نوع مقاله : علمی - پژوهشی

نویسندگان

1 داﻧﺸﮕﺎه ﻳﺰد

2 دانشگاه گرگان

چکیده

زیستگاه به عنوان یکی از مهمترین فاکتورها در حفاظت از گونه ها مطرح است. تعیین وضعیت پراکنش گونه های حیات وحش و انتخاب زیستگاه های تحت اشغال آنها از اهمیت به سزایی در مدیریت حیات وحش و زیستگاه ها برخوردار می باشد. بنابراین هدف از این مطالعه بررسی انتخاب زیستگاه آهوی ایرانی واقع در منطقه حفاظت شده کالمند می باشد. نمونه برداری از هر تیپ زیستگاهی در دو فصل تابستان و پاییز با استفاده از ترانسکت های دائمی تصادفی به طول 200 متر و عرض 2 متر و با دو تکرار طی پنج بازدید انجام گرفت. در امتداد ترانسکت ها هر جا به گروه سرگین برخورد می شد، یک پلات به ابعاد 10 در 10 متر به مرکزیت توده سرگین مستقر و متغیرهای زیستگاهی مورد نظر اندازه گیری و برای پایش  دوباره، سرگین ها پاک شدند. هر 45 روز یک بار ترانسکتها مورد بررسی قرار گرفت. نتایج نشان داد که بین سه جامعه گیاهی از لحاظ تراکم گروه سرگین تفاوت معنی­داری وجود دارد. بیشترین و کمترین استفاده آهو به ترتیب از جامعه درمنه-کاهوی وحشی و درمنه بود، اما بین جامعه درمنه و درمنه-علف شور از لحاظ استفاده از زیستگاه اختلاف معنی داری وجود نداشت. جامعه درمنه-کاهوی وحشی کمترین فاصله را تا نزدیکترین پاسگاه و جامعه درمنه-شور کمترین فاصله را تا نزدیکترین منابع آبی و جاده داشت. همچنین جامعه درمنه کمترین فاصله را تا نزدیکترین مزرعه دارا بود. از نظر تراکم گروه های سرگین در جوامع گیاهی بین دو فصل اختلاف معنی­داری وجود نداشت. به نظر می رسد جامعه درمنه-کاهوی وحشی، پناه (به خاطر حضور گونه گون به عنوان گونه همراه در این جامعه)، ایمنی (به خاطر نزدیکی به پاسگاه محیط بانی) و منابع آب و غذای بیشتر (به خاطر وجود گونه های درمنه وگون) را در مقایسه با دو جامعه دیگر برای آهوی ایرانی فراهم می کند.

کلیدواژه‌ها

عنوان مقاله [English]

Summer and Autumn Habitat Selection of Gazella subgutrrosa on the Basis of Plant Communities (Case study: Kalmand Plain in Yazd Province)

نویسندگان [English]

  • Ali Akbar Karimian 1
  • Samira Hossein Jafari 2

1 Yazd University

2 Gorgan University of Agricultural Sciences and Natural Resources

چکیده [English]

Habitat is one of the important factors in species protection. Determining the pattern of wildlife species distribution and their habitat selection is so important to manage wildlife and its habitat. So the purpose of this study is to investigate the habitat selection of Gazella subgutrrosa in Kalmand conserved area. Sampling was done using random steady transects with 200 meters long and 2 meters wide and with 2 replications during five field investigation. When dung groups were observed, a 10*10 plot was putted with the center of dung masses and environmental variables were measured. Then, dungs were removed for another monitoring. Transects were investigated every 45 days. The results showed that there is a significant difference among three plant communities in terms of dung groups' density. The most and the least deer utilization were related to Artemisia-lactuca and Artemisia communities, respectively, but there is no significant difference between Artemisia and Artemisia-Salsola communities in terms of habitat use. Artemisia-lactuca community had the least distance to the nearest post and Artemisia-Salsola community had the least distance to the nearest water resources and road. Artemisia community had also the least distance to the nearest farm. There is no significant difference between the two seasons in terms of dung groups' density in plant communities. It seems that Artemisia-lactuca community prepared refuge (because of Astragalus species as a participant in this community), safety (because of being near to the post), and more food and water resources (because of Artemisia and Astragalus species presence) for Gazella subgutrrosa compared to the other communities.

کلیدواژه‌ها [English]

  • Gazella subgutrrosa
  • Habitat selection
  • Plant communities
  • Kalmand conserved area

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