Gemlik Körfezi’nde (Marmara Denizi, Türkiye) yaşayan ostrakod (Crustacea) türlerinin dağılımı, çeşitliliği, habitat tercihleri ve çevresel değişkenlerle etkileşimleri

Abstract

Marmara Denizi’nin güneydoğusunda yer alan Gemlik Körfezi, sanayi tesislerinin yoğunluğu, nüfus artışı ve kentleşme nedeniyle kirlik tehdidi ile karşı karşıyadır. Bu çalışmada Gemlik Körfezi’nde yaşayan ostrakod türleri belirlenerek, dört mevsim boyunca ekolojik parametlerle ostrakod türlerinin etkileşimleri araştırılmıştır. (Ağustos 2011, Kasım 2011, Şubat 2012, Mayıs 2012). 1-96 m arasındaki derinliklerden sekiz familyaya ait 25 ostrakod türü tespit edilmiştir. Gemlik Körfezi’nde en yüksek bolluğa sahip ostrakod türleri olarak Loxoconcha rhomboidea, Xestoleberis communis, Xestoleberis aurantia ve Aurila convexa belirlenmiştir. Spearman korelasyonuna göre ostrakod birey sayısı ile çözünmüş oksijen, sıcaklık, pH ve tür sayısının pozitif ilişkili olduğu belirlenmiştir. Ostrakod birey sayısının, derinlik ve tuzluluk ile de negatif ilişkili olduğu gözlenmiştir.

Keywords

• Ostracoda
• Gemlik Körfezi
• ekoloji
• dağılım
• Marmara Denizi

Distribution, diversity, habitat preferences, and interactions with environmental variables of ostracod (Crustacean) species living in Gulf of Gemlik (The Sea of Marmara, Turkey)

Abstract

The Gulf of Gemlik, located in the southeast of the Sea of Marmara, is facing a pollution threat due to intense of industrial facilities and urbanization with population growth. This study determined the living ostracod species in the Gulf of Gemlik and investigated their interactions with ecological parameters during a four-season period (August 2011, November 2011, February 2012, May 2012). Twenty-five ostracod species belonging to eight families were identified between at depths 1–96 m. The most abundant ostracod species in the gulf was Loxoconcha rhomboidea, Xestoleberis communis, Xestoleberis aurantia, and Aurila convexa. Positive correlations were observed between the individual numbers with dissolved oxygen, temperature, pH, and species numbers, according to Spearman correlations. Negative relationships were observed between individual numbers/depth and individual numbers/salinity.

Keywords

• Ostracoda
• Gulf of Gemlik
• ecology
• distribution
• Sea of Marmara

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