Rangeland Ecology & Management
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- Library Collection RecordLivestock grazing behaviour is poorly understood in the arid rangelands of Ethiopia, resulting in inadequate rangeland management and grazing systems, which are no improvement on the traditional…Publication Date 2008
- Africa
- Library Collection RecordThe invasive coloniser Ipomoea hildebrandtii aggravates the problem of inadequate grass forage in Kajiado district, Kenya. To test its impact on grass biomass, nitrogen (N) mineralisation and…Publication Date 2008
- Africa
- Library Collection RecordZero grazing is the cornerstone of dairying in intensively cultivated smallholdings in Kenya. The cut and carry method of forage harvesting increasingly is leading to soil mining, especially of…Publication Date 2008
- Africa
- Library Collection RecordA study to investigate oversowing of grass species as a restoration strategy in severely degraded rangeland was carried out in the Allaidege rangeland in north-eastern Ethiopia. Locally collected…Publication Date 2008
- Africa
- Library Collection RecordDiet selection by herbivores is a major determinant of animal and plant production and has a direct bearing on the sustainability of stock farming generally. Fistulated goats were confined in…Publication Date 2008
- Africa
- Library Collection RecordThe seasonality of growth and low nutritional value of kikuyu (Pennisetum clandestinum) pasture restrict milk production. The aim of the study was to determine the dry matter yield, botanical…Publication Date 2008
- Africa
- Library Collection RecordThe high dry matter yield of kikuyu (Pennisetum clandestinum) under favourable conditions supports high stocking rates and milk production per hectare. However, the quality of kikuyu is generally low…Publication Date 2008
- Africa
- Library Collection RecordSeasonal changes in crude protein, phosphorus and calcium contents of five common plant species in the south-western Kalahari were investigated. Three species that are browsed by springbok (Acacia…Publication Date 2008
- Africa
- Library Collection RecordDevelopment of extensive livestock production in KwaZulu-Natal is constrained by seasonal variability of rangeland production and low forage nutritional quality. A three-year study was implemented to…Publication Date 2008
- Africa
- Library Collection RecordAn experiment was conducted to investigate the influence of stage of growth at harvest on fermentative characteristics of Digitaria eriantha subsp. eriantha silage. The treatment included three…Publication Date 2008
- Africa
- Library Collection RecordAcacia karroo has invaded large areas of the Hluhluwe part of the Hluhluwe-Imfolozi Park, despite the relatively frequent fire regime (mean and median fire frequency of 2.9 and 1.3 years,…Publication Date 2008
- Africa
- Library Collection RecordDescription not available.Publication Date 2008
- Africa
- Library Collection RecordGrazing strategies found in communal areas are a result of interactions between social, ecological and institutional factors. To understand the processes in operation, and help in improving…Publication Date 2008
- Africa
- Library Collection RecordThe communal lands of the Eastern Cape have been regarded as both tools and problems by policy-makers. In particular, communal lands are problematised as environmentally degraded, of suboptimum…Publication Date 2008
- Africa
- Library Collection RecordA participatory multi-stakeholder process of finding options for improving livestock production in the severely degraded communal grazing area of Sterkspruit in South Africa was conducted. Interviews…Publication Date 2008
- Africa
- Library Collection RecordLand redistribution schemes (e.g. Settlement Land Acquisition Grant and Land Redistribution for Agricultural Development) initiated since the mid-1990s in Limpopo province under national land reform…Publication Date 2008
- Africa
- Library Collection RecordThe main radiation of large mammalian herbivores in Africa took place in the Pliocene?Pleistocene, when a long-term trend towards aridification promoted grasslands and the diversification of ruminant…Publication Date 2008
- Africa
- Library Collection RecordDebate among scientists about ecological dynamics and appropriate management of semi-arid rangelands has led to a challenge of received wisdoms of range management and pastoral development in dryland…Publication Date 2008
- Semi-arid rangeland
- pastoralism
- Water Point
- grazing gradient
- ordination
- species response curve
- Namibia
- rangeland condition
- rangelands
- piosphere
- grazing
- biodiversity
- management
- Africa
- Library Collection RecordA field experiment was conducted on an acid soil in a semi-subsistence farming area of KwaZulu-Natal, South Africa to investigate the possibility of using organic amendments as liming materials…Publication Date 2008
- lime
- Organic amendments
- Soil acidity
- Strip tillage
- no-till
- subsistence agriculture
- soil fertility
- Soil Condition
- plant production
- rehabilitation
- Africa
- Library Collection RecordThe Highveld region in South Africa is an important area for its food production for the nation, as 70% of country's cereal crops and 90% of the commercially grown maize is cultivated there. The…Publication Date 2008
- Agro-ecosystem
- climate change
- sustainability
- food security
- South Africa
- agriculture
- Africa
- Library Collection RecordWithin the Kyoto Protocol, the clean development mechanism (CDM) is an instrument intended to reduce greenhouse gas emissions, while assisting developing countries in achieving sustainable…Publication Date 2008
- climate change
- afforestation
- reforestation
- land use
- Spatial modeling
- trees
- forests
- carbon
- CDM-AR
- land use change
- greenhouse gases
- Sustainable development
- socio-economic aspects
- Carbon Sink
- grasslands
- savanna
- food security
- 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 RecordDry and mature tree fruits are a potential source of protein for goats in the semi-arid areas of southern Africa, but their chemical composition and feeding value is largely unknown. This study…Publication Date 2008
- Tree fruits
- protein supplements
- chemical composition
- in vitro gas production
- In vitro degradation
- Partition factors
- forage quality
- goats
- savanna
- Africa
- Library Collection RecordWe compared prediction of in vivo dry matter (DMD) and neutral detergent fiber (aNDFD) digestibility by the following techniques: (1) Tilley and Terry two-stage in vitro (conventional in vitro or…Publication Date 2008
- Digestion Techniques
- Filter bags
- Grinding size
- in vitro digestibility
- livestock
- animal nutrition
- fodder quality
- Africa
- Library Collection RecordThe commodification of traditional knowledge is a lively topic for academic debate, with opinions ranging from categorical rejection of this process, to views that it could be a liberating act. This…Publication Date 2008
- Benefit sharing
- Commodification
- Indigenous knowledge
- Traditional medicine
- medicinal plants
- Ethnobotany
- Africa
- Library Collection RecordThe differences in knowledge of biological resource use between societal and demographic groups are often poorly understood; yet they are an important element of sustainability. Differences in gender…Publication Date 2008
- conservation
- Indigenous knowledge
- Livelihoods
- Non-timber forest products
- Red Data Lists
- savannas
- South Africa
- woody plants
- medicinal plants
- subsistence agriculture
- non-grazing resources
- Africa
- Library Collection RecordWithin arid plant communities species vary considerably in the ability to germinate under water stress. Attempts to correlate this variation with environmental gradients have remained largely…Publication Date 2008
- dormancy
- drought tolerance
- facilitation
- Nurse plants
- PEG
- Predictive germination
- Seed mass
- soil moisture
- soil texture
- Southern Kalahari
- savanna
- germination
- seeds
- drought
- Africa
- Library Collection RecordThe impact of browsers on the structure of woody vegetation has been well documented in savanna landscapes but the spatial distribution of these impacts is poorly understood. Savannas are…Publication Date 2008
- Boundary
- elephant
- monitoring
- savanna
- scale
- spatial
- ecosystem dynamics
- animal impact
- Africa
- Library Collection RecordThe purpose of the study was to capture the restoration knowledge of land-users in lowland Namaqualand, South Africa to aid the development of restoration guidelines for this region. We interviewed…Publication Date 2008
- local knowledge
- mining
- Oral histories
- Succulent karoo
- semi-arid
- Wind erosion control
- windbreaks
- Wind-nets
- Africa
- Library Collection RecordContinuous human population expansion pressure on conservation ecosystems restricts wildlife areas, and necessitates active management. In areas of changing land-use and increasing human-animal…Publication Date 2008
- Loxodonta africana
- Ranging behaviour
- Reaction time
- Cautious behaviour
- Response indicator
- GIS
- national parks
- management
- land use
- conservation
- Africa
- Library Collection RecordClimate matching can assist in exploration for biological control agents to control invasive organisms, especially when the native range of the target organism is broad, and control is required in a…Publication Date 2008
- Agent selection
- biological control
- Chromolaena odorata
- climate matching
- CLIMEX
- FloraMap
- Invasive alien species
- modelling
- Alien invasive species
- management
- decision support systems
- Africa
- Library Collection RecordThe potential to provide environmental proxies using stable carbon isotopes from modern and archaeological charcoal is explored. Experiments on modern Podocarpus (Yellowwoods) show that ?13C values…Publication Date 2008
- Stable carbon isotopes
- Archaeological charcoal
- Palaeoenvironmental signals
- Middle Stone Age
- palaeobotany
- Africa
- Library Collection RecordPalaeoenvironmental evidence indicative of former climatic conditions in the Eastern and adjoining Western Cape during the last ~ 45 000 yr is presented and summarised. Interstadial conditions began…Publication Date 2008
- Late Quaternary
- Last Glacial Maximum
- Late Glacial
- Holocene
- Palaeoclimatology
- palaeoenvironments
- South Africa
- palaeoclimate
- Africa
- Library Collection RecordA payments for ecosystem services (PES) system came about in South Africa with the establishment of the government-funded Working for Water (WfW) programme that clears mountain catchments and…Publication Date 2008
- Working for Water
- Payment mechanisms
- ecosystem services
- water supply
- Poverty relief
- Poverty
- Alien invasive species
- fire
- plant production
- biodiversity
- hydrology
- vegetation dynamics
- Economic Aspects
- Africa
- Library Collection RecordThe self-thinning line is a very robust pattern, which can be obtained in modeling studies by a variety of different mechanistic assumptions. Our opinion is that we can only advance in our…Publication Date 2008
- Size inequality
- Competitive asymmetry
- Zone of influence model
- Arid savanna
- Acacia reficiens
- Namibia
- Parsimony
- Pattern-oriented modeling
- savanna
- vegetation dynamics
- modelling
- Africa
- Library Collection RecordThis paper reports on the development and testing of a simulation model to assess the impacts of two seed-feeding biological control agents on the dispersal of an invasive perennial tree, Hakea…Publication Date 2008
- Hakea sericea
- South Africa
- biological control
- population dynamics
- seed dispersal
- Weibull distribution
- fire frequency
- seed banks
- Alien invasive species
- fire
- modelling
- Africa
- Library Collection RecordThis paper describes a procedure for evaluating the desertification risk in threatened areas. The procedure is based on an eight-equation dynamic model of a generic human-resource system that can be…Publication Date 2008
- Desertification risk
- System Dynamics
- Alternative long-term states
- desertification
- modelling
- management
- grasslands
- sustainability
- land use
- 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 RecordPrecision agriculture (PA) is an innovative, int+O101egrated and internationally standardized approach aiming to increase the efficiency of resource use and to reduce the uncertainty of decisions…Publication Date 2008
- precision agriculture
- grassland
- Perspectives
- Constraints
- interdisciplinary research
- grasslands
- remote sensing
- plant production
- Economic Aspects
- agriculture
- decision support systems
- management
- Africa
- Library Collection RecordLand management in tropical woodlands is being used to sequester carbon (C), alleviate poverty and protect biodiversity, among other benefits. Our objective was to determine how slash-and-burn…Publication Date 2008
- savanna
- Tropical deciduous forest
- basal area
- Allometric equations
- Wood density
- soil bulk density
- Soil C stock
- biodiversity
- Shannon index
- Chronosequence
- land use
- carbon dioxide
- carbon sequestration
- socio-economic aspects
- management
- soil organic carbon
- Africa
- Library Collection RecordGrassland afforestation with coniferous trees, occurring in many parts of the world, can greatly affect the nature and transformation of soil organic matter and associated nutrients, including…Publication Date 2008
- Grassland afforestation
- Soil phosphorus availability
- Organic phosphorus mineralization
- 31P NMR spectroscopy
- Soil biological fertility
- ecosystem dynamics
- Africa
- Library Collection RecordIn the Miombo Woodlands Region of south-central Africa, the interaction between fires and elephants is one of the main drivers of vegetation, along with climate, soils and topography. Fire-elephant…Publication Date 2008
- fire
- Elephants
- multivariate statistics
- Miombo woodlands
- conservation
- savanna
- mammals
- Nature reserves
- vegetation dynamics
- ecology
- ecosystem ecology
- Africa
- Library Collection RecordLittle is known about the soil carbon stocks of Central Africa although such baseline data are needed for research and policy development on soil carbon changes. Estimates are presented based on a 1:…Publication Date 2008
- soil carbon
- Legacy soil data
- Central Africa
- Pedotransfer procedures
- Africa
- Library Collection RecordIn Kenya, lands surrounding wildlife protected areas (PAs), referred to as dispersal areas, have undergone widespread land use changes, but these have been little studied. This study investigated…Publication Date 2008
- conservation
- agriculture
- national parks
- land use
- grazing
- biodiversity
- disturbance
- rainfall
- Africa
- Library Collection RecordSummary * 1Demographic processes, particularly the recruitment of seedlings, are critical to the long-term survival and re-establishment of plant populations. In many perennial grasslands successful…Publication Date 2008
- demography
- emergence
- full factorial experiment
- intraspecific competition
- irrigation
- recruitment limitation
- seed addition
- seedling survival
- semi-arid savanna
- Stipagrostis uniplumis
- grasslands
- fire ecology
- seeds
- ecosystem ecology
- vegetation dynamics
- germination
- Africa
- Library Collection RecordThe ability to produce vegetative shoots is a form of persistence in arid and semiarid savannas allowing trees to survive herbivory, fire and cutting. In terms of growth rates and survival, this form…Publication Date 2008
- browsing
- coppice
- Exclosure
- grazing
- Resprouting
- restoration
- Savanna woodland
- Africa
- Library Collection RecordAims Mapping vegetation through remotely sensed images involves various considerations, processes and techniques. Increasing availability of remotely sensed images due to the rapid advancement of…Publication Date 2008
- vegetation mapping
- remote sensing sensors
- image processing
- image classification
- mapping
- remote sensing
- Africa
- Library Collection RecordSolanum mauritianum Scopoli (Solanaceae; 'bugweed') is a major weed of natural vegetation and plantations in the eastern higher rainfall regions of South Africa. This study assessed the…Publication Date 2008
- Ecosystem repair
- integrated control
- non-native species
- restoration ecology
- weed management
- Working for Water
- Alien invasive species
- ecosystem ecology
- hydrology
- grasslands
- savanna
- herbicides
- seed banks
- germination
- Africa
- Library Collection RecordRiparian zones are complex disturbance-mediated systems that are highly susceptible to invasion by alien plants. They are prioritized in most alien-plant management initiatives in South Africa. The…Publication Date 2008
- biological invasions
- Community recovery
- invasive alien plants
- restoration ecology
- Soil-stored seeds
- species assemblages
- seed banks
- Alien invasive species
- disturbance
- Africa
- Library Collection RecordA number of studies have begun to show the large impact that pastoralism has on African savanna ecosystems. Here we look at the impact of abandoned settlements on the distribution of the large…Publication Date 2008
- pastoralism
- Sedentarization
- primary succession
- Nutrient hotspots
- community
- land use
- Abandoned lands
- vegetation dynamics
- Africa
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