نتایج جستجو برای: javaherdeh rangelands

تعداد نتایج: 2381  

Journal: :Journal of environmental management 2013
Richard Teague Fred Provenza Urs Kreuter Tim Steffens Matt Barnes

Maintaining or enhancing the productive capacity and resilience of rangeland ecosystems is critical for the continued support of people who depend on them for their livelihoods, especially in the face of climatic change. This is also necessary for the continued delivery of ecosystem services derived from rangelands for the broader benefit of societies around the world. Multi-paddock grazing man...

Journal: :Remote Sensing 2015
Abdoul Aziz Diouf Martin Brandt Aleixandre Verger Moussa El Jarroudi Bakary Djaby Rasmus Fensholt Jacques André Ndione Bernard Tychon

Timely monitoring of plant biomass is critical for the management of forage resources in Sahelian rangelands. The estimation of annual biomass production in the Sahel is based on a simple relationship between satellite annual Normalized Difference Vegetation Index (NDVI) and in situ biomass data. This study proposes a new methodology using multi-linear models between phenological metrics from t...

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...

Journal: :Animal : an international journal of animal bioscience 2010
M Jouven P Lapeyronie C-H Moulin F Bocquier

In the countries surrounding the Mediterranean basin, most of the semi-natural grazing lands are covered by rangelands. Rangelands can be defined as highly heterogeneous natural vegetation communities with high conservation value, growing in harsh environments (poor soils, unfavourable climatic conditions). In the recent socio-economic context, traditional livestock grazing practices that enabl...

2006
Steven I. Higgins Jochen Kantelhardt Simon Scheiter Jan Boerner

Article history: Received 14 November 2005 Received in revised form 24 April 2006 Accepted 26 May 2006 Available online 31 July 2006 Classic rangeland theory advocates stocking rangelands at relatively lowand constant levels. This theory has been labelled inappropriate for savanna rangelands, because savannas are strongly influenced by stochastic processes. Opportunistic strategies that force a...

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