نتایج جستجو برای: dry rangeland

تعداد نتایج: 95008  

2007
T. G. Bidwell Bob Woods

Oklahoma is blessed with an abundance of excellent forage resources. Many Oklahoma producers enjoy the benefits of operating livestock production systems on both rangeland and introduced-forage pastures. However, some producers may not be aware of the need for different management strategies for the two ecosystems. Improper management generally results in decreased profitability of the livestoc...

2012
Jayne Belnap John A. Ludwig Bradford P. Wilcox Julio L. Betancourt W. Richard J. Dean Benjamin D. Hoffmann Sue J. Milton

Globally, new combinations of introduced and native plant and animal species have changed rangelands into novel ecosystems. Whereas many rangeland stakeholders (people who use or have an interest in rangelands) view intentional species introductions to improve forage and control erosion as beneficial, others focus on unintended costs, such as increased fire risk, loss of rangeland biodiversity,...

2015
John N Wairore Stephen M Mureithi Oliver V Wasonga Gert Nyberg

The adoption and adaptation of enclosures in the arid and semi-arid rangelands of sub-Saharan Africa is driven and sustained by a combination of factors. However, reviews indicate that these factors cannot be generalized, as they tend to be case specific. A study was therefore conducted to explore the history and reasons for enclosure establishment in Chepareria, a formerly degraded communal ra...

Journal: :Diyala Agricultural Sciences Journal 2021

The preferred livelihood assets for meat and nutritious milk in thousands villages of Kurdistan rejoin/Iraq are sheep goats. They generally rely on free roaming rangeland during the growing seasons. In order to maintain their livestock scarcity forages at winter seasons, leaves twigs (Quercus aegilops, Q. infectoria libani) harvested dried as (dry leaf faggots) autumn season use major substitut...

2006
P. B. McMahon K. F. Dennehy B. W. Bruce J. K. Böhlke R. L. Michel J. J. Gurdak D. B. Hurlbut

[1] In 2000–2002, three rangeland and six irrigated sites were instrumented to assess the storage and transit time of chemicals in thick (15 to 50 m) unsaturated zones (UZ) in the High Plains. These processes are likely to influence relations between land use and groundwater quality, yet they have not been documented systematically in the High Plains. Land use and climate were important control...

2004
KENNETH W. TATE EDWARD R. ATWILL

Cryptosporidium parvum is a fecal borne protozoan parasite that can be carried by and cause gastrointestinal illness in humans, cattle, and wildlife. The illness, cryptosporidiosis, can be fatal to persons with compromised immune systems. At question is the potential for C. parvum in cattle fecal deposits on rangeland watersheds to contaminate surface water. First, C. parvum oocysts must be rel...

2003
K. P. Kirkman P. C. de Faccio Carvalho

Rangelands essentially comprise geographical regions dominated by grass with or without scattered woody plants. Rangelands are often considered to function primarily as feed for livestock. In this view, conservation and biodiversity issues are secondary. The alternate view involves recognising rangelands as a biome without a specific function, but where there is an implied responsibility for in...

2017
Robert A. Masters Roger Sheley ROBERT A. MASTERS ROGER L. SHELEY

Invasive plants reduce the capacity of ecosystems to provide goods and services required by society, alter ecological processes, and can displace desirable species. They can reduce wildlife habitat quality, riparian area integrity, rangeland economic value, and enterprise net returns. The invasion process is regulated by characteristics of the invading plant and the community being invaded. The...

2017
R. Dave Evans Richard A. Gill Valerie T. Eviner

Soil characteristics and functions are critical determinants of rangeland systems and the ecosystem services that they provide. Rangeland soils are extremely diverse, but an emerging understanding is that paradigms developed in more mesic forest ecosystems may not be applicable. Vascular plants, biological soil crusts, and the soil microbial community are the three major functional groups of or...

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