Rangeland Ecology & Management
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Displaying 1 - 50 of 103 results
- Library Collection RecordNo Abstract available.Publication Date 2002
- cattle
- sustainability
- southern Africa
- Library Collection RecordCarrying capacity is typically defined as the maximum population size that can be supported indefinitely by a given environment, but there are at least 10 different specific definitions used in basic…Publication Date 2008
- Density dependence
- Law of the minimum
- Logistic population growth model
- population regulation
- population size
- Sustainable yield
- carrying capacity
- cattle
- ecology
- rangelands
- southern Africa
- Library Collection RecordNo abstract availablePublication Date 2007
- forage quality
- cattle
- Africa
- Library Collection RecordThis paper presents an environmental exposure assessment model for estimating chronic intake of vanadium (a transition metal) by cattle farmed extensively in areas contaminated by vanadium pollutants…Publication Date 2006
- Environmental epidemiology
- Vanadium
- pollution
- cattle
- model
- Transition metals and exposure assessment
- modelling
- Africa
- Library Collection RecordThe multiple benefits from livestock production to rural households are evaluated in Thorndale, a communal area of the Limpopo Province South Africa. Monetary values of livestock products are…Publication Date 2006
- Communal areas
- Direct-use value
- households
- Livelihood
- Non-marketed outputs
- policy
- cattle
- socio-economic aspects
- rural areas
- goats
- household income studies
- Africa
- Library Collection RecordBiodiversity is a critical component of the natural environment and the protection of it often meant the displacement of local communities in developing countries. The Richtersveld National Park (…Publication Date 2007
- rangelands
- conservation
- Population crashes
- Herd recovery
- goats
- biodiversity
- socio-economic aspects
- national parks
- sheep
- pastoralism
- land use
- Africa
- Library Collection RecordPastoral production around artificial watering points in semi-arid environments affects the density and composition of plant communities. In the Kalahari desert of southwestern Africa, bush…Publication Date 2007
- Rural livelihoods
- watering points
- land degradation
- Fodder trees
- Indigenous ecological knowledge
- Herero
- pastoralism
- traditional knowledge
- piosphere
- degradation
- cattle
- household income studies
- participatory rural appraisal
- livestock
- subsistence agriculture
- socio-economic aspects
- Africa
- Library Collection RecordThe most practical and effective method to increase dry matter production in rangelands is by adequate fertilization. N and K fertilizers have commonly been used worldwide to increase yield in…Publication Date 2008
- forage quality
- botanical composition
- mineral concentration
- harvest date
- cattle
- Africa
- Library Collection RecordIn semiarid savannas of Southern Africa current land use practices and climate change may lead to substantial changes of vegetation structure in the near future, however uncertainty remains about the…Publication Date 2006
- Acacia erioloba
- Bush encroachment
- global change
- Grewia flava
- overgrazing
- seed dispersal
- shrub encroachment
- Southern Kalahari
- Spatial-explicit simulation model
- savanna
- land use
- grazing
- climate change
- vegetation dynamics
- cattle
- ecosystem ecology
- ecosystem dynamics
- rainfall
- fire ecology
- modelling
- conservation
- management
- carrying capacity
- biodiversity
- indigenous encroaching species
- Africa
- Library Collection RecordThis paper revisits the debate over the relative effectiveness of 'conservative' and 'opportunistic' stocking strategies for African pastoral rangelands. The paper is based on a…Publication Date 2006
- rangelands
- cattle
- Pastoral strategy
- stocking rate
- Capital costs
- southern Africa
- Zimbabwe
- pastoralism
- stocking rates
- socio-economic aspects
- communal farming
- management
- Africa
- Library Collection RecordConserving African wildlife in human-occupied landscapes requires management intervention that is guided by a mechanistic understanding of how anthropogenic factors influence large-scale ecological…Publication Date 2007
- wildlife
- rainfall
- predation
- competition
- apparent competition
- Non-protected area
- management
- conservation
- grasslands
- eco - tourism
- cattle
- Africa
- Library Collection RecordLivestock production systems in Africa are experiencing rapid changes in structure and function due to increased demands for livestock products from a more prosperous and ever-increasing human…Publication Date 2008
- Methane
- livestock systems
- Livestock Populations
- climate change
- IPCC
- Africa
- cattle
- sheep
- goats
- greenhouse gases
- Africa
- Library Collection RecordSuccess in long-term agricultural production in resource-poor farming systems relies on the efficiency with which nutrients are conserved and recycled. Each transfer of nutrients across the farming…Publication Date 2006
- cattle
- Compost
- feed intake
- manure
- nitrogen use efficiency
- N losses
- agriculture
- soil nutrients
- management
- communal farming
- livestock
- Africa
- Library Collection RecordLarge herbivores can both positively and negatively affect primary productivity and rates of nutrient cycling in different ecosystems. Positive effects of grazers in grasslands have been attributed…Publication Date 2006
- livestock
- soil fertility
- rainfall
- ecosystem processes
- savanna
- productivity
- soil fertility
- cattle
- migration
- Africa
- Library Collection RecordLittle is known about the grass species type, composition and nutritive value in the semiarid savannas that sustain most of Swaziland's cattle population through the seven-month-long dry season…Publication Date 2009
- cumulative gas production
- organic matter degradability
- ruminant livestock
- tropical grass species
- nutrition
- cattle
- grasslands
- savanna
- grazing
- soils
- forage quality
- Swaziland
- Africa
- Library Collection RecordThe study focused on investigating the effects of different grazing ratios and stocking rate of cattle and goats under mixed species grazing on different species of plant. The experimental site was…Publication Date 2012
- Mixed-species grazing
- stocking rate
- grazing ratio
- cattle
- goats
- biomass
- Zimbabwe
- Africa
- Library Collection RecordFor estimating herbage intake during grazing, the traditional sward cutting technique was compared in grazing experiments in 2002 and 2003 with the recently developed n-alkanes technique and with the…Publication Date 2005
- dairy cow
- herbage intake
- sward cutting
- n-alkanes
- grazing
- cattle
- fodder quality
- Africa
- Library Collection RecordThis study examined intraspecific variation in mineral composition and rumen degradability of Atriplex nummularia plants and the influence on selection preferences of sheep. Individual plants were…Publication Date 2009
- forage quality
- in situ degradability
- intraspecific variation
- salt bush
- sheep
- nutrition
- diet selection
- forage quality
- South Africa
- Library Collection RecordPrimary energy extraction patterns by livestock under agropastoralism and ranching were investigated by the bite count method in semiarid south-eastern Kenya. Sward biomass for optimal energy intake…Publication Date 2009
- agropastoralism
- energy intake
- ranching
- livestock
- cattle
- sheep
- goats
- pastoralism
- diet selection
- grazing
- management
- animal production
- Kenya
- Africa
- Library Collection RecordThe nutritive value of four subtropical grasses (Panicum maximum, Anthephora pubescens, Digitaria eriantha and Chloris gayana) standing hay were compared in terms of qualitative intake and partial…Publication Date 2009
- Anthephora pubescens
- Chloris gayana
- Digitaria eriantha
- nutritive value
- Panicum maximum
- diet selection
- sheep
- forage quality
- animal nutrition
- grazing
- South Africa
- Library Collection RecordThere is a common perception in South Africa that the youth are not interested in agriculture, leading to two concerns: first, that this is exacerbating the youth unemployment crisis, and second,…Publication Date 2013
- agriculture
- socio-economic aspects
- communal farming
- rural areas
- animal production
