Rangeland Ecology & Management
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- Library Collection RecordFire is a prominent disturbance factor and a major force of environmental change especially in the African savannas. The development of an accurate system to map and monitor fires on the African…Publication Date 2005
- Savanna fires
- Low-resolution bias
- Burned-area mapping
- Seasonal-mosaic
- Africa
- savanna
- fire
- remote sensing
- mapping
- Africa
- Library Collection RecordThe remote sensing of fire severity is a noted goal in studies of forest and grassland wildfires. Experiments were conducted to discover and evaluate potential relationships between the…Publication Date 2005
- Fire severity
- savannah
- Surface reflectance
- Char
- nitrogen
- carbon
- Burn severity index
- Linear and non-linear spectral unmixing
- Elemental emission factor
- savanna
- fire ecology
- GIS
- remote sensing
- grasslands
- modelling
- Africa
- Library Collection RecordA new integrated approach, involving continuum-removed absorption features, the red edge position and neural networks, is developed and applied to map grass nitrogen concentration in an African…Publication Date 2004
- Hymap imagery
- Absorption features
- Continuum removal
- red edge position
- Foliar nitrogen concentration
- Savanna rangelands
- savanna
- rangelands
- mapping
- plant production
- grasslands
- forage quality
- remote sensing
- conservation
- national parks
- Africa
- Library Collection RecordThe remote sensing of pasture quality as determined by nitrogen, phosphorous, potassium, calcium and magnesium concentration is critical for a better understanding of wildlife and livestock feeding…Publication Date 2004
- Field spectra
- Absorption features
- bootstrapping
- Continuum removal
- Savanna rangelands
- remote sensing
- forage quality
- management
- savanna
- rangeland condition
- Africa
- Library Collection RecordThe lack of information on the vegetation status before the use of fire as a management tool in protected areas leads to drastic destruction of the natural vegetation and biodiversity. This paper…Publication Date 2004
- fire risk
- savanna
- LANDSAT-ETM
- Tasseled Cap
- simulation
- national park
- Senegal
- fire
- hazard assessment
- management
- national parks
- modelling
- remote sensing
- Africa
- Library Collection RecordAbstract Woody plant encroachment is a common consequence of disturbance in savannas. Grazers and browsers interfere with sapling establishment dynamics by direct consumption of plant tissue,…Publication Date 2013
- Acacia
- browsing
- grazing
- mesic savanna
- tree sapling biomass
- woody plant encroachment
- indigenous encroaching species
- savanna
- soil nutrients
- ecosystem ecology
- vegetation dynamics
- South Africa
- Library Collection RecordPerennial grasses are a dominant component of many vegetation formations and provide important ecosystem services including supporting herbivores and preventing soil erosion. Despite their importance…Publication Date 2010
- demography
- Density-dependent mortality
- disturbance
- Intra-specific competition
- Tuft mortality
- survival
- Grass mortality
- savanna
- fire ecology
- ecosystem services
- Namibia
- Africa
- Library Collection RecordPollen records from Lake Malawi, Africa spanning the last 135 160;kyr show substantial and abrupt vegetation response to multiple episodes of extreme aridity between 135 and 75 160;ka. Peaks in both…Publication Date 2011
- pollen
- vegetation
- Pleistocene
- Paleoclimate
- East Africa
- Library Collection RecordAccurate reconstructions of past hydrological variability are essential for understanding the climate history of the tropics. In tropical Africa, the relative proportion of vegetation utilizing the…Publication Date 2009
- vegetation
- n-alkane
- Lignin phenol
- Compound-specific carbon isotope
- Paleoclimate
- East Africa
- Library Collection RecordLeaf wax components of terrestrial plants are an important source of biomass in the geological records of soils, lakes and marine sediments. Relevant to the emerging use of plant wax derived…Publication Date 2009
- plant autecology
- biomass
- savanna
- Africa
- Library Collection RecordIt is well recognised that local ecological knowledge is an important facet of natural resource management in rural regions of the developing world. However, techniques to assess levels and to…Publication Date 2010
- experts
- local ecological knowledge
- savanna
- Scoring
- traditional knowledge
- management
- Indigenous knowledge
- South Africa
- Library Collection RecordAnthropogenic fires in Africa are an ancient form of environmental disturbance, which probably have shaped the savanna vegetation more than any other human induced disturbance. Despite anthropogenic…Publication Date 2005
- Anthropogenic fires
- Bush encroachment
- Indigenous knowledge of herders
- fire history
- Namibia
- savanna
- Scale dependence
- species richness
- vegetation trends
- fire ecology
- disturbance
- management
- vegetation dynamics
- landscape ecology
