Artvin (Türkiye) İli’nde Yayılış Gösteren Doğal Centaurea ve Psephellus Taksonları

Öz

Bu çalışma, Artvin (Türkiye) ilinde doğal yayılış gösteren Centaurea ve Psephellus taksonlarının tespiti amacıyla yapılmıştır. Bu çalışma kapsamında Artvin ilinden toplanan 370 bitki materyalinin stereozoom mikroskop altında incelenmesi sonucunda Centaurea cinsine ilişkin 27 takson ve Psephellus cinsine ait 10 takson teşhis edilmiştir. Fitocoğrafik bölgeler esas alınarak tespidi gerçekleştirilen taksonların dağılımlarında Centaurea taksonlarının 3 adeti (%11.1) Doğu Karadeniz, 8 adeti (%29.6) ve 16 adet (%59.3) İran- Turan ve birden fazla bölgede yayılış gösterenlerdir. Psephellus türlerinin 6 adeti (%60) Avrupa- Sibirya, 2 adeti (%20) İran-Turan ve birden fazla bölgede yayılış gösterenler 2 adet (%20)’dir. Araştırma alanında tespit edilen Centaurea cinsine ait 27 takson 5’i endemik, 4’ü endemik olamayan nadir takson olup endemizm oranı %22.2’dir. Psephellus cinsine ait 10 türden 5’i endemik, 3’ü endemik olmayan nadir tür olup endemizm oranı %50 olarak belirlenmiştir. IUCN’e göre endemik/endemik olmayan 37 adet taksonun tehlike durumu değerlendirilerek tespit edilen taksonlar için bir tanı anahtarı oluşturulmuştur. Ayrıca her bir takson için endemizm durumu, fitocoğrafik bölgesi, çiçeklenme dönemi, habitat ve doğal yayılış gösterdiği yükselti aralığı gibi bilgiler verilmiştir.

Anahtar Kelimeler

• Artvin
• Centaurea
• Endemik
• Doğal yayılış
• Psephllus

Natural Centaurea and Psephellus Taxa Distributed in Artvin (Türkiye) Province

Öz

This study was conducted to identify Centaurea and Psephellus taxa naturally distributed in Artvin (Türkiye). In this study, upon examining 370 plant specimens collected from Artvin province under a stereozoom microscope, 27 taxa of the genus Centaurea and 10 taxa of the genus Psephellus were identified. Threats and threat categories for 37 taxa naturally distributed in Artvin are presented. The distribution of identified taxa according to phytogeographic regions; 3 (11.1%) of the Centaurea taxa are from the Eur-Sib, 8 (29.6%) are from Irano-Turan, and 16 (59.3%) of which are distributed in more than one region. 6 (60%) of the Psephellus species are from the Euro-Siberian, 2 (20%), are from Irano-Turan and 2 (%20) of which are distributed in more than one region. Of the 27 taxa belonging to the genus Centaurea, 6 are endemic and 5 are non-endemic and rare taxa, and the endemism rate is 22.2%. Of the 10 species belonging to the genus Psephellus, 5 taxa are endemic and 3 are non-endemic and rare species, and the endemism rate is determined as 50%. The threat status of 37 endemic and non-endemic and rare taxa was assessed according to IUCN threat categories. A diagnostic key was created for the identified taxa, and information such as endemism status, phytogeographic region, flowering period, habitat, and elevation range in which it naturally spreads were provided for each taxon.

Anahtar Kelimeler

• Artvin
• Centaurea
• Endemic
• Naturally distributed
• Psephellus

Kaynakça

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