TY - JOUR T1 - YUMURTALIK KIYISAL SULARINDA (KUZEY DOĞU AKDENİZ) MESOZOOPLANKTON STOKLARININ 2012-2017 YILLARI ARASINDAKİ ZAMANSAL DEĞİŞİMİ TT - TEMPORAL CHANGES OF MESOZOOPLANKTON STANDING STOCKS IN COASTAL WATERS OF YUMURTALIK (NORTHEASTERN MEDİTERRANEAN) IN YEARS 2012-2017 AU - Terbıyık Kurt, Tuba PY - 2019 DA - January DO - 10.3153/AR19001 JF - Aquatic Research JO - Aquat Res PB - Nuray ERKAN ÖZDEN WT - DergiPark SN - 2618-6365 SP - 1 EP - 15 VL - 2 IS - 1 LA - tr AB - Pelajikekosistemin temel taşlarından olan zooplanktonun kalitatif ve kantitatifdeğişimi ekosistemde meydana gelen çevresel değişimlerinde göstergesi olarakbilinmektedir. Bu bağlamda, çalışmada mesozooplanktonun miktarsal durumu vegrup kompozisyonu karakterize edilerek İskenderun Körfezi kıyısal sularındakimevcut durumun tespit edilmesi amaçlanmıştır. Mesozooplankton örneklemeleriNisan 2012 ve Aralık 2017 yılları arasında mevsimsel sıklıkta dipten yüzeyevertikal olarak 5 istasyonda gerçekleştirilmiştir. Toplam 32 zooplankton grububulunmuş olup, bunlardan 15 tanesi holoplankton grubu, gerisi meroplanktongruplarıdır. Holoplankton olan gruplar genellikle çalışma alanında baskınolmakla birlikte, sadece 2013 ve 2015 yılı yaz mevsimlerinde Echinodermatabaskın olarak gözlenmiştir. Çalışma alanında holoplanktonda genellikle Copepodabaskın grup olarak gözlenirken, sıcak periyotlarda Cladocera ve Echinodermatabaskındır. 2015 yılı sonbaharında ise Doliolida baskın grup olarakgözlenmiştir. Bolluk ve biyokütle değerleri arasındaki fark istatistiki olarakönemsiz olarak bulunmakla birlikte (p>0,05), mevsimsel değişimleristatistiki açıdan önemli çıkmıştır (sırasıyla, p<0,01, p<0,05).Mesozooplankton biyokütle değerleri ilkbahar mevsiminde 0,5-21,6 mg/m3,yazın 2,2- 23,7 mg/m3, sonbaharda 2-27,9 mg/ m3 ve kışın1,3-17,3 mg/m3 arasında değişim göstermiştir. Sonuç olarak,İskenderun Körfezi’nde mesozooplankton mevcut stoklarının miktarı tüm örneklemeperiyodu boyunca küçük ölçekte dalgalanmış olup, grup komposizyonu bakımındanmeroplanktona bağlı olarak kısmen değişim göstermiştir. KW - Mesozooplankton KW - Bolluk KW - Biyokütle KW - Grup Kompozisyon KW - İskederun Körfezi KW - İskederun Körfezi N2 - The variation inqualitative and quantitative situation, as well as composition of zooplankton, majorkeystones in the pelagic ecosystem, are known as be an indicators of changingenvironmental conditions. In this In the present work, we particularlysought to determine the current situationof the coastal waters in Iskenderun Bay by characterizing the quantitativestatus and group composition of mesozooplankton. Mesozooplankton samplings wastaken vertically at 5 stations from surface to bottom between April 2012 andDecember 2017 at seasonal scale. A total of 32 zooplankton groups wereidentified, of which 15 were holoplankton and the rest were meroplankton.Although holoplanktonic groups are generally predominant, only Echinodermatawas dominant in summer of 2013 and 2015. In the study area, Copepoda wasgenerally seen as a dominant group in holoplankton, while Cladocera andEchinodermata were dominant in warmer periods. Doliolida was only observed asthe dominant group in the only autumn of 2015. Although variations in abundanceand biomass among years ​​was statistically insignificant (p>0.05), seasonalchanges were statistically significant (p<0.01, p<0.05, respectively).Mesozooplankton biomass varied between 0.5-21.6 mg / m3 in thespring season, 2.2- 23.7 mg/m3 in the summer, 2-27.9 mg/m3 inthe autumn and 1.3-17.3 mg/m3 in winter.As a result, the mesozooplankton standing stocks in ofIskenderun Bay fluctuated at a small scale during the whole samplingperiod, however, group composition waspartly differed due to variations in meroplankton groups. CR - Acar-Deniz, Z., Gönençgil, B. (2017). Türkiye Sıcaklık Ekstremlerindeki Değişkenlikler Variations in Temperature Extremes in Turkey. Coğrafya Dergisi, 35, 41-54. CR - Atienza, D., Saiz, E., Calbet, A. (2006). Feeding Ecology of the Marine Cladoceran Penilia avirostris: Natural diet, Prey Selectivity and Daily Ration. Marine Ecology Progress Series, 315, 211-220. CR - Avşar, D. (1999). 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UR - https://doi.org/10.3153/AR19001 L1 - https://dergipark.org.tr/en/download/article-file/586714 ER -