- Plant Productivity
- policy
- livestock
- communal rangelands
- cattle
- goats
- South Africa
- Library Collection RecordIn spite of predictions of communal rangeland collapse due to continuous grazing and increased livestock populations, this grazing system remains prevalent in communal areas, suggesting animals…Publication Date 2010
- cattle
- Graze
- key resource areas
- livestock
- communal farming
- rangelands
- grazing
- plant production
- soils
- soil organic carbon
- Eastern Cape
- South Africa
- Library Collection RecordThe reliability of a field test kit for the detection and the persistence of Synergistes jonesii bacteria in sheep was investigated in two trials for 12 months. The test kit consisted of a culture…Publication Date 2010
- DHP-degrading bacteria
- dihydroxypyridine
- mimosine
- diagnostic kits
- sheep
- drought
- forage quality
- disease
- South Africa
- Library Collection RecordSeed ecology may play a role in the widespread increase of Acacia karroo in savanna and grassland. Accordingly, fecundity, predation, mortality by fire, dispersal by livestock, and seed longevity…Publication Date 2010
- dispersal
- fire
- seed bank
- seed lngevity
- seed predation
- seed production
- ecology
- savanna
- grassland
- livestock
- insects
- germination
- cattle
- sheep
- goats
- management
- Eastern Cape
- South Africa
- Library Collection RecordThe relative benefit of different grazing management practices for maintaining grassland biodiversity integrity was assessed. Practices considered were grazing system, stocking rate, animal type,…Publication Date 2010
- analytic heirarchy process
- plant diversity
- stocking rate
- veld condition assessment
- grazing
- management
- biodiversity
- fire
- cattle
- sheep
- Impact assessment
- South Africa
- Library Collection RecordCommunal rangelands have a wide range of vegetation communities that sustain livestock. Limited information exists on forage availability and quality in communal areas and how it influences Nguni…Publication Date 2010
- biomass
- bite size
- foraging behaviour
- Nguni
- communal farming
- livestock
- sheep
- KwaZulu-Natal
- South Africa
- Library Collection RecordSinking boreholes to tap groundwater supplies facilitated expansion of all-year round livestock production into the semi-arid Kalahari. Increased grazing and trampling pres sure around the boreholes…Publication Date 1997
- agriculture
- piosphere
- grazing
- grasslands
- soil erosion
- Soil Condition
- cattle
- watering points
- rainfall
- modelling
- Africa
- Library Collection RecordAbstract. Shrub encroachment, i.e. the increase in woody plant cover, is a major concern for livestock farming in southern Kalahari savannas. We developed a grid-based computer model simulating the…Publication Date 2004
- Acacia erioloba
- browsing
- Bush encroachment
- Savanna dynamics
- shrub invasion
- Spatial-explicit simulation model
- indigenous encroaching species
- modelling
- rangelands
- livestock
- savanna
- cattle
- fire ecology
- shrub encroachment
- stocking rates
- Africa
- Library Collection Record1. Ecological edges (zones separating ecosystems or land cover types) can function as active boundaries, unique habitats and dynamic transition zones. Abiotic factors, species and species…Publication Date 2011
- savanna
- ecosystem structure
- Ecosystem function
- edge effects
- grazing
- cattle
- Acacia drepanolobium
- boma
- continuous response function
- Crematogaster
- edge depth
- habitat fragmentation
- multiple edges
- Tetraponera penzigi
- Laikipia
- Kenya
- Africa
- Library Collection Record1. Through their effects on plant communities, herbivores can exert strong direct and indirect effects on savanna ecosystems and have the potential to create and maintain savanna landscape…Publication Date 2010
- grazing
- savanna
- herbivores
- ecosystem ecology
- vegetation dynamics
- cattle
- game
- cattle - wildlife interactions
- ecological legacies
- facilitation
- foraging behaviour
- landscape heterogeneity
- pastoralism
- plant - herbivore interactions
- rangeland
- succession
- Africa
