Gökçeada'nın Sert Substratum Habitatlarının Mollusk Çeşitliliği

Yıl 2023, Cilt: 28 Sayı: 3, 803 - 817, 29.12.2023

Zeynep Tekeli , Herdem Aslan , Ayşegül Bali

https://doi.org/10.53433/yyufbed.1199833

Öz

Bu çalışmada, Gökçeada kıyılarının sert substratum habitatlarının 0-0.5 m arası derinliklerinde bulunan mollusc tür çeşitliliği nitel ve nicel olarak araştırılmış olup, araştırma 2010 ve 2011 yıllarında mevsimsel ve aylık olarak gerçekleştirilmiştir. Ayrıca, 2021 yılında Marmara Denizi’nde oluşan ve akıntılar nedeniyle Gökçeada’nın da etkisinde kaldığı müsilaj olayının mollusk faunasını nasıl etkilediği 2021 yılının yaz aylarında araştırılmıştır. Toplam 76 mollusk türünün tespit edildiği bu çalışmada 27 tür Gökçeada için yeni kayıttır. Aylık örneklenen Yıldız Koy istasyonunda en baskın tür Cardita calyculata (Linnaeus, 1758) iken, diğer tüm örnekleme istasyonlarında en baskın tür Musculus costulatus (Risso, 1826)’tur. Tepeköy istasyonu en fazla tür ve birey sayısına sahip istasyon olarak bulunmuştur. Bu durumun nedenleri arasında bölgeye insan ulaşımının sınırlı olması ve farklı habitat tiplerinin yer alması gösterilebilir. Yıldız Koy istasyonuna belediye tarafından turistler için kıyıya kum dökülmesi sonucu, 2010 yılında tespit edilmiş yumuşakça tür çeşitliliğinde, bu uygulamadan vazgeçilmesi ile 2021 yılında büyük bir artışın gerçekleştiği ortaya çıkarılmıştır. Diğer taraftan, Gökçeada kıyılarında yaşayan mollusk türlerinin 2021 yılındaki müsilajdan akut olarak etkilenmediği saptanmıştır. Ancak gelecek yıllarda meydana gelebilecek olumsuz etkileri tespit etmek ve bu bölgedeki tür çeşitliliğini korumak için, bu bölgenin izlenmesi ve raporlanması için daha detaylı çalışmalara ihtiyaç duyulmaktadır.

Anahtar Kelimeler

Gökçeada, Infralittoral bölge, Mollusc, Müsilaj Sert substrat

Proje Numarası

FHD-2010-84; FHD-2011-64

Mollusc Diversity of Hard Substrate Habitats of Gökçeada Island

Öz

In the present study, molluscs diversity between 0-0.5 m depths of the hard substrate habitats of Gökçeada coasts was investigated qualitatively and quantitatively, seasonally, and monthly in 2010 and 2011. In addition, in summer months of 2021, samples were taken to investigate the mucilage impact on the mollusc fauna, which occurred in the Marmara Sea in 2021 and affected Gökçeada coasts due to the currents. A total of 76 mollusc species were identified and 27 of the determined species are new records for Gökçeada. Among the found species, while Cardita calyculata (Linnaeus, 1758) was the most dominant species at the Yıldız Koy station sampled monthly, Musculus costulatus (Risso, 1826) was the dominant one at all other sampling stations. The Tepeköy station was found to has the highest number of species and individuals. As the main reason for this can be indicate the limited human access to the region and the presence of various habitats. Mollusc species diversity, which was detected in 2010 due to the pouring of sand for tourists by the municipality at Yıldız Koy station, was found to be increased greatly in 2021 after this practice was abandoned. It was also detected that the mollusc species distributed on the coasts of Gökçeada were not acutely affected by the mucilage event occurred in 2021. However, more detailed studies need to be monitoring and report the negative effects that may occur the mucilage event on the species diversity of the region in the coming years.

Anahtar Kelimeler

Gokceada Island, Hard substrate, Infralittoral zone, Mollusc, Mucilage

Destekleyen Kurum

This project has been funded by Çanakkale Onsekiz Mart University, ÇOMÜ-BAP projects.

Proje Numarası

FHD-2010-84; FHD-2011-64

Teşekkür

We would like to thank Pınar İşmen, Ayşe Karpuzoğlu, Özge Bacak, İrem Yılmaz for sorting out mollusks.

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