نتایج جستجو برای: ecological niche factor analysis

تعداد نتایج: 3564586  

زمانی, نوید, زمانی, وحید, قندالی, مجتبی, موسوی, جلال, کرمی, شاهو,

Evaluation of habitat sustainability indexes is essential in wildlife management and conservation of rare species. Suitable habitats are required in wildlife managements and conservation also, they increase reproduction and survival rate of species. In this study in order to mapping habitat sustainability and recognizing habitat requirements of Iranian Cheetah (Acinonyx jubatus venaticus), fiel...

Journal: :محیط زیست طبیعی 0
پیمان کرمی دانش آموخته کارشناسی ارشد ارزیابی و آمایش سرزمین، دانشکده کشاورزی و منابع طبیعی، دانشگاه هرمزگان یحیی اسماعیل پور استادیار گروه مرتع و آبخیزداری، دانشکده کشاورزی و منابع طبیعی، دانشگاه هرمزگان صابر قاسمی استادیار گروه محیط زیست، دانشکده منابع طبیعی، دانشگاه آزاد اسلامی واحد بندرعباس مظفر شریفی استاد، گروه زیست شناسی، دانشکده علوم، دانشگاه رازی

gharaviz no hunting area is known as one of the most important habitats of persian gazelle (gazella subgutturosa subgutturosa) in west zagros mountains. developing models to predict the distribution of wildlife is suitable tool for conservation and management. in this approach, the boundary of the study area was considered the distribution area and then were compared with actual region. field d...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده کشاورزی 1394

with the increasing population and the need for more food, as well as with the development of science and technology, human approach to unnatural and often chemical inputs to increase agricultural production has been a great expansion and problems such as increased cancers, chronic diseases has created environmental pollution. implementation of organic organic is a solution to these problems . ...

Looming establishment of competitive environment on the globe imposes serious competitive challenges on domestic industries in a way that it affects their business trends or even their survival. Seemingly, starting and choosing niche markets can be effective solution to retain and grow the market share, and consequently gain success in competitive environments. Meanwhile, due to high compe...

Journal: :مرتع و آبخیزداری 0
لیلا خلاصی اهوازی دانش آموختة کارشناسی ارشد مرتع داری، دانشکدة منابع طبیعی، دانشگاه تهران محمدعلی زارع چاهوکی دانشیار دانشکدة منابع طبیعی، دانشگاه تهران

zygophyllum atriplicoides is one of the most important rangeland plants that often seen as associated species and rarely seen as the dominant species in ranglands rangelands which is very critical for soil  in starting and ending points of each transect. measured soil properties (included gravel, texture, organic matter, lime, ph and electrical conductivity) and physiography (elevation and slop...

Journal: :محیط زیست طبیعی 0
مجتبی قندلی اداره کل حفاظت محیط زیست استان سمنان افشین علیزاده استادیار دانشکده منابع طبیعی، دانشگاه تهران، ایران محمود کرمی - استاد دانشکده منابع طبیعی، دانشگاه تهران، ایران محمد کابلی استادیار دانشکده منابع طبیعی، دانشگاه تهران، ایران

kavir national park is an example of dry and desert ecosystem that is consisted of vast plains and numerous highlands. wild sheep is one of the iconic bovid in this area. understanding their habitat requirements and similarities is essential for their successful population management. we used ecological niche factor analysis approach to develop habitat suitability models for wild sheep in kavir...

Journal: :محیط زیست طبیعی 0
آزیتا فراشی دانشجوی دکتری مهندسی منابع طبیعی - محیط زیست، دانشکده منابع طبیعی، دانشگاه تهران، ایران محمد کابلی استادیار گروه محیط زیست، دانشکده منابع طبیعی، دانشگاه تهران، ایران محمود کرمی استاد گروه محیط زیست، دانشکده منابع طبیعی، دانشگاه تهران، ایران

raccoon is a native species to north and central america. at present, it is an invasive species in many countries such as japan, germany, russia and iran. raccoon was observed for the first time in gilan province in iran in 1991. this research was employed ecological niche factor analysis (enfa) method to model habitat selection of raccoon in lavandevil wildlife refuge. the results showed that ...

2015
Meirong Wang Fei Liu Pengcheng Lin Shaorong Yang Huanzhang Liu

In the past decades, it has been debated whether ecological niche should be conserved among closely related species (phylogenetic niche conservatism, PNC) or largely divergent (traditional ecological niche theory and ecological speciation) and whether niche specialist and generalist might remain in equilibrium or niche generalist could not appear. In this study, we employed morphological traits...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید