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Articles by Ismet Uysal
Total Records ( 4 ) for Ismet Uysal
  Sezgin Celik , Ismet Uysal , Yusuf Menemen and Ersin Karabacak
  Centaurea consanguinea DC is an endemic species belonging to the family Compositae (Asteraceae) Sect. Acrolophus. Morphology, anatomy, ecology, pollen and achene features of the species have been studied. C. consanguinea is a perennial species growing up 35-70 cm height. Leaf segments and involucral bracts are in different shape at the base and upper part. The root xylem and leaf mesophyll contain secretory canals. Spongy parenchyma in the leaf is highly reduced. The stem epidermis has papilla like ejections. The pollen is tricolporate. C. polyclada grows in the soil poor in calcium, medium in phosphorus and rich in organic matter content.
  Ismet Uysal , Sezgin Celik and Yusuf Menemen
  Centaurea polyclada DC is an endemic species belonging to the family Compositae (Asteraceae) Sect. Acrolophus. Morphology, anatomy, ecology, pollen and achene features of the species have been studied. C. polyclada is a perennial species growing up 60 cm height. Leaf segments and involucral bracts are in different shape at the base and upper part. The root xylem and leaf mesophyll contain secretory canals. Spongy parenchyma in the leaf is highly reduced. The stem epidermis has papilla like ejections. The pollen is tricolporate. C. polyclada grows in the soil poor in calcium, medium in phosphorus and rich in organic matter content.
  Ismet Uysal , Sezgin Celik and Mehmet Oldacay
  The antimicrobial activity of the ethyl asetate, acetone, chloroform and ethanol extracts from Centaurea. pseudoscabiosa Boiss. and Buhse ssp. glechnii (Trautv.) Wagenitz, C. spicata Boiss., Centaurea glastifolia L., Centaurea salonitana Vis., Centaurea balsamita Lam. and Centaurea behen L. species (Asteraceae) investigated by agar disc diffusion and MIC method.
  Ahmet KAHRAMAN , Safi BAGHERPOUR , Ersin KARABACAK , Musa DOGAN , Hakan Mete DOGAN , Ismet UYSAL and Ferhat CELEP
  The current conservation status of the Salvia L. (sage) taxa of the family Lamiaceae distributed in the East, South-East, Central, North Anatolian, and Marmara geographic regions of Turkey was reassessed at regional, national, and global levels using IUCN Red List categories and criteria. In accordance with the present taxonomic revision of the genus since 2005, the study area seems to cover 79 taxa, 36 of which are endemic and 4 of which are rare nonendemic; the remaining 39 taxa are widely distributed. The rate of endemism is 46% in the area. Based on new field observations of populations and distribution data, taxa were classified into the following threat categories at the global scale: Critically Endangered (CR) (5 taxa), Endangered (EN) (8 taxa), Vulnerable (VU) (11 taxa), Near Threatened (NT) (12 taxa), and Least Concern (LC) (43 taxa). The most threatened species at the global scale are S. anatolica, S. ballsiana, S. freyniana, S. odontochlamys, and S. pseudeuphratica. The threatened taxa are under pressure from intensive human activities such as overgrazing, construction (e.g., road construction), land clearing (e.g., agricultural activities), and urbanisation. The threatened endemic taxa are concentrated in 3 main areas. The first area includes Sivas, Divrigi, Gurun, Pınarbası, and Kemaliye. The second area includes Ankara, Beypazarı, Polatlı, and Sivrihisar. The third area includes Yozgat, Akdagmadeni, Nevsehir, and Kayseri. Some significant measures are recommended here for the conservation and management of the high number of endemic taxa under threat in the research area.
 
 
 
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