Flora of the Gölcük Area (Bolu, Turkey)

Field studies were carried out to determine the vascular flora of the Gölcük area (Bolu) during 1997-1998. At the end of the evaluation of the identification of the collected specimens and the results of previous studies, 80 families, 277 genera, 461 species and 475 taxa in total were determined. | Turk J Bot 31 (2007) 87-107 © TÜB‹TAK Research Article Flora of the Gölcük Area (Bolu, Turkey) Nursel ‹K‹NC‹1,*, Adil GÜNER2 1 Abant ‹zzet Baysal University, Faculty of Science and Letters, Department of Biology, 14280, Bolu - TURKEY 2 Nezahat Gökyi¤it Botanic Garden, ‹stanbul - TURKEY Received: Accepted: Abstract: Field studies were carried out to determine the vascular flora of the Gölcük area (Bolu) during 1997-1998. At the end of the evaluation of the identification of the collected specimens and the results of previous studies, 80 families, 277 genera, 461 species and 475 taxa in total were determined. The rates of species belonging to certain phytogegraphical regions are as follows: the Euro-Siberians (142 spp.), the Irano-Turanians (7 spp.), the Mediterraneans (24 spp.), and phytogeographically unknown (269 spp.). The number of endemic taxa found in the research area is 16; thus the endemism rate is . The largest 3 families are Asteraceae (43 spp.; ), Poaceae (43 spp.; ), and Fabaceae (40 spp.; ). The largest 3 genera are Vicia L. (10 spp.; ), Trifolium L. (8 spp.; ), and Veronica L. (7 spp.; ). Key Words: Gölcük, Bolu, flora, Turkey Gölcük Bölgesinin (Bolu-Türkiye) Floras› Özet: Bu çal›flmada 1997-1998 y›llar› aras›nda Gölcük bölgesinin damarl› bitkiler floras› araflt›r›lm›flt›r. Gölcük ile ilgili daha önceki araflt›rmalar da gözönüne al›narak, bu örneklerin adland›r›lmas› sonucu 80 familyaya ait 277 cins, 461 tür ve toplam 475 takson tespit edilmifltir. Toplam 461 türden 142 (% 30,8) tanesi Avrupa-Sibirya elementi, 24 (% 5,2) tanesi Akdeniz elementi, 7 (% 1,5) tanesi Iran-Turan elementi, geriye kalan 269 (% 58,4) türün ise fitoco¤rafik bölgesi ya belli de¤ildir yada kozmopolittir. Alanda bulunan endemik taksonlar›n say›s› 16 ve endemizm oran› % 3,5'dir. Araflt›rma alan›nda en büyük üç familya s›ras›yla flunlard›r: Asteraceae (43 tür; % 9,3), Poaceae (43 tür; % 9,3), Fabaceae (40 tür;