Rangeland Ecology & Management
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- Library Collection RecordA pattern of seasonal mobility between the coast and the hinterland by Khoekhoe pastoralists in the south-western Cape of South Africa was documented at the time of European contact. Because the…Publication Date 2002
- pastoralism
- SEASONAL MOBILITY
- Africa
- oxygen
- CARBON AND STRONTIUM ISOTOPE RATIOS
- Tooth enamel
- Africa
- Library Collection RecordBotswana 039;s Kalahari rangelands have historically supported a diversity of wildlife and a number of subsistence livelihood activities, such as agropastoralism, hunting and gathering. Recently,…Publication Date 2003
- rangelands
- matsheng
- subsistence livelihoods
- sustainability
- community-based natural resource management
- economics
- animal production
- rangeland condition
- Africa
- Library Collection RecordBiomass burning is an important ecosystem process in southern Africa, with significant implications for regional and global atmospheric chemistry and biogeochemical cycles. In this paper,…Publication Date 2003
- Savanna fires
- southern Africa
- pyrogenic emissions
- Burned area
- Landsat
- Kalahari
- fire
- fire ecology
- carbon dioxide
- satellite imagery
- Africa
- Library Collection RecordFires in African savannas produce emissions contributing to changes in global biogeochemical processes. In the Southern African Regional Science Initiative (SAFARI-2000), fuels characteristics were…Publication Date 2003
- Kalahari
- biomass
- moisture content
- fire intensity
- rate of spread
- flame length
- emissions
- fire
- savanna
- grasslands
- greenhouse gases
- Africa
- Library Collection RecordCyanobacterial soil crusts may be important in arid and semi-arid ecosystems because of their ability to fix atmospheric nitrogen (N2). These crusts are very sensitive to trampling by animals, and…Publication Date 2003
- soil crusts
- N fixation
- Kalahari
- acetylene reduction
- isotopes
- savanna
- soils
- ecosystem ecology
- Africa
- Library Collection RecordA distinguishing, co-dominance feature of trees and grasses in Savannas was prominently explained by Walter. He hypothesized that water is the limiting factor and grasses are superior competitors for…Publication Date 2003
- trees
- grasses
- roots
- savanna
- isotopic
- carbon
- hydrology
- plant autecology
- ecology
- Africa
- Library Collection RecordWe examined relationships between vegetation and soil nutrients along rainfall and land use gradients in the Kalahari. Soil organic carbon (SOC) was significantly lower where reduced rainfall and…Publication Date 2003
- soil organic carbon
- soil organic nitrogen
- rainfall gradient
- land-use gradient
- Kalahari
- savanna
- Botswana
- soil nutrition
- rainfall
- grazing
- grasslands
- land use
- Africa
- Library Collection RecordThis is a keynote paper focusing on regional perspectives on agriculture and biodiversity by exploring the situation in Northern Africa, the West African Sahel, East Africa and the Horn, and Southern…Publication Date 2003
- agriculture
- biodiversity conservation
- disequilibrium theories
- environmental Kuznet's curve
- hotspots
- agroecological intensification
- agrodiversity
- organic farming
- agroforestry
- biodiversity
- economics
- soils
- livestock
- management
- land-use
- Africa
- Library Collection RecordThe effect of intensive grazing and browsing of domestic stock and wildlife on the number of species and abundance of vegetation was investigated in the Hoanib River catchment, north-western Namibia…Publication Date 2003
- vegetation impact
- Arid Environment
- intensive grazing
- ecosystem ecology
- vegetation dynamics
- grasslands
- grazing
- livestock
- wildlife
- land use
- drought
- Africa
- Library Collection RecordOveroptimistic stocking rates are the leading cause of rangeland degradation. The phenomenon of patch-selective grazing means that the stocking rate on heavily used patches is much higher than that…Publication Date 2003
- basal area
- patch overgrazing
- patch selection
- spatial heterogeneity
- Species Composition.
