نتایج جستجو برای: national park

تعداد نتایج: 414755  

Journal: :محیط زیست طبیعی 0
آمنه نیکبختی کارشناس ارشد محیط زیست دانشگاه علوم کشاورزی و منابع طبیعی گرگان سید حامد میرکریمی استادیار محیط زیست دانشگاه علوم کشاورزی و منابع طبیعی گرگان مژگان میرزایی کارشناس ارشد محیط زیست دانشگاه علوم کشاورزی و منابع طبیعی گرگان

this is a year field study to evaluate the recreational needs of visitors bamu national park. bamu national park has the potential ecotourism capabilities to attract ecotourist which should be utilizing of this ability in regional planning. in this study clawson method used that one of the most common methods of evaluation systems resorts in aware of the people comments. about 225 questionnaire...

2013
Robert W. Turner

Contingent choice surveys, in which respondents rate or rank alternative scenarios describing potential futures composed of varying levels of several different attributes, can help national park managers by identifying the preferences of visitors and also the nonuse values generated by park attributes. Many alternative combinations of park attributes can be explored efficiently, helping park ma...

Long-term survival of Goitered gazelles in central Iran has been threatened because of isolation of existing populations and genetic threats. Effective management of these small and isolated populations needs to evaluate landscape connectivity among core habitat patches. In the present study, resistance surfaces were mapped as a function of twelve uncorrelated variables using species distributi...

The study was conducted with the objective of mapping landscape cover of Nechsar National park in Ethiopia to produce spatially accurate and timely information on land use and changing pattern. Monitoring provides the planners and decision-makers with required information about the current state of its development and the nature of changes that have occurred. Remote sensing and Geographical Inf...

Journal: :محیط شناسی 0
عباس عاشوری شعبانعلی نظامی کامران زلفی نژاد

birds constitute the important elements of most ecosystems of the world. the objective of this study was to survey and identify birds of boujagh national park. for this reason the park divided into 7 parts and during 24 months, between autumn 1383 and late summer of 1385, the park has been surveyed. the results show that 234 species have been identified (about %46.4 of all bird species througho...

Journal: :ASM news 1998
D M Ward

Yellowstone National Park plays host to numerous microbiological research projects — officially 23, according to the 1996 Investigators' Annual Reports. However, once categories such as aquatic ecology, the study of brucellosis and other wildlife diseases, environmental education, geochemistry and geothermal systems, and vegetation are included, the total came to at least 35 in 1996. Research p...

2006
Anna-Louise Reysenbach Stefan Lalonde Cristina Takacs-Vesbach

Aquificales are metabolically versatile chemolithoautotrophic thermophilic bacteria. This group is widespread in both deep-sea and terrestrial hydrothermal systems. In Yellowstone National Park, they were first described in early descriptions of the biology of the park, and later captured the attention of many microbiologists including Brock, Stahl, Pace, and others. There are four genera curre...

Journal: :Bulletin of Taras Shevchenko National University of Kyiv. Geography 2018

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