The Effects of Mucilage on Macroalgae in the Çanakkale Strait

Öz

Microalgal blooms occurred millions of years ago and continue to occur today. In the past, ecosystem dynamics caused these blooms, but climate change and other anthropogenic factors made blooms more intense and frequent today. The present study was carried out to determine the effects of bloom events (müsilaj in Turkish) on macroalgae in the Marmara Sea in 2021. In the strait of Çanakkale (Dardanelles), Karanlık Harbour, Sarısığlık, Özbekaltı and Yapıldak localities were investigated to a depth of 0-1 m between January and October of 2021. At the end of this study, common red, brown, and green algae species in the Dardanelles could not be observed between early May and early September in 2021. Cladophora laetevirens, Ulva linza, U. intestinalis, Gelidium crinale, Gongolaria barbata, and Corallina officinalis taxa were observed beginning mid-September in stations given above.Unless the current wastewater treatment technologies are improved and anthropogenic factors are reduced to environmentally safe levels, new and more intense harmful algal blooms or “mucilage” events are inevitable. The Marmara basin should be monitored constantly by a multidisciplinary committee and required measures should be taken quickly. Otherwise, the “mucilage” event of 2021 may be repeated in a larger area and much more intensely.

Anahtar Kelimeler

• Türkiye
• Mucilage effects
• Macroalgae
• Çanakkkale Strait

Müsilajın Çanakkale Boğazı Makro Alglerine Etkisi

Öz

Mikro-alg aşırı çoğalmaları milyonlarca yıl öncede oluşmuş, günümüzde de oluşmaya devam etmektedir. Önceleri ekosistemin kendi dinamikleriyle oluşan bu alg patlamaları günümüzde antropojenik ve iklim değişimleriyle daha sık ve yoğun yaşanılır hale gelmiştir. Bu çalışma 2021 yılında Marmara Denizi’nde yaşanan müsilaj olayının makro-alglere etkisini belirlemek amacıyla yapılmıştır. Çanakkale Boğazı’nda Karanlık Liman, Sarı sığlık, Özbek altı ve Yapıldak altı kıyıları 0-1m derinliğinde Ocak 2021 - Ekim 2021 tarihleri arasında çalışılmıştır. Çalışma sonunda, Çanakkale Boğazı’nda her yıl gözlenen kırmızı, kahverengi ve yeşil alglere ait taksonlar 2021 Mayıs ayı başından Eylül ayı başına kadar gözlenmemiştir. Eylül ayı ortalarından itibaren belirlenen istasyonlarda sırasıyla Cladophora laetevirens, Ulva linza, U. intestinalis, Gelidium crinale, Gongolaria barbata, Corallina officinalis taksonları görülmeye başlanmıştır. Mevcut arıtma teknolojileri daha çevreci hale getirilmedikçe, antropojenik etki azaltılmadıkça musilaj ve zararlı alg patlamalarının daha yoğun olarak oluşması kaçınılmazdır. Marmara Havzası, multidisipliner bir koruma kurulu ile sürekli takip edilmeli ve gerekli tedbirler hızla alınmalıdır. Aksi takdirde 2021 yılında yaşanan musilaj olayı daha geniş alanda ve daha yoğun biçimde yaşanabilir.

Anahtar Kelimeler

• Müsilaj etkileri
• makroalgler
• Çanakkale Boğazı
• Türkiye

Kaynakça

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