- stocking rates
- rangeland condition
- degradation
- rangelands
- grazing
- animal impact
- management
- Africa
- Library Collection RecordThe numbers of livestock and wildlife that can be supported in an arid environment such as the Hoanib River catchment, north-western Namibia, are determined by annual and seasonal availability of…Publication Date 2003
- Non-equilibrium system
- vegetation assessment
- Arid Environment
- vegetation dynamics
- ecosystem ecology
- livestock
- wildlife
- grazing
- rainfall
- land use
- piosphere
- Africa
- Library Collection RecordRange condition at sites of differing land-use intensity at a communal farm was assessed. Vegetation, soil and termite parameters were tested for their potential as indicators. The vegetation…Publication Date 2002
- desertification
- land degradation
- range condition assessment
- indicators
- soil fertility
- Termites
- biodiversity
- land-use intensity
- land use
- degradation
- rangeland condition
- communal farming
- Soil Condition
- Africa
- Library Collection RecordPlant and bird species richness and abundance in two patches of native Acacia karroo and two patches of alien Prosopis species drainage line woodland in the southern Kalahari, South Africa, were…Publication Date 2002
- invasive plants
- Arid savanna
- Woodland structure
- bird communities
- diversity
- biodiversity
- vegetation dynamics
- Africa
- Library Collection RecordNebkha dunes have been proposed as a reliable rapid indicator of aeolian erosion and dryland degradation. This paper tests the applicability of these links for the Molopo Basin, southern Africa where…Publication Date 2002
- nebkha
- soil degradation
- wind erosion
- Molopo Basin
- southern Africa
- soils
- degradation
- ecology
- Africa
- Library Collection RecordWe examined the relationship between a Chihuahuan Desert grassland keystone species (banner tailed kangaroo rat, Dipodomys spectabilis) and several vegetation and soil indicators of rangeland health…Publication Date 2002
- banner-tailed kangaroo rat
- Chihuahuan Desert
- desertification
- Dipodomys spectabilis
- Environmental indicators
- degradation threshold
- grasslands
- degradation
- decision support systems
- modelling
- Africa
- Library Collection RecordThis study examined the short-term response of rangeland to annual (1993/94 to 1996/97 seasons) application of fertilizer [all combinations of 0; 10; 30 and 50 kgha-1nitrogen (N), with 0 and 10 kgha…Publication Date 2002
- aboveground phytomass production
- drought sensitivity
- Crude Protein Content
- nitrogen
- nutrient use efficiency
- phosphorus
- rain-use efficiency
- soil compaction
- rangelands
- fertilizer
- plant production
- species richness
- Soil Condition
- vegetation dynamics
- soil fertility
- Africa
- Library Collection RecordAcross nearly 100 sampling locations widely distributed within the arid shrubland of Western Australia, we demonstrated a general relationship between landscape function, primary productivity and…Publication Date 2002
- landscape function
- resilience
- Landscape degradation
- primary productivity
- indicators
- patch
- patch-mosaic
- ecosystem ecology
- plant production
- rainfall
- grazing
- sheep
- degradation
- Africa
- Library Collection RecordSeveral studies in arid ecosystems have demonstrated that seedling establishment and survival were greater underneath the canopies of shrubs than in the open spaces between shrubs. These results led…Publication Date 2001
- mining
- Namaqualand
- revegetation
- seedling survival
- shrub canopies
- topsoil replacement
- transplanting
- biodiversity
- Phytosociology
- germination
- rehabilitation
- ecology
- Africa
- Library Collection RecordAfter-ripening of Cenchrus ciliaris L. spikelets was modelled during storage at various temperatures and equilibrium relative humidities (e.r.h.). At 40 and 50% e.r.h., the rate of after-ripening…Publication Date 2001
- after-ripening model
- buffel grass
- Cenchrus ciliaris seed dormancy
- seed germination
- rangeland re-seeding
- seeds
- germination
- grasslands
- restoration ecology
- reseeding
- degradation
- rangelands
- Africa
- Library Collection RecordDrought is the single most important environmental factor that causes cattle population fluctuations in northern Kenya. The way the grazing lands and animal populations are affected by drought…Publication Date 2001
- arid zone
- cattle mortality
- drought management policy
- herd growth
- Kenya
- multiple droughts
- Obbu Booran
