نتایج جستجو برای: khabr rangelands

تعداد نتایج: 2388  

Journal: :Journal of Range Management 1978

Journal: :Agriculture 2021

Reliable measures of biomass, species composition, nitrogen status, and nutritive value provide important indicators the status pastures rangelands, allowing managers to make informed decisions. Traditional methods sample collection necessitate significant investments in time labor. Proximal sensing technologies have potential collect more data with a smaller investment However, protocols for c...

Journal: :Journal of Range Management 1974

Journal: :Journal of Applied Ecology 2022

Rangelands of the United States provide ecosystem services that benefit society and rural economies. Native tree encroachment is often overlooked as a primary threat to rangelands due slow pace cover expansion positive public perception trees. Still, fragments these landscapes reduces herbaceous production, thereby threatening habitat quality for grassland wildlife economic sustainability anima...

Journal: :Turkish Journal of Veterinary & Animal Sciences 2021

The aim of this study is to determine the effect rangeland quality Ankara goats fed on some natural in mohair quality. research was carried out 3 different rangelands province. Crude protein, ether extract, Ca, Fe, N, energy contents and digestibility, vitro gas production, relative feed values good plants were highest compared other rangelands, but crude fiber, acid detergent neutral fiber low...

2005
Justin D. Derner Gerald E. Schuman Michael Jawson Steven R. Shafer Jack A. Morgan H. Wayne Polley G. Brett Hugo H. Rogers James Bunce Lewis Ziska Jeffrey W. White Alan J. Franzluebbers Jean D. Reeder Rodney T. Venterea Lowry A. Harper

Rangelands T he topic of global change is found almost daily in newspaper and magazine articles and on television. Global change refers to large-scale changes in the Earth’s biological, geological, hydrological, and atmospheric systems, whether of human or natural origin. The primary concern of global change has centered on the rapid increase in atmospheric concentrations of primary greenhouse ...

2008
Brandon T. Bestelmeyer

Nevada. The speakers, their affi liations, and topics are listed in the sidebar. Two important concepts emerged from the presentations and discussions. First, the ecological concepts and assumptions that underlie the development and implementation of ESDs are undergoing revision at a rapid pace. Most importantly, the assumption that reconstructing the ecological dynamics of a group of similar s...

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