- Library Collection RecordSummary In a general ecological study of the Simanjiro Plains, northern Tanzania carried out from 1970 to 1972, the vegetation was studied as part of the habitat of large herbivores using this area.…Publication Date 1979
- ecology
- grasslands
- savanna
- sheep
- grazing
- animal impact
- Africa
- Library Collection RecordSummary * 1The success of large-scale cattle ranching in African savanna vegetation has often been limited by problems of bush encroachment and disease (in particular trypanosomiasis spread by tsetse…Publication Date 2003
- Bush encroachment
- East Africa
- grazing patterns
- Landsat TM
- remote sensing
- Vegetation classification
- indigenous encroaching species
- shrub encroachment
- cattle
- savanna
- commercial agriculture
- vegetation dynamics
- grazing
- mapping
- Landsat images
- Economic Aspects
- Africa
- Library Collection RecordThe effects of species composition and sward structure on the ingestive behaviour of cattle and sheep grazing a mesic, low quality grassland in South Africa were investigated over the 1990–93…Publication Date 1996
- diet selection
- cattle
- sheep
- grasslands
- grazing
- Africa
- Library Collection RecordDuring the last decade a [']new rangeland science 039; has emerged. One of the tenets of the new science is that pastoralists should not adhere to a single conservative stocking rate, but rather…Publication Date 2000
- Capital costs
- cattle
- carrying capacity
- Environmental costs
- modelling
- rangeland
- southern Africa
- stocking rate
- socio-economic aspects
- economics
- management
- Africa
- Library Collection RecordThe development of the non-woolled Dorper sheep breed is briefly reviewed. Despite the large number of Dorpers in South Africa, precious little research results have been published on its nutrition…Publication Date 2000
- Breed development
- diet selection
- Voluntary feed intake
- Rumen variables
- reproduction
- production
- animal nutrition
- animal production
- sheep
- Africa
- Library Collection RecordWe constructed a simple simulation model (SESS) of the dynamics of forage growth and standing crop and cattle production to evaluate the ecological sustainability of management alternatives for…Publication Date 2003
- models
- simulation
- Grazinglands
- rangelands
- Semi-arid zones
- ANP
- sustainability
- range condition
- grazing
- Cattle reproduction
- forage quality
- cattle
- management
- plant production
- animal production
- soils
- rainfall
- rangeland condition
- Africa
- Library Collection RecordEast Africa contains areas with some of the greatest large mammal biodiversity on the planet. These areas are key natural resources for the economic development of the region. They are also key areas…Publication Date 2003
- Agro-pastoralism
- savanna
- simulation
- Dietary energy
- cash flow
- Ngorongoro Conservation Area
- pastoralism
- cattle
- game farming
- biodiversity
- socio-economic aspects
- ecosystem dynamics
- modelling
- household income studies
- Africa
- Library Collection RecordSeveral of the problems associated with grazing animals in extensive settings are related to their uneven patterns of use across the landscape. After fencing, water and salt are two of the most…Publication Date 2001
- Global positioning system
- Activities
- grazing time
- Resting time
- livestock management
- rangelands
- cattle
- grazing
- management
- Africa
- Library Collection RecordSavanna landscapes in the dry communal areas of southern Zimbabwe are highlyspatially heterogeneous. This year-long study explores the responses of cattle to variation in the availability of fodder…Publication Date 1995
- foraging behaviour
- cattle movement
- spatial and temporal hererogeneity
- savanna vegetation
- Zimbabwe
- savanna
- foraging ecology
- cattle
- plant production
- forage quality
- management
- grazing
- policies
- Africa
- Library Collection RecordThe estimated number of tsessebes on a cattle and wildlife ranch in Zimbabwe decreased during 1995-1999 from 2209 to 435 animals. Existing records of rainfall, cattle management, wildlife numbers,…Publication Date 2003
- Tsessebe antelope
- population decline
- Damaliscus lunatus
- competition
- drought
- cattle
- vegetation dynamics
- forage quality