- Pastoralist
- recovery
- drought
- cattle
- grasslands
- animal production
- Africa
- Library Collection RecordWe investigated the incidence of endozoochory in the semi-arid South African Karoo shrubland and Kalahari savanna by dissecting and germinating seed from dung samples from a wide range of wild…Publication Date 2001
- aardvark
- Aizoaceae
- endozoochory
- bat-eared fox
- Kalahari
- Karoo
- Mesembryanthemaceae
- Ostrich
- ecosystem ecology
- seeds
- germination
- mammals
- insects
- Africa
- Library Collection RecordA cutting experiment was carried out in Bah??a Blanca (Argentina) during 1998 and 1999 using a randomized block design in a 23factorial experiment: (1) the species Digitaria eriantha and Eragrostis…Publication Date 2001
- Digitaria
- Eragrostis
- yield
- quality
- Deferred
- grasslands
- forage quality
- fertilisation
- fodder production
- dry matter
- Africa
- Library Collection RecordExperiments were conducted to investigate: (1) tiller recruitment within the interior of Eragrostis curvula tussocks, with and without litter removal; and (2) effects of moderate defoliation on…Publication Date 2000
- tiller demography
- tiller mortality
- central dieback
- clipping
- bunchgrass
- Semi-arid rangeland
- warm-season grass
- rangelands
- plant autecology
- grasslands
- Africa
- Library Collection RecordThe densities of self-established non-indigenous prickly pears (Opuntia ficus-indica) in rangelands of the Karoo recorded on 3434 km of road transects, were on average 800 times greater below…Publication Date 2000
- Corvus
- semi-arid
- avian frugivory
- seed-dispersal
- Alien invasive species
- Africa
- Library Collection RecordWe examined the perceptions and realities of land degradation in a communal ranching area, Otjimbingwe, in arid Namibia (in south-western Africa). It is commonly perceived that large-scale…Publication Date 2000
- land degradation
- Namibia
- livestock
- ranching
- communal pastoralism
- degradation
- communal farming
- pastoralism
- socio-economic aspects
- rainfall
- drought
- stocking rates
- Africa
- Library Collection RecordThe investigation was conducted on an area covered by a dense stand of Hardwickia mopane (Leguminosae: Caesalpinioideae). Seven plots (65x180 m) were subjected to different intensities of tree…Publication Date 2000
- Bush encroachment
- competition
- evapotranspiration
- infiltration
- Hardwickia mopane
- rainwater runoff
- water use efficiency.
- indigenous encroaching species
- soil moisture
- degradation
- soil erosion
- savanna
- vegetation dynamics
- Africa
- Library Collection RecordWe present a remotely-sensed degradation assessment technique based on the measurement of landscape heterogeneity (a key determinant of degradation status). The moving standard deviation index (MSDI…Publication Date 1999
- rangelands
- remote sensing
- NDVI values
- landscape heterogeneity
- Landsat TM
- Landsat images
- landscape ecology
- disturbance
- vegetation dynamics
- Africa
- Library Collection RecordThe debate about the sustainability and productivity of communal lands, especially in comparison with privately managed land, is far from settled. Emerging theories emphasize the spatial and temporal…Publication Date 2000
- Vegetation Change
- vegetation diversity
- semi-arid
- southern Africa
- agropastoralism
- land use
- overgrazing
- Bush encroachment
- soil
- biodiversity
- vegetation dynamics
- indigenous encroaching species
- sustainability
- management
- plant production
- rangeland condition
- rainfall
- Africa
- Library Collection RecordSmall mammal and bird assemblages were compared across fence-lines between one communal and three adjacent commercial range-lands in Namaqualand, South Africa. The communal area has twice the…Publication Date 1999
- Arid rangelands
- birds
- grazing
- livestock impacts
- small mammals
- Succulent karoo
- livestock
- management
- biodiversity
- Africa
- Library Collection RecordInvertebrate assemblages occurring on Paulshoek, a heavily grazed communal farm in Namaqualand, South Africa, were compared to those found on adjacent, moderately grazed farms. The study was…Publication Date 1999
- invertebrates
- livestock grazing
- Arid rangelands
- Succulent karoo
- biodiversity
- grazing
- livestock
- Africa
- Library Collection RecordThe recolonization by plants of overburden dumps created more than 20 years ago by opencast diamond-mining activities on the west coast of South Africa is very slow to non-existent. Only on dumps…Publication Date 1999
- arid rangeland
- Brant's whistling rat
- Parotomys brantsii
- patch creation
- phytotoxic soil
- restoration
- soil microbial activity
- winter rainfall desert
- mine rehabilitation
- system ecology
- Soil Condition
- Africa
- Library Collection RecordOver a 3 year period, selected sites in three categories of rangeland -- good, moderate and poor -- were subjected to varying levels of frequency and intensity of defoliation. Three watering regimes…Publication Date 1999
- Above-ground phytomass production
- Evapo-transpiration
- intensity of defoliation
- frequency of defoliation
- rangeland condition
- soil water balance
- water-use efficiency
- plant production
- soil moisture
- Africa
- Library Collection RecordSeasonal distribution of rainfall is thought to be important in structuring arid and semi-arid plant communities. Controlled studies of rainfall distribution have proven difficult, especially at the…Publication Date 1999
- Artemisia tridintata
- climate change
- rainout shelters
- precipitation distribution
- rainfall
- vegetation dynamics
- ecosystem ecology
- climate
- management
- Africa
- Library Collection RecordWatering points in the semi-arid Kruger National Park, Klaserie Private Nature Reserve, Cleveland Game Park and four game ranches in the Klaserie district were studied. Herbaceous community…Publication Date 2000
- rangeland condition
- watering points
- piosphere
- Kruger National Park
- national parks
- plant production
- Soil Condition
- stocking rates
- vegetation dynamics
- foraging ecology
- Africa
- Library Collection RecordThe objective of this study was to examine the impact of provision of perennial water supply, as a management strategy to enhance game viewing, on herbaceous vegetation. Changes in herbaceous species…Publication Date 1999
- Artificial water provision
- drought
- ecotourism
- herbivore impacts
- proximal polygons
- spatial dynamics
- temporal dynamics
- wildlife management
- savanna
- management
- piosphere
- animal impact
- species richness
- biodiversity
- vegetation dynamics
- Africa
- Library Collection RecordFifteen environmental variables, among them cattle density (hereafter [`]pressure index'), were measured along grazing gradients of eight boreholes at Olifants Drift in south-eastern Botswana.…Publication Date 1998
- environmental variables
- pressure index
- Grazing gradients
- bush-encroaching
- CANOCO
- boreholes
- encroacher
- cattle
- grazing
- stocking rates
- indigenous encroaching species
- pastoralism
- subsistence agriculture
- Africa
- Library Collection RecordThe significance of encroacher woody plant browse (among other factors) in the composition of the diet of cattle was quantified for July 1996, March 1997 and September 1997. This is important because…Publication Date 1998
- woody encroachers
- woody plant browse
- carrying capacity
- communal rangelands
- crude protein
- D. cinerea
- G. flava
- forage quality
- Forage Quantity
- foraging ecology
- cattle
- grasslands
- grazing
- vegetation dynamics
- ecosystem dynamics
- Africa
- Library Collection RecordRecent political changes in South Africa have required a new approach to project management, one that includes community involvement at all levels of project planning, decision-making and execution.…Publication Date 1998
- Mier Rural Area
- Kalahari
- South Africa
- desertification
- Community involvement
- rangeland degradation
- rangeland rehabilitation
- rangeland condition
- rangelands
- degradation
- rehabilitation
- management
- community based resource management
- socio-economic aspects
- decision support systems
- stakeholders
- Africa
- Library Collection RecordA recently published rangeland health assessment guide for arid shrublands of the Karoo, South Africa, addresses the problem of apathy toward rangeland. The guide is designed for land users with a…Publication Date 1998
- rangeland health assessment guide
- South Africa
- shrublands
- Karoo
- rangelands
- decision support systems
- Soil Condition
- animal production
- plant production
- ecology
- management
- Africa
- Library Collection RecordNamibia is an extremely arid country with very low and erratic rainfall. It has a population of 1·7 million people; most Namibians are subsistence farmers living in communal areas that are…Publication Date 1998
- communal farmers
- Namibia
- SARDEP
- community-based organizations
- subsistence agriculture
- sustainability
- policies
- participatory rural appraisal
- Sustainable development
- Africa
- Library Collection RecordThe aim of this study was to determine the water requirements for germination and early seedling establishment of four African savanna tree species, namelyAcacia karroo, A. nilotica, A.…Publication Date 1998
- Acacia karroo
- Acacia nilotica
- Acacia tortilis
- drought
- imbibition
- Mundulea sericea
- regeneration
- root penetration
- seed viability
- seeds
- germination
- savanna
- Africa
- Library Collection RecordTwo pairs of a natural and an artificial watering point in each of the four largest land systems in the Kruger National Park, South Africa were randomly selected for study. The herbaceous community…Publication Date 1998
- piosphere
- grazing pressure
- watering points
- water provision
- Kruger National Park
- national parks
- ecosystem ecology
- vegetation dynamics
- rangeland condition
- degradation
- Africa
- Library Collection RecordThe structural and functional attributes of the herbaceous sward were contrasted under three land uses (commercial cattle farms, communal cattle lands and private game farms) and two catenal…Publication Date 1997
- Annual
- basal area
- cattle
- communal grazing
- density
- game
- palatability
- perennial
- tuft size
- landscape ecology
- commercial agriculture
- communal farming
- game farming
- soils
- climate
- land use
- management
- species richness
- biodiversity
- Africa
- Library Collection RecordSoil particle size distribution and infiltration of water into the soil were measured in transects radiating from drinking troughs in the Kruger National Park. Soil particle size distribution…Publication Date 1997
- Infiltration Rate
- watering points
- piosphere
- Kruger National Park
- national parks
- Soil Condition
- soil moisture
- Africa
- Library Collection RecordThis paper describes a participatory research process designed to gather and structure community knowledge (local and scientific) into a single accessible decision support system, based on case-based…Publication Date 1997
- case-based reasoning
- knowledge enhancement
- rangeland management
- Participatory research
- decision support systems
- decision-making
- Africa
- Library Collection RecordFive techniques that are generally used in the western part of the grassland biome of southern Africa were evaluated. The techniques were tested on the mid-slopes (high species diversity) and…Publication Date 1997
- grazing gradient
- Key Species
- forage factors
- ordination
- grasslands
- grazing
- monitoring
- forage quality
- foraging ecology
- degradation
- Africa
- Library Collection RecordThis paper examines the advantages of the traditional cattlepost system against the recent drive towards the fencing of Botswana's rangelands and the establishment of privatised, commercial beef…Publication Date 1996
- rangelands
- degradation
- Kalahari
- Cattle Ranching
- Hunter-gatherers
- Botswana
- cattle
- subsistence agriculture
- commercial agriculture
- socio-economic aspects
- Economic Aspects
- politics
- policies
- grazing
- Africa
- Library Collection RecordThe emergence and spatial distribution of grass seedlings were studied in a degraded savanna in south-eastern Botswana. When the rainy season started early, several separate establishment…Publication Date 1996
- Africa
- grasses
- rainfall
- Seedling
- Aristida congesta
- Chloris virgata
- Cymbopogon plurinodis
- Eragrostis rigidior
- Tragus berteronianus
- Urochloa panicoides
- degradation
- savanna
- seeds
- germination
- plant autecology
- drought
- runoff
- rehabilitation
- Africa
- Library Collection RecordThe gradual decline in the ecological condition of natural pastures as a result of over-utilization and the application of insufficient management decisions, coupled with the detrimental effects of…Publication Date 1997
- ecotype
- Digitaria eriantha
- Poaceae
- reclamation
- restoration
- arid grasslands
- restoration ecology
- rehabilitation
- grasslands
- management
- drought
- plant autecology
- rainfall
- vegetation dynamics
- seeds
- germination
- ecosystem ecology
- Africa
- Library Collection RecordRangeland ecologists, particularly those in North America, have traditionally worked with a paradigm founded on the notion of Clementsian succession. This is increasingly being called into question.…Publication Date 1997
- succession
- Climax
- Land Units
- Geomorphology
- environmental factors
- floristic
- physiognomic
- vegetation dynamics
- grazing
- management
- Africa