نتایج جستجو برای: wilderness region and wildlife

تعداد نتایج: 16892361  

2011
TOM HOLMAN MARNI GOLDENBERG DAVID KLENOSKY

Persons with disabilities are using the National Wilderness Preservation System, and they are receiving a range of benefits from such wilderness use. The means-end theoretical and analysis perspective was used to explore the outcomes and related meanings associated with participating in a wilderness experi­ ence program for people with disabilities as well as those without disabilities. Data we...

2000
Gundars Rudzitis Rebecca Johnson

There have been few economic studies of the impact of wilderness on nearby communities. The few studies that have been carried out find relatively modest economic impacts on the surrounding communities by people who come to recreate in federally wilderness areas. However, studies find that people are moving to areas near federally designated wilderness and other wildlands because of the environ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی 1389

the quest for power has formed much of the world history especially in 20th and 21st centuries. oil (energy) particularly after industrial revolution has been a tool for conquest and power and has been transformed to a geopolitical issue. from a geopolitical point of view this has been the case for the last two centuries in central asia and caucasus. central asia and caucasus has always been...

2017
Evan Hjerpe Tom Holmes Eric White

Wilderness attracts tourists and generates visitor spending in proximate communities as people enjoy Wilderness for outdoor recreation. Wilderness also attracts amenity migrants and out-ofregion investments into surrounding regional economies. To investigate the amount and types of employment and income generated by Wilderness visitation, we conducted an economic contribution analysis of aggreg...

Journal: :Natural Areas Journal 2021

Ecosystem services (ES) have been well studied in most biomes, but the Arctic tundra has received little attention, despite covering over 10% of terrestrial Earth. Using established ES methodologies, we calculated values (in 2016 USD) for United States National Wildlife Refuge, a region virtually undisturbed by humans, slated future oil and gas drilling. We estimated Refuge is worth about 1957 ...

Journal: :محیط شناسی 0
یوسف رفیعی دانشجوی کارشناسی ارشد برنامه?ریزی محیط زیست دانشکدة محیط زیست دانشگاه تهران بهرام ملک محمدی استادیار گروه برنامه?ریزی محیط زیست دانشکدة محیط زیست دانشگاه تهران علی اکبر آبکار استادیار دانشکدة ژئوماتیک و نقشه?برداری دانشگاه خواجه نصیرالدین طوسی احمدرضا یاوری دانشیار گروه برنامه?ریزی محیط زیست دانشکدة محیط زیست دانشگاه تهران مجید رمضانی مهریان دانشجوی کارشناسی ارشد برنامه?ریزی محیط زیست دانشکدة محیط زیست دانشگاه تهران حمید ظهرابی مدیر کل حفاظت محیط زیست استان سمنان

wetlands, national parks and wildlife refuges are the most important ecological capitals, so inform of their change has main role in quality of management of such area. having new information of their changes helps us to find causes of changes and plans and policies that needed. remote sensing data are one of the most important and best sources for changes monitoring especially in environment. ...

2018
Elke Schüttler Lorena Saavedra-Aracena Jaime E. Jiménez

Background Hundreds of millions of domestic carnivores worldwide have diverse positive affiliations with humans, but can provoke serious socio-ecological impacts when free-roaming. Unconfined dogs (Canis familiaris) and cats (Felis catus) interact with wildlife as predators, competitors, and disease-transmitters; their access to wildlife depends on husbandry, perceptions, attitudes, and behavio...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان 1390

seismic retrofit strategies have been developed in the past few decades following the introduction of new seismic provisions and the availability of advanced materials and methods. it can be observed that new approaches to deal with more lateral forces are more innovative and more energy absorbent. in line with this, there is a growing trend toward the use of steel shear walls as a system with ...

2003
ANDREA S. LALIBERTE

H reference conditions are often used as a baseline for comparison with current and future natural resource management regimes (Aronson et al. 1995). There may be much debate about which point in time, what area, and what spatial extent should be used as a reference condition (Wagner et al. 2000), but understanding the past is undeniably important to the proper management of present and future ...

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