Rangeland Ecology & Management
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Displaying 151 - 200 of 202 results
- Library Collection RecordNo Abstract available.Publication Date 2002
- cattle
- sustainability
- southern Africa
- Library Collection Record
152 Desertification
Desertification is the diminution or destruction of the biological potential of land and can ultimately lead to desert-like conditions. It is an aspect of the widespread deterioration of ecosystems…Publication Date 2002- desertification
- southern Africa
- Library Collection RecordThe chapter discusses the bioclimatic regimes that are generally determined by temporal and spatial averaging of weather patterns. Local weather variations result from these broad geographic-scale…Publication Date 2002
- desertification
- climate
- southern Africa
- Library Collection RecordThis chapter discusses the value and future of natural desert ecosystems. The goods and services provided by ecological systems and the natural capital that produce them are critical to the…Publication Date 2002
- desertification
- ecosystem ecology
- southern Africa
- Library Collection RecordThis chapter describes assessment, which is a one-time process that relies on a statistically valid sampling within a region and monitoring that consists of a series of measurements designed to…Publication Date 2002
- desertification
- monitoring
- southern Africa
- Library Collection RecordEcology and desert ecology have focused on feeding relationships within assemblages of organisms and/or the relationships of plants to the animals that feed on them. Major differences in the…Publication Date 2002
- desertification
- socio-economic aspects
- southern Africa
- Library Collection RecordDecomposition is a process that releases nutrient materials in the structure of plant and animal tissues to the soil solution where the nutrients are once again potentially available to plants.…Publication Date 2002
- ecology
- desertification
- soils
- southern Africa
- Library Collection RecordThe chapter describes different patches that are included in a single landscape unit. Patches differ in size, species composition, and the way they function in a landscape. Patches may be composed of…Publication Date 2002
- vegetation dynamics
- ecology
- southern 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 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 RecordLantana camara (lantana), a thicket-forming shrub, a number of different varieties of which were introduced into South Africa as ornamental plants but which has become a serious invasive weed.…Publication Date 2002
- Biological pest control
- South Africa
- Lantana camara
- Beetles
- Hemiptera
- Weeds
- Alien invasive species
- biological control
- modelling
- southern Africa
- Library Collection RecordThis chapter discusses the magnitude and dynamics of the soil organic carbon (SOC) and soil inorganic carbon (SIC) pools. The chapter also describes the impact of different land uses and management…Publication Date 2001
- carbon dioxide
- carbon sequestration
- Carbon Sink
- climate change
- soils
- southern Africa
- Library Collection RecordNo abstract available.Publication Date 2001
- climate change
- carbon sequestration
- monitoring
- soils
- degradation
- southern Africa
- Library Collection RecordPeople have inhabited terrestrial ecosystems of the world for thousands of years. Both resource management systems and cosmological belief systems have evolved and continue to develop. In fact, most…Publication Date 2001
- conservation
- biodiversity
- southern Africa
- Library Collection Record
165 Desertification
The phenomenon of desertification involves the loss of biological or economic productivity and biodiversity in arid and semiarid croplands, pastures, rangelands, and subhumid woodlands due mainly to…Publication Date 2001- desertification
- southern Africa
- Library Collection RecordThe geology, climates past and present, and soils of Africa are summarized, as are the effects of fire on the vegetation. The vegetation and animals of each major zone – forest, tropical seasonal…Publication Date 2001
- ecosystem ecology
- biodiversity
- southern Africa
- Library Collection RecordSummary Grasslands are located in areas with precipitation ranging between 150 and 1200 mm yr-1 and temperature between 0 and 25 C (Lieth and Whittaker, 1975). Along a precipitation gradient, in…Publication Date 2001
- grasslands
- rainfall
- ecosystem ecology
- southern Africa
- Library Collection RecordWoody plant encroachment has been widespread in grassland and savanna ecosystems over the past century. This phenomenon jeopardizes grassland biodiversity and threatens the sustainability of pastoral…Publication Date 2001
