5261

4931

كارشناسي ارشد

محيط زيست

اصفهان: دانشگاه صنعتي اصفهان، دانشكده منابع طبيعي

1388

يازده،66ص.:مصور،جدول،نمودار

ص.ع.به فارسي و انگليسي

محمدرضا همامي

منصوره ملكيان

19/3/89

سيما فاخران، حسين بشري

1396/10/02

كتابنامه

مهندسي منابع طبيعي

ID4931

به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي

Habitat Selection and Abundance Estimation of Persian wild ass Equus hemmionus onager in Qatruyieh National Park Moslem momeni Momeni36@gmail com April 6 Department of Natural Resources Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language FarsiM Reza Hemami mrhemami@cc iut ac ir AbstractHistorically Onager or persian wild ass Equus hemionus onager were widespread in arid and semi arid steppes ofthe central parts of Iran but today only two natural populations have remained Onager is endemic to Iran Thissubspecies is listed as Critically Endangered in the Red List of the International Union for the Conservation ofNature and Natural Resources IUCN Management and conservation of this threatened species is generally neededto get an accurate knowledge about its population size and habitat requirements We study population density andhabitat selection by Persian wild ass in Qatruiyeh National park Habitat selection was studied in autumn winter spring and summer using clearance transect standing crop pellet group counts and summer direct observation Linetransect distance sampling was used to estimate the abundance of onager in the park The results showed habitat usewas significantly more for Artemisia sieberi than Zygophillum Artemisia in summer annual average and standingcrop pellet group counts Minimal models resulting from multiple regressions retained a number of habitatvariables in each seasons The most sensible relationships were negative effects of Zygophyllum eurypterum andtrough distance Negligible nutrition of zygophyllum and its relatively high height can consider this negativerelationship Negative relationship to trough distance show importance of water resources for onager presence Results of summer direct observations showed group size of onagers was significantly more for Artemisia sieberihabitat Large group size in this habitat can be explained by openness high visibility and awareness of animal The estimated population density of onager in Artemisia sieberi habitat was significantly higher than theZygophillum Artemisia habitat but no significant difference was found between the three plains with regard to theonager density The mean density of onager in the National Park was 1 09 0 27 SE Keywords Habitat selection Equus hemionus onager Qatruieh National Park Standing crop Line transect Population density

محمدرضا همامي

منصوره ملكيان

سيما فاخران، حسين بشري