Rangeland Ecology & Management
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- Library Collection RecordThe ecology of clonal species has rarely been studied in savannas. Dichrostachys cinerea, a common invasive shrub in southern African savannas, forms root suckers. This paper examines the effect of…Publication Date 2007
- Alien invasive species
- plant autecology
- grasslands
- Africa
- Library Collection RecordThe use of fire in the management of grassland is a common rangeland practice in South Africa. This portends ecological implication for the sustainability of the savannah rangelands as a system. A…Publication Date 2008
- fire ecology
- management
- savanna
- grasslands
- rangelands
- Soil Condition
- plant production
- Africa
- Library Collection RecordWe introduce the five rangeland types found in the arid and semiarid regions of South Africa, namely Arid Savanna, Arid Grassland, Nama-karoo, Succulent Karoo, and Thicket, and describe the important…Publication Date 2006
- rangelands
- savanna
- livestock
- grazing
- management
- commercial agriculture
- subsistence agriculture
- Sustainable development
- Africa
- Library Collection RecordAbstract Question: Do anthropogenic activities facilitate the distribution of exotic plants along steep altitudinal gradients? Location: Sani Pass road, Grassland biome, South Africa. Methods: On…Publication Date 2008
- Alien
- dispersal
- disturbance
- Gradient analysis
- grasslands
- Multivariate
- spatial analysis
- transect
- Germishuizen & Meyer (2003)
- Alien invasive species
- rehabilitation
- restoration ecology
- management
- biodiversity
- seed banks
- vegetation dynamics
- Africa
- Library Collection RecordTransformation of indigenous vegetation for production purposes impacts negatively on biodiversity but does this necessarily equate with a decrease in phytomass accumulation, which may influence…Publication Date 2008
- grasslands
- plant production
- carbon sequestration
- land use
- management
- conservation
- agriculture
- pasture management
- biodiversity
- Africa
- Library Collection RecordAssessing plant nutrient limitation is a fundamental part of understanding grassland dynamics. The ratio of concentrations of nitrogen (N) and phosphorus (P) in vegetation has been proposed as an…Publication Date 2008
- co-limitation
- ecosystem management
- grasslands
- Kruger National Park
- nitrogen (N)
- phosphorus (P)
- stoichiometry
- soils
- Plant Productivity
- Africa
- Library Collection RecordSummary * 1Grasses using the C4 photosynthetic pathway dominate today's savanna ecosystems and account for ~20% of terrestrial carbon fixation. However, this dominant status was reached only…Publication Date 2008
- atmospheric CO2
- C4 plants
- climate change
- fire
- grasslands
- grazing
- Poaceae
- rainfall
- savanna
- seasonality
- carbon dioxide
- palaeoclimate
- palaeobotany
- Africa
- Library Collection Record1. Gradients of animal impact known as piospheres tend to develop around artificial watering points, particularly in arid zones. Such grazing gradients represent a potential opportunity for…Publication Date 2006
- animal impact
- piosphere
- watering points
- livestock
- species richness
- ecosystem ecology
- rangelands
- grazing
- management
- disturbance
- stocking rates
- Africa
- Library Collection RecordAbstract The paleoenvironmental context of plant and animal species evolution (including glacial migrations and population separations) is based on a very patchy and incomplete paleo-phytogeographic…Publication Date 2008
- Africa
- glacial–interglacial cycles
- grasslands
- human evolution
- phytogeography
- Pleistocene
- savannas
- tropical forests
- vegetation modeling
- palaeoemvironment
- Africa
- Library Collection RecordAbstract Anthropogenic perturbations have profoundly modified the Earth's biogeochemical cycles, the most prominent of these changes being manifested by global carbon (C) cycling. We…Publication Date 2007
- carbon sequestration
- 13C NMR
- deforestation
- land-use change
- NEXAFS
- organic matter composition
- Sr-FTIR-ATR
- synchrotron radiation
- land use
- grasslands
- vegetation dynamics
- carbon dynamics
- soil organic carbon
- agriculture
- Africa
- Library Collection RecordUsing new tools (boosted regression trees) in predictive biogeography, with extensive spatial 23 distribution data for >19 000 species, we developed predictive models for South African plant…Publication Date 2006
- modelling
- species richness
- ecosystem ecology
- Alien invasive species
- grasslands
- Africa
- Library Collection RecordThe relationship between above and belowground species composition has been researched in forests, grasslands, and wetlands to understand what mechanisms control community composition. I thoroughly…Publication Date 2007
- grasslands
- plant community ecology
- plant production
- plant autecology
- species richness
- seed banks
- management
- Africa
- Library Collection RecordSummary * 1Demographic processes, particularly the recruitment of seedlings, are critical to the long-term survival and re-establishment of plant populations. In many perennial grasslands successful…Publication Date 2008
- demography
- emergence
- full factorial experiment
- intraspecific competition
- irrigation
- recruitment limitation
- seed addition
- seedling survival
- semi-arid savanna
- Stipagrostis uniplumis
- grasslands
- fire ecology
- seeds
- ecosystem ecology
- vegetation dynamics
- germination
- Africa
- Library Collection RecordIn Kenya, lands surrounding wildlife protected areas (PAs), referred to as dispersal areas, have undergone widespread land use changes, but these have been little studied. This study investigated…Publication Date 2008
- conservation
- agriculture
- national parks
- land use
- grazing
- biodiversity
- disturbance
- rainfall
- Africa
- Library Collection RecordPatches of wooded vegetation in nutrient-poor grassland characteristically contain high soil moisture and nutrient availability compared with surrounding grassland. These 'islands of fertility…Publication Date 2007
- grasslands
- soil moisture
- soil nutrients
- soil fertility
- animal impact
- fire
- ecosystem ecology
- Africa
- Library Collection RecordFlood depth has been frequently used to explain the distribution of plant species in seasonally flooded grasslands, but its relation with vegetation production has remained ambiguous. The…Publication Date 2007
- grasslands
- plant production
- hydrology
- plant autecology
- Africa
- Library Collection RecordThe morphometrics of mandible and teeth of mixed-breed goats on rangeland were analyzed to investigate the association between the oral apparatus and diet type. Canonical relationship between sets of…Publication Date 2007
- diet
- grazing
- Mandible
- Jaw
- Incisor
- Molar teeth
- goats
- rangelands
- diet selection
- forage quality
- foraging ecology
- Africa
- Library Collection RecordThe impacts of invasive alien plants (IAP) and their subsequent clearing by the Working for Water Programme (WfW) on (a) overstorey (woody plant) vegetation structure, (b) invasion intensity (…Publication Date 2008
- biological invasions
- Ecosystem repair
- grasslands
- Overstorey aerial cover
- restoration ecology
- savannas
- Africa
- Library Collection RecordSolanum mauritianum Scopoli (Solanaceae; 'bugweed') is a major weed of natural vegetation and plantations in the eastern higher rainfall regions of South Africa. This study assessed the…Publication Date 2008
- Ecosystem repair
- integrated control
- non-native species
- restoration ecology
- weed management
- Working for Water
- Alien invasive species
- ecosystem ecology
- hydrology
- grasslands
- savanna
- herbicides
- seed banks
- germination
- Africa
- Library Collection RecordNo abstract availablePublication Date 2008
- biodiversity
- grasslands
- Alien invasive species
- Africa
- Library Collection RecordNo abstract availablePublication Date 2008
- conservation
- management
- ecosystem dynamics
- grasslands
- Africa
- Library Collection RecordNo abstract availablePublication Date 2007
- grasslands
- urban environment
- rurla environment
- ecology
- Africa
- Library Collection RecordNo abstract availablePublication Date 2007
- grasslands
- ecosystem ecology
- Africa
- Library Collection RecordA vegetation survey of natural grasslands was undertaken in the urban areas of Gauteng, supporting about 20% of the country's population. Relevés were compiled in 132 sample plots placed in…Publication Date 2006
- grasslands
- South Africa
- vegetation
- Gauteng
- ecology
- Africa
- Library Collection RecordDegradation in arid and semi-arid regions can be ascribed primarily to environmental conditions such as extreme changes in temperature and erratic rainfall patterns. Seed germination and seedling…Publication Date 2006
- Drought Stress
- polyethylene glycol (PEG)
- restoration
- rangelands
- seeds
- germination
- grasslands
- rainfall
- climate
- drought
- plant autecology
- restoration ecology
- Africa
- Library Collection RecordThe aim of the study was to identify and classify the woodlands, bushland and grasslands of the Umkhanyakude Integrated Sustainable Rural Development Node (also known as Maputaland) into homogenous…Publication Date 2006
- plant ecology
- Maputaland
- multivariate analysis
- Phytosociology
- grasslands
- monitoring
- data analysis
- landscape ecology
- vegetation dynamics
- Africa
- Library Collection RecordComplementary resource use is regarded as a mechanism that contributes to positive relationships between biodiversity and ecosystem functioning. Here, we used a biodiversity experiment composed of…Publication Date 2008
- Arrhenatherum elatius
- Biodiversity effects
- Complementarity
- Light competition
- The Jena Experiment
- Vertical structure
- species richness
- biodiversity
- ecosystem ecology
- grasses
- grasslands
- Africa
- Library Collection RecordThe tree-grass interactions of African savannas are mainly determined by varying rainfall patterns and soil fertility. Large savanna trees are known to modify soil nutrient conditions, but whether…Publication Date 2007
- canopy
- Fibre content
- Grass structure
- grazing
- nitrogen
- phosphorus
- savanna
- rainfall
- soil fertility
- plant production
- nutrition
- soil organic carbon
- biomass
- forage quality
- Africa
- Library Collection RecordThe coexistence of woody and grassy plants in savannas has often been attributed to a rooting-niche separation (two-layer hypothesis). Water was assumed to be the limiting resource for both growth…Publication Date 2006
- fire
- grazing
- Honeycomb rippling model
- Inter-tree competition
- Spatio-temporal rainfall variation
- Tree-grass coexistence
- savanna
- indigenous encroaching species
- grasslands
- soil moisture
- rainfall
- vegetation dynamics
- Africa
- Library Collection RecordSummary In this paper, we present a method to estimate the additional costs made by nature reserve managers to mitigate the effects of atmospheric deposition. Theoretically, these extra costs may be…Publication Date 2007
- Nature target types
- Management costs
- Deposition scenarios
- grasslands
- Reed and rough land
- Heathland
- forests
- Moorland pools
- conservation
- vegetation dynamics
- Economic Aspects
- greenhouse gases
- Africa
- Library Collection RecordSummary Vegetation indices generated from remotely sensed data have been widely used to estimate biophysical characteristics of natural vegetation and agricultural crops like aboveground productivity…Publication Date 2007
- grasslands
- surface water
- Spectral response
- vegetation indices
- Emerged biomass
- Africa
- Library Collection RecordThe emergence of C4 grass biomes is believed to have first taken place in the upper Miocene, when a series of events modified global climate with long-lasting impacts on continental biotas. Changes…Publication Date 2007
- Miocene
- Pliocene
- Paleosols
- Tooth enamel
- Ratite eggshell
- grasslands
- palaeobotany
- palaeoclimate
- Africa
- Library Collection RecordThe environmental contexts of the karstic hominin sites in South Africa have been established largely by means of faunal associations; taken together these data suggest a trend from relatively closed…Publication Date 2007
- Environmental change
- grasslands
- [delta]13C
- Fossil enamel
- Plio-Pleistocene
- South Africa
- palaeobotany
- Africa
- Library Collection RecordThis paper reports an assessment of the current and potential impacts of invasive alien plants on selected ecosystem services in South Africa. We used data on the current and potential future…Publication Date 2008
- biodiversity
- Fynbos
- grassland
- grazing
- groundwater
- hydrology
- Karoo
- savanna
- water yield
- Alien invasive species
- ecosystem services
- Africa
- Library Collection RecordWe tested the scaling effects of proximate desertification drivers (i.e. soil erosion, bush encroachment and grazing pressure) on soil nutrients in northeastern Tanzania. We analyzed nutrient…Publication Date 2008
- Desertified landscapes
- Dysfunctional landscapes
- Proximate desertification drivers
- soil nutrients
- Tanzaniadesertification
- erosion
- grazing
- indigenous encroaching species
- desertification
- landscape ecology
- Africa
- Library Collection RecordNo abstract availablePublication Date 2007
- agriculture
- soils
- Soil Condition
- grazing
- rangeland condition
- ecosystem dynamics
- Africa
- Library Collection RecordThe ability to produce vegetative shoots is a form of persistence in arid and semiarid savannas allowing trees to survive herbivory, fire and cutting. In terms of growth rates and survival, this form…Publication Date 2008
- browsing
- coppice
- Exclosure
- grazing
- Resprouting
- restoration
- Savanna woodland
- Africa
- Library Collection RecordChanges in species richness and vegetation composition in the diverse semi-arid Succulent Karoo vegetation of South Africa were investigated after 67 (1937-2004) years of rest from livestock grazing…Publication Date 2008
- diversity
- Growth Form
- ordination
- species richness
- succession
- Termitaria
- grazing
- vegetation dynamics
- ecology
- insects
- degradation
- restoration ecology
- Africa
- Library Collection RecordThis paper provides values for nitrogen isotopic abundances of southern African soils and plants along land use gradients of varying aridity. The ?15N values of soils and plants were generally higher…Publication Date 2008
- grasses
- grazing
- mineralization
- nitrification
- savanna
- trees
- soils
- grazing
- Africa
- Library Collection RecordThe Kalahari sand sheet, with a 2.5-million ha area, is probably the largest continuous surface of sand in the world. The Kalahari Transect (KT) is one of a set of IGBP 'megatransects '…Publication Date 2007
- biogeochemistry
- Hydraulic properties
- Kalahari transect
- Sand deposits
- stable isotopes
- ecosystem dynamics
- vegetation dynamics
- soil organic carbon
- Soil Condition
- soil nutrients
- rainfall
- grasslands
- Africa
- Library Collection RecordModels predict that desertification, the loss of perennial grasses in arid and semiarid environments, will be difficult to reverse due to the positive feedback between plant cover and water…Publication Date 2007
- arid grassland
- grazing
- hoof action
- perennial grass
- resilience
- restoration
- woody encroachment
- soils
- desertirfication
- models
- Africa
- Library Collection RecordThe impact of long-term high grazing pressure on geomorphological features, plant community composition and cover and soil characteristics of an ephemeral river system in Namaqualand, South Africa,…Publication Date 2007
- Animal-plant interactions
- Landscape patches
- livestock impacts
- Namaqualand
- Resource control
- riparian vegetation
- grazing
- soils
- degradation
- Plant Productivity
- Africa
- Library Collection RecordIn Namaqualand, heavy grazing of low-lying areas has resulted in the reduction of palatable perennial shrubs and the dominance of the unpalatable shrub, Galenia africana. This study investigates the…Publication Date 2007
- Succulent karoo
- Namaqualand
- Vegetation Change
- rehabilitation
- microhabitats
- grazing
- seeds
- restoration ecology
- vegetation dynamics
- Africa
- Library Collection RecordA national-level land degradation risk monitoring system identified an important grazing area in central northern Namibia as an area at risk of environmental change. A time series analysis of primary…Publication Date 2007
- semi-arid
- local knowledge
- rainfall variability
- water supply
- grazing
- land management
- degradation
- data analysis
- grasslands
- livestock
- rainfall
- participatory rural appraisal
- decision support systems
- management
- traditional knowledge
- 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 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 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