- grasslands
- soils
- indigenous encroaching species
- southern Africa
- Library Collection RecordSummary The growth of agricultural production worldwide has led to an increasing role of agro-ecosystems within the global carbon cycle. Arable land in the world covers about one-tenth of the 134…Publication Date 2001
- plant production
- carbon dioxide
- animal nutrition
- animal production
- southern Africa
- Library Collection RecordLivestock have played a pivotal and positive role in human development. Yet this has come at a heavy cost to the biological diversity of the world's rangelands and forests. Livestock grazing is…Publication Date 2001
- rangelands
- ecology
- livestock
- southern Africa
- Library Collection RecordSummary The savanna biome is diverse, including formations ranging from almost treeless grasslands to more or less closed-canopy woodlands with considerable variation in plant composition, biomass,…Publication Date 2001
- savanna
- animal production
- plant production
- plant community ecology
- land use
- degradation
- agriculture
- ecology
- southern Africa
- Library Collection Record
172 Grasslands
Vegetation dominated by grasses, which is among the largest ecosystems in the world, has great environmental significance as well as providing feed for livestock and wildlife. Grassland types vary…Publication Date 2001- savannah
- steppe
- grasses
- herbivory
- grazing
- fire
- savanna
- grasslands
- disturbance
- livestock
- southern Africa
- Library Collection RecordSummary In order to obtain a better insight into past vegetational and climatic changes along the Pole-Equator-Pole: Americas (PEP 1) transect, 32 late Quaternary pollen records from savanna and…Publication Date 2001
- southern Africa
- Library Collection RecordSummary in English and AfrikaansPublication Date 2001
- plant autecology
- grasslands
- southern Africa
- Library Collection RecordDuring the last decade a [']new rangeland science 039; has emerged. One of the tenets of the new science is that pastoralists should not adhere to a single conservative stocking rate, but rather…Publication Date 2000
- Capital costs
- cattle
- carrying capacity
- Environmental costs
- modelling
- rangeland
- southern Africa
- stocking rate
- socio-economic aspects
- economics
- management
- 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 RecordThe Mceula Commonage Land in the Hewu district lies due northwest of Whittle sea and west of Queenstown in the Eastern Cape. This thesis has two main objectives. Firstly, to survey and analyse the…Publication Date 2000
- natural resources
- management
- Eastern Cape
- subsistence agriculture
- Economic Aspects
- medicinal plants
- soil
- socio-economic aspects
- sustainability
- land use
- degradation
- participatory rural appraisal
- southern Africa
- Library Collection RecordA comparison of soil degradation between communal grazing and controlled grazing was undertaken in the Victoria-East district of the Eastern Cape. The study was undertaken in the communal rangeland…Publication Date 2000
- soil
- degradation
- rangelands
- management
- communal grazing
- subsistence agriculture
- grazing
- commercial agriculture
- erosion
- southern Africa
- Library Collection RecordAbstract The Addo Elephant National Park (AENP) is the only existing national park situated in succulent thicket. This unique veld type is endemic to the Eastern Cape, and forms an important centre…Publication Date 1998
- Addo Elephant National Park
- flora
- Elephants
- Nature reserves
- management
- biodiversity
- degradation
- southern Africa
- Library Collection RecordHypotheses about the relative productivities and impacts of current and officially recommended stocking rates were tested in a case study in southern Africa. They support the view that biased…Publication Date 1997
- stocking rate
- carrying capacity
- Range degradation
- sustainability
- Option value
- modelling
- southern Africa
- animal production
- modelling
- Plant Productivity
- decision support systems
- economics
- Africa
- Library Collection RecordA history ofland degradation is reconstructed in a part of the dividing ridge between the Great Fish and Keiskamma rivers, in Peddie District, former Ciskei. The study entails a comparative…Publication Date 1997
- land use
- Eastern Cape
- South Africa
- erosion
- degradation
- Tenure
- land use
- Subsistence farming
- Commercial farming
- Traditional management
- betterment villages
- Aerial Photographs
- GIS
- southern Africa
- Library Collection RecordThe impact of ecological factors such as changes in rainfall could lead to large compositional changes in the diverse indigenous flora of southern Africa. A study was therefore initiated to determine…Publication Date 1995
