DISTRIBUTION PATTERNS OF THE GENUS COUSINIA (ASTERACEAE) IN IRAN

Document Type : Research Paper

Authors

1 Medicinal and Natural Products Chemistry Research Center, Shiraz University of Medical Sciences, Shiraz, Iran

2 Department of Biology, Faculty of Sciences, Shiraz University, Shiraz, Iran. 71454, Shiraz, Iran.

3 Department of Botany, Recearch Center for Plant Sciences, Ferdowsi University of Mashhad, Mashhad, Iran.

Abstract

The geographical distribution of the genus Cousinia in Iran has been analyzed using a dataset of 3095 georeferenced observations. The 241 species of the genus are distributed throughout Iran. However, about third of the observations are made from provinces like, Khorasan Razavi, Tehran, and Fars. The genus has 135 rare species and 197 endemic species. The maximum distance between two observations of the same species, (MaxD) is 1863 kilometers. Razavi Khorasan, Lorestan, Esfahan, North Khorasan and Tehran have the highest number of rare species. Species richness was mapped with the point-to-grid richness analysis tool DIVA-GIS, using a 10×10 kilometer grid cell and the circular neighborhood option with a 50 km radius. High species richness occurs in large area in North of Semnan province, Dena Mountains, Central Alborz, Lorestan province, NW Iran and also in Kopet Dagh Mountain in Khorasan where the hotspots for endemic species are located. Forty five 0.5o×0.5o grid cells are needed to capture all species at once, which have the most conservative importance for this group of plants.

Keywords

Article Title [Persian]

الگوی پراکندگی جنس کوزینیا در ایران

Authors [Persian]

  • مهدی زارع 1
  • احمدرضا خسروی 2
  • محمد رضا جوهرچی 3
1 فارغ التحصیل کارشناسی ارشد بخش زیست شناسی دانشگاه شیراز.
2 دانشیار بخش زیست شناسی دانشگاه شیراز.
3 عضو هیئت علمی گروه گیاهشناسی، پژوهشکده علوم گیاهی دانشگاه فردوسی مشهد.
Abstract [Persian]

پراکنش جغرافیایی جنس کوزینیا در ایران با استفاده از 3095 گزارش ثبت شده در منابع و یا بر اساس نمونه‌های هرباریومی واکاوی گردید. 241 گونه این جنس در تمام کشور گسترده اند، هرچند که حدود یک سوم از گزارش‌ها از استان‌های خراسان رضوی، تهران و فارس می‌باشد. این جنس 135 گونه نادر و 197 گونه انحصاری دارد. بیشترین مقدار برای شاخص حداکثر فاصله میان دو فرد از یک گونه (MaxD) 1863 کیلومتر می‌باشد. استان‌های خراسان رضوی، لرستان، اصفهان، خراسان شمالی و تهران بالاترین تعداد گونه‌های نادر را دارند. به کمک برنامه DIVA-GIS و با استفاده از خانه‌های ١۰×١۰ کیلومتر و محدوده دایره‌ای همسایه با شعاع ٥۰ کیلومتر غنای گونه‌ای ترسیم شد.غنای گونه‌ای بالا در زاگرس مرکزی (اساسأ استان های لرستان، مرکزی و همدان)، البرز مرکزی، شمال غرب ایران و همچنین کوه‌های کپه داغ در خراسان که نقطه داغ گونه‌های انحصاری نیز می‌باشد، مشاهده شد. چهل و پنج خانه 5/0×5/0 درجه لازم است تا تمام گونه‌های این جنس را در بر بگیرد. این خانه‌ها از لحاظ حفاظتی اهمیت بالایی دارند.

Keywords [Persian]

  • Cousinia
  • Iran
  • geographical distribution
  • Species richness
  • grid cell

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The Iranian Journal of Botany
Volume 19, Issue 1 - Serial Number 1
August 2013
Pages 137-141

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  • Receive Date: 03 September 2013
  • Accept Date: 03 September 2013

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