Rangeland Ecology & Management
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Displaying 101 - 150 of 318 results
- Library Collection RecordWe investigated a variety of habitat characteristics along a land-use gradient in an attempt to determine which factors may have influenced the population decline of redwing francolin, Francolinus…Publication Date 2001
- grasslands
- grazing
- habitat
- redwing francolin
- pasture management
- birds
- ecology
- biodiversity
- fire
- Africa
- Library Collection RecordAbstract The effects of intensive commercial livestock farming on the distribution and habitat use of the redwing francolin, Francolinus levaillantii, was investigated to identify habitat constraints…Publication Date 2000
- grasslands
- habitat
- home range
- redwing francolin
- agriculture
- ecology
- management
- fire
- birds
- 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 RecordSummary * 1Seasonal rivers in semi-arid African savannas support riparian woodland and hydromorphic grassland, key habitats for wildlife or livestock. We investigated the effect of numerous, small,…Publication Date 2001
- Bush encroachment
- Combretum imberbe
- Faidherbia albida
- hydrology
- riparian
- grasslands
- drought
- grazing
- ecology
- Africa
- Library Collection RecordEffects of extreme livestock pressure on the abundance and distribution of a drought-deciduous shrub Sericocomopsis pallida, and effects of the shrub canopy on microclimate, soil fertility and grass…Publication Date 1989
- livestock
- ecology
- grasslands
- drought
- plant autecology
- plant production
- plant community ecology
- soils
- savanna
- soil nutrients
- Africa
- Library Collection RecordThe seasonal rate and extent of dry matter (DM) and neutral detergent fibre (NDF) degradation of the African sourveld grasses Alloteropsis semialata, Andropogon appendiculatus, Cynodon dactylon,…Publication Date 1995
- grasslands
- animal nutrition
- animal production
- plant autecology
- Africa
- Library Collection RecordThe effects of species composition and sward structure on the ingestive behaviour of cattle and sheep grazing a mesic, low quality grassland in South Africa were investigated over the 1990–93…Publication Date 1996
- diet selection
- cattle
- sheep
- grasslands
- grazing
- Africa
- Library Collection RecordThe community structure and abundance of plant-feeding nematodes were studied in four grasslands, which had not been fertilised for 6, 10, 23, and 28 years, respectively. We hypothesised that…Publication Date 2001
- body size
- Feeding strategy
- Food quality
- nematodes
- soil fertility
- succession
- grasslands
- fertilizer
- invertebrates
- ecosystem ecology
- soil nutrients
- Africa
- Library Collection RecordEstimates of the value of carbon sequestration services provided by a savanna ecosystem and of the value of water for the supply of a number of environmental goods and services are developed in a…Publication Date 2000
- carbon sequestration
- Marginal values
- Water value
- Ecological-economic modeling
- economics
- ecology
- modelling
- grasslands
- land use
- Africa
- Library Collection RecordMiombo woodlands are crucial to the livelihoods of rural people throughout southern, eastern and central Africa. This paper describes a dynamic simulation model of key ecological processes in miombo…Publication Date 2000
- management
- economics
- ecosytem ecology
- grazing
- fire
- grasslands
- carbon sequestration
- hydrology
- land use
- Africa
- Library Collection RecordMosaics of natural forest and grassland tracts in sub-Saharan Africa provide differences in woody species biodiversity. These mosaics are of considerable interest as they are a major biodiversity…Publication Date 2002
- biodiversity
- Shannon index
- tropical forest
- grassland
- burning
- spatial variability
- Uganda
- grasslands
- fire ecology
- management
- Africa
- Library Collection RecordAbstract not available.Publication Date 2001
- soil moisture
- vegetation
- ecohydrology
- stochastic processes
- hydrology
- water stress
- water balance
- savanna
- grasslands
- Crossing analysis
- Africa
- Library Collection RecordThis series of four papers studies the complex dynamics of water-controlled ecosystems from the hydro-ecological point of view [e.g., I. Rodriguez-Iturbe, Water Resour. Res. 36 (1) (2000) 3–9].…Publication Date 2001
- soil moisture
- vegetation
- ecohydrology
- stochastic processes
- hydrology
- water stress
- water balance
- savanna
- grasslands
- Crossing analysis
- Africa
- Library Collection RecordWe tested the potential of artificial neural networks (ANNs) as predictive tools in ecology. We compared the performance of ANNs and regression models (RM) in predicting ecosystems attributes, with…Publication Date 1997
- aboveground net primary production
- Artificial neural networks
- grasslands
- normalized difference vegetation index
- prediction
- Regression models
- remote sensing
- ecosystem ecology
- NDVI values
- Africa
- Library Collection RecordThat data from polar orbiting satellites have detected a widespread increase in photosynthetic activity over the last 20 years in the grasslands of the Sahel is justifies investigating its role in…Publication Date 2003
- Light Use Efficiency
- gross primary production
- grasslands
- NDVI
- Sahel
- Carbon cycle
- remote sensing
- plant production
- NDVI values
- modelling
- NOAA
- 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 RecordWe evaluated the effects of livestock grazing on C content of the plant-soil system (to 60 cm) of two semi-arid grasslands: a mixed-grass prairie (grazed 12 years), and a short-grass steppe (grazed…Publication Date 2002
- carbon
- C storage
- grasslands
- grazing
- Great Plains
- soil organic carbon
- stocking rates
- management
- Africa
- Library Collection RecordThe USA has about 336 Mha of grazing lands of which rangelands account for 48%. Changes in rangeland soil C can occur in response to a wide range of management and environmental factors. Grazing,…Publication Date 2002
- C sequestration
- rangelands
- grazing
- management
- organic carbon
- soil organic carbon
- fire
- fertilizer
- grasslands
- erosion
- Africa
- Library Collection RecordAcocks measured representative sites of good condition grassland in the 1940's that were re-sampled approximately 50 years later in order to compare the effect of commercial versus communal…Publication Date 2003
- grasslands
- land use
- commercial agriculture
- communal farming
- grazing
- forage quality
- vegetation dynamics
- Africa
- Library Collection RecordJohn Acocks' ideas on the recent and future changes of vegetation in South Africa occupy an important conceptual position in the first and subsequent editions of Veld Types of South Africa.…Publication Date 2003
- rangeland condition
- rangelands
- grasslands
- management
- agriculture
- degradation
- vegetation dynamics
- Africa
- Library Collection RecordThe influence of burning (head and back fire) on seedling recruitment and survival of different grass species in a semi-arid grassland were quantified over the 2000/01 to 2001/02 growing seasons. The…Publication Date 2004
- fire ecology
- seed banks
- seeds
- grasslands
- Soil Condition
- vegetation dynamics
- Africa
- Library Collection RecordDuring the dormant winter period the semi-arid grassland areas of South Africa are characterised by planned and unplanned fires, either by lightning or negligence by man. The influence of burning (…Publication Date 2005
- grasslands
- fire ecology
- seed banks
- seeds
- germination
- Africa
- Library Collection RecordChanges in litter production following back and head fires, some soil characteristics and root and litter turnover were quantified over two growing seasons for a semi-arid grassland. Sampling of…Publication Date 2005
- fire ecology
- grasslands
- Soil Condition
- soil moisture
- ecosystem ecology
- 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 RecordIt has long been recognized that alternative vegetation states may occur in terrestrial grazing systems. This phenomenon may be of great importance as small environmental fluctuations may lead to…Publication Date 1997
- vegetation dynamics
- grazing
- grasslands
- ecosystem ecology
- degradation
- Africa
- Library Collection RecordThe Tool for Exploratory Landscape Scenario Analyses (TELSA) is a spatially explicit model of vegetation succession, natural disturbances, and forest management activities. TELSA is a strategic…Publication Date 2000
- Landscape modeling
- Natural disturbances
- Vegetation succession
- Forest dynamics
- adaptive management
- modelling
- vegetation dynamics
- fire
- management
- grasslands
- 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 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 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 RecordOver the years a number of vegetation management systems has been evaluated and recommended. The Potch system is also a management system which was specifically developed for semi-arid regions where…Publication Date 1995
- grassland management
- ISPD model
- semi-arid
- vegetation condition improvement
- management
- vegetation dynamics
- rehabilitation
- grasslands
- agriculture
- Africa
- Library Collection RecordNo abstract availablePublication Date 1970
- grasslands
- ecology
- biodiversity
- southern Africa
- Library Collection RecordThe effects of burning a native grassland on soil organic matter status was investigated on a long-term (50 years) field experiment where different times and frequencies of burning were compared.…Publication Date 2003
- burning
- organic matter
- grassland
- nitrogen
- Light fraction
- microbial biomass
- fire ecology
- grasslands
- soils
- Africa
- Library Collection RecordTransitions from grassland to shrubland through woody plant encroachment result in potentially significant shifts in savanna ecosystem function. Given high resolution imagery, a textural index could…Publication Date 1998
- grasslands
- ecosystem dynamics
- indigenous encroaching species
- management
- mapping
- remote sensing
- Landsat images
- Africa
- Library Collection RecordMulti-proxy evidence from Sacred Lake on Mount Kenya, including pollen and compound-specific carbon isotope data, indicates grassland expansion at the Last Glacial Maximum (LGM, circa 18,000 14C…Publication Date 2000
- CO2
- East Africa
- fire
- grass cuticles
- grasslands
- Kenya
- palaeoecology
- sub-fossil
- Africa
- Library Collection RecordThe microfungi of an alkaline soil from an open-savannah in the Pretoria district of the Transvaal were surveyed using the dilution plate technique, the soil plate technique and a soil washing method…Publication Date 1974
- soils
- grasslands
- ecology
- 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 Kinangop highland grasslands, the world stronghold of the endangered Sharpe's longclaw (Macronyx sharpei), consist almost entirely of privately owned land. As human population in the…Publication Date 2002
- fragmentation
- human population
- Land subdivision
- Privately owned land
- land use
- management
- species richness
- grasslands
- birds
- 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 RecordFlight behaviours of 23 butterfly species were mapped to establish the effect of both pine afforestation and different-sized grassland linkages on localised butterfly movements. Blocks of pine trees…Publication Date 2001
- Lepidoptera
- Habitat webs
- Behaviour
- afforestation
- Linkages
- grasslands
- conservation
- insects
- 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 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 RecordSustainable agriculture requires the formation of new humus from the crops. We utilized 13C and 15N signatures of soil organic matter to assess how rapidly wheat/maize cropping contributed to the…Publication Date 2005
- 13C and 15N
- Duration of arable cropping
- Particle-size fractionation
- Alternating C3/C4 vegetation
- SOM turnover
- C model
- Roth-C Model
- Soil Condition
- plant production
- grasslands
- sustainability
- agriculture
- fertilizer
- Africa
- Library Collection RecordA thorough understanding of the role of microbes in C cycling in relation to fire is important for estimation of C emissions and for development of guidelines for sustainable management of dry…Publication Date 2004
- C isotopes
- C sequestration
- CO2 flux
- Dry and rainy season
- fire effects
- Microbial biomass C
- savanna
- Substrate-induced respiration
- carbon dioxide
- carbon dynamics
- fire
- management
- soils
- grasslands
- ecosystem ecology
- Africa
- Library Collection RecordAbstract Stipa tenacissima L. (alpha grass) steppes are one of the most representative ecosystems in arid Mediterranean ecosystems. On the one hand these steppes, which are perpetually exposed to…Publication Date 2014
- seed germination
- steppes
- Stipa tenacissima L.
- temperature
- water potential
- grasslands
- restoration ecology
- seeds
- gemination
- Northern Africa
- Library Collection RecordAbstract The knowledge of relative performance of plants across environmental gradients is critical for their effective management and for understanding future range expansion. Pennisetum setaceum is…Publication Date 2014
- Alien grass
- Ecological invasions
- competition
- disturbance
- Seedling translocation
- Transplant experiment
- Alien invasive species
- management
- grasslands
- savanna
- ecosystem ecology
- restoration ecology
- South Africa
- Library Collection RecordHere we describe the fine root distribution of trees and grasses relative to soil nitrogen and water profiles. The primary objective is to improve our understanding of edaphic processes influencing…Publication Date 2010
- nitrogen
- root biomass
- savanna
- Trees and grasses
- water
- [delta]13C
- [delta]15N
- soils
- grasslands
- ecology
- ecosystem dynamics
- soil nutrition
- Kruger National Park
- South Africa
- Library Collection RecordSouthern African grasslands harbour diverse plant communities, and recent studies have revealed remarkable plant-pollinator interactions in this biome. However, there has been no attempt to study…Publication Date 2009
- Breeding systems
- grassland vegetation
- Mutualistic networks
- Plant-pollinator interactions
- Pollination systems
- grasslands
- insects
- ecology
- birds
- disturbance
- southern Africa
- Library Collection RecordNo abstract availablePublication Date 2009
- grasslands
- restoration ecology
- KwaZulu-Natal
- South Africa
- Library Collection RecordNo abstract availablePublication Date 2009
- grasslands
- soil nutrients
- nutrition
- Highveld
- South Africa