نتایج جستجو برای: term exclosure

تعداد نتایج: 581600  

2013
Kathleen R. Aikens Laura L. Timms Christopher M. Buddle

The forest canopy offers a vertical gradient across which variation in predation pressure implies variation in refuge quality for arthropods. Direct and indirect experimental approaches were combined to assess whether canopy strata differ in ability to offer refuge to various arthropod groups. Vertical heterogeneity in impact of avian predators was quantified using exclosure cages in the unders...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه - دانشکده علوم 1391

nanotechnology is a general term which is related with field of all advanced science term that generally predicates with all modern technologies which consider nanoscales. improvement in the quality of products by adding some nanoparticles and study of their behavior in the presence of these nanoparticles have been obtained in many researches. on the other hand numerous demands for sowing ...

Journal: :Frontiers in Ecology and Evolution 2022

Over a quarter of the world’s land surface is grazed by cattle and other livestock, which are replacing wild herbivores widely regarded as drivers global biodiversity declines. The effects livestock presence versus absence on well documented. However, environmental context-specific stocking rate production poorly understood, precluding nuanced rangeland management recommendations. To address th...

Journal: :Journal of Applied Ecology 2021

Cattle and other livestock graze more than a quarter of the world's terrestrial area are widely regarded to be drivers global biodiversity declines. Studies often compare effects presence/absence but, our knowledge, no studies have tested for interactive between large wild herbivores at varying stocking rates on small-bodied vertebrates. We investigated cattle (none/moderate/high) diversity wil...

Journal: :بینا 0
حسن رزمجو h razmjo اصفهان- بیمارستان فیض فرزان کیان ارثی f kian ersi اصفهان- بیمارستان فیض محمدرضا خادمی mr khademi محمد رضا اخلاقی mr akhlaghi

purpose: to compare the effects of short-tem and long-term systemic corticosteroids in the treatment of confirmed ocular toxoplasmosis. methods: this randomized comparative clinical trial was performed on 69 patients with confirmed active ocular toxoplasmosis with typical clinical manifestations. the subjects were randomly assigned to receive either 10 days (group a, 33 cases) or 4-6 weeks (gro...

2017
Don M. Jordan Milo E. Richmond DON M. JORDAN

We conducted experiments with behavioral conditioning of white-tailed deer (Odocoileus virginianus) using verb 3-wire, electrified fencing modified with either an attractant or a repellent in order to test the idea that an attractant or repellent coupled with an electric shock, would be a more effective deterrent than a random shock or no shock at all. Exclosures measuring 6 x 6 m with 3 wires ...

Journal: :American Journal of Environmental Protection 2021

Land degradation due to forest loss is the most challenging problem in sub-Saharan countries including Ethiopia. The coverage of country has been declined at an alarming rate. Currently, exclosure practice part community mass mobilization soil and water conservation program as a means reverse land problem. involvement either intervention methods (passive or active) could enhance plant regenerat...

ژورنال: مرتع 2020
Bayat, Mina , Eftekhari, Alireza, Kamali, Nadia, Nateghi, Saeedeh, Soori, Mahshid,

Grazing effect on vegetation cover and soil factors in natural environments is inevitable. The present study was conducted to investigate the effect of grazing on soil factors and distribution of plant species in grazed and non-grazed areas in rangelands of western parts of Hoz-e-Soltan Lake, Qom. Systematic-randomized sampling method was used alongside of 4 transects. Adjacent to the transects...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده فنی مهندسی 1385

acknowledge the importance of e-commerce to their countries and to survival of their businesses and in creating and encouraging an atmosphere for the wide adoption and success of e-commerce in the long term. the investment for implementing e-commerce in the public sector is one of the areas which is focused in government‘s action plan for cross-disciplinary it development and e-readiness in go...

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