Rangeland Ecology & Management
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- Library Collection RecordThis study explored the impacts of sustained heavy grazing in six vegetation types across an altitudinal and rainfall gradient in the Kamiesberg mountain range in Namaqualand. The study was carried…Publication Date 2007
- grazing impacts
- plant composition
- Communal areas
- Succulent karoo
- Upland habitats
- biodiversity
- subsistence agriculture
- socio-economic aspects
- Africa
- Library Collection RecordAdvanced Very High Resolution Radiometer (AVHRR), Normalized Difference Vegetation Index data (NDVI, 1 km2, 1985-2003) and modeled net primary production (NPP, 8 km2, 1981-2000) data were used to…Publication Date 2007
- monitoring
- AVHRR
- NDVI
- rain-use efficiency
- NPP
- Communal lands
- South Africa
- degradation
- land use
- remote sensing
- NDVI values
- mapping
- rainfall
- Africa
- Library Collection RecordWe use the concept of ecological revolutions to explain the environmental history of Namaqualand, from the advent of pastoralism 2000 years BP, to colonial settlement in the 18th century and finally…Publication Date 2007
- degradation
- Environmental history
- human impact
- population
- repeat photography
- socio-economic aspects
- agriculture
- grazing
- management
- land use
- Africa
- Library Collection RecordThe reserves and homelands across South Africa share a common history of policy interventions resulting in sedentarization, villagization and formalization of communal land use. In Namaqualand, such…Publication Date 2007
- pastoralism
- Municipal commonage
- rangeland management
- Elite capture
- rangelands
- management
- communal farming
- subsistence agriculture
- policies
- land reform
- Africa
- Library Collection RecordThe present aridity of Africa contrasts with the lush environments that existed over most of the continent in the early Cenozoic. The extinction of large terrestrial herbivores at the end of the…Publication Date 2006
- Africa
- Turkana basin
- paleoenvironments
- paleoecology
- Mammalian evolution
- Megafauna
- Bovidae
- Africa
- Library Collection RecordSatellite imagery derived fire history data for the southern Okavango Delta, Botswana from 1989 to 2003 were used to analyse the temporal and spatial distribution of fires and to assess changes in…Publication Date 2007
- savanna
- fire season
- fire regime
- fire frequency
- wetland
- southern Africa
- fire
- fire ecology
- Africa
- Library Collection RecordHerder knowledge of landscape classification and environmental assessments in East Africa has been poorly documented. This study investigated how the Maasai traditionally classified and assessed…Publication Date 2006
- land degradation
- Livestock grazing preference
- Maasai
- Traditional landscape classification
- traditional knowledge
- subsistence agriculture
- degradation
- grasslands
- grazing
- management
- pastoralism
- soils
- animal impact
- biodiversity
- forage quality
- animal nutrition
- animal production
- monitoring
- Africa
- Library Collection RecordScience is frequently touted as the solution to dryland management problems, yet most management decisions are, by necessity, based primarily on expert knowledge and experience. This paper describes…Publication Date 2006
- adaptive management
- ecological site descriptions
- natural resource management
- rangelands
- thresholds
- management
- decision support systems
- Africa
- Library Collection RecordThe objective of this paper is to examine the spatial variability of islands of enhanced hydrologic activity and its application to remediation of degraded arid and semi-arid ecosystems. Factors…Publication Date 2006
- Biotic productivity
- heterogeneity
- rangeland
- remediation
- runoff
- Water ponding dikes
- restoration ecology
- degradation
- vegetation dynamics
- ecosystem ecology
- Africa
- Library Collection RecordAeolian processes are tightly linked to soil and vegetation change in arid and semi-arid systems at multiple spatial and temporal scales. Wind influences patterns of vegetation and soil within the…Publication Date 2006
- Aeolian processes
- desertification
- Dust emission
- Landscape change
- wind erosion
- erosion
- landscape ecology
- soils
- climate
- ecosystem dynamics
- ecosystem ecology
- grasslands
- Africa
- Library Collection RecordOver 70% of South Africa is too arid for crop farming and is used for either commercial livestock ranching, communal livestock ranching, or game ranching. The inherently different management…Publication Date 2006
- Semi-arid rangeland
- pastoralism
- wildlife
- rangeland degradation
- Soil Condition
- Grazing gradients
- rangeland condition
- management
- piosphere
- grazing
- Africa
- Library Collection RecordEpidermal conductance (gmin) is water lost through the cuticle and stomata of plants when stomatal conductance is minimal. Low gmin may affect survival of perennial grasses by maintaining tissue…Publication Date 2006
- Cuticular transpiration
- Drought Resistance
- grasslands
- drought
- plant autecology
- Alien invasive species
- Africa
- Library Collection RecordThis paper provides an analysis of the physical and chemical characteristics of cyanobacterial soil crusts in the Molopo Basin, South Africa. It details the influence that soil type, livestock…Publication Date 2006
- cyanobacterial soil crusts
- Kalahari
- soil nutrients
- shrub encroachment
- Acacia mellifera
- soil classification
- livestock
- disturbance
- grasslands
- grazing
- Africa
- Library Collection RecordDegradation in semi-arid Karoo rangelands has been ascribed to over-utilization by livestock and variations in rainfall regime. The understanding of vegetation dynamics in confined plant-herbivore…Publication Date 2006
- African wild herbivore
- Herbivore exclosure
- plant functional type
- Protected area
- vegetation monitoring
- rangelands
- rangeland condition
- vegetation dynamics
- livestock
- grazing
- land use
- national parks
- rainfall
- monitoring
- Africa
- Library Collection RecordThis paper demonstrates the potential of hyperspectral remote sensing to predict the chemical composition (i.e., nitrogen, phosphorous, calcium, potassium, sodium, and magnesium) of three tree…Publication Date 2007
- hyperspectral
- chemical composition
- reflectance
- Derivative
- Continuum removal
- modelling
- remote sensing
- surface vegetation
- Africa
- Library Collection RecordThe concentration of foliar nitrogen in tropical grass is one of the factors that explain the distribution of wildlife. Therefore, the remote sensing of foliar nitrogen contributes to a better…Publication Date 2007
- nitrogen concentration
- red edge position
- Continuum removal
- bootstrapping
- chlorophyll absorption feature
- remote sensing
- management
- grasslands
- rangeland condition
- forage quality
- Africa
- Library Collection RecordThe paper presents results on the use of NOAA AVHRR data for desertification monitoring on a regional-global level. It is based on processing of the GIMMS 8 km global NDVI data set. Time series of…Publication Date 2008
- desertification
- land degradation
- NDVI
- remote sensing
- global drylands
- Africa
- Library Collection RecordWe evaluate the possible effects of climate change on vegetation in Central and West Africa. We chose two climate scenarios from the IPCC Third Assessment Report, ECHAM3 with scenario B2 and HADCM3…Publication Date 2008
- vegetation model
- climate change
- Central and West Africa
- modelling
- global warming
- Africa
- Library Collection RecordThe main objective of this paper is to provide researchers that investigate fossil phytolith assemblages and model/data comparisons a new tool for estimating C3/C4 grass composition over time. We…Publication Date 2008
- phytolith
- paleovegetation
- C3
- C4
- grass
- woodland
- East Africa
- Africa
- Library Collection RecordFragmentation of the ecosystems of the earth into spatially isolated units has emerged as a primary component of global change. Often, fragmentation results from actions that are intended to enhance…Publication Date 2008
- fragmentation
- rangelands
- adaptation
- public policy
- Economic Aspects
- policies
- management
- land use
- Africa
- Library Collection RecordThe rich biodiversity of southern Africa has to date been relatively unimpacted by the activities of modern society, but to what degree will this situation persist into the 21st century? We use a…Publication Date 2008
- biodiversity
- southern Africa
- climate change
- land use change
- Land cover change
- Habitat loss
- conservation
- Millennium ecosystem assessment
- image
- CBD target
- Africa
- Library Collection RecordThe model of a variable climate driving natural resource behaviour, use and management of rangelands in Sub-Saharan Africa has been well explored within the non-equilibrium ecology discourse. This…Publication Date 2007
- non-equilibrium
- ecology
- irrigation
- River basin management
- Tanzania
- variability
- water resources
- sustainability
- natural resources
- adaptive capacity
- rangelands
- management
- Africa
- Library Collection RecordHillslopes in central and western parts of KwaZulu-Natal, South Africa are often mantled by colluvial sediments of the Masotcheni Formation. These sediments have accreted in response to several…Publication Date 2008
- Climate control
- Landscape evolution
- optically stimulated luminescence dating
- Stable carbon isotope analysis
- Micromorphology
- Masotcheni Formation
- palaeobotany
- palaeoclimate
- Africa
- Library Collection RecordAs part of an investigation of land degradation in the South African Karoo, three types of fine sediment signatures (radionuclides, mineral magnetism and sediment geochemistry) were used to trace the…Publication Date 2007
- Sediment fingerprinting
- South African Karoo
- Erosion history
- Extreme events
- 137Cs and 210Pb
- land use
- soils
- management
- grazing
- fire
- livestock
- Africa
- Library Collection RecordLocalised patterns of erosion and deposition in vegetated semi-arid rangelands have been shown to influence ecological change and biogeochemical cycles. In the flat, vegetated Kalahari rangelands of…Publication Date 2007
- cyanobacterial soil crusts
- Erodibility
- surface roughness
- Cohesivity
- Kalahari
- erosion
- rangeland condition
- ecosystem dynamics
- soil crusts
- grazing
- Africa
- Library Collection RecordTraditional vegetative techniques to control gully development rely mainly on the effects of above ground biomass, whereas little attention has been given to the role of below ground biomass. Yet, in…Publication Date 2006
- roots
- grass
- Concentrated flow erosion
- Rill
- Gully
- Erodibility
- soil erosion
- rangelands
- hydrology
- modelling
- Africa
- Library Collection RecordDifferent types of vegetation found in local environments are of value to rural livelihoods of many African households. However, the dominant way of expressing this value, which is mainly through…Publication Date 2008
- Resource value
- Livelihoods
- Africa
- Economic valuation
- institutions
- traditional knowledge
- socio-economic aspects
- subsistence agriculture
- policies
- Africa
- Library Collection RecordTransfrontier conservation has taken Southern Africa by storm, where the modus operandi remains simple and intuitive: by dissolving boundaries, local benefits grow as conservation and development…Publication Date 2008
- Transfrontier conservation
- Neoliberalism
- Community-based natural resources management
- Livelihoods
- South Africa
- transfrontier parks
- conservation
- socio-economic aspects
- eco-tourism
- decision support systems
- economics
- policies
- land use
- Africa
- Library Collection RecordThe idealization of natural landscapes and peoples during colonialism, coupled with the popularity of sustainable development in the postcolonial era, has contributed to the expansion of conservation…Publication Date 2007
- South Africa
- Mahushe Shongwe Game Reserve
- conservation
- Community conservation
- Livelihood
- development
- national parks
- socio-economic aspects
- economics
- conservation agriculture
- rural areas
- Africa
- Library Collection RecordSouth Africa is unique in that its globally significant biodiversity, which is under significant threat, coexists with an apartheid history of dispossession that produced a starkly unequal land…Publication Date 2006
- conservation
- Biodiversity economy
- Land rights
- Farm dwellers
- South Africa
- Baviaanskloof
- socio-economic aspects
- legislation
- Poverty
- rural areas
- policies
- ecotourism
- Africa
- Library Collection RecordLand use change and livelihood systems are often analyzed separately or with one "driving "the other. This "driver-feedback "relationship has been buttressed by approaches to…Publication Date 2006
- land use
- Livelihoods
- Co-production
- South Africa
- Ghana
- Drivers of change
- socio-economic aspects
- 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 RecordIndigenous forests and savannas, along with plantation forests, offer numerous benefits to rural communities and society at large. Yet, the role of forests and forestry in contributing to sustainable…Publication Date 2007
- ecotourism
- forestry
- Non-timber forest products
- Plantations
- Poverty
- Safety-net
- savannas
- South Africa
- sustainable livelihoods
- socio-economic aspects
- savanna
- sustainability
- subsistence agriculture
