نتایج جستجو برای: grazing unauthorized livestock

تعداد نتایج: 39687  

Journal: :Environmental management 2002
Garry J Scrimgeour Sharon Kendall

The effects of livestock grazing on selected riparian and stream attributes, water chemistry, and algal biomass were investigated over a two-year period using livestock enclosures and by completing stream surveys in the Cypress Hills grassland plateau, Alberta, Canada. Livestock enclosure experiments, partially replicated in three streams, comprised four treatments: (1) early season livestock g...

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...

2017
Seth J Dettenmaier Terry A Messmer Torre J Hovick David K Dahlgren

Livestock grazing affects over 60% of the world's agricultural lands and can influence rangeland ecosystem services and the quantity and quality of wildlife habitat, resulting in changes in biodiversity. Concomitantly, livestock grazing has the potential to be detrimental to some wildlife species while benefiting other rangeland organisms. Many imperiled grouse species require rangeland landsca...

Journal: :مرتع و آبخیزداری 0
جواد معتمدی استادیار گروه مرتع و آبخیزداری، دانشکده منابع طبیعی دانشگاه ارومیه، ایران حسن سلالی دانش آموخته کارشناسی ارشد مرتعداری دانشکده منابع طبیعی دانشگاه ارومیه، ایران

investigation of the grazing behavior of grazing animals on the rangeland is one of the basic necessities of grazing management in different climatic regions. the current study with the aim of exploring the grazing behavior of makuyi sheep breed was conducted in the mountainous rangelands of kelid daghi of jolfa as representative rangelands for makuyi sheep breed dispersion in east azerbayjan p...

Journal: :Preventive veterinary medicine 2009
L A Smith G Marion D L Swain P C L White M R Hutchings

In grazing systems, heterogeneous distributions of forage resources and faeces result in localised accumulations of nutrients and parasites (both macroparasites and microparasites), creating trade-offs between the costs of exposure to infestation or infection and the benefits of nutrient intake. Each contact between livestock and faeces in the environment is a potential parasite/pathogen transm...

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...

Spiny and aromatic species in rangelands can play important role in the conservation of plant species in rangelands; however, few studies  have been done on the role of these plants under different levels of livestock grazing. In this research, the facilitation effects of spiny (Astragalus chrysostachys Boiss) and aromatic (Artemisia kopetdaghensis (Poljakov) Y.R.Ling) shrubs were studied on sp...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2009
Joern Fischer Jenny Stott Andre Zerger Garth Warren Kate Sherren Robert I Forrester

Global food demand is growing rapidly. Livestock grazing can provide a valuable source of protein, but conventional grazing is often unsustainable. We studied an 800,000-ha section of a threatened ecoregion in southeastern Australia. Conventional management in the region involves continuous livestock grazing with few rest periods and regular fertilizer application. By using remotely sensed data...

Since the halophytes species have an important role in such ecosystem balance and they have been grazed by livestock as supplementary forage, the awareness of livestock's desire to grazing and their preference values of these species is of high priority. Regardless of the importance of halophyte species in the livestock feeding in Iran, there is less published research on the livestock grazing ...

Journal: :desert 2014
samira hossein jafari mohammad reza tatian reza tamartash ali akbar karimian

owing to the importance and necessity of identifying soil properties in arid rangeland management, and the variableeffects of different kinds of herbivores on soil, this study compares some of the physical and chemical properties ofsoil between two regions experiencing livestock and wildlife grazing in the desert rangelands of kalmand-bahadoranin yazd province. the key areas in two regions expe...

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