Rangeland Ecology & Management
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- Library Collection RecordInvasive plants and plantations may be detrimental to native, ground-living, invertebrate fauna. Using pitfall traps at 20 sites in Pietermaritzburg, South Africa, an assessment was made of the…Publication Date 1996
- invertebrates
- native vegetation
- Invasive vegetation
- afforestation
- Alien invasive species
- ecosystem ecology
- Africa
- Library Collection RecordChromolaena odorata (L.) King & Robinson continues to spread through southeast Asia into the south Pacific, and into central and eastern Africa from the infestations in western and southern…Publication Date 1996
- Chromolaena odorata
- Siam weed
- Africa
- Asia
- Oceania
- Australia
- climate matching
- distribution
- Alien invasive species
- decision support systems
- Phytosociology
- management
- Africa
- Library Collection RecordSpatio-temporal variation in dung beetle distribution and cattle dung dispersal was quantified across a spectrum of summer rainfall habitat types in South Africa, i.e. grassland, open woodland and…Publication Date 1996
- Australia
- dung
- Pasture Improvement
- Scarabaeidae
- South Africa
- dung beetles
- ecosytem ecology
- soils
- rangeland condition
- rainfall
- grasslands
- Africa
- Library Collection RecordThis paper presents a structured research design to achieve an economically viable and ecologically sustainable land use. It includes the major elements required to achieve a predictive capability at…Publication Date 1996
- adaptive management
- Ecological economics
- landscape ecology
- rangelands
- Sustainable utilisation
- Economic Aspects
- Systems research
- Sustainable development
- management
- Africa
- Library Collection RecordChromolaena odorata (L.) King & Robinson, a perennial, semi-woody, herbaceous scrambling shrub of neotropical origin, is an invasive weed of agriculture, forestry and conservation in many parts…Publication Date 1996
- Chromolaena odorata
- distribution
- integrated control
- management
- Weeds
- invasive plants
- Alien invasive species
- herbicides
- biological control
- Africa
- Library Collection RecordThis paper evaluates research on herbaceous tropical forage legumes in sub-Saharan Africa and offers two alternative explanations for the lack of adoption of adapted species. There is a considerable…Publication Date 1995
- legumes
- Herbaceous forages
- evaluation
- Sub-Saharan Africa
- forage quality
- management
- Africa
- Library Collection RecordThe carrying capacity concept was developed from animal ecology, and applied to rangeland management in order to assess sustainable livestock stocking rates. In it, long-term ecological…Publication Date 1994
- rangelands
- management
- livestock
- carrying capacity
- stocking rates
- agriculture
- sustainability
- Africa
- Library Collection RecordThe Hakea seed-moth, Carposina autologa Meyrick was released in South Africa for the biological control of Hakea sericea Schrader. The impact of the moth on the canopy-stored seeds of H. sericea was…Publication Date 1993
- biological control
- Alien invasive species
- Weeds
- management
- Africa
- Library Collection Record
2859 Rangelands
Effective integration of the three main goals of rangeland management - economic gain through livestock production, management of game animals for recreational use, and conservation of biological…Publication Date 1992- rangelands
- biodiversity
- Economic Aspects
- grazing
- livestock
- conservation
- animal impact
- animal production
- management
- fire
- restoration ecology
- Africa
- Library Collection RecordSince its beginning about ten thousand years age, agriculture has spread steadily around the world to become a dominant form of land management on all continents. Agricultural practices have affected…Publication Date 1992
- agriculture
- conservation
- management
- Africa
- Library Collection RecordThere are at least five Prosopis species, one with two subspecies, that have become naturalized in South Africa. All were introduced to provide shade in almost treeless semi-desert areas and because…Publication Date 1991
- biological control
- Alien invasive species
- Weeds
- insects
- seeds
- Africa
- Library Collection RecordSesbania punicea (Cav.) Benth., a South American leguminous shrub or small tree, has recently become a weed, principally of river banks and of wetlands, throughout South Africa. Three weevil species…Publication Date 1991
- Sesbania punicea
- Alien invasive species
- biological control
- insects
- management
- Africa
- Library Collection RecordTwo of the Australian acacias that are weeds in South Africa are also exploited commercially and the desirability of exoticAcacia spp. is disputed. This conflict has created problems for the…Publication Date 1991
- Alien invasive species
- Weeds
- socio-economic aspects
- biological control
- invertebrates
- Africa
- Library Collection RecordHakea sericea Schrader is a proteaceous shrub or small tree from southeastern Australia which has become an invasive weed of major importance in South Africa, particularly in the mountain catchments…Publication Date 1991
- Alien invasive species
- management
- biological control
- Africa
- Library Collection RecordHypericum perforatum L. is a herbaceous perennial plant that was first noticed as an invader in the Southwestern Cape of South Africa in 1945. Following an unsuccessful chemical control programme, a…Publication Date 1991
- Alien invasive species
- Weeds
- biological control
- management
- Africa
- Library Collection RecordLantana camara L., a fast-growing verbenaceous shrub from Central and South America, is a toxic invasive weed in many countries. Taxonomically, L. camara is a complex of several cultivars (forms)…Publication Date 1991
- biological control
- Weeds
- Alien invasive species
- Lantana camara
- management
- Africa
- Library Collection RecordA transition from shifting cultivation towards more intensive types of agriculture necessitates the introduction of alternative systems of cultivation. Since this change is often followed by…Publication Date 1990
- agriculture
- subsistence agriculture
- soil fertility
- land use
- Africa
- Library Collection RecordThe proposed environmental release of genetically engineereed microorganisms (GEMs) presents unique problems in hazard assessment. Currently, there are two general models, which might serve as…Publication Date 1988
- soils
- ecology
- pollution
- invertebrates
- genetically engineered microorganisms
- hazard assessment
- Africa
- Library Collection RecordThe semi-arid lands of the world are characterized by low and unreliable rainfall, with lack of soil moisture during all or part of the year being the predominant limitation to vegetative growth.…Publication Date 1988
- agriculture
- irrigation
- soil moisture
- management
- erosion
- land use
- Africa
- Library Collection RecordGrassland burning elicits a diverse array of responses by arthropods, depending upon many interactive factors. Empirical models were developed, based on the literature, to qualitatively order…Publication Date 1987
- grasslands
- fire ecology
- insects
- modelling
- ecosystem ecology
- Africa
- Library Collection RecordSatellite imaging systems do not produce images that are in perfect planimetric accord with the Earth's surface, nor do the images coincide with the deliberately distorted geometrics of various…Publication Date 1987
- satellite imagery
- image registration
- vegetation monitoring
- remote sensing
- drought
- management
- vegetation dynamics
- Africa
- Library Collection RecordWe begin by stressing that relevant and adequate information is an essential ingredient of efficient decision-making processes aimed at optimising the performance of livestock enterprises. Such…Publication Date 1995
- livestock
- Health production
- Africa
- Monitoring methods
- decision support systems
- management
- animal production
- monitoring
- Africa
- Library Collection RecordDisease of domestic animals on rangelands is caused by a wide variety of agents (some infectious and some non-infectious). Disease is primarily a function of the ecosystem, where a shift in the…Publication Date 1992
- livestock
- disease
- rangelands
- ecosystem ecology
- economics
- Africa
- Library Collection RecordILCA's overall aim is to improve human welfare and food supplies in Africa. Increased livestock production provides the cash income so essential for increases in food grain production in a part…Publication Date 1984
- Africa
- Library Collection RecordPopulation pressures within southern Africa are forcing people to increasingly crop land of a diverse and fragile nature where the risk of environmental degradation is high and current yields are low…Publication Date 1993
- soil moisture
- no-till
- climate
- Soil Condition
- soil fertility
- socio-economic aspects
- communal farming
- Africa
- Library Collection RecordIntroduction of mechanized agriculture induces profound changes in soil characteristics. Soil compaction originating from mechanical land clearing, mechanized cultivation, and continuous cropping is…Publication Date 1993
- Soil Condition
- no-till
- management
- rehabilitation
- ecosystem ecology
- Africa
- Library Collection RecordThe Karoo Sequence spans an age ranging from Carboniferous to Jurassic and occurs in intra-cratonic and graben-rift basins throughout southern Africa. All of the subcontinent 039;s bituminous,…Publication Date 1990
- plant anatomy
- palaeoecology
- grasslands
- palaeobotany
- Africa
- Library Collection RecordPetrographical and palynological coal-quality investigations relating to variations in one of the best-known and well-researched coalfields in Africa, the Witbank coalfield, and one of the most…Publication Date 1989
- palaeobotany
- Africa
- Library Collection RecordOne of the major diseases affecting human beings and livestock in Africa, trypanosomiasis--known in its common human form as sleeping sickness--remains resistant to general eradication, a wide belt…Publication Date 1979
- disease
- livestock
- insects
- economics
- ecology
- Africa
- Library Collection RecordIntroduction of international tourism as a development stimulus or tool in sub-Saharan Africa is relatively recent. In the context of Kenya, tourism development, in volume and value terms,…Publication Date 1991
- international tourism
- tourism planning
- tourism development
- Africa
- developing countries
- Kenya
- policy issues
- Africa
- Library Collection RecordThe characteristics and dynamics of dry savanna vegetation cover are receiving considerable attention from the perspectives of both global change and range degradation studies. Problems include the…Publication Date 1996
- savanna
- remote sensing
- mapping
- management
- degradation
- grazing
- Africa
- Library Collection RecordThe large human and livestock populations in relation to the land area, coupled with the [`]user-right' land tenure system, makes the land use planning process in the communal lands of Zimbabwe…Publication Date 1990
- management
- land use
- policies
- politics
- socio-economic aspects
- subsistence agriculture
- Africa
- Library Collection RecordThis paper aims, first, to examine critically Kenya's economic, political, and planning systems, since they can be identified as the causal factors producing many of Kenya's environmental…Publication Date 1988
- economics
- politics
- policies
- legislation
- socio-economic aspects
- Africa
- Library Collection RecordPlant-derived smoke and aqueous extracts of smoke stimulate germination of dormant seed of the important fire-climax grass Themeda triandra (redgrass). The positive germination response to smoke…Publication Date 1994
- Themeda triandra
- plant-derived smoke
- seed germination
- ethylene
- Africa
- Library Collection RecordResults of various studies on the origin of Arctic air pollution are reviewed, focusing on what is known about its physical characteristics and chemical composition, as well as on emission sources…Publication Date 1995
- Arctic air pollutants
- emissions
- Origins
- climate change
- Africa
- Library Collection RecordNo abstract availablePublication Date 1991
- palaeobotany
- grassland
- soils
- Africa
- Library Collection RecordThe fossil locality of Fort Ternan, Kenya, preserves the remains of the middle Miocene hominoidKenyapithecus wickeri, and a reconstruction of the paleoenvironment of this site offers important…Publication Date 1991
- middle Miocene
- Bovids
- functional morphology
- Kenyapithecus
- paleoecology
- hominoid evolution
- palaeobotany
- Africa
- Library Collection RecordNo abstract availablePublication Date 1987
- palaeoecology
- Africa
- Library Collection RecordA state-of-the-art review is presented concerning the transport of nutrients (N and P), oxygen demanding compounds (BOD and COD), indicator organisms and pathogens in runoff from land areas receiving…Publication Date 1980
- pasture management
- rangelands
- pollution
- nutrient loads
- management
- runoff
- Africa
- Library Collection RecordStructural and stratigraphic aspects of the Lebowa Granite Suite (the granites) and Rustenburg Layered Suite (the basic rocks) are examined and compared in various compartments of the Bushveld…Publication Date 1990
- palaeobotany
- Africa
- Library Collection RecordAn extensive search was made for distinctive shock-metamorphic effects in order to test the theory that the Bushveld Complex (BC) was formed by the impact of large extraterrestrial objects. Field and…Publication Date 1990
- palaeobotany
- Africa
- Library Collection RecordPaleomagnetic pole positions, ocean-floor magnetic anomalies and least-squares fits of continental edges show that most Phanerozoic orogenic belts have formed at or near the borders of continents and…Publication Date 1976
- palaeobotany
- Africa
- Library Collection RecordThe effects of soil texture and grassland management, i.e. rate of fertilizer N input, mowing vs grazing, and the number of years the site is under grass, on the amounts of soil organic C and N and…Publication Date 1994
- soil nutrients
- grasslands
- management
- Soil Condition
- grazing
- mowing
- Africa
- Library Collection RecordAs sustainable crop management systems are developed, an assessement of the effects of these practices on the soil microflora is essential to ensure maximum productivity. A 3-year field study was…Publication Date 1995
- Africa
- Library Collection RecordThis paper presents the results of a two-year study commissioned by the Department of Interior to examine the costs and benefits of a remote data acquisition system for natural resource management.…Publication Date 1984
- Africa
- Library Collection RecordA pollen sequence in a relatively young hyrax dung midden in the Orange Free State, South Africa, shows marked changes in composition which can be related to environmental fluctuations. The midden…Publication Date 1992
- palaeobotany
- Africa
- Library Collection RecordPollen analysis of vlei or swamp sediments from the Nuweveldberg Mountains in the Central Karoo yields a vegetation history spanning the last 760 years. It sheds light on the local vegetation shifts…Publication Date 1989
- palaeobotany
- palaeoclimate
- Africa
- Library Collection RecordResults of fossil pollen studies in Eastern, Central and Southern Africa covering the last 32,000 years are surveyed in this paper. This research, conducted between 1951 and 1985, was mostly…Publication Date 1988
- palaeobotany
- Africa
- Library Collection RecordPollen spectra in a peat deposit from a mountainous area near Tate Vondo in Venda have been grouped into three zones. The oldest zone of c. 12,000-10,000 yr B.P. contains mainly grassland and fynbos…Publication Date 1987
- palaeobotany
- Africa
- Library Collection RecordPollen analyses of rare spring deposits in the Transvaal, South Africa, ranging back to roughly 35 000 B.P., were carried out. A photographic record of 140 types of palynomorphs was made. Indicators…Publication Date 1982
- palaeobotany
- Africa
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