نتایج جستجو برای: grazing management

تعداد نتایج: 864634  

2003
C. A. TAYLOR

Prescribed fires are used to manipulate and manage rangelands, but effective monitoring techniques are needed to ensure that management goals and objectives are being met. The application of an effective fire program on rangelands is not a simple task. Overgrazing by livestock since the early development of the livestock industry has altered the vegetative complex on most rangelands with an inc...

Journal: :مرتع و آبخیزداری 0
محمد فیاض عضو هیئت علمی مؤسسة تحقیقات جنگل‏ها و مراتع تهران حسین پیری صحراگرد دانشجوی دکتری مرتع داری دانشگاه تهران حسن یگانه دانشجوی دکتری مرتع داری دانشگاه تهران انور سور دانشجوی دکتری مرتع داری دانشگاه تهران میر طاهر قائمی عضو هیئت علمی مرکز تحقیقات کشاورزی و منابع طبیعی استان آذربایجان غربی

having a comprehensive and correct understanding of grazing behaviour of livestock helps to maximize livestock products. moreover, a good understanding of livestock behavior allows us to predict the effects of livestock on rangeland and finally we can do livestock grazing management the best possible. recognition of grazing behavior of animals can provide solutions enables the optimal use of ra...

ژورنال: علوم آب و خاک 2019

Evaluating the possible relationships between vegetation and environmental characteristics can assist managers to identify effective factors influencing plants establishment and to characterize various vegetation communities. This study was aimed to evaluate the effects of long term grazing exclusion ( more than 33 years) and the controlled grazing system (resting – rotation grazing system) on ...

Journal: :مرتع و آبخیزداری 0
نیما شاکری بروجنی دانش آموخته کارشناسی ارشد مرتع داری، دانشگاه صنعتی اصفهان، ایران حسین بشری استادیار، دانشکده منابع طبیعی، دانشگاه صنعتی اصفهان، ایران مصطفی ترکش اصفهانی استادیار، دانشکده منابع طبیعی، دانشگاه صنعتی اصفهان، ایران

this study sought to develop a decision support system (dss) for assisting range managers to detect range condition and make informed decisions about feridan county rangelands. all plant species frequencies were measured in 31 range sites with various grazing histories using step point method. four hundred points along four perpendiculars 30 meters transects were measured in each site and grazi...

2007
D. D. Briske J. D. Derner J. R. Brown S. D. Fuhlendorf W. R. Teague K. M. Havstad R. L. Gillen A. J. Ash W. D. Willms

In spite of overwhelming experimental evidence to the contrary, rotational grazing continues to be promoted and implemented as the only viable grazing strategy. The goals of this synthesis are to 1) reevaluate the complexity, underlying assumptions, and ecological processes of grazed ecosystems, 2) summarize plant and animal production responses to rotational and continuous grazing, 3) characte...

Journal: :مرتع و آبخیزداری 0
محمد فیاض عضو هیات علمی موسسه تحقیقات جنگل‏ها و مراتع کشور، ایران

more than half of the area of the country are rangelands. implementing the principles of proper rangeland management and optimal use of rangeland requires proper stock grazing management. considering the quality and quantity of forage plants, palatability and preference value of species and rates of species utilization are information needed for proper management of livestock grazing in rangela...

2014
Kari E. Veblen David A. Pyke Cameron L. Aldridge Michael L. Casazza Timothy J. Assal Melissa A. Farinha

Public land management agencies, such as the Bureau of Land Management (BLM), are charged with managing rangelands throughout the western United States for multiple uses, such as livestock grazing and conservation of sensitive species and their habitats. Monitoring of condition and trends of these rangelands, particularly with respect to effects of livestock grazing, provides critical informati...

2006
Jörgen Wissman Tommy Lennartsson Hanna–Märtha Jansson

Early and intense grazing of semi-natural grasslands replacing traditional mowing and late grazing has been identified as a threat to grassland biodiversity. We compared fruit production, fruit set attributes (e.g. plant size or phenology of reproduction), and differences in potentially negative effects (accumulation of ungrazed vegetation) in continuous grazing from May through September, with...

2017
Kristin M. Oles Dave A. Weixelman David F. Lile Kenneth W. Tate Laura K. Snell Leslie M. Roche

Riparian meadows occupy a small proportion of the public lands in the western United States but they provide numerous ecosystem services, including the production of high-quality forage for livestock grazing. Modern conservation management strategies (e.g., reductions in livestock stocking rates and adoption of new riparian grazing standards) have been implemented to better balance riparian con...

Journal: :Environmental management 2014
Tony Svejcar Chad Boyd Kirk Davies Matthew Madsen Jon Bates Roger Sheley Clayton Marlow David Bohnert Mike Borman Ricardo Mata-Gonzàlez John Buckhouse Tamzen Stringham Barry Perryman Sherman Swanson Kenneth Tate Mel George George Ruyle Bruce Roundy Chris Call Kevin Jensen Karen Launchbaugh Amanda Gearhart Lance Vermeire John Tanaka Justin Derner Gary Frasier Kris Havstad

In a previous article, Beschta et al. (Environ Manag 51(2):474-491, 2013) argue that grazing by large ungulates (both native and domestic) should be eliminated or greatly reduced on western public lands to reduce potential climate change impacts. The authors did not present a balanced synthesis of the scientific literature, and their publication is more of an opinion article. Their conclusions ...

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