Rangeland Ecology & Management
Get reliable science
Toggle Search
Result Type
Collection
Keywords
Document Type
Displaying 151 - 200 of 248 results
- Library Collection RecordWe assessed whether prior foraging by wild herbivores affected foraging behaviour of cattle in Laikipia rangeland, Kenya, during February 2001, August 2001 and February 2002. The study compared…Publication Date 2009
- competition
- bite rate
- foraging behaviour
- livestock
- private land
- Step rate
- wildlife
- foraging ecology
- management
- Africa
- Library Collection RecordConcerns about biodiversity preservation through grazing have revived interest in feeding choices made by herbivores. In this article, we study the dynamics of behavioural intake response in…Publication Date 2005
- foraging behaviour
- Bite
- intake rate
- sheep
- Feeding choices
- rangelands
- biodiversity
- forage quality
- Africa
- Library Collection RecordIn communal areas of NE Zimbabwe, feed resources are collectively managed, with herds grazing on grasslands during the rainy season and mainly on crop residues during the dry season, which creates…Publication Date 2011
- Crop-livestock interactions
- Dynamic modelling
- cattle
- crop residues
- grasslands
- livestock
- foraging ecology
- soil organic carbon
- soil fertility
- management
- communal farming
- Zimbabwe
- Africa
- Library Collection RecordDespite the importance of livestock to poor people and the magnitude of the changes that are likely to befall livestock systems, the intersection of climate change and livestock in developing…Publication Date 2009
- development
- research
- Poverty
- impact
- livestock
- systems
- climate change
- household income studies
- pastoralism
- Economic Aspects
- Africa
- Library Collection RecordMultiple land-use designs are becoming increasingly necessary in semi-arid Africa as growing populations focus numerous production systems onto spatially limited arable lands. Engineering distinct…Publication Date 1993
- land use
- fodder production
- agriculture
- irrigation
- livestock
- carrying capacity
- pastoralism
- management
- Africa
- Library Collection RecordIn African semi-arid savannas livestock production frequently dominates human activity, but it has been claimed that wildlife ranching can be more profitable than extensive beef production.…Publication Date 1994
- livestock production
- overstocking
- stocking rates
- Economic Aspects
- livestock
- rangelands
- cattle
- animal production
- wildlife
- Africa
- Library Collection RecordNo abstract availablePublication Date 1992
- rangelands
- modelling
- decision support systems
- Africa
- Library Collection RecordUse of Landsat vegetation indices (combinations of spectral bands) to measure standing crop biomass production in rangelands is addressed. The theoretical basis for vegetation indices is briefly…Publication Date 1983
- remote sensing
- Landsat images
- rangelands
- drought
- vegetation dynamics
- Africa
- Library Collection RecordThe rangelands of the world are declining in productivity in spite of the introduction of programmes designed to modernise these traditional pastoral systems of livestock production. This paper…Publication Date 1982
- rangelands
- animal production
- plant production
- subsistence agriculture
- traditional knowledge
- Africa
- Library Collection RecordA general model of rotational grazing is constructed where in each of P consecutive time periods a mob of animals grazes one of m paddocks. The optimal grazing sequence is that which maximises their…Publication Date 1995
- grazing
- management
- livestock
- fodder production
- foraging ecology
- diet selection
- forage quality
- Africa
- Library Collection RecordA utilitarian simulation model of botanical composition of ruminant diets on rangelands is proposed. It emphasizes the use of forage resource diversity within the range ecosystem context. The forage…Publication Date 1993
- modelling
- Forage Quantity
- rangelands
- species richness
- biodiversity
- cattle
- forage quality
- livestock
- grazing
- ecology
- Africa
- Library Collection RecordOne of the major issues in agropastoral development is the relationship of livestock and crop production. Does the introduction of crop cultivation on to productive rangeland deprive livestock of a…Publication Date 1991
- plant production
- animal nutrition
- animal production
- rangeland condition
- rangelands
- drought
- management
- stocking rates
- livestock