- Africa
- Library Collection RecordThe impacts of fire and grazing management on grass nutritional quality in semi-arid savannas may depend on inherent variation in rainfall and soil nutrient status. We examined the effects of grazing…Publication Date 2010
- crude protein
- Grass nutritional quality
- phosphorus
- rainfall
- grazing
- fire ecology
- soil nutrients
- management
- savanna
- forage quality
- plant production
- Northern Cape
- South Africa
- Library Collection RecordAfrican savannas are primarily used as pastures and are subject to changes in climate and management strategies. For sustainable management of these landscapes ecological knowledge on seasonal and…Publication Date 2010
- beta diversity
- Distance decay
- Precipitation gradient
- species richness
- Systematic sampling
- Tree islands
- biodiversity
- savanna
- pasture management
- climate
- management
- sustainability
- rainfall
- monitoring
- conservation
- Namibia
- Africa
- Library Collection RecordThis study investigates the extent to which seed production in Schinus molle is dependent upon pollinators and outcrossing with the objective of understanding whether pollination and seed set could…Publication Date 2010
- biological invasions
- Breeding system
- dioecy
- Peruvian pepper tree
- pollination
- savanna
- Alien invasive species
- seeds
- South Africa
- Library Collection RecordThe Kalahari Transect (KT) is an International Geosphere-Biosphere Programme mega-transect designed to examine hydrological and ecological patterns and processes throughout the savannas of southern…Publication Date 2010
- grass biomass
- Kalahari
- phosphorus
- precipitation
- savanna
- rainfall
- ecology
- hydrology
- plant production
- Soil Condition
- fertilizer
- southern 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 RecordWe detail the impact of abandoned traditional settlements (or bomas) on plant and nutrient succession in the Amboseli ecosystem, southern Kenya, over the course of a century. Plant and soil data were…Publication Date 2009
- biomass
- Nutrient hotspots
- pastoralism
- patch dynamics
- species richness
- wildlife
- Abandoned lands
- soil fertility
- vegetation dynamics
- savanna
- Africa
- Library Collection RecordSavanna water management is predicated on the hypothesis that surface water availability can be manipulated at scales that influence herbivore distributions. Using a case study in the Kruger National…Publication Date 2005
- water management
- wildlife management
- Semi-arid savannas
- Artificial water sources
- Water source heterogeneity
- rainfall
- Kruger National Park
- savanna
- national parks
- management
- Africa
- Library Collection RecordComparative field studies were conducted on Acacia tortilis (Forsk.) Hyne and Acacia xanthophloea Benth. trees growing in a semi-arid environment in Kibwezi, Kenya, to assess root access to soil…Publication Date 2005
- Acacia
- [delta]13C
- Hydraulic conductance
- savanna
- soil water content
- stomatal conductance
- transpiration
- soil moisture
- plant production
- plant autecology
- drought
- Africa
- Library Collection RecordTransformation of South African succulent thicket in response to grazing is widespread and characterized by the extensive replacement of dense closed-canopy thicket with a [`]pseudo-savanna' of…Publication Date 2005
- desertification
- functional diversity
- Goat browsing
- plant diversity
- grazing
- savanna
- Aerial Photographs
- ecosystem dynamics
- degradation
- Africa
- Library Collection RecordResearch was conducted to investigate rapid chemical responses of Acacia karroo to severe defoliation in a semi-arid, subtropical savanna. A flock of 250 goats reduced available foliage by 87% in a…Publication Date 2005
- alkaloids
- browse
- goats
- Induced responses
- nitrogen
- tannins
- savanna
- foraging ecology
- plant autecology
- Africa
- Library Collection RecordLocal communities use an indigenous classification of environmental land units for natural resource management in central north Namibia. These indigenous land units (ILUs) were compared with a…Publication Date 2005
- Indigenous environmental knowledge
- vegetation
- ordination
- land classification
- Resource Use
- grazing
- Indigenous knowledge
- community based resource management
- management
- ecology
- vegetation dynamics
- Africa
- Library Collection RecordThe study was conducted in a semi-arid savanna of South Africa, dominated by an almost pure stand of Acacia mellifera subsp. detinens (Black Thorn). Due to its invasive habits and suppression of the…Publication Date 2005
- Bush encroachment
- Canopied subhabitat
- soil nutrients
- Uncanopied subhabitat
- savanna
- management
- indigenous encroaching species
- plant production
- Africa
- Library Collection RecordIn evolutionary time frames, grazing by domesticated livestock on the short grass plains of East Africa is a new occurrence resulting in increased animal densities year around and modification to…Publication Date 2005
- evolutionary history of grazing
- Modified-Whittaker plots
