Rangeland Ecology & Management
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Displaying 1 - 50 of 332 results
- 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 RecordSince the rise of its first democratically elected government in 1994, South Africa has sought to redress its highly inequitable land distribution through a series of land-reform programs. In this…Publication Date 2008
- land redistribution
- Limpopo Province
- political ecology
- South Africa
- Western Cape Province
- land reform
- policies
- land use
- 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 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 Record[1] Land use/cover change has been recognized as a key component in global change. Various land cover data sets, including historically reconstructed, recently observed, and future projected, have…Publication Date 2007
- land use
- climate change
- management
- classification
- data analysis
- remote sensing
- modelling
- rainfall
- Africa
- Library Collection RecordIt has been well established that drought frequently emerges in several tropical regions following the onset of El Niño. An important characteristic of such droughts is their spatial extent, which…Publication Date 2006
- drought
- climate change
- El Nino
- rainfall
- 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 RecordThis paper documents a continuous ~ 44,000-yr pollen record derived from the Mfabeni Peatland on the Maputaland Coastal Plain. A detailed fossil pollen analysis indicates the existence of extensive…Publication Date 2008
- climate change
- Forest history
- Maputaland
- Africa
- pollen
- human impacts
- palaeobotany
- Africa
- Library Collection RecordNo abstract availablePublication Date 2007
- carbon dioxide
- savanna
- climate change
- Africa
- Library Collection RecordLong environmental proxy records are very scarce in semi-dry continental areas and often those available present conflicting interpretations. However, more in-depth investigation of apparent…Publication Date 2008
- pollen
- Lake sediments
- Stable isotope
- Speleothem
- climate change
- palaeobotany
- Africa
- Library Collection RecordThis paper reports new multi-proxy palaeoenvironmental data on the late Glacial-Holocene transition (c. 14.8-9.3 ka) in equatorial East Africa, in the form of microfossil assemblages (chironomids,…Publication Date 2007
- climate change
- Crater lake
- Chironomids
- Diatoms
- East Africa
- Empakaai
- Multi-proxy reconstruction
- Ostracods
- palaeobotany
- Africa
- Library Collection RecordThis review discusses persistent tensions in efforts to secure land rights in Africa's drylands. Some researchers and practitioners advocate for formal, legal recognition of group rights as a…Publication Date 2008
- drylands
- Secure access
- land tenure
- Customary rights
- natural resources
- Multiple users
- Africa
- subsistence agriculture
- land use
- policies
- socio-economic aspects
- Africa
- Library Collection RecordSummary Robust calibration of hydrological models, driven by gridded precipitation data derived from either Regional Climate Models or statistical downscaling of General Circulation Models, is…Publication Date 2008
- groundwater
- recharge
- precipitation
- distribution
- Africa
- rainfall
- hydrology
- climate change
- soil moisture
- Africa
- Library Collection RecordSummary The Okavango basin comprises the Cuito and Cubango active catchment areas in Angola, in addition to the Kavango-Okavango non-active catchment in northern Namibia and Botswana. The Okavango…Publication Date 2006
- Okavango River
- Livelihoods
- economic development
- Natural Environment
- Botswana
- Namibia
- Angola
- socio-economic aspects
- eco - tourism
- land use
- degradation
- ecosystem ecology
- ecosystem dynamics
- Africa
- Library Collection RecordThe late Cenozoic climate of Africa is a critical component for understanding human evolution. African climate is controlled by major tectonic changes, global climate transitions, and local…Publication Date 2007
- human evolution
- Tectonics
- Orbital forcing
- Africa
- climate change
- palaeoclimate
- Africa
- Library Collection RecordGlobal climate change, linked to astronomical forcing factors, has been implicated in faunal evolutionary change in equatorial Africa, including the origin and diversification of hominin lineages.…Publication Date 2007
- Hominin evolution
- Pliocene
- East Africa
- Baringo
- Tugen Hills
- Precession
- Orbitally forced climate change
- Diatoms
- palaeobotany
- climate change
- Africa
- Library Collection RecordThis paper provides a reappraisal of contemporary perspectives on climate change in southern Africa's Okavango Delta sub-region by drawing on time-line evidence from historical/archival records…Publication Date 2008
- Bush-encroachment
- desiccation
- deterioration
- Human interventions
- wetland
- climate change
- remote sensing
- hydrology
- rainfall
- Africa
- Library Collection RecordA number of studies have begun to show the large impact that pastoralism has on African savanna ecosystems. Here we look at the impact of abandoned settlements on the distribution of the large…Publication Date 2008
- pastoralism
- Sedentarization
- primary succession
- Nutrient hotspots
- community
- land use
- Abandoned lands
- vegetation dynamics
- Africa
