Samsun (Türkiye) İli’ndeki nadir kumul bitki türleri

Öz

Bu çalışmada Samsun ilinde kumul ekosistemlerde yayılış gösteren nadir türler araştırılmıştır. Araştırma Samsun kıyısında Çobanyatağı (Terme), Sindel, Hürriyet ve Costal (Çarşamba), Cernek, Sahilkent (Bafra) ve Doyran (Alaçam) lokalitelerinde yürütülmüştür. Kumul komuniteleri Nisan 2010’dan Temmuz 2012’ye kadar, en küçük alanlar metodu kullanılarak 16 m2 lik örnek parseller şeklinde örneklenmiştir. Çobanyatağı, Sindel, Cernek, Sahilkent ve Doyran lokalitelerinde üst kumsal (sürüklenme çizgisi), primer kumul, esas kumul, geçiş kumulu ve stabil kumul zonlarından oluşurken, Costal ve Hürriyet lokalitelerinde ise özellikle yerleşim alanlarının açılması nedeniyle stabil kumul zonu tamamen yok olmuş, geçiş zonu da önemli derecede kesintiye uğramıştır. Nadirlik indeks formülü ile her lokalitede bulunan zonların nadir türleri belirlenmiştir. Sonuç olarak her bir lokalite bağımsız olarak değerlendirilmiş ve nadirlik indeks formülüne göre 47 türün nadirlik indeksinin düşük olduğu tespit edilmiştir.

Anahtar Kelimeler

• Karadeniz
• Kıyı habitatlar
• Nadirlik indeksi

Rare dune plant species in Samsun Province, Turkey

Öz

In the present study, the rare species of the city Samsun which distributed in sand dune ecosystem were investigated. The study was carried out in the localities Çobanyatağı (Terme), Sindel, Hürriyet and Costal (Çarşamba), Cernek, Sahilkent (Bafra) and Doyran (Alaçam) of Samsun sand dune. Sand dune communities were sampled from April 2010 to July 2012 by using minimal area method in 16 m2 plots. The coastal sand dunes of Çobanyatağı, Sindel, Cernek, Sahilkent (Bafra) and Doyran (Alaçam) is consist of upper beach/driftline, primary/embryonic, main, transitional and, fixed dune zones ) while the fixed zone is totally disappeared and transitional zone is significantly interrupted in the localities Costal and Hürriyet especially due to the building settlement. Rare species on each coastal dune zones in all localities were determined according to the rarity index formula. As a result, each locality was assessed independently, and it is indicated that the rarity index of 47 species is low.

Anahtar Kelimeler

• Black Sea
• Coastal habitats
• Rarity index

Kaynakça

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