- Serengeti ecosystem
- East Africa
- seasonal grazing
- rangelands
- savanna
- grazing
- biodiversity
- vegetation dynamics
- management
- livestock
- animal impact
- Africa
- Library Collection RecordThis paper set out to analyse time-series and spatial livestock data in the arid west of Namibia over a period of 11 years. These were interpreted in the context of rainfall conditions and access to…Publication Date 2004
- carrying capacity
- Central Namib
- desertification
- desert
- Farming system
- Namibia
- range management
- savanna
- Africa
- Library Collection RecordLike other African countries, Madagascar is concerned by vegetation cover degradation especially in savanna ecosystems. In this article, we describe an approach to quantify and localise savanna…Publication Date 2010
- MODIS
- Time series
- STL
- change
- trend
- savanna
- Phenological indicator
- degradation
- remote sensing
- NDVI values
- management
- fire
- Madagascar
- Africa
- Library Collection RecordThe relative abundance and distribution of trees in savannas has important implications for ecosystem function. High spatial resolution satellite sensors, including QuickBird and IKONOS, have been…Publication Date 2010
- Tree cluster
- canopy cover
- SPOT 5
- QuickBird
- Object based image analysis
- NDVI threshold
- savanna
- southern Africa
- Library Collection RecordFires threaten human lives, property and natural resources in Southern African savannas. Due to warming climate, fire occurrence may increase and fires become more intense. It is crucial, therefore,…Publication Date 2009
- Burned area estimation
- Fire probability
- GLM
- Hierarchical partitioning
- logistic regression
- MODIS fire data
- spatial autocorrelation
- fire ecology
- savanna
- modelling
- climate change
- GIS
- East Caprivi
- Namibia
- Africa
- Library Collection RecordThe Phanerozoic has witnessed major changes, with Africa being an integral part of supercontinental landmass agglomeration forming Gondwana, its amalgamation with smaller landmasses to form Pangaea,…Publication Date 2005
- Africa
- climate
- evolution
- flora
- Gondwana
- history
- Madagascar
- Phanerozoic
- plants
- Review
- vegetation
- Africa
- Library Collection RecordThe Blantyre City Area is part of the African savanna in southern Malawi. Sedimentological, geomorphological, chemical and mineralogical studies were conducted to create a lithofacies terrain model.…Publication Date 2005
- Applied geomorphology
- Sedimentology
- savanna
- environment
- Cenozoic
- Malawi
- palaeobotany
- Africa
- Library Collection RecordBush encroachment is a significant phenomenon in savanna environments as it affects wildlife and local livelihoods by preventing new pasture generation. In this article we present a 2000-year record…Publication Date 2010
- Indigenous knowledge
- pollen
- hyrax
- savanna
- indigenous encroaching species
- ecology
- Ethiopia
- Africa
- Library Collection RecordKnowledge of the southern Africa soil carbon pool, its heterogeneity, sources (from trees or grasses), and potential response to climate is extremely limited. In this study the Kalahari Transect (KT…Publication Date 2009
- geostatistics
- Kalahari
- savannas
- Soil [delta]13C
- soil organic carbon
- Stable isotope
- climate change
- savanna
- rainfall
- carbon sequestration
- southern Africa
- Library Collection RecordSavannas and grasslands in South Africa are adapted to fire, yet long-term effects of fire on soil, water and nutrients remain largely unknown. To determine whether frequent burning increases the…Publication Date 2004
- Soil crusting
- infiltration
- fire
- Clay dispersion
- fire ecology
- Soil Condition
- savanna
- grasslands
- soil moisture
- soil nutrients
- Africa
- Library Collection RecordThe influence of Colophospermum mopane (Kirk ex Benth.) Kirk ex J. Leonard on surface soil properties and understorey vegetation was investigated in a semi-arid southern African savanna in Bulawayo,…Publication Date 2005
- mopane
- Understorey vegetation
- Surface soil properties
- soil erosion
- soil nutrients
- Herbaceous species richness
- savanna
- Soil Condition
- biodiversity
- ecosystem dynamics
- ecosystem ecology
- soil fertility
- Africa
- Library Collection RecordTheoretical models predict that the relative importance of facilitation and competition may vary inversely across gradients of abiotic stress. However, these predictions have not been thoroughly…Publication Date 2010
- abiotic stress
- competition
- facilitation
- Herbaceous Species
- Tree
- plant autecology
- biodiversity
- savanna
- rainfall
- modelling
- North Africa
- Library Collection RecordThe need to implement sustainable resource management regimes for semi-arid and arid rangelands is acute as non-adapted grazing strategies lead to irreversible environmental problems such as…Publication Date 2009
- adaptation
- climate change
- Arid rangelands
- Namibia
- Bio-economic simulation approach
- land use
- sustainability
- management
- socio-economic aspects
- grazing
- modelling
- ecology
- savanna
