Rangeland Ecology & Management
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Displaying 51 - 100 of 169 results
- Library Collection RecordQuestions: What are the patterns of remotely sensed vegetation phenology, including their inter-annual variability, across South Africa? What are the phenological attributes that contribute most to…Publication Date 2011
- Phytosociology
- AVHRR
- Biomes
- NDVI
- net primary production
- phenology
- Regression tree
- vegetation mapping
- mapping
- remote sensing
- plant production
- rainfall
- diversity
- South Africa
- Library Collection RecordThe Mediterranean climate regions of Western Australia and South Africa are recognized as global hot spots of diversity. Both are threatened by climate changes that are projected to have significant…Publication Date 2010
- approach
- biodiversity
- guideline
- monitoring
- climate change
- rainfall
- South Africa
- Western Australia
- Library Collection RecordIncreasing evidence shows that anthropogenic climate change is affecting biodiversity. Reducing or stabilizing greenhouse gas emissions may slow global warming, but past emissions will continue to…Publication Date 2010
- biodiversity hotspot
- climate change risk assessment
- Mediterranean type ecosystem
- species distribution modelling
- modelling
- climate change
- biodiversity
- greenhouse gases
- conservation
- rainfall
- South Africa
- Library Collection Record1. Scaling theory predicts that organisms respond to different scales of resource patchiness in relation to their own size. We tested the hypothesis that the scale of nutrient patchiness mediates…Publication Date 2011
- savanna
- grassland
- ecosystem ecology
- soil nutrients
- fertiliser
- rainfall
- determinants of plant community diversity and structure
- Herbaceous
- heterogeneity
- mopane
- nitrogen
- phosphorous
- soil fertility
- water availability
- woodland
- Klaserie Private Nature Reserve
- South Africa
- Library Collection Record1. Ecologists debate the importance of neutral versus niche-based explanations for patterns of species coexistence and whether small-scale data can inform ecological understanding of communities,…Publication Date 2011
- community analysis
- ecosystem ecology
- rainfall
- soil nutrients
- modelling
- abiotic gradients
- community assembly theory
- environmental filters
- grass phylogeny
- K-statistic
- plant population and community dynamics
- plant species richness
- species coexistence
- structural equation modelling
- trait dispersion
- Tanzania
- Africa
- Library Collection Record1. Grazing lawns are short grassland areas where intense grazing maintains grass in an early growth stage. These areas represent a source of high-quality forage for herbivores. However, as herbivores…Publication Date 2010
- grazing
- grasslands
- management
- plant production
- savanna
- vegetation dynamics
- climatic variability
- continuous stocking
- grazing systems
- intensively managed grasslands
- large herbivores
- primary production
- rainfall
- white rhino
- South Africa
- Library Collection Record1. Up to 73% of the world s rangelands are degraded, and increasing demand for meat in developing countries and a growing human population are likely to exert even greater pressures on rangelands in…Publication Date 2010
- restoration ecology
- stocking rates
- grazing
- rangelands
- rainfall
- management
- ecosystem ecology
- vegetation dynamics
- South Africa
- Library Collection RecordAbstract Carbon sequestration programs, including afforestation and reforestation, are gaining attention globally and will alter many ecosystem processes, including water yield. Some previous…Publication Date 2005
- afforestation
- land-use change
- plantation
- runoff
- water yield
- carbon sequestration
- ecosystem dynamics
- modelling
- grasslands
- rainfall
- hydrology
- Africa
- Library Collection RecordSummary This paper presents a description of the temporal and spatial distribution of rainfall within the Serengeti Ecosystem, Tanzania. Ecosystem and Regional patterns are discussed with respect to…Publication Date 1975
- rainfall
- ecosystem dynamics
- ecosystem ecology
- vegetation dynamics
- Africa
- Library Collection RecordEuclea divinorum, a fast establishing, unpalatable, and fire resistant bush is considered an invasive species in some parts of its range. In Ol Pejeta Conservancy (OPC), Kenya, E. divinorum bushes…Publication Date 2013
- Acacia drepanolobium
- encroachment
- Euclea divinorum
- grassland
- invasion
- seedlings
- indigenous encroaching species
- grasslands
- rainfall
- ecosystem ecology
- Kenya
- Africa
- Library Collection RecordHerbivores influence the structure and composition of terrestrial plant communities. However, responses of plant communities to herbivory are variable and depend on environmental conditions,…Publication Date 2013
- abiotic gradients
- community structure
- exclosure experiment
- herbivory
- livestock-wildlife interactions
- plant species richness
- plant-herbivore interactions
- wildlife decline
- ecosystem ecology
- vegetation dynamics
- soils
- rainfall
- biodiversity
- East Africa
- Library Collection RecordBackground: Numerous Cape Floristic Region (CFR) clades are found in the Afromontane region of Africa, causing speculation on the source of their distribution. The southern Escarpment has been…Publication Date 2011
- data analysis
- montane grasslands
- ecosystem ecology
- palaeobotany
- climate change
- rainfall
- South Africa
- Library Collection RecordBotanical data were collected for the period 1970 to 1985 from the experimental farm unit at Massakloutjie in the Kalahari duneveld of the north?western Cape Province (Veld type no. 16a4, Acocks,…Publication Date 1987
- rainfall
- basal cover
- botanical composition
- stocking rate
- Net Income
- Africa
- Library Collection RecordWind erosion is a major contributor to desertification in the Sahel. Although three effective countermeasures for wind erosion (i.e. ridging, mulching with post-harvest crop residue, and windbreaks)…Publication Date 2011
- erosion
- desertification
- Sahel
- desert grasslands
- management
- soil fertility
- agriculture
- rainfall
- Soil Condition
- Sahel
- West Africa
- Library Collection RecordHerbaceous and woody alien plants visible from a moving vehicle were recorded along 1 km roadside transects at 5 km intervals over a distance of 5869 km in the semi-arid and arid Fynbos, Succulent…Publication Date 1998
- Alien invasive species
- rainfall
- ecosystem ecology
- soil classification
- land use
- savanna
- grasslands
- biodiversity
- Phytosociology
- Africa
- Library Collection RecordSummary * 1The influence of botanical composition on annual phytomass production of a semi-arid grassland in response to precipitation was tested with a 19-year experiment. Three compositional states…Publication Date 2001
- basal cover
- biodiversity
- plant production
- precipitation-use efficiency
- rainfall
- grasslands
- rangeland condition
- modelling
- runoff
- Africa
- Library Collection RecordIn this study, we present a stochastic landscape modeling approach that has the power to transfer and integrate existing information on vegetation dynamics and hydrological processes from the small…Publication Date 2009
- modelling
- vegetation dynamics
- landscape ecology
- hydrology
- commercial agriculture
- subsistence agriculture
- grazing
- plant production
- runoff
- drought
- rainfall
- management
- Namibia
- Africa
- Library Collection RecordLivelihood security in Eastern and Southern Africa is strongly dependent on rainfall distribution and land management practices among smallholder farmers. Over 95 % of the land used for food…Publication Date 2000
- rainfall
- land use
- management
- subsistence agriculture
- hydrology
- runoff
- Africa
- Library Collection RecordIn many South African catchments, water is an increasingly limited and highly fluctuating resource. Accurate prediction of low flows is especially vital if water resource managers are to successfully…Publication Date 2003
- streamflow
- IHACRES
- land-use
- Rainfall-runoff model
- South Africa
- hydrology
- modelling
- rainfall
- decision support systems
- ecosystem ecology
- Africa
- Library Collection RecordAn overview is given of pasture evaluation and improvement of existing germplasm in South Africa. The literature is reviewed from the perspective of upgrading the natural vegetation, reclamation of…Publication Date 1997
- Pasture evaluation
- intake
- Supplementation
- nutritive value
- pasture management
- rehabilitation
- erosion
- forage quality
- grazing
- Forage Quantity
- drought
- irrigation
- rainfall
- Africa
- Library Collection RecordAssessing the impacts of climatic and, in particular, land use changes on rates of soil erosion by water is the objective of many national and international research projects. However, over the last…Publication Date 2003
- gully erosion
- climate change
- land use change
- sediment yield
- techniques
- thresholds
- Flow hydraulics
- rainfall
- topography
- soils
- infiltration
- drainage
- models
- erosion control
- connectivity
- land use
- erosion
- runoff
- Africa
- Library Collection RecordWays of [`]tracking' environmental fluctuations could be of value in limiting drought-induced mortality and increasing output. We examined a range of tracking policies, designed to tackle…Publication Date 1998
- management
- drought
- rainfall
- animal production
- Economic Aspects
- stocking rates
- subsistence agriculture
- pastoralism
- 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 RecordClimate-change induced alterations in the global distribution of cool season (C3) and warm season (C4) grasses would impact the global carbon cycle and have differing, local effects on range and…Publication Date 2003
- C3 and C4 grass distribution
- Global climatic change
- Seasonal water availability
- water use efficiency
- climate change
- temperature
- vegetation dynamics
- rainfall
- Africa
- Library Collection RecordThe Universal Soil Loss Equation (USLE) was used to predict soil erosion hazard in the Upper Ewaso Ng'iro North basin of Kenya using data from erosion plots and reconnaissance surveys. The R-…Publication Date 2000
- soil erosion hazard assessment
- USLE
- GIS
- Kenya
- Upper Ewaso Ng'iro basin
- erosion
- rainfall
- conservation
- mapping
- hazard assessment
- 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 RecordGrass cover distribution in the northern section of the Namib-Naukluft Park inNamibia was estimated following the rain seasons of 1989, 1990 and 1991. High cover of grass occurred particularly in the…Publication Date 1995
- herbivore distribution
- Namib Desert
- patch dynamics
- primary production
- rangeland management
- Topographic Features
- grasslands
- national parks
- rainfall
- ecology
- management
- Africa
- Library Collection RecordBiomass production of different ecotypes within three ecological importantgrass species was determined during cultivation under uniform environmental conditions. Results obtained clearly indicate…Publication Date 1995
- adaptability
- ecotypic variation
- leaf biomass
- Poaceae
- semi-aridgrasslands
- grasslands
- plant autecology
- biomass
- rainfall
- plant production
- vegetation dynamics
- rangeland condition
- Africa
- Library Collection RecordThis paper describes the development of a model for estimating herbage production from rainfall and evapotranspiration in rangelands and its calibration using a vegetation cover index derived from…Publication Date 1995
- rangelands
- modelling
- herbage production
- grazing
- land degradation
- degradation
- plant production
- rainfall
- remote sensing
- rangeland condition
- 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 RecordLand deterioration does not occur uniformly over time or over a landscape. The differential use of preferred areas in the landscape results in uneven distribution of animal impact, and periods of…Publication Date 2004
- basal area
- continuous grazing
- patch overgrazing
- patch selection
- rotational grazing
- spatial heterogeneity
- species composition
- degradation
- animal impact
- rainfall
- grazing
- drought
- rangeland condition
- rangelands
- plant production
- Africa
- Library Collection RecordBare patches are found throughout the Nama Karoo. The development of bare patches is a degradation process that can be attributed to poor grazing practices such as overgrazing and patch selection,…Publication Date 2004
- Bare patch
- restoration
- cultivation
- introduced species
- restoration ecology
- degradation
- drought
- rainfall
- seeds
- Economic Aspects
- Africa
- Library Collection RecordDistribution patterns were examined at both regional and local scales for an entire species assemblage of dung beetles (Coleoptera: Scarabaeidae: Scarabaeinae) from the margins of the semi-arid Nama…Publication Date 2004
- Assemblage
- Dune
- dung
- Edge
- Kalahari
- Karoo
- Local
- range
- dung beetles
- rainfall
- ecosystem ecology
- Africa
- Library Collection RecordThere is an increasing need for data on land-cover changes at broad spatial .scales. In this study, a remote sensing-based technique for land-cover-change analysis was applied to the African…Publication Date 1997
- remote sensing
- rainfall
- climate
- ecosystem dynamics
- Africa
- Library Collection RecordSavanna ecosystems are water limited and responsive to rainfall on short time scales, characteristics that can be exploited to estimate fractional cover of trees, grass, and bare soil over large-…Publication Date 2002
- savanna
- ecosystem ecology
- rainfall
- remote sensing
- NDVI values
- soils
- Africa
- Library Collection RecordInformation from the literature about forage conservation losses in the field has been reviewed, contrasted and analysed in the categories respiratory loss, leaching loss and mechanical loss. An…Publication Date 1989
- forage quality
- conservation
- agriculture
- modelling
- temperature
- rainfall
- Africa
- Library Collection RecordSr and Ba levels of two proximal aragonite speleothems from Cold Air Cave, South Africa, are examined at [mu]m resolution. A compositional map derived from parallel secondary ion mass spectrometry…Publication Date 2003
- South Africa
- Cold Air Cave
- Speleothem
- SIMS
- ion probe
- palaeoenvironments
- palaeobotany
- rainfall
- Africa
- Library Collection RecordThe number of tsessebes in Kruger National Park, South Africa, increased during 1977-1985, but declined after 1986. We used tsessebe number and age structure to determine year-to-year variation in…Publication Date 2004
- drought
- population dynamics
- Population model
- rainfall
- plant production
- modelling
- tsessebe
- wildlife
- vegetation dynamics
- 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 RecordSouthern African savannas are mixed plant communities where C3 trees co-exist with C4 grasses. Here foliar ?15N and ?13C were used as indicators of nitrogen uptake and of water use efficiency to…Publication Date 2010
- stable isotopes
- soil nitrogen
- soil carbon
- aridity
- C3 plants
- C4 plants
- savanna
- Soil Condition
- grasslands
- water use efficiency
- rainfall
- plant autecology
- palaeobotany
- Africa
- Library Collection RecordEnumeration of carbon stocks at benchmark sites is a necessary activity in assessing the potential carbon sequestration and possible generation of credits through restoration of intensively impacted…Publication Date 2011
- allometry
- basal area
- biomass
- carbon
- Lowveld
- savanna
- Mesophyllous
- Microphyllous
- rainfall gradient
- volume
- carbon sequestration
- restoration
- rainfall
- South Africa
- Library Collection RecordSubtropical thicket dominated by the leaf- and stem-succulent tree Potulacaria afra (spekboom) accumulates extraordinarily high amounts of soil organic carbon for a semi-arid ecosystem. This has been…Publication Date 2011
- carbon dioxide
- rainfall
- restoration
- Semi-arid ecosystem
- soil organic matter
- carbon sequestration
- climate change
- Eastern Cape Province
- South Africa
- Library Collection RecordRenosterveld is a grassy shrubland with a diverse understory of geophytes. Exceptional plant diversity and endemism, combined with considerable fragmentation due to transformation to cropland, make…Publication Date 2009
- ecosystem services
- rainfall simulation
- Renosterveld fragments
- transformation
- wind erosion
- endemic species
- conservation
- hydrology
- rainfall
- degradation
- management
- South Africa
- Library Collection RecordLeaf gas exchange characteristics play a key role in carbon sequestration and water balance from site to regional scales, yet show differences among plant species with alternative adaptations to the…Publication Date 2009
- Arid and semiarid environments
- CO2 assimilation
- Ecophysiological models
- Kalahari
- Leaf gas exchange
- stomatal conductance
- carbon dioxide
- carbon sequestration
- water use efficiency
- climate
- plant autecology
- rainfall
- Botswana
- Africa
- Library Collection RecordThere is a pressing need for an objective, repeatable, systematic and spatially explicit measure of land degradation. In northeastern South Africa (SA), there are large areas of the former homelands…Publication Date 2004
- land degradation
- NDVI values
- rangelands
- South Africa
- degradation
- land use
- remote sensing
- rainfall
- ecosystem ecology
- Africa
- Library Collection RecordThe role of the hydrological cycle in contributing to the livelihoods of rural communities is often said to be important, but clear evidence of this is rarely offered. Furthermore, where such aspects…Publication Date 2004
- Green water
- Blue water
- Rural livelihoods
- hydrological cycle
- land use change
- hydrology
- land use
- ecology
- rural areas
- rainfall
- runoff
- agriculture
- Africa
- Library Collection RecordIn arid and semi-arid areas, total evaporation is a major component of the hydrological cycle and seasonal water shortages and drought are common. In these areas, the role of land use and land use…Publication Date 2004
- Green water
- Blue water
- Hydrological model
- land use change
- land use
- management
- non-grazing resources
- rainfall
- hydrology
- modelling
- Africa
- Library Collection RecordThe semi-arid savannah environment (SASE) of sub-Saharan Africa are characterized by low erratic rainfall which result to high risk of droughts, intra-seasonal dry spells and frequent food insecurity…Publication Date 2003
- Rainwater harvesting
- River basin
- Fanya juu
- Fanya chini
- food production
- water scarcity
- rainfall
- land use
- subsistence agriculture
- Economic Aspects
- drought
- conservation
- hydrology
- management
- Africa
- Library Collection RecordBurnt daga structures in Iron Age villages serve as proxies for severe drought on the plateau of southern Africa. The distribution of burnt daga remains in two other rainfall areas, KwaZulu-Natal and…Publication Date 2010
- Burnt daga
- Cultural proxies for drought
- El Nino
- Iron age of south-eastern Africa
- palaeobotany
- palaeoclimate
- drought
- rainfall
- south-eastern 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