warming, problems occur arising from the deterioration of ecological balances in all seas of the world. These unexpected events affect the fishing industry quite negatively. As a matter of fact, the emergence of jelly organisms that covered the sea surface by about 80% during the hunting season in the Marmara sea in 2007, damaged both hunting equipment and caused a significant product loss. Thats why many fishermen could not go hunting, lost their nets, waste their fuel, labor, food, etc. Musilage was partially reappeared on the shores of Balıkesir in 2020 and caused great discomfort in the related circles. This study, which was carried out in order to estimate the economic losses that may occur in the event that the musilage re-occurs in 2007, has been carried out in the light of real data. The main material of the research consists of the data obtained from the Ministry of Food, Agriculture and Livestock and General Directorate of Agricultural Research and Policies. In the study, the economic losses that may occur in the event that these organisms reappear in the future are calculated by using proportional calculations of the losses caused by the jelly organisms that occurred in the past in the Marmara Sea,. As a result of the research; it was determined that the fishermen who went fishing during the musilage lost an average of 14123 Euros due to the loss of the product as well as the various expenses they made due to sailing throughout the season. In the study, it was calculated that the decrease in fishing income was 27459 Euros / year on average, and the effect on fishing income was -61.41%.

Keywords:

fishery economics mucilage, , possible economic effect.,

PDF

___

Aktan, Y., Dede, A., Çiftçi, P.S., 2008. Mucilage event associated with diatom and dinoflagellates in Sea of Marmara, Turkey. Harmful Algae News, No. 36, May 2008.
Altın, A., Özen, Ö., Ayyıldız, H., 2015. Temporal Variations of the Demersal Fish Community in the Shallow Waters of Çanakkale Strait, North Aegean Sea, during the Course of a Musilage Event. Turkish Journal of Fisheries and Aquatic Sciences, 15: 353-359 (2015). Doi: 10.4194/1303-2712-v15_2_18
Altuğ, G., Çardak, M., Çiftçi, P.S., 2010. Marmara Denizi‘nde Müsilaj oluşumu ve Bakteriyel Etkileşimler. Marmara Denizi 2010 Sempozyum Bildiriler Kitabı, Öztürk, B. Ed, TÜDAV Yayın No: 32, 456-463.
Anonim, 2017, Marmara Denizi Balıkçılığının Sosyo-Ekonomik Yapısı ve Yönetim Stratejilerinin Belirlenmesi Projesi, Sonuç Raporu, TAGEM/HAYSÜD/2008/09/04/01.
Artüz, L. 2007. Marmara’daki ‘‘salya’’, karışık alg patlaması! http://www.bahcesel.com/content/view/4289/3188/ (Erişim Tarihi, 04/11/2010).
Erazi, RA.1942. Marine Fishes Found in the Sea of Marmara and in the Bosphorus. Revue de la Faculté des Sciences de l’Université d’Istanbul B, 7, 103–115.
Eyüboglu,H.,ve Eyüboglu.Y., 2013. "alg patlaması ve müsilaj oluşumunun denizlerdeki olumsuz etkileri." Tabiat ve İnsan; Sayı: 3 (2013).
Geldiay, R.1969. İzmir Körfezinin Başlıca Balıkları ve Muhtemel İnvasionları. Ege Üniversitesi Fen Fakültesi, Monog., Bornova, 11:135.
Günay, G., Zengin, M., Yılmaz,S., Yılmaz, İ., 2019. Economic Perspective of Fishery Activities Sea of Marmara in Turkey. Turkish Journal of Fisheries.& Aquatic Sciences. 19(8), 669-680. http://doi.org/10.4194/1303-2712-v19_8_05
https://www.dw.com/tr/marmara-denizi-%C3%B6l%C3%BCyor/a-53251836
https://www.tv100.com/deniz-salyasi-musilaj-balikesirin-bandirma-aciklarindaki-deniz-salyasi-musilaj-haber-483389
https://www.virahaber.com/balikcilarin-deniz-salyasiyla-basi-dertte-56319h.htm
İşinibilir M. 2010. Marmara Denizi zooplanktonunun son yıllardaki değişimi ve müsilaj’ın etkisi. Öztürk B.Ed. Marmara Denizi 2010 Sempozyumu, TUDAV 2010, p. 469-482
İşinibilir, M., Yilmaz, I.N. and Piraino, S. 2010b. New contributions to the jellyfish fauna of the Marmara Sea. Italian Journal of Zoology, 77: 179-185.
Slastenenko, E. 1955. Karadeniz Havzası Balıkları. EBK Genel Müd. Yay. 711s.
Tüfekçi, V., Balkıs, N., Beken,P., Ç., Ediger, D., Mantıkçı, M., 2010. Phytopplankton composition and environmental conditions of a mucilage event in the sea of Marmara. Turkish Journal of Biology, 34(2010) 199-210, TUBİTAK. doi:10.3906/biy-0812-1