Flora and vejetation of dutlu daği and its surroundings in oltu district

This study aimed to examine the flora and vegetation structure of Dutludağ and its surroundings, in the southeast of the Eastern Black Sea Region between 2020-2022. The research area, which is between 900-2530 m altitude, is located in A9 square according to the square method applied by Davis and falls within the Iran-Turan phytogeographic area of the Holarctic region. In this study, a total of 773 taxa belonging to 86 families and 390 genera were determined. All of these taxa belong to the Tracheophyta division. Of the taxa of the Tracheophyta division, 1 is in the Gnetopsida, 5 in the pinopsida, 7 in the Polypodiopsida, 683 in the Magnoliopsida and 77 in the Liliopsida. Families with the most taxa in the research area; Asteraceae (121 taxa), Fabaceae (64 taxa), Lamiaceae (62 taxa), Rosaceae (51 taxa), Brassicaceae (42 taxa), Caryophyllaceae (37 taxa), Poaceae (31 taxa), Apiaceae (30 taxa) and Boraginaceae (26 taxa). The phytogeographic regions of 285 taxa (36.92%) determined in the study area were determined. The distribution of taxa according to phytogeographical regions is as follows: 164 (21.24%) are Iran-Turanian, 95 (12.30%) Europe-Siberia, 26 (3.40%) Mediterranean origin, 488 (63.08%) multiregional or Phytogeographical Region undefined. The distribution of taxa according to their life forms are as follows: Hemicryptophytes are 407 taxa, Cryptophytes 108 taxa, Fanerophytes 74 taxa, Kamefits 34 taxa, Terrophytes 145 taxa, Vascular parasites 5 taxa. 83 endemic plants have been identified in the research area, and the endemism rate is 10.75%. The plants were classified according to international IUCN hazard categories. Vegetation studies in the research area were carried out according to the Braun-Blanquet method. As a result of the evaluation made by taking 201 sample areas, 11 plant associations and 2 sub-associations belonging to 6 different vegetation types, all new to science world, were defined.. All maps related to the research area are arranged according to Geographic Information Systems. Alpha and beta vascular plants diversity of vegetation types and plant associations were calculated. According to vegetation types, the highest diversity was determined in degraded forest vegetation, and according to plant associations, in Veronico-Salicetum albae association.