- Africa
- Library Collection RecordThe SPUR (simulation of production and utilization of rangelands) model was evaluated for use on eastern hill land pastures. The model was calibrated using the first year of soil fertility, weather,…Publication Date 1990
- rangelands
- Soil Condition
- cattle
- modelling
- animal production
- plant production
- Africa
- Library Collection RecordThis paper discusses options for improvement of the Borana pastoralist system. Overall, the prospects for increasing offtake of livestock or milk, by improvements in marketing facilities alone are…Publication Date 1988
- pastoralism
- animal production
- management
- drought
- livestock
- Supplementary Feeding
- Africa
- Library Collection RecordRainfall and the length of the growing seasons are highly variable in the semiarid East African rangelands such as Borana. Dry years occur about one year in five and droughts one year in twenty.…Publication Date 1988
- pastoralism
- animal production
- management
- drought
- livestock
- Supplementary Feeding
- cattle
- livestock
- Africa
- Library Collection RecordThe design of improved technology or production policies depends upon evaluation of alternative options in terms of their efficiency. Measurement of the efficiency of a pastoral livestock system may…Publication Date 1986
- policies
- pastoralism
- carrying capacity
- livestock
- rangeland condition
- Economic Aspects
- management
- Africa
- Library Collection RecordRainfall variability and stocking rate in extensive ranching regions in the Northwestern Transvaal, South Africa, can have substantial influence on feed availability per animal and thus on beef…Publication Date 1979
- rainfall
- stocking rates
- rangelands
- animal nutrition
- animal production
- modelling
- Economic Aspects
- Africa
- Library Collection RecordIt is as important to measure the degree of risk involved as it is to measure the probable return from an investment project. The expected returns from such a project are usually calculated from a…Publication Date 1977
- rangeland condition
- agriculture
- Economic Aspects
- livestock
- Africa
- Library Collection RecordThe conventional view of 34;traditional 34; or informal systems of African land rights is that they impede agricultural development, and that land titling or registration is needed to encourage land…Publication Date 1990
- politics
- socio-economic aspects
- rangelands
- economics
- land-use
- pastoralism
- soils
- legislation
- management
- stakeholders
- Africa
- Library Collection RecordThe discussion about rangeland degradation in African pastoral systems has so far largely been based on the conventional theory of [`]carrying capacity'. This paper argues that the carrying…Publication Date 1996
- degradation
- grazing systems
- Rangeland ecosystems
- grazing
- rangeland condition
- rangelands
- subsistence agriculture
- pastoralism
- carrying capacity
- management
- stocking rates
- forage quality
- plant production
- policies
- Africa
- Library Collection RecordSPUR (Simulation of Production and Utilization of Rangelands) is a physically-based model designed to simulate the complexity of rangeland ecosystems (Wight and Skiles, 1987). Results of extensive…Publication Date 1996
- model evaluation
- Rangeland ecosystems
- Spur
- modelling
- management
- soils
- temperature
- livestock
- Africa
- Library Collection RecordA plant growth model has been developed as a component of a general rangeland production and utilization model (SPUR). The carbon and nitrogen content of standing green, live roots, propagules,…Publication Date 1988
- modelling
- rangelands
- animal production
- plant production
- management
- Africa
- Library Collection RecordRangeland areas are characterized by sparse and limited hydrological data that make the use of existing mathematical runoff models difficult and impractical. A simple rational mathematical model was…Publication Date 1989
- Runoff modeling
- Hydrological modeling
- Runoff simulation
- Snowmelt modeling
- rangeland hydrology
- modelling
- rainfall
- rangelands
- runoff
- Africa
- Library Collection RecordThis article addresses the potential land use conflict between trees and cattle. The search for pasture frequently leads to the large-scale destruction of trees yet, paradoxically, when grazing land…Publication Date 1989
- cattle
- grazing
- pasture management
- communal farming
- land use
- management
- rangelands
