نتایج جستجو برای: taylor grazing act

تعداد نتایج: 214371  

2010
Lisette Lenoir Tommy Lennartsson

Arthropod communities were investigated in two Swedish semi-natural grasslands, each subject to two types of grazing regime: conventional grazing from May to September (continuous grazing) and traditional late management from mid-July (late grazing). Pitfall traps were used to investigate abundance of carabids, spiders, and ants over the grazing season. Ant abundance was also measured by mappin...

Journal: :Intermountain journal of sciences : IJS 2011
Abigail J Leary Amy J Kuenzi Richard J Douglass

We examined the effects of grazing on deer mouse (Peromyscus maniculatus) movements into buildings using passive integrated transponder (PIT) technology and small simulated buildings located on 0.6-ha treatment (grazing) and control (no grazing) plots. Twelve experimental 9-day trials were conducted over the course of the study. During these trials, mouse movements into buildings were monitored...

Journal: :مرتع و آبخیزداری 0
احمد صادقی پور استادیار دانشکدة کویرشناسی، دانشگاه سمنان نادیا کمالی دانشجوی دکتری مرتع داری، دانشگاه تهران پریا کمالی دانشجوی دکتری مرتع داری، دانشگاه علوم کشاورزی و منابع طبیعی گرگان حامد جنیدی دانشجوی دکتری مرتع داری، دانشگاه علوم کشاورزی و منابع طبیعی گرگان

this study investigates monthly and seasonal variations of carbon emission from the soil at different grazing intensities. three areas of exclosure, low and high grazing intensities were selected in ghoosheh region of semnan province. carbon emission was measured monthly, in each treatment applying alkali traps (csc) during a year. emission and grazing data were analyzed, using a factorial expe...

Journal: :Journal of Fluid Mechanics 2023

Axisymmetric steady solutions of Taylor–Couette flow at high Taylor numbers are studied numerically and theoretically. As the axial period solution shortens from approximately one gap length, Nusselt number goes through two peaks before returning to laminar flow. In this process, asymptotic nature changes in four stages, as revealed by analysis. When aspect ratio roll cell is unity, has proport...

Journal: :Interface focus 2016
Gordon Sanson

Insects and mammals cut their food up into small pieces to facilitate ingestion and chemical digestion. Teeth and jaws act as cutting tools, but, unlike engineering tools designed for a specific purpose, must generally cope with substantial variation in food properties and work at many scales. Knowing how teeth and jaws work effectively requires an understanding of the cutting on the edges and ...

Journal: :مجله مرتعداری 0

the effects of different grazing intensities on the above and underground biomass of twospecies festucaovina l. and alopecurustextilisboiss. in the north sabalan rangelands (in shabil) were investigated. sampling on the light, medium and heavy grazing intensities in the flowering stage (the second half of june 2013) were performed. initially, from a 90-meter transects perpendicular to the slope...

2013
Liang Yan Guangsheng Zhou Feng Zhang

BACKGROUND Grazing is one of the main grassland disturbances in China, and it is essential to quantitatively evaluate the effects of different grazing intensities on grassland production for grassland carbon budget and sustainable use. METHODS A meta-analysis was conducted to reveal general response patterns of grassland production to grazing in China. We used weighted log response ratio to a...

2017
John E. Gilley B. D. Patton P. E. Nyren J. R. Simanton J. E. Gilley

Grazing and haying effects on runoff and erosion from a former Conservation Reserve Program (CRP) site near Streeter, North Dakota, were determined. Treatments included undisturbed CRP, twice-over rotational grazing, season-long grazing, haying, and burning. Runoff and erosion were measured from simulated rainfall which was applied to 3.7 x 10.7 m (12.0 X 35.1 ft) plots. Following an initial st...

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...

2016
Jordan R. Johnson Walter H. Schacht Jerry D. Volesky

Ultrahigh stocking density (113,000 kg of beef per ha to as high as 1 million kg per ha) or mob grazing has been suggested to build soil, increase forage production and plant diversity, and improve grazing distribution compared to less intensive grazing systems. Experimental evidence does not completely support such conclusions. The overall focus of this research is based on the approach of bui...

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