Rangeland Ecology & Management
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Displaying 101 - 150 of 252 results
- 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 RecordInteractions between fire regime, dispersal strategies and patch structure were examined as key issues for the management of floristic composition of grasslands, through a model that simulates the…Publication Date 2001
- grasslands
- fire management
- fire frequency
- Dispersal strategies
- colonization
- simulation model
- grassland
- fire ecology
- management
- vegetation dynamics
- biodiversity
- modelling
- seeds
- Africa
- Library Collection RecordFocusing on the issue of veldt degradation and grazing pressure on rangelands, a simplified model was constructed for a sustainable stocking rate (SR) evaluation of the complex system of semi-arid…Publication Date 1999
- stocking rates
- mixed grazing
- modelling
- Arid and sub-humid regions
- grazing
- degradation
- management
- decision support systems
- biodiversity
- traditional knowledge
- ecosystem ecology
- conservation
- foraging ecology
- Africa
- Library Collection RecordGiven current population trends and projections in sub-Saharan Africa, it is anticipated that substantial intensification of agricultural cropland is certain within the next decades. In the absence…Publication Date 2002
- climate
- conservation
- Livelihoods
- socio-economic aspects
- ecology
- biodiversity
- legislation
- Communal areas
- subsistence agriculture
- sustainble development
- Africa
- Library Collection RecordThe role of herbivores in controlling plant species richness is a critical issue in the conservation and management of grassland biodiversity. Numerous field experiments in grassland plant…Publication Date 1998
- herbivores
- grassland
- diversity
- species richness
- environmental gradients
- grasslands
- biodiversity
- conservation
- management
- livestock
- soil fertility
- rainfall
- ecosystem ecology
- Africa
- Library Collection RecordAbstract not available.Publication Date 2000
- Mkomazi
- Game Reserve
- ecology
- conservation
- biodiversity
- savanna
- Africa
- Library Collection RecordA vegetation survey of road verges along an urban to rural gradient in the Potchefstroom Municipal Area was conducted. Important applications of these studies include understanding of the role of…Publication Date 2000
- Braun-Blanquet approach
- Dispersal corridors
- roadside vegetation
- vegetation analysis
- ecosystem ecology
- management
- biodiversity
- Africa
- Library Collection RecordThe species composition of grazing lands can be influenced by livestock and grazing pressure. A study on manure seed bank was conducted in Ghinchi highland Research Site in Ethiopia between 1995 and…Publication Date 2000
- manure
- species
- Life-form
- livestock
- seed banks
- biodiversity
- grazing
- species richness
- grasslands
- germination
- soil fertility
- management
- Africa
- Library Collection RecordLand-use practices can impact on bird populations. This study set out to explain why the helmeted guineafowl, Numida meleagris (Linnaeus 1766; Aves: Numididae) declined in the Midlands of KwaZulu-…Publication Date 1999
- Helmeted guineafowl
- Land-use patterns
- Pesticides
- Maize agriculture
- KwaZulu-Natal
- Edge distance
- birds
- conservation
- biodiversity
- savanna
- land use
- Africa
- Library Collection RecordAn experiment designed to study the effects of habitat fragmentation on biological diversity in the montane grasslands of Southern Africa was launched in September 1994. The Groenvaly experiment is…Publication Date 1998
- grasslands
- Fragmentation experiment
- Pinus elliotti
- Groenvaly
- biodiversity
- vegetation dynamics
- invasive plants
- monitoring
- conservation
- Africa
- Library Collection RecordA study on grasshopper assemblage response to seasonal grazing, rotational grazing, continuous resting and continuous grazing was undertaken in the eastern Karoo, South Africa. Rotationally-grazed…Publication Date 2003
- seasonal grazing
- rotational grazing
- Karoo
- grasshoppers
- South Africa
- plant production
- insects
- grazing
- land use
- rangelands
- biodiversity
- Africa
- Library Collection RecordTransformation of natural vegetation to other land-uses, such as crop cultivation and urban development, presents the most important threat to biodiversity. Plant and animal species distribution data…Publication Date 2003
- Land transformation
- Biodiversity risk
- arable land
- conservation
- species richness
- biodiversity
- land reform
- land use
- policies
- management
- Africa
- Library Collection RecordGlobal debates surrounding the management of natural resources in protected areas advocate greater involvement of local populations in order to maintain sustainable resource use and conserve…Publication Date 2001
- Botswana
- Livelihoods
- natural resources
- protected areas
- sustainability
- management
- national parks
- biodiversity
- socio-economic aspects
- Africa
- Library Collection RecordThe impact of ecological factors such as changes in rainfall could lead to large compositional changes in the diverse indigenous flora of southern Africa. A study was therefore initiated to determine…Publication Date 1995
- vegetation
- rainfall increase
- rainfall decrease
- southern Africa
- rainfall
- species richness
- biodiversity
- drought
- grazing
- vegetation dynamics
- Africa
- Library Collection RecordSemi-arid rangelands, which have retrogressed beyond a certain threshold and could not rest-recover, can only be restored by mechanical inputs helping the re-establishment of vegetation. Therefore,…Publication Date 2003
- degradation
- Hollows
- Mechanical implements
- restoration
- Rip action
- Species composition and density
- Walking-stick planter
- rangeland condition
- restoration ecology
- species richness
- biodiversity
- Soil Condition
- Africa
- Library Collection RecordNo abstract availablePublication Date 1970
- grasslands
- ecology
- biodiversity
- southern Africa
- Library Collection RecordThe biodiversity convention aims at conserving biodiversity and guaranteeing fair and sustainable human use of biodiversity. The convention further requires that the causes of biodiversity decline…Publication Date 1999
- biodiversity
- climate change
- Earth system modelling
- global change
- Scenarios
- land use
- modelling
- Africa
- Library Collection RecordWhere species distribution data are inadequate reserve selection procedures have to rely on surrogate measures of biodiversity. The informativeness of land facets (the simplest units of a landscape…Publication Date 1999
- biodiversity
- Surrogates
- Land facets
- Reserve selection
- Priority conservation areas
- conservation
- species richness
- land use
- ecosystem ecology
- Africa
- Library Collection RecordLarge-scale afforestation with pines is taking place in montane grasslands of South Africa. Many species dependent on the grass sward will be eliminated from the planted areas. Land should be…Publication Date 1999
- commercial afforestation
- Afromontane
- endemicity
- land type
- species richness
- biodiversity
- birds
- Africa
- Library Collection RecordDifferences in reporting rates of birds on atlas checklists from major land-use categories (protected, unprotected, wildlife management area (WMA)) in Botswana were investigated to evaluate the…Publication Date 1998
- Botswana
- Bird conservation
- land use
- overgrazing
- Atlas-data
- biodiversity
- grasslands
- conservation
- Africa
- Library Collection RecordThe grass Agrostis stolonifera L. is the most successful introduced vascular plant at sub-Antarctic Marion Island. Since its accidental introduction, probably in the 1950s, it has spread over the…Publication Date 1998
- Sub-Antarctic
- introduced plants
- Soil fauna
- species richness
- conservation
- Alien invasive species
- biodiversity
- ecology
- Africa
- Library Collection RecordNomadic larks in the semi-arid Nama-Karoo, South Africa, depend on patches of temporally suitable habitat for breeding. These patches occur where rain has recently fallen, where there has been growth…Publication Date 1998
- semi-arid
- Nomadic birds
- modelling
- Patchy environment
- Stochastic environment
- Protected area design
- biodiversity
- birds
- conservation
- ecosystem ecology
- Africa
- Library Collection RecordMontane grasslands in high rainfall areas of South Africa are subject to large-scale afforestation, making wildlife conservation evaluations necessary. A system which uses landscape features to…Publication Date 1997
- bird
- butterfly
- endemic
- grasshopper
- species richness
- biodiversity
- savanna
- conservation
- soil classification
- Africa
- Library Collection RecordWe produced a conservation plan that achieved conservation targets for biodiversity pattern and process in the species- and endemic-rich Cape Floristic Region of South Africa. Features given…Publication Date 2003
- biodiversity
- conservation
- ecology
- restoration
- conservation
- management
- Africa