- stocking rates
- decision support systems
- vegetation dynamics
- Namibia
- Africa
- Library Collection RecordDifferent approaches for the assessment of biodiversity by means of remote sensing were developed over the last decades. A new approach, based on the spectral variation hypothesis, proposes that the…Publication Date 2010
- savanna
- Spectral variation hypothesis
- Shannon index
- species richness
- scale
- hyperspectral
- biodiversity
- remote sensing
- landscape ecology
- Namibia
- Africa
- Library Collection RecordNon-equilibrium processes in savannas are poorly understood because little data is available on how tree abundance has changed over long periods of time. Here I analyse fossil pollen and charcoal…Publication Date 2004
- pollen
- charcoal
- Cyclical
- Phase and transition
- stochastic
- Fourier analysis
- savanna
- plant autecology
- palaeobotany
- Africa
- Library Collection RecordSavannas are shaped by drought, herbivory, nutrient limitation, and fire. We assessed the interactions between two of these factors--nutrient limitation and fire--across a savanna landscape in Kruger…Publication Date 2009
- Experimental burn plot
- Granite
- fire
- catena
- Foliar
- savanna
- fire ecology
- soil fertility
- Kruger National Park
- South Africa
- Library Collection RecordKnowledge of the success or otherwise of conservation interventions is often locked within localised networks, resulting in mistakes being replicated unnecessarily. The savannahs of eastern and…Publication Date 2013
- conservation
- Evidence based conservation
- Management interventions
- national parks
- protected areas
- savanna
- management
- Africa
- Library Collection RecordThis study looks at the impact of subdivision and sedentarization of pastoral lands on wildlife numbers and production in a savanna ecosystem of southern Kenya. The study uses aerial counts over a…Publication Date 2009
- land fragmentation
- rangelands
- Maasai
- settlement
- conservation
- land reform
- land use
- savanna
- ecosystem dynamics
- ecosystem ecology
- wildlife
- management
- grazing
- grasslands
- socio-economic aspects
- Kenya
- Africa
- Library Collection RecordHabitat degradation through over-grazing and wood collection is especially prevalent in developing countries such as South Africa. As human populations expand and the demand for land increases, the…Publication Date 2005
- Lizards
- ecosystems
- disturbance
- reptiles
- biodiversity
- human impact
- savanna
- Traditional medicine
- South Africa
- degradation
- conservation
- land use
- species richness
- vegetation dynamics
- Africa
- Library Collection RecordRecent attempts to streamline the identification of areas requiring immediate conservation attention have resulted in the development of prioritisation procedures that identify areas of biodiversity…Publication Date 2004
- biodiversity
- conservation
- Land cover change
- Land use suitability
- land use
- savanna
- management
- decision support systems
- Africa
- Library Collection RecordIn African savannahs, large trees improve grass quality, particularly in dry and nutrient poor areas. Enhanced below-canopy grass nutrients, such as nitrogen and phosphorus contents should therefore…Publication Date 2009
- canopy
- feeding preferences
- Fibre
- Grass quality
- Grazer
- herbivores
- linear programming
- nitrogen
- nutrients
- phosphorus
- savanna
- forage quality
- grazing
- animal nutrition
- modelling
- Africa
- Library Collection RecordSavanna grass cover is dynamic and its annual extent resonates with wet season rainfall, as shown by satellite observations of normalized difference vegetation index (NDVI) time series for the…Publication Date 2005
- savanna
- precipitation
- Satellite
- NDVI
- grass
- ecohydrology
- rainfall
- NDVI values
- vegetation dynamics
- soil moisture
- modelling
- grasslands
- Africa
- Library Collection RecordLandscapes commonly comprise of mosaics, patches and boundaries. Riparian boundaries are complex to delineate and characterize, with a multitude of variables available for delineation. Multiple…Publication Date 2009
- Boundary
- vegetation
- Delineation
- Kruger National Park
- national parks
- vegetation dynamics
- ecology
- Kruger National Park
- South Africa
- Library Collection RecordThe development of savanna-type grasslands is a relatively recent phenomena in East Africa. The stable carbon isotopic composition of paleosol carbonates from fossil localities in East Africa show…Publication Date 1992
- palaeobotany
- grasslands
- savanna
- Africa
- Library Collection RecordSeasonal effects of woody plant cover on dietary selection and nutrition of goats were evaluated in an Acacia senegal savanna in Kenya during the dry season and wet season in 1982. Treatment paddocks…Publication Date 1990
- diet selection
- goats
- savanna
- forage quality
- Forage Quantity
- foraging ecology
- management
- animal nutrition
- Africa
- Library Collection RecordNo abstract availablePublication Date 1995
- ecosystem dynamics
- degradation
- savanna
- modelling
- Africa