EVALUATION OF THREAT CATEGORIES OF THE ENDEMIC PLANTS OF DEVECI MOUNTAINS (YOZGAT-TOKAT/TURKEY)

Abstract

This study based on the vegetation field survey between April 1993 and October 1997 is done for the purpose of determining the vegetation of Deveci Mountains (Yozgat-Tokat). During the plant vegetation seasons, 1400 plant samples were collected from the research area. 456 taxa and 262 genera to be belonging to 63 families were determined. In the survey area, five different vegetation types coniferous and deciduous forest, scrub, steppe, rocky and wet grassland were present. The threat categories of the endemic species of Deveci Mountains were determined and evaluated according to ‘Red Data Book of Turkish Plants’, which was prepared by using IUCN criteria. A total of 65 plant taxa were determined as endemic (14.25% of all taxa). Highest ratios of endemic taxa were from families Fabaceae (16.92%) and Lamiaceae (16.92%). Phytogeographic regions (Chorotypes) among endemic taxa were listed as Irano-Turanian 35 (53.85%), Eastern Mediterranean 3 (4.62%), Euxine 2 (3.08%), Euro-Siberian 1 (1.54%), while phytogeographic origin of (24 taxa) 36.92% of endemic taxa were Unknown. As endemic taxa and their threat categories are evaluated, 1 (1.54%) species was found to in Endangered, 4 (6.15%) in Vulnerable, 7 (10.77%) in Near Threatened and 53 (81.54%) in Least Concern according to IUCN criteria. When the plant taxa were classified and analysed according to Raunkiaer’s life forms, Hemicryptophytes were determined to be the most common plant taxa (76.92%), Chamaephytes come next (9.23%), is followed by the Therophytes (7.69%), and then come Phanerophytes (4.62%). While Geophytes have the least number of plant taxa with 1 species (1.54%).

Keywords

• Deveci Mountains,A5,A6,B5,Yozgat,Tokat,Turkey,endemic plants,threat categories,IUCN

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