- decision support systems
- sustainability
- Africa
- Library Collection RecordPartitioning available energy between plants and bare soil in sparsely vegetated rangelands will allow hydrologists and others to gain a greater understanding of water use by native vegetation,…Publication Date 1992
- rangelands
- hydrology
- ecosystem ecology
- modelling
- Africa
- Library Collection RecordCompared with monospecies stocking, numerous studies substantiate that multispecies stocking can efficiently increase use within and among the mosaic pattern of rangeland plant life forms. However,…Publication Date 1990
- rangeland
- livestock
- management
- diet selection
- foraging ecology
- cattle
- sheep
- vegetation dynamics
- Africa
- Library Collection RecordDifferences in grazing behavior among Hereford (HH), 50% Angus-50% Hereford (AH), 50% Simmental-50% Hereford (1S1H) and 75% Simmental-25% Hereford (3S1H) lactating cows grazing foothill range were…Publication Date 1988
- grazing
- cattle
- foraging ecology
- pasture management
- animal production
- rangelands
- Africa
- Library Collection RecordLearning early in life may play an important role in the development of dietary habits and foraging skills of domestic ruminants. In this review we (1) explore the theoretical and empirical bases of…Publication Date 1987
- diet selection
- foraging ecology
- livestock
- management
- Africa
- Library Collection RecordOn semi-arid rangelands, stems and other standing dead material may accumulate in bunch-grasses and restrict access to new growth by grazing animals. We found that the presence and heights of…Publication Date 1987
- grazing
- rangelands
- rangeland condition
- cattle
- foraging ecology
- diet selection
- Africa
- Library Collection RecordYoung animals face unique constraints in foraging on rangelands. They are at an inherent disadvantage to older animals because they have higher nutritional requirements and they lack foraging…Publication Date 1986
- diet selection
- foraging ecology
- animal nutrition
- animal production
- goats
- rangelands
- Africa
- Library Collection RecordThis paper presents a structured research design to achieve an economically viable and ecologically sustainable land use. It includes the major elements required to achieve a predictive capability at…Publication Date 1996
- adaptive management
- Ecological economics
- landscape ecology
- rangelands
- Sustainable utilisation
- Economic Aspects
- Systems research
- Sustainable development
- management
- Africa
- Library Collection RecordThe carrying capacity concept was developed from animal ecology, and applied to rangeland management in order to assess sustainable livestock stocking rates. In it, long-term ecological…Publication Date 1994
- rangelands
- management
- livestock
- carrying capacity
- stocking rates
- agriculture
- sustainability
- Africa
- Library Collection Record
183 Rangelands
Effective integration of the three main goals of rangeland management - economic gain through livestock production, management of game animals for recreational use, and conservation of biological…Publication Date 1992- rangelands
- biodiversity
- Economic Aspects
- grazing
- livestock
- conservation
- animal impact
- animal production
- management
- fire
- restoration ecology
- Africa
- Library Collection RecordWe begin by stressing that relevant and adequate information is an essential ingredient of efficient decision-making processes aimed at optimising the performance of livestock enterprises. Such…Publication Date 1995
- livestock
- Health production
- Africa
- Monitoring methods
- decision support systems
- management
- animal production
- monitoring
- Africa
- Library Collection RecordDisease of domestic animals on rangelands is caused by a wide variety of agents (some infectious and some non-infectious). Disease is primarily a function of the ecosystem, where a shift in the…Publication Date 1992
- livestock
- disease
- rangelands
- ecosystem ecology
- economics
- Africa
- Library Collection RecordOne of the major diseases affecting human beings and livestock in Africa, trypanosomiasis--known in its common human form as sleeping sickness--remains resistant to general eradication, a wide belt…Publication Date 1979
- disease
- livestock
- insects
- economics
- ecology
- Africa
- Library Collection RecordA state-of-the-art review is presented concerning the transport of nutrients (N and P), oxygen demanding compounds (BOD and COD), indicator organisms and pathogens in runoff from land areas receiving…Publication Date 1980
