Abstract
The floristic diversity of Handüzü Natural Park and Environs as a protected area within Kaçkar Mountains chain, situated in Güneysu and İkizdere counties of Rize (Turkey) was studied. Overall, 517 taxa belong to 352 genera and 104 families were determined. Twenty-three of these taxa are represented in division Pteridophyta while 494 of them are in division Spermatophyta. Ten of Spermatophytes are in subdivision Gymnospermae and 484 of them are in subdivision Angiospermae. 89 of Angiosperms are in class Liliopsida while 395 of them in class Magnoliopsida. The endemism ratio in the study area is 4.25% (22 taxa). Phytogeographic elements are listed in order as: multiregional-unknown phytogeography root 47.4% (245), Euro-Siberian 47.2% (244), Irano-Turanian 2.1% (11), and Mediterranean 3.3% (17). The life spectrum of taxa is as follows: Hemicryptophytes 48.7% (252), phanerophytes 16.1% (83), therophytes 15.7% (81), chamaephytes 10.4% (54), and cryophytes 9.1 %, (47). The richest families in taxa are Asteraceae (52), Poaceae (35), Rosaceae (31), Fabaceae (25), and Lamiaceae (24). In the study area 22 taxa were found as threatened taxa at different threatened levels. The results of the study was compared with the results of 10 studies carried out in Rize and neighboring cities.
Highlights
The total number of plant species in the world is increasing day by day
According to Payne (2016) more than 250.000 plant species have been identified after binominal nomenclature concept of Linnaeus (1973)
The vascular flora of Handüzü Natural Park and Environs consist of 517 taxa, of which 412 species, 84 subspecies and 21 varieties within 352 genera and 104 families. 494 of these taxa are Spermatophyte while 23 remainders are Pteridophyte
Summary
ÖZET Kaçkar Dağları silsilesinde korunan bir alan olarak, Rize (Türkiye)’nin, Güneysu ve İkizdere ilçelerinde bulunan Handüzü Tabiat Parkı ve çevresinin floristic çeşitliliği çalışılmıştır. 104 familyaya ait 352 cins ve 517 takson belirlenmiştir. ÖZET Kaçkar Dağları silsilesinde korunan bir alan olarak, Rize (Türkiye)’nin, Güneysu ve İkizdere ilçelerinde bulunan Handüzü Tabiat Parkı ve çevresinin floristic çeşitliliği çalışılmıştır. 104 familyaya ait 352 cins ve 517 takson belirlenmiştir. Taksonlardan 23 tanesi Pteridophyta, 494 tanesi ise Spermatophyta bölümünde temsil edilmektedir. Spermatophyta bölümüne ait taksonlardan 10'u Gymnospermae, 484'ü ise Angiospermae alt bölümünde bulunur. Taksonların endemizm oranı %4.25 (22 takson) olarak belirlenmiştir. Çalışma alanındaki taksonların fitocoğrafya bölgelerine göre dağılımı; fitocoğrafik bölgesi bilinmeyenler %47.4 (245), Avrupa-Sibirya %47.2 (244), İran-Turan %2.1 (11) ve Akdeniz %3.31 (17)'dir. Taksonların hayat formları şu şekildedir: Hemikriptofitler %48.7 (252), fanerofitler % 16.1 (83), terofitler %15.7 (81), kamefitler %10.4 (54), and kriptofitler %9.1 (47). Çalışma alanındaki en zengin taksonlu familyalar Asterceae (52), Poaceae (35), Rosaceae (31), Fabaceae (25) ve Lamiaceae (24)'dir. Çalışma alanındaki 22 takson, farklı tehlike kategorilerinde, tehlike altında bulunmuştur
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