Rangeland Ecology & Management
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- 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
- Library Collection RecordThe arid central dune field of the Namib Desert is characterized by a pronounced rainfall gradient across its west-east, 160 km breadth, and a correlated increase in sand stability and grass…Publication Date 1997
- dune ecology
- fungal diversity
- moisture
- mutualism
- Namib Desert
- Namibia
- pulse-reserve paradigm
- mycorrhiza
- rainfall
- ecosystem dynamics
- ecosystem ecology
- Africa
- Library Collection RecordThe percentage of phenolic containing cells (PCC) and total phenolics in the leaves of different ecotypes of three ecological important grass species were determined during cultivation under uniform…Publication Date 1995
- phenolic compounds
- ecotypes
- Themeda triandra
- Eragrostis racemosa
- Digitaria eriantha
- plant autecology
- vegetation dynamics
- rangeland condition
- Africa
- Library Collection RecordThis work reports on a method using fuzzy membership functions to construct an aggregated interaction matrix in which the summation of variables is scaled according to the way rainfall and soil…Publication Date 1995
- rangelands
- biomass production
- fuzzy sets
- interaction matrix
- models
- aggregated knowledge
- rainfall
- Soil Condition
- soil moisture
- water use efficiency
- plant production
- animal production
- Africa
- Library Collection RecordIn semi-arid and arid magisterial (administrative) districts (n = 45) in the Cape Province, South Africa, there has been a mean 44·4 ± 14·6% (S.D.) reduction in the stocking rates of domestic…Publication Date 1994
- livestock
- animal production
- stocking rates
- rainfall
- drought
- socio-economic aspects
- Africa
- Library Collection RecordUsing the methods of direct gradient analysis, we investigated some of the factors responsible for species turnover in the dwarf shrubland/grassland interface of the eastern half of the Nama-Karoo…Publication Date 1994
- grasslands
- soil moisture
- species richness
- rainfall
- environmental factors
- climate change
- management
- Africa
- Library Collection RecordFood plant selection by herbivorous mammals and by harvester ants Messor capensis was compared for three sites differing in past and present management in the southern Karoo, South Africa. At all…Publication Date 1993
- ecology
- seeds
- insects
- grazing
- management
- rangeland condition
- rangelands
- degradation
- Africa
- Library Collection RecordThis paper discusses land use patterns of hunter-gatherers inhabiting arid grasslands of later Pleistocene East Africa, inferred from an analysis of raw material economy in five Later Stone Age (LSA…Publication Date 1999
- palaeobotany
- land use
- grasslands
- Africa
- Library Collection RecordAbstract 10.1002/qj.49712253008.abs An atmospheric general-circulation model with realistic land-surface properties is used to investigate the climatic effect of doubling the extent of the earth…Publication Date 1996
- climate change
- Climate modelling
- desertification
- Regional climate sensitivity
- Africa
- Library Collection RecordThe relationships between pastoralists, livestock, and the environment in dryland Africa are complex. Over the last half-century dominant narratives have portrayed pastoralists and their livestock as…Publication Date 2010
- NDVI
- GPS
- cattle mobility
- grazing ecology
- degradation
- Cultural ecology
- piosphere
- Kenya
- Africa
- Library Collection RecordRestoration of degraded soils is a development strategy to reduce desertification, soil erosion and environmental degradation, and alleviate chronic food shortages with great potential in sub-Saharan…Publication Date 2005
- soil organic matter
- soil degradation
- global warming
- soil restoration
- agroforestry
- farming systems
- ecoregions
- Sub-Saharan Africa
- carbon sequestration in soil
- soil organic carbon
- carbon sequestration
- climate change
- restoration ecology
- degradation
- Soil Condition
- desertification
- erosion
- carbon dioxide
- fire ecology
- agriculture
- management
- Africa
- Library Collection RecordWhat is overgrazing? Does it cause soil erosion? The recent debate from the ecological literature is reviewed as background to the debate on overgrazing and soil erosion. This debate stresses the…Publication Date 2004
- soil erosion
- Over Grazing
- Communal lands
- equilibrium and non-equilibrium theory
- South Africa
- grazing
- communal farming
- Abandoned lands
- rangeland condition
- management
- Africa
- Library Collection RecordWoody, subalpine shrubs and grasses currently surround Lake Rutundu, Mount Kenya. Multiple proxies, including carbon isotopes, pollen and grass cuticles, from a 755-cm-long core were used to…Publication Date 2003
- Late Quaternary
- East Africa
- palaeoecology
- fire history
- C3
- C4
- palaeobotany
- Africa
- Library Collection RecordStable carbon and oxygen isotope analyses of ungulate grazers from four archaeological sites located in different environs within the Caledon River Valley have provided a relatively well-dated proxy…Publication Date 2002
- terminal Pleistocene
- Holocene
- carbon and oxygen isotopes
- southern Africa
- palaeoenvironments
- palaeobotany
- palaeoclimate
- Africa
- Library Collection RecordThe microscopic charcoal content of several Quaternary pollen sequences is used to investigate fire history in South Africa both during the Holocene and the Late Pleistocene. Although fluctuations in…Publication Date 2002
- microscopic charcoal
- pollen sequences
- fire history
- Iron Age
- Quaternary
- South Africa
- palaeobotany
- Africa
- Library Collection RecordAs stated by many authors in the recent past, soil erosion is one of the major environmental problems in southern Africa and it will become even more severe in the future due to population growth and…Publication Date 2003
- remote sensing
- degradation
- Erosion modelling
- Swaziland
- modelling
- soil erosion
- grasslands
- Africa
- Library Collection RecordIn the context of climate change mitigation and poverty reduction, it has been argued that biogas energy is relevant, as it is economically and ecologically useful. In the 1980s, biogas use played an…Publication Date 2014
- climate change
- Biogas
- socio-economic aspects
- policy
- rural women
- household income studies
- subsistence agriculture
- rural areas
- Burundi
- Africa
- Library Collection RecordA paired site study was conducted of communally grazed eutrophic and dystrophic grasslands and adjacent ungrazed areas of varying periods of exclusion from communal grazing. This allowed…Publication Date 1999
- grasslands
- grazing
- rural areas
- subsistence agriculture
- animal production
- plant production
- biodiversity
- Africa