- pasture management
- rangelands
- pollution
- nutrient loads
- management
- runoff
- Africa
- Library Collection RecordRemote sensing applications used for resource assessment often lack the capacity to test image data against predictions. This article describes remote environment and management assessment (REMA), a…Publication Date 1995
- remote sensing
- Landsat images
- rangelands
- animal impact
- fodder production
- modelling
- Africa
- Library Collection RecordRemote sensing in aridland/rangeland regions has developed to meet the need for low cost management information over large expanses of land. Applications include rangeland management, watershed…Publication Date 1987
- remote sensing
- rangelands
- management
- Africa
- Library Collection RecordLandsat data were simulated for a three-component rangeland scene consisting of grass, brush, and soil to evaluate the effect of soil background reflectance on the sensitivity of ratio and orthogonal…Publication Date 1986
- Landsat images
- rangelands
- soil
- modelling
- Africa
- Library Collection RecordIn this paper, the second part of a two-part series, the performance of a quasi-physically based rainfall-runoff model (QPBRRM) is evaluated for a set of 39 events from a small rangeland catchment (R…Publication Date 1992
- rainfall
- runoff
- rangelands
- soil moisture
- modelling
- ecology
- Africa
- Library Collection RecordThis paper, the first part in a two-part series, is concerned with the interpretation of spatial and temporal variations in soil water content across a small rangeland catchment; two data sets are…Publication Date 1992
- rainfall
- runoff
- rangelands
- soil moisture
- modelling
- Africa
- Library Collection RecordThree algebraic infiltration equations (Kostiakov's, Horton's and Philip's) were examined to determine which one would best fit infiltrometer data collected from a variety of mostly…Publication Date 1976
- rainfall
- rangelands
- hydrology
- Africa
- Library Collection RecordNo abstract availablePublication Date 1969
- hydrology
- rangelands
- southern Africa
- Library Collection RecordNo abstract availablePublication Date 1991
- revegetation
- rangelands
- ecology
- vegetation dynamics
- Africa
- Library Collection RecordSince the mid-19th century settled livestock ranching has been the major form of land use in South Africa, occupying 68% of the land surface. Decreases in livestock densities and ranch numbers during…Publication Date 1995
- rangeland condition
- rangelands
- management
- degradation
- carrying capacity
- grazing
- indigenous encroaching species
- restoration ecology
- sustainability
- Africa
- Library Collection RecordThe Eastern Cape Subtropical Thicket (ECST) forms the transition between forest, semiarid karroid shrublands, and grassland in the Eastern Cape, South Africa. Undegraded ECST forms an impenetrable,…Publication Date 1995
- rangeland condition
- rangelands
- degradation
- eco - tourism
- grasslands
- ecosystem ecology
- Africa
- Library Collection RecordBotswana 039;s Kalahari rangelands have historically supported a diversity of wildlife and a number of subsistence livelihood activities, such as agropastoralism, hunting and gathering. Recently,…Publication Date 2003
- rangelands
- matsheng
- subsistence livelihoods
- sustainability
- community-based natural resource management
- economics
- animal production
- rangeland condition
- Africa
- Library Collection RecordThis is a keynote paper focusing on regional perspectives on agriculture and biodiversity by exploring the situation in Northern Africa, the West African Sahel, East Africa and the Horn, and Southern…Publication Date 2003
- agriculture
- biodiversity conservation
- disequilibrium theories
- environmental Kuznet's curve
- hotspots
- agroecological intensification
- agrodiversity
- organic farming
- agroforestry
- biodiversity
- economics
- soils
- livestock
- management
- land-use
- Africa
- Library Collection RecordThe effect of intensive grazing and browsing of domestic stock and wildlife on the number of species and abundance of vegetation was investigated in the Hoanib River catchment, north-western Namibia…Publication Date 2003
- vegetation impact
- Arid Environment
- intensive grazing
- ecosystem ecology
- vegetation dynamics
- grasslands
- grazing
- livestock
- wildlife
- land use
- drought
- Africa