- 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 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 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 RecordSouth Africa is poorly endowed with natural forests, and is heavily dependent on plantations of exotic forestry species to meet its timber needs. The first forest plantations of exotic trees were…Publication Date 2007
- forest plantations
- Hydrological impacts
- legislation
- Licensing
- South Africa
- hydrology
- land use
- monitoring
- decision support systems
- Africa
- Library Collection RecordNo abstract availablePublication Date 2006
- Wildfire risk classification
- Vegetation fire management legislation
- fire
- management
- legislation
- Africa
- Library Collection RecordElevated levels of nitrate in streamwaters draining forested catchments in the eastern escarpment area of South Africa are thought to occur as a result of land use change from natural high altitude…Publication Date 2006
- Nitrogen mineralisation
- nitrification
- nitrogen fixation
- nitrate leaching
- forest soils
- land use
- degradation
- grasslands
- pollution
- nutrient loads
- Soil Condition
- Africa
- Library Collection RecordIdentification of the factors that determine the variation in browse quality, as determined by their chemical composition, is an important step towards understanding herbivore distribution patterns.…Publication Date 2006
- nitrogen
- phosphorus
- Condensed tannin
- Polyphenol
- Colophospermum mopane
- fire
- savanna
- foliage
- Ecosystem drivers
- forage quality
- diet selection
- soils
- Africa
- Library Collection RecordRemote sensing has successfully been applied to map the distribution of canopy dominating invasive species. Many invaders however, do not dominate the canopy, and remote sensing has so far not been…Publication Date 2006
- remote sensing
- GIS
- Chromolaena odorata
- seed production
- light intensity
- invasive species
- mapping
- Alien invasive species
- Landsat images
- grazing
- biological control
- Africa
- Library Collection RecordThis study reviewed the distribution of ten common savanna trees in Namibia. Tree distributions were investigated in relation to bioclimatic, topographic and edaphic variables at a national scale.…Publication Date 2006
- biogeography
- climate change
- forestry
- Plant functional attributes
- southern Africa
- Vegetation history
- Africa
- Library Collection RecordReconstructions of African palaeoenvironments are essential for a full understanding of early hominin evolution, but they are often hampered by low-resolution or discontinuous climatic data. Here we…Publication Date 2007
- stable isotopes
- flowstone
- South Africa
- Homo
- savannahs
- Precession
- palaeoclimate
- palaeoenvironmental data
- Africa
- Library Collection RecordLand use intensification on shrinking forage resources characterizes many livestock producing communities. Remotely sensed images can show land cover change, but how household decision making is…Publication Date 2007
- Land cover
- Landsat GeoCover
- change detection
- Image differencing
- NDVI
- Africa
- Library Collection RecordThis paper traces the history of grazing policy, its conceptual basis, practical implementations and outcomes, in three southern African countries. In spite of the divergent environmental conditions…Publication Date 2006
- pastoralism
- Communal land
- rangeland management
- rangeland ecology
- policies
- grazing
- communal farming
- rangelands
- management
- Sustainable development
- Africa
- Library Collection RecordThe impact of the herbicide concentration (0.10-10[punctuation space]000 [mu]g kg-1) and addition of organic and inorganic nutrients on mecoprop, 2,4-D and 2,4,5-T mineralization in aquifer and soil…Publication Date 2007
- Phenoxyalkanoic acid herbicides
- Biostimulation
- Natural attenuation
- Groundwater aquifer
- herbicides
- soils
- Africa
- Library Collection RecordClimate change factors interact to modify plant growth and development. The objective of this study was to evaluate the response to temperature of big bluestem (Andropogon gerardii Vitman)…Publication Date 2007
- big bluestem
- biomass
- development
- Growth Rates
- Partitioning
- Seed number
- climate change
- temperature
- plant autecology
- plant production
- carbon dioxide
- 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 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 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
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