Distribution patterns of Convolvulaceae in Iran: priorities for conservation

Document Type : Research Paper

Authors

1 MSc Student, Department of Plant Sciences and Biotechnology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, GC, Tehran, Iran

2 Assistant Prof., Department of Plant Sciences and Biotechnology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, GC, Tehran, Iran

Abstract

Assessing priorities is the most important action in conservation programs. Rudimentary, mapping of diversity, and distribution patterns have been used to set priorities on diverse scales. The distribution patterns of plant taxa, largely reflect an actual ecological niche. Convolvulaceae s.str exhibits cosmopolitan dispersal of diverse life forms and includes 50–60 genera comprising 1600–1700 species including valuable ornamental, medicinal and food crops as well as weedy taxa. Little attention has been paid to the patterns and diversity centers of this family in scale of Iran and Asia. The present study, explains in as much detail as possible distribution patterns and the priorities for conservation of Convolvulaceae in the context of species and habitats in Iran. Threatened species of Iranian Convolvulaceae include 20.4% distributed in the Irano-Turanian phytochorion as a priority region for conservation planning. Moreover, this family represents the highest richness in the Alborz and central Zagros mountains of Iran. A meaningful proportion of priority taxa and habitats are located in protected areas of Iran. Regardless, some face several threatening factors (e.g. land use change, deforestation, and overgrazing) outside protected areas; therefore, emergent conservation actions (in situ and ex situ methods) appear necessary to protect these taxa.
 

Keywords


Article Title [Persian]

الگوی پراکنش تیره پیچک در ایران: الویت‌های حفاظتی

Authors [Persian]

  • صدف صیادی 1
  • احمدرضا محرابیان 2
1 دانشجوی کارشناسی ارشد دانشکده علوم و فناوری زیستی، دانشگاه شهید بهشتی، تهران، ایران
2 استادیار دانشکده علوم و فناوری زیستی، دانشگاه شهید بهشتی، صندوق پستی 1983969411، تهران، ایران
Abstract [Persian]

ارزیابی الویت‌ها مهم‌ترین اقدام در برنامه‌های حفاظتی محسوب می‌شود. تهیه نقشه تنوع و الگوهای انتشار به صورت متداولی در پایه‌ریزی الویت‌ها در مقیاس‌های متنوع به کار گرفته شده است. تیره پیچک در مفهوم محدود شده نمایانگر یک الگوی انتشار جهان‌وطن متشکل از اشکال متنوع زیستی و مشتمل بر 50-60 جنس از 1700-1600 گونه می‌باشند. تا کنون، مراکز تنوع و انتشار این تیره در مقیاس ایران و آسیا کمتر مورد توجه قرار گرفته است. این مطالعه بیانگر دقیق الگوهای انتشار و الویت‌های حفاظتی در قالب زیستگاهی و گونه‌ای در تیره مذکور در کشور می‌باشد. گونه‌های در معرض تهدید این تیره در ایران 4/20 درصد می‌باشد که غالبا در مناطق ایرانو-تورانی اکوسیستم البرز و زاگرس انتشار یافته‌اند. این در حالی است که بیش‌ترین تنوع تیره مورد نظر نیز در این مناطق استقرار یافته است. به علاوه، تعداد زیادی از آرایه‌ها در محدوده مناطق تحت حفاظت قرار می‌گیرند. علی‌رغم این، در خارج از مناطق حفاظت شده با چالش‌های متعددی چون تغییرات کاربری اراضی، پاک‌تراشی جنگل و چرای بی‌رویه در زیستگاه‌هایشان مواجه هستند. بنابراین، اقدامات حفاظتی سریع (مشتمل بر حفاظت داخل و خارج از زیستگاه) جهت حفاظت از آن‌ها بسیار ضروری به نظر می‌رسد.

Keywords [Persian]

  • جغرافیای گیاهی
  • غنای گونه‌ای
  • گونه‌های نادر
  • مدیریت حفاظتی
  • نقشه انتشار
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