Marmara Denizi Kuzeydoğu Kıyılarında Deniz Kestanesinin (Paracentrotus lividus Lamarck 1816) Bolluğu

Abstract

2023 yılı Ağustos-Eylül ve 2024 yılı Ağustos-Kasım ayları arasında Marmara Denizi’nin kuzeydoğu kıyılarında deniz kestanesi (Paracentrotus lividus Lamarck, 1816) bolluğu üzerine bir çalışma gerçekleştirilmiştir. İstanbul’un Anadolu Yakası’nda yer alan 19 istasyon ile Yalova’nın Armutlu ilçesindeki 1 istasyonda, 0–3 metre derinlik aralığında ABC yöntemi (maske, palet ve şnorkel kullanılarak) ile görsel sayımlar yapılmıştır. 2023 yılı verilerine göre çalışma alanında en yüksek birey sayısına sahip istasyon, metrekare başına ortalama 5 birey ile Pendik-Yunus 1 istasyonu olmuştur. 2024 yılında ise en yüksek birey sayısı, metrekare başına ortalama 18 birey ile Tuzla istasyonunda tespit edilmiştir. Ekosistem temelli sürdürülebilir deniz kestanesi avcılığı yönetimi için, türün bölgedeki stok durumunun bilinmesi gerekmektedir. Mevcut literatür dikkate alındığında, Marmara Denizi için bilinmeyen bu verilerin elde edilmesi, bu çalışmanın temel hedefleri arasında yer almaktadır.

Keywords

• Paracentrotus lividus
• bolluk
• Marmara Sea
• ekosistem temelli balıkçılık yönetimi

Abundance of the Sea Urchin (Paracentrotus lividus Lamarck, 1816) Along the Northeastern Coasts of the Sea of Marmara

Abstract

A study was conducted on the abundance of sea urchin (Paracentrotus lividus Lamarck, 1816) on the North East coast of the Marmara Sea between August-September 2023 and August-November 2024. Visual counts were conducted at 19 stations on the Anatolian side of Istanbul and 1 station in Armutlu, Yalova using ABC (mask, flippers and snorkel) at depths of 0-3 metres. The highest number of individuals in the study area in 2023 was Pendik-Yunus 1 station with an average of 5 individuals per square metre, and in 2024 the highest number of individuals was Tuzla station with an average of 18 individuals per square metre. For sustainable urchin fishery management with an ecosystem approach, the stock status of the species in the region should be known. According to the available literature, it is aimed to reach these data, which are unknown for the Marmara Sea, within the scope of this study

Keywords

• Paracentrotus lividus
• abundance
• Marmara Sea
• ecosystem based fisheries management

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