TY - JOUR T1 - PRESENT STATUS OF STURGEON IN THE LOWER SAKARYA RIVER IN TURKEY AU - Memiş, Devrim AU - Tosun, Deniz Devrim AU - Yamaner, Güneş AU - Tunçelli, Gökhan AU - Gessner, Jörn PY - 2019 DA - April DO - 10.3153/AR19007 JF - Aquatic Research JO - Aquat Res PB - Nuray ERKAN ÖZDEN WT - DergiPark SN - 2618-6365 SP - 53 EP - 60 VL - 2 IS - 2 LA - en AB - The Hydro development started in the 1960swith building 3 major dams in the upstream section of the Sakarya River. Duringthe 1980s the development of the floodplain sections of the river had itsonset. Under these altered conditionsHuso huso, Acipenser nudiventris,andAcipenser sturiodisappeared from the river until the1980s but Acipenser gueldenstaedtii, as well asAcipenser stellatus,wereshown to still reproduce in the remaining section of the river by 2013. Theconstruction of three additional HEPPs begun in the river section belowPamukova, blocking migration and cutting off major spawning sites. While fishpassage facilities were included in the construction of the HEPPs since the1980s, their design and location, as well as the maintenance rendered themcompletely dysfunctional. A survey was carried out in the remaining freeflowing section of the lower river in 2014 to determine fish community composition andwater quality at 4 stations below Adasu HEPP. While a few A. gueldenstaedtiijuveniles were observed in Sakarya River mouth close to the Black Sea,onlyone young-of-the- (YOY) (A. stellatus; W:25g; TL:28cm) wasreported which was captured from the Lower Sakarya River. KW - Lower Sakarya River KW - Sturgeon KW - HEPP KW - Fish Passage KW - Fish Passage CR - Akmirza, A., Yardımcı R.E. (2014). Fish parasites of the Sakarya River, Turkey. Journal of Academic Documents for Fisheries and Aquaculture, 1(1), 23-29. CR - Anon (1992). General directorate of the state water, investigation of pollution aspects of Sakarya–Seyhan Basins and report of determination of quality classes of this basins, 5, General Directorate of the State Water, Ankara. CR - Anon (2013). Preparation Project of Action Plan of River Basin Protection; Proposal Report of Sakarya River Basin. 5118601 (Çtüe.13.134). Türkiye Bilimsel Ve Teknolojik Araştırma Kurumu Marmara Araştırma Merkezi Çevre Enstitüsü. Temmuz, 2013 Gebze, Kocaeli. CR - Anon (2018). Pan-European Action Plan For Sturgeon. Convention on the Conservation of European Wildlife and Natural Habitats. Standing Committee 38th Meeting Strasbourg, 27-30 November 2018. Document prepared by the World Sturgeon Conservation Society and WWF, Strasbourg, France. CR - Arısoy, S. (1968). Fisheries in Sakarya (Sakarya vilayeti çevresinde su ürünleri ekonomisi ve kooperatiflesme ile kalkinma imkan ve problemleri). Istanbul University Economics Faculty Publication No: 1391, Istanbul, 182 p. 182. CR - Brinkhurst R.O. (1963). A Guide for the Identification of British Aquatic Oligochaeta, Freshwater Biological Associaton Scientific Publication, 22:55. CR - Buysse, D., Coeck, J., Maes, J. (2008). Potential re-establishment of diadromous fish species in the River Scheldt (Belgium). Hydrobiologia, 602(1), 155-159. CR - Delage, N. (2015). Experimental study of environmental conditions effects (temperature, oxygen, pollutants) on survival, development and behaviour of European sturgeon, Acipenser sturio, embryo-larval stages (PhD Thesis). Bordeaux University, French. CR - Doğan, E., Çeribaşı, G., Akkaya, U. (2016). Investigation for Effecting of Dam to River Flow Regime by Trend Analysis Method: Case Study of Sakarya River. Karaelmas Fen ve Mühendislik Dergisi, 6(1), 50-55. (In Turkish). CR - DWA, (2014). Fischaufstiegsanlagen und fischpassierbare Bauwerke-Gestaltung, Bemessung, Qualitätssicherung., Mai, Hennef, Deutschland, 334 pp. CR - Edwards, D., Doroshov, S. (1989). Sturgeon and Seatrout Fisheries Development, FAO, Turkey Technical Cooperations Programme. Appraisal of the Sturgeon and Seatrout Fisheries and Proposals for a Rehabilitation Programme, Rome, 35 pp. CR - FAO, (2001). Fishing Gear types. Fyke nets. Technology Fact Sheets. Retrieved from http://www.fao.org/fishery/ (accessed 10.10.2013). CR - Gümrükçüoğlu, M., Baştürk, O. (2007). Coğrafi bilgi sistemleri kullanılarak Sakarya nehri kirlilik yükünün belirlenmesi. In TMMOB Harita ve Kadastro Mühendisleri Odası Ulusal Coğrafi Bilgi Sistemleri Kongresi (pp. 1-5). Trabzon, Turkey. CR - Işık, S., Şaşal, M., Doğan, E. (2006). Investigation on downstream effects of dams in the Sakarya River. Gazi University Journal of Engineering and Architecture, 21(3), 401-408. CR - Khodorevskaya, R.P., Ruban, G.I., Pavlov, D.S. (2009). Behaviour, migrations, distribution, and stocks of Sturgeons in the Volga-Caspian Basin. Neu Wulmstorf; World Sturgeon Conservation Society Special Publication, No. 3, p.233 CR - Official Gazette. (2004). Water Pollution and Control Regulations. Ministry of Environment and Urbanization, No: 25687, 31.12.2004. http://www.mevzuat.gov.tr (accessed 20 January 2018). CR - Rosenthal, H., Gessner, J., Deniz, H.; Memiş, D., Ustaoğlu Tırıl, S., Zengin, M., and Altan, Ö. (2015). National Action Plan for the Conservation and Restoration of the Sturgeons of Turkey. (Edits: Rosenthal, H., Gessner, J), Ministry of Food, Agriculture and Livestock, Ankara. Saltabaş, L., Şaşal, M., Işık, S., Doğan, E. (2003). Examination of the current changes in the Lower Sakarya River. Sakarya Üniversitesi, Fen Bilimleri Enstitüsü Dergisi, 7(2), 9-15. CR - Şengörür, B., İsa, D. (2001). Factor analysis of water quality observations in the Sakarya River. Turkish Journal of Engineering and Environmental Sciences, 25(5), 415-426. CR - Tırıl Ustaoğlu, S., Memiş, D. (2018). An Overview of the Factors Affecting the Migration of Sturgeons in Yeşilırmak. Aquatic Sciences and Engineering, 33(4), 138-144. UR - https://doi.org/10.3153/AR19007 L1 - https://dergipark.org.tr/en/download/article-file/677697 ER -