Gamochaeta coarctata: Türkiye için yeni bir yabancı bitki kaydı

Abstract

Asteraceae (Compositae), Türkiye’de en geniş bitki familyası olup 138 cins ve 1336 türle temsil edilir. Bu çalışmada Gamochaeta coarctata (Willd.) Kerguélen (Asteraceae) Türkiye Florası için yeni bir yabancı tür olarak kaydedilmiştir. İstanbul-Kemerburgaz Kent Ormanı’nda 2021 yılı mayıs ayında yürüyüş yolu kenarında 250 den fazla bitkiden oluşan bir populasyon halinde görülmüştür. Bu bilinmeyen bitkinin tespiti için bitkiden numune alınarak fotoğrafları çekilmiştir Araştırıldığında, bitkinin Türkiye Florasında yer almadığı görülmüş ve yapılan literatür taraması ile bitki Gamochaeta coarctata olarak teşhis edilerek Türkiye için yeni bir yabancı tür olarak teşhis edilmiştir. Bitkinin alanda dağılımını belirlemek için arazide dolaşılmış ve farklı güzergahlardaki yürüyüş yollarının kenarlarında, orman kenarında ve baraj gölü kenarındaki çayırda bitkinin yerleştiği gözlemlenmiştir. Türün bölgeye nasıl ve ne zaman geldiği bilinmemektedir. Hızlı yayılma kabiliyetinde  olan bu yabancı türün bulunduğu bölgede istilacı olma potansiyelinin yüksek olduğu düşünülmektedir. 

Keywords

• Gamochaeta coarctata
• istilacı
• yeni kayıt
• yabancı tür
• flora
• Türkiye

Gamochaeta coarctata: A new allien species for Turkey

Abstract

Asteraceae is the largest plant family in Turkey and represented by 138 genera and 1336 species in Turkey. In this paper, Gamochaeta coarctata (Willd.) Kerguélen (Asteraceae) which is native in South America, is reported for the first time as a new alien species for Turkey (İstanbul). The plant was noticed, in a population of more than 250 individuals on the side of walking path in May 2021. In order to identify this unfamiliar plant, a sample was taken from the plant and its photographs were taken. When researched, it was seen that the plant is not included in the Flora of Turkey and with the literature review, the plant was identified as Gamochaeta coarctata which a new alien species for Turkey. In order to determine the area distribution of the plant, it was wandered around the land and it was observed that the plant became established on the edges of the walking paths on different routes, on the forest edge and in the meadow by the dam lake. In this paper, the species was introduced with taxonomical and morphological features. Its ecological impact was evaluated with potential risks also. The species can be considered in Turkey as an alien  species and have a rapid expansion potential, but further field investigations on this species are necessary to avoid its diffusion. 

Keywords

• Gamothaeta coarctata
• invasive
• new record
• allien plant
• Turkey

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