- Library Collection RecordThis paper provides an introduction and overview for the special issue on systematic conservation planning in the species-rich and highly vulnerable Cape Floristic Region. Firstly, we outline the…Publication Date 2003
- conservation
- planning
- management
- biodiversity
- land-use
- socio-economic aspects
- Africa
- Library Collection RecordThis study investigates the practical and financial implications of alternative strategies for meeting explicit conservation goals on the Agulhas Plain, South Africa. This is an area of exceptional…Publication Date 2003
- conservation planning
- off-reserve conservation
- Protected area network
- incentives
- Economic Aspects
- conservation
- biodiversity
- Alien invasive species
- agriculture
- land use
- management
- legislation
- Africa
- Library Collection RecordExpert-based and systematic, algorithm-based approaches to identifying priority areas for conservation are sometimes posited as alternatives. While both approaches have pros and cons, the systematic…Publication Date 2003
- conservation
- modelling
- biodiversity
- management
- Africa
- Library Collection RecordThe formulation of a strategic plan for the conservation of terrestrial biodiversity in the Cape Floristic Region (CFR; 87,892 km2) requires an objective and spatially explicit assessment of the…Publication Date 2003
- Biodiversity hotspots
- conservation planning
- Conservation area network: Ecological and evolutionary processes
- persistence
- Representation
- Gap analysis
- conservation
- GIS
- remote sensing
- biodiversity
- species richness
- management
- Africa
- Library Collection RecordBush encroachment is a serious environmental and economic problem in Namibia, but little is known about impacts on native reptile diversity. Area-confined visual surveys were used to examine a…Publication Date 2002
- Lizards
- Mabuya
- Pedioplanis
- Lygodactylus
- Bush encroachment
- savanna
- Habitat change
- Namibia
- Africa
- biodiversity
- indigenous encroaching species
- reptiles
- ecosystem ecology
- Africa
- Library Collection RecordAt current densities, elephants are having a severe impact on plant community structure and species richness in the Addo Elephant National Park (AENP), Eastern Cape, South Africa. Those species that…Publication Date 2001
- Biodiversity maintenance
- Elephant impacts
- grazing impacts
- Reserve design
- Threatened flora
- biodiversity
- animal impact
- grasslands
- ecosystem dynamics
- species richness
- national parks
- conservation
- Africa
- Library Collection RecordArid rangelands host a variety of drought-tolerant wildlife species, many of them requiring conservation efforts for the survival of their populations. The development of drinking water sources for…Publication Date 2001
- livestock
- wildlife
- association
- Water points
- environmental impact
- spatial analysis
- Kenya
- biodiversity
- land-use
- management
- population ecology
- system ecology
- Africa
- Library Collection RecordPatterns of higher plant species richness and beta diversity were assessed using standard Modified-Whittaker plots in relation to landuse, slope position and mean annual rainfall across a rainfall…Publication Date 2000
- species richness
- biodiversity
- land use
- rainfall
- savanna
- communal farming
- conservation
- management
- Africa
- Library Collection RecordUrban nature conservation issues in South Africa are overshadowed by the goal to improve human well-being, which focuses on aspects such as poverty, equity, redistribution of wealth and wealth…Publication Date 2004
- Biotope mapping
- Integrated research
- native vegetation
- Phytosociology
- Urban ecology
- grasslands
- South Africa
- decision support systems
- biodiversity
- land-use
- Africa
- Library Collection RecordAbstract Invasive alien plants pose a threat to biodiversity worldwide, and the costs of control are ever-escalating. Early detection and prediction of areas potentially at risk is crucial to…Publication Date 2014
- Invasive alien species
- Potential distribution
- Occurrence data
- Species distribution modeling
- Maxent
- biodiversity
- South Africa
- Library Collection RecordSpatial technologies present possibilities for producing frequently updated and accurate habitat maps, which are important in biodiversity conservation. Assemblages of vegetation are equivalent to…Publication Date 2010
- biodiversity conservation
- habitat mapping
- remote sensing
- soil fertility
- conservation
- biodiversity
- mapping
- satellite imagery
