نتایج جستجو برای: grazing capacity

تعداد نتایج: 292412  

1999
R. P. Thompson A. Avery

The objective of this study was to determine whether seasonal deferred grazing regimes could be used to increase the composition of cocksfoot (Dactylis glomerata L) in perennial pastures growing in temperate Australia. The experiment was conducted over three years at two sites; one in Victoria and the other in Tasmania, Australia. Relative to the control of continuous grazing, deferred grazing ...

Journal: :Ad Hoc Networks 2009
Matthew David Coles Djamel Azzi Barry P. Haynes Alan Hewitt

Mobility strategies for wireless sensor networks (WSNs) are presented. We introduce a grazing mobility strategy for mobile WSNs, inspired by the foraging behaviour of herbivores grazing pastures. We present Bayesian network GRAZing (BNGRAZ) that implements the proposed WSN grazing strategy. BNGRAZ uses local neighbourhood information to predict coverage and connectivity performance changes rela...

2017
Prem K. Raghupathi Wenzheng Liu Koen Sabbe Kurt Houf Mette Burmølle Søren J. Sørensen

Biofilm formation has been shown to confer protection against grazing, but little information is available on the effect of grazing on biofilm formation and protection in multispecies consortia. With most biofilms in nature being composed of multiple bacterial species, the interactions and dynamics of a multispecies bacterial biofilm subject to grazing by a pelagic protozoan predator were inves...

2013
Anke S. K. Frank Chris R. Dickman Glenda M. Wardle Aaron C. Greenville

Arid grasslands are used worldwide for grazing by domestic livestock, generating debate about how this pastoral enterprise may influence native desert biota. One approach to resolving this question is to experimentally reduce livestock numbers and measure the effects. However, a key challenge in doing this is that historical grazing impacts are likely to be cumulative and may therefore confound...

2006
James S. Jacobs Roger L. Sheley John J. Borkowski

Leafy spurge is an invasive Eurasian weed on pastures and rangeland in North America where it reduces grass forage production. Our objective was to determine the effects of multispecies grazing combined with Aphthona flea beetles on leafy spurge-infested rangeland. On two westernNorth Dakota sitesdivided into four25to79-hapastures, two grazingduration treatmentswere applied: season-long with 7 ...

2014
Christina L. Marley Rhun Fychan John W. Davies Nigel D. Scollan R. Ian Richardson Vince J. Theobald Elizabeth Genever Andy B. Forbes Ruth Sanderson

An experiment investigated whether the inclusion of chicory (Cichorium intybus) in swards grazed by beef steers altered their performance, carcass characteristics or parasitism when compared to steers grazing perennial ryegrass (Lolium perenne). Triplicate 2-ha plots were established with a chicory/ryegrass mix or ryegrass control. Forty-eight Belgian Blue-cross steers were used in the first gr...

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...

2018
Zhiying Liu Taogetao Baoyin Junjie Duan Guofeng Yang Juan Sun Xiliang Li

Identifying the linkages between nutrient properties and plant size is important for reducing uncertainty in understanding the mechanisms of plant phenotypic plasticity. Although the positive effects of grazing exclusion on plant morphological plasticity has been well documented, surprisingly little is known about the relationship of nutrient strategies with plant shoot size after long-term gra...

Journal: :Applied and environmental microbiology 1998
C A Ochs L P Eddy

In the open ocean, where turbidity is very low, UV radiation may be an important factor regulating interactions among planktonic microorganisms. The effect of exposure to UV radiation on grazing by a commonly isolated marine heterotrophic nanoflagellate, Paraphysomonas bandaiensis, on two strains of the cyanobacteria Synechococcus spp. was investigated. Laboratory cultures were exposed to a ran...

2002
Yoana C. Newman Lynn E. Sollenberger Carrol C. Chambliss William E. Kunkle

Grazing height of limpograss pastures is thought to be important in determining pasture performance and cattle weight gains, but this has not been tested under continuous grazing. The objectives of this study were to determine the effects of grazing limpograss pastures (continuous grazing) to heights of 8, 16, or 24 in during two summers and providing a non-protein nitrogen supplement to yearli...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید