نتایج جستجو برای: site characteristics of black bears in rocky mountain national park

تعداد نتایج: 24492147  

پایان نامه :0 1371

in order to examine the ecological conditions and characteristics of fraxinus excelsior l. in the northern forests of iran 6 main areas as well as some miscellaneous ones , have been selected in the region respectively in : lomir2, shafaroud , park - e-noor , ahlam , alandan and noor.

2013
Roger A. Baldwin Louis C. Bender

Historically, Rocky Mountain National Park (RMNP) has supported a small black bear (Ursus americanus) population of low productivity. Increased visitor use of the park and development around its periphery could lead to a reduction in population viability of RMNP’s bear population or could increase the potential for human–bear conflict. Therefore, we investigated contemporary survival and produc...

Journal: :Ecological applications : a publication of the Ecological Society of America 2009
L Nanus M W Williams D H Campbell K A Tonnessen T Blett D W Clow

The sensitivity of high-elevation lakes to acidic deposition was evaluated in five national parks of the Rocky Mountains based on statistical relations between lake acid-neutralizing capacity concentrations and basin characteristics. Acid-neutralizing capacity (ANC) of 151 lakes sampled during synoptic surveys and basin-characteristic information derived from geographic information system (GIS)...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده منابع طبیعی و علوم دریایی 1388

this research was conducted in two protect and destroy region in the middle zagros, in illam province. in order to identification of ecological species group and evaluate density of regeneration, effect of many factors such as protection, vegetation, physiographic factors, physical and chemical properties of soil in study locations were studied. to achieve these purpose number of 54 plots using...

Journal: :Journal of vector ecology : journal of the Society for Vector Ecology 2008
Lars Eisen Luis A Ibarra-Juarez Rebecca J Eisen Joseph Piesman

The human-biting adult stage of the Rocky Mountain wood tick (Dermacentor andersoni) can cause tick paralysis in humans and domestic animals and is the primary tick vector in the intermountain west of the pathogens causing Colorado tick fever, Rocky Mountain spotted fever, and tularemia. We conducted drag sampling studies in Poudre Canyon and Rocky Mountain National Park of Larimer County, CO, ...

Journal: :Bulletin of the Torrey Botanical Club 1953

Journal: :محیط زیست طبیعی 0
محسن احمدی کارشناس ارشد، گروه محیط زیست، دانشکدۀ منابع طبیعی، دانشگاه تهران محمد کابلی دانشیار، گروه محیط زیست، دانشکدۀ منابع طبیعی، دانشگاه تهران افشین علیزاده شعبانی استادیار گروه محیط زیست، دانشکدۀ منابع طبیعی، دانشگاه تهران سهراب اشرفی استادیار گروه محیط زیست، دانشکدۀ منابع طبیعی، دانشگاه تهران

-   ahmadi, m., kaboli, m., imani harsini, j., khosravi sharifabadi, r., almasi, m., 2012. strategic management plan for wolf (canis lupus) in hamedan province: an approach to reducing human-wolf conflicts. journal of natural environment, iranian journal of natural resources. 65, 271–281. -   ballard, w.b., dau, j.r., 1983. characteristics of gray wolf, canis lupus, den and rendezvous sites in ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز 1381

‏‎the community dynamics of aquatic coleoptera(insecta)in one of the spring-stream habitats of bammo national park in fars province called cheshmeh-ye-ghanbari is studied as a pilot project and model for acquaintance with and furthering the biodiversity studies on fauna of iran. sixteen species-populations out of nineteen of this community were already identified for their taxonomy and for thei...

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