- national parks
- South Africa
- Library Collection RecordIn this study, we asked the Ariaal herders of northern Kenya to answer 'why, what and how' they classified landscape, and assessed and monitored the biodiversity of 10 km2 of grazing land.…Publication Date 2009
- Anthropogenic indicators
- Ariaal
- biodiversity
- Indigenous knowledge
- Grazing suitability
- landscape classification
- Landscape potential
- traditional knowledge
- pastoralism
- monitoring
- grazing
- grasslands
- land use
- Soil Condition
- livestock
- conservation
- management
- Kenya
- Africa
- Library Collection RecordSouth Africa's moist grassland harbours globally significant biodiversity, supplies essential ecosystem services, supports crop and livestock agriculture, forestry and settlement, yet is poorly…Publication Date 2009
- agriculture
- animals
- biodiversity
- birds
- climate
- Conservation of Natural Resources
- crops
- Agricultural/growth & development
- ecosystem
- environment
- forestry
- insects
- mammals
- Poaceae
- Soil/analysis
- grasslands
- land use
- conservation
- management
- landscape ecology
- 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 RecordEstablishment of seasonal grazing enclosures has become an important rangeland rehabilitation strategy in semi-arid regions. This study assessed the impact of enclosure age and enclosure management…Publication Date 2010
- cover
- degradation
- Private land ownership
- seed mixtures
- standing crop
- Stock control
- rangelands
- rehabilitation
- animal impact
- communal farming
- biodiversity
- commercial agriculture
- plant production
- monitoring
- Kenya
- Africa
- Library Collection RecordRelationships between species richness per plant life form and the soil properties: infiltrability, clay plus silt content, salinity, and pH were investigated at eighteen study sites located in…Publication Date 2010
- clay
- EC
- Infiltrability
- niche
- pH
- silt
- Soil Condition
- species richness
- biodiversity
- ecosystem ecology
- South Africa
- Library Collection RecordThis study aimed to quantify and understand the impact of severe land degradation on plant diversity in part of the Succulent Karoo. Although total number of species declined with heavy grazing,…Publication Date 2010
- disturbance
- Extirpation
- grazing
- local extinction
- Nurse plants
- soil crusts
- degradation
- biodiversity
- species richness
- ecosystem ecology
- landscape ecology
- Succulent karoo
- South 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 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 RecordEnvironmental policies in African rangelands affect development and welfare as well as environmental measures. Biodiversity is widely perceived as declining, and environments as undergoing…Publication Date 2004
- environmental policy
- African rangelands
- Environmental discourse
- Kenya
- Tanzania
- Serengeti
- Mara
- land use
- Land privatisation
- Commercial cultivation
- Biodiversity decline
- policies
- rangelands
- biodiversity
- degradation
- management
- decision support systems
- pastoralism
- system economics
- 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 RecordIn previous papers we have considered the optimal mix of biodiversity in semi-arid rangelands, focusing on the steady state. This paper addresses the question of conservation in the optimal use of…Publication Date 2004
- rangelands
- biodiversity
- Managed
- Natural
- conservation
- management
- fire ecology
- grazing
- livestock
- vegetation dynamics
- Africa
- Library Collection RecordOf the 70 cases of classical biological control for the protection of nature found in our review, there were fewer projects against insect targets (21) than against invasive plants (49), in part,…Publication Date 2010
- invasive species
- Ecosystem function
- insect pests
- invasive plants
- ecological restoration
- biological control
- natural ecosystems
- Alien invasive species
- insects
- biodiversity
- ecosystem services
- conservation
- South 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 RecordMany existing parks are currently experiencing difficulties in achieving their conservation aims, yet they remain an important option for maintaining and enhancing the conservation of biological…Publication Date 2009
- Effectiveness evaluation
- Criteria and indicators
- Parks management
- Conservation Policy
- national parks
- ecosystem ecology
- management
- conservation
- biodiversity
- ecosystem services
- sustainability
- monitoring
- South Africa
- Canada