- vegetation
- rainfall increase
- rainfall decrease
- southern Africa
- rainfall
- species richness
- biodiversity
- drought
- grazing
- vegetation dynamics
- Africa
- Library Collection RecordThe Integrated System for Plant Dynamics (ISPD) is a comprehensive system in which new and existing data and knowledge are quantitatively or qualitatively used as a basis for range condition and…Publication Date 1995
- Integrated System for Plant Dynamics
- range condition
- grazing capacity
- southern Africa
- Eastern Mixed Bushveld
- grazing
- modelling
- savanna
- rangeland condition
- management
- degradation
- Africa
- Library Collection RecordThis paper examines sensitivity of the Southern African subcontinent to climate change. It shows that the region has particularly sensitive water resources. Aridification of the subcontinent will…Publication Date 1994
- climate change
- southern Africa
- drought
- Africa
- Library Collection RecordA methodology is described for the analysis of Holocene charcoals excavated from a rock shelter in the Lubombo Mountains of northeast Swaziland. Scanning electron microscopy was used to compare these…Publication Date 1985
- southern Africa
- Swaziland
- Quaternary
- late stone age
- Holocene
- palaeoclimate
- charcoal identification
- scanning electron microscopy
- Africa
- Library Collection RecordThe Mfolozi and Hluhluwe Valleys of southeastern Africa are representative of a sub-tropical biome and have archaeological evidence for farming settlement spanning more than 1500 years. By collecting…Publication Date 1984
- southern Africa
- sub-tropics
- farming communities
- soils
- plant communities
- site distributions
- iron production
- Environmental change
- conservation
- palaeobotany
- agriculture
- Africa
- Library Collection RecordAbstract not available.Publication Date 1970
- pasture management
- agriculture
- southern Africa
- Library Collection RecordNo abstract available.Publication Date 1970
- pasture management
- agriculture
- southern Africa
- Library Collection RecordNo abstract availablePublication Date 1970
- grasslands
- ecology
- biodiversity
- southern Africa
- Library Collection RecordNo abstract availablePublication Date 1969
- nutrition
- forage quality
- southern Africa
- Library Collection RecordNo abstract available.Publication Date 1969
- nutrition
- forage quality
- southern Africa
- Library Collection RecordNo abstract availablePublication Date 1969
- hydrology
- rangelands
- southern Africa
- Library Collection RecordIn recent years in East and Southern Africa, increasing pressure of Man and domesticated animals on the natural environment has caused a rapid deterioration of soil, vegetation, and water resources,…Publication Date 1969
- degradation
- game farming
- conservation
- Economic Aspects
- southern Africa
- Library Collection RecordNo abstract availablePublication Date 1968
- ecology
- fire
- grasslands
- southern Africa
- Library Collection RecordThis article deals with the most important aspects of nearly twenty years of intensive study of the pollen-and-spore content of Tertiary sediments in some parts of tropical South America, Africa and…Publication Date 1968
- palaeobotany
- southern Africa
- Library Collection RecordFrom the time aerial photographs were used in South Africa for the compilation of topographic maps, these maps have included some information on land use. Since the end of the Second World War more…Publication Date 1965
- southern Africa
- Library Collection RecordSummary The effects of fertilization of forage crops vary with soil types, relative levels of fertility within soil type, ratios of available nutrients, crops, and climatic conditions. Increased…Publication Date 1959
- fertilizer
- forage quality
- soil nutrients
- Soil Condition
- southern Africa
- Library Collection RecordSUMMARY The author has attempted a revision of all the African species of Terminalia. She has examined all of the type specimens, except those which were destroyed in Berlin during the recent war,…Publication Date 1959
- taxonomy
- southern Africa
- Library Collection RecordSummary Since the Union of South Africa was founded in 1910, the volume of dairy production and consumption has increased--both in total amount and per capita. This growth is part of the evolution of…Publication Date 1958
- southern Africa
- Library Collection RecordSUMMARY. * 1The existing information about the Tertiary geology and elimate of Africa is collated and discussed critically. * 2There is no evidence for a revolution in the climate and fauna of Africa…Publication Date 1952
- palaeobotany
- palaeoclimate
- southern Africa