نتایج جستجو برای: core area habitat

تعداد نتایج: 830349  

Ecological studies on road’s impact on wildlife have concentrated on vertebrates although less is known of their effects on invertebrates. The current study presents public road influences on species richness, abundance, and diversity of ground dwelling insects in Arusha National Park in Tanzania. Values from pitfall traps data were generally higher in core habitat than road verge. Nine species...

Journal: :caspian journal of environmental sciences 2013
j. sarhangzadeh a.r. yavari m.r. hemami h.r. jafari b. shams-esfandabad

wild goat (capra aegagrus) is one of the most prominent mountain mammals dispersed in many habitats in iran. however, few studies on the relationship between this species and its habitat have been conducted. this species is recognized as one of the main food source for highly endangered species such as cheetah and leopard. in this study which lasted from fall 2009 through summer 2011, seasonal ...

A.R. Yavari B. Shams-Esfandabad H.R. Jafari J. Sarhangzadeh M.R. Hemami

Wild goat (Capra aegagrus) is one of the most prominent mountain mammals dispersed in many habitats in Iran. However, few studies on the relationship between this species and its habitat have been conducted. This species is recognized as one of the main food source for highly endangered species such as cheetah and leopard. In this study which lasted from fall 2009 through summer 2011, seasona...

Journal: :Environmental management 2007
Stephanie A Snyder James R Miller Adam M Skibbe Robert G Haight

Habitat protection for grassland birds is an important component of open space land acquisition in suburban Chicago. We use optimization decision models to develop recommendations for land protection and analyze tradeoffs between alternative goals. One goal is to acquire (and restore if necessary) as much grassland habitat as possible for a given budget. Because a viable habitat for grassland b...

2017
Joseph A E Stewart David H Wright Katherine A Heckman

Contemporary climate change has been widely documented as the apparent cause of range contraction at the edge of many species distributions but documentation of climate change as a cause of extirpation and fragmentation of the interior of a species' core habitat has been lacking. Here, we report the extirpation of the American pika (Ochotona princeps), a temperature-sensitive small mammal, from...

Habitat suitability models for the focal species are used to address the concerns related to the limited availability of data for remote habitats by scrutinizing the relationship between the biodiversity distribution patterns and the natural-anthropogenic characteristics. The current study aimed at modeling habitat suitability for seven focal species including Asian black bear, Persian leopard,...

2016
Zhifeng Liu Chunyang He Jianguo Wu

Urbanization results in habitat loss and habitat fragmentation concurrently, both influencing biodiversity and ecological processes. To evaluate these impacts, it is important to understand the relationships between habitat loss and habitat fragmentation per se (HLHF) during urbanization. The objectives of this study were two-fold: 1) to quantify the different forms of the HLHF relationship dur...

Journal: :محیط زیست طبیعی 0
مونا اسماعیل پور دانشجوی کارشناسی ارشد محیط زیست، دانشکدۀ منابع طبیعی، دانشگاه تهران، کرج، ایران محمد کابلی گروه محیط زیست، دانشکدۀ منابع طبیعی، دانشگاه تهران، کرج، ایران محمود کرمی گروه محیط زیست، دانشکدۀ منابع طبیعی، دانشگاه تهران، کرج، ایران افشین علیزاده شعبانی گروه محیط زیست، دانشکدۀ منابع طبیعی، دانشگاه تهران، کرج، ایران آزیتا فراشی گروه محیط زیست، دانشکدۀ منابع طبیعی، دانشگاه فردوسی مشهد، مشهد، ایران

increasing patch edges in natural habitats, as a result of habitat fragmentation, are a major threat for wildlife populations, especially avifaunal communities. habitat edges provide different conditions compared to the core area which can directly or indirectly cause changes in species number, population and composition. this fact will demand a dissimilar management strategy. this study was co...

Journal: :محیط زیست طبیعی 0
سعیده ملکی نجف آبادی مربی دانشکده منابع طبیعی، دانشگاه زابل، ایران محمودرضا همامی استادیار دانشکده منابع طبیعی، دانشگاه صنعتی اصفهان، ایران وحید راهداری مربی پژوهشکده تالاب بین المللی هامون، دانشگاه زابل، ایران

ovis orientalis isphahanica has a restricted geographical range and is listed as vulnerable by iucn. however, there is not enough data on habitat associations of this taxon to be used as a base for conservation programmes. use of vegetation communities by isfahan mouflon in mouteh wildlife refuge was studied over a one-year period. habitat use was related to vegetation communities and habitat v...

2016
Christopher A. Jordan Cody J. Schank Gerald R. Urquhart Armando J. Dans

Central America is experiencing rapid forest loss and habitat degradation both inside and outside of protected areas. Despite increasing deforestation, the Caribbean region of Nicaragua plays an important role in the survival or extinction of large mammal populations in Central America given that it still retains core areas of habitat for large mammal species. The proposed interoceanic canal pr...

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