- Forage Quantity
- management
- Africa
- Library Collection RecordWooded rangelands are a vast grazing land resource globally, including shrublands, savannas and forested ranges. They generally provide forage year-round for small ruminants and they are vitally…Publication Date 2005
- diet selection
- Physical and chemical plant defences
- anti-quality
- grazing behaviour
- grazing
- rangelands
- savanna
- goats
- sheep
- foraging ecology
- livestock
- forage quality
- Africa
- Library Collection RecordDistinguishing between sheep and goats in C4 grass environments using new dental morphology criteria and enamel bioapatite stable carbon isotope ratios (?13C) was tested on 35 modern individuals from…Publication Date 2005
- Carbon isotope ratio analysis
- Dental morphology
- sheep
- goat
- C4 grassland
- Tooth enamel
- Africa
- Library Collection RecordThis study was conducted to understand how seasonality in drylands influences the space-time dynamics of cattle behavior and mobility among pastoralist managed Zebu cattle. The study relies on the…Publication Date 2010
- behavior
- cattle
- Cultural ecology
- GPS
- Herd mobility
- pastoralism
- seasonality
- tracking
- zebu
- Kenya
- Africa
- Library Collection RecordThe direct short-term impact of three rates of stocking (4, 8 and 16 small-stock units [SSU] ha-1) was quantified in terms of soil characteristics of arid Nama Karoo vegetation (subshrub/grass).…Publication Date 2009
- bulk density
- Infiltration Rate
- Karoo bushes
- soil compaction
- stocking rate
- sheep
- agriculture
- grazing
- soils
- stocking rates
- hydrology
- South Africa
- Library Collection RecordMonitoring cattle inflows and outflows over time is a good indicator of herd productivity. In this study, ninety households were monitored for a year to determine the effect of season, rangeland type…Publication Date 2009
- Cattle sales
- Herd dynamics
- Household consumption
- mortality
- cattle
- Economic Aspects
- rangelands
- animal production
- South Africa
- Library Collection RecordHuman land use such as pastoralism may be a key determinant of wildlife populations. We studied the influence of land use on wildlife and livestock in south-western Kalahari, Botswana, during the wet…Publication Date 2009
- Carnivore
- distance
- herbivore
- Mammal
- Ostrich
- savanna
- land use
- conservation
- national parks
- livestock
- pastoralism
- cattle
- species richness
- Africa
- Library Collection RecordTwo long-term mechanistic models of grazing systems in the semi-arid succulent Karoo have been used to study factors that influence vegetation changes, livestock productivity and sustainability of…Publication Date 2005
- Rangeland dynamics
- Semi-arid regions
- Vegetation Change
- Goat production
- goats
- sheep
- rainfall
- rangelands
- vegetation dynamics
- modelling
- diet selection
- Africa
- Library Collection RecordThe communal areas of the semi-arid (200 mm) winter-rainfall Namaqualand region of South Africa are heavily utilised by a large number of subsistence farmers who keep sheep and goats. For several…Publication Date 2005
- Semi-arid rangeland
- Vegetation Change
- Goat production
- desertification
- sheep
- goats
- stocking rates
- management
- pastoralism
- subsistence agriculture
- plant production
- plant community ecology
- animal production
- Africa
- Library Collection RecordThe Knersvlakte in the Succulent Karoo Biome (South Africa) is known for its high plant diversity and endemism. In the course of establishing a conservation area there, we assessed baseline data for…Publication Date 2010
- Aizoaceae
- biodiversity
- herbivory
- Namaqualand
- rangeland management
- Systematic conservation planning
- conservation
- management
- grazing
- sheep
- goats
- South Africa
- Library Collection RecordWe quantified livestock (cattle, shoats, horses and donkeys) losses to lions (Panthera leo) and attitudes to lions, livestock losses and tourism among livestock owners, village residents and tourism…Publication Date 2009
- communities
- cattle
- Benefit
- predation
- compensation
- eco - tourism
- subsistence agriculture
- pastoralism
- socio-economic aspects
- Botswana
- Africa