- Library Collection RecordBiodiversity is a critical component of the natural environment and the protection of it often meant the displacement of local communities in developing countries. The Richtersveld National Park (…Publication Date 2007
- rangelands
- conservation
- Population crashes
- Herd recovery
- goats
- biodiversity
- socio-economic aspects
- national parks
- sheep
- pastoralism
- land use
- Africa
- Library Collection RecordThe phenology of three dominant and economically important tree species; Acacia erioloba, Acacia luederitzii and Acacia mellifera, all widespread in the Kalahari in Botswana, was studied at Tsabong (…Publication Date 2007
- Kalahari
- phenology
- Acacia luederitzii
- Acacia erioloba
- Acacia mellifera
- litter
- plant autecology
- climate change
- rainfall
- fodder production
- Africa
- Library Collection RecordThis paper introduces the Special Issue on Sustainable Land Use in Namaqualand which arose out of a conference held in the region in May 2005. It outlines the main themes and issues covered by 19…Publication Date 2007
- degradation
- Environmental history
- Karoo
- restoration
- semi-arid
- land reform
- sustainability
- land use
- restoration ecology
- socio-economic aspects
- politics
- subsistence agriculture
- Africa
- Library Collection RecordWe investigated the effects of rainfall and the number of animals on changes in vegetation and on the output of milk and meat from the communal areas of Namaqualand. Previously published short- and…Publication Date 2007
- climate change
- degradation
- desert
- Karoo
- livestock production
- Disequilibrium
- sustainability
- animal nutrition
- rainfall
- pastoralism
- subsistence agriculture
- animal production
- management
- Africa
- Library Collection RecordAdvanced Very High Resolution Radiometer (AVHRR), Normalized Difference Vegetation Index data (NDVI, 1 km2, 1985-2003) and modeled net primary production (NPP, 8 km2, 1981-2000) data were used to…Publication Date 2007
- monitoring
- AVHRR
- NDVI
- rain-use efficiency
- NPP
- Communal lands
- South Africa
- degradation
- land use
- remote sensing
- NDVI values
- mapping
- rainfall
- 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 RecordDegradation in semi-arid Karoo rangelands has been ascribed to over-utilization by livestock and variations in rainfall regime. The understanding of vegetation dynamics in confined plant-herbivore…Publication Date 2006
- African wild herbivore
- Herbivore exclosure
- plant functional type
- Protected area
- vegetation monitoring
- rangelands
- rangeland condition
- vegetation dynamics
- livestock
- grazing
- land use
- national parks
- rainfall
- monitoring
- Africa
- Library Collection RecordWe evaluate the possible effects of climate change on vegetation in Central and West Africa. We chose two climate scenarios from the IPCC Third Assessment Report, ECHAM3 with scenario B2 and HADCM3…Publication Date 2008
- vegetation model
- climate change
- Central and West Africa
- modelling
- global warming
- Africa
- Library Collection RecordFragmentation of the ecosystems of the earth into spatially isolated units has emerged as a primary component of global change. Often, fragmentation results from actions that are intended to enhance…Publication Date 2008
- fragmentation
- rangelands
- adaptation
- public policy
- Economic Aspects
- policies
- management
- land use
- Africa
- Library Collection RecordThe rich biodiversity of southern Africa has to date been relatively unimpacted by the activities of modern society, but to what degree will this situation persist into the 21st century? We use a…Publication Date 2008
- biodiversity
- southern Africa
- climate change
- land use change
- Land cover change
- Habitat loss
- conservation
- Millennium ecosystem assessment
- image
- CBD target
- Africa
- Library Collection RecordAs part of an investigation of land degradation in the South African Karoo, three types of fine sediment signatures (radionuclides, mineral magnetism and sediment geochemistry) were used to trace the…Publication Date 2007
- Sediment fingerprinting
- South African Karoo
- Erosion history
- Extreme events
- 137Cs and 210Pb
- land use
- soils
- management
- grazing
- fire
- livestock
- Africa
- Library Collection RecordTransfrontier conservation has taken Southern Africa by storm, where the modus operandi remains simple and intuitive: by dissolving boundaries, local benefits grow as conservation and development…Publication Date 2008
- Transfrontier conservation
- Neoliberalism
- Community-based natural resources management
- Livelihoods
- South Africa
- transfrontier parks
- conservation
- socio-economic aspects
- eco-tourism
- decision support systems
- economics
- policies
- land use
- Africa
- Library Collection RecordLand use change and livelihood systems are often analyzed separately or with one "driving "the other. This "driver-feedback "relationship has been buttressed by approaches to…Publication Date 2006
- land use
- Livelihoods
- Co-production
- South Africa
- Ghana
- Drivers of change
- socio-economic aspects
- Africa
- Library Collection RecordLand management in tropical woodlands is being used to sequester carbon (C), alleviate poverty and protect biodiversity, among other benefits. Our objective was to determine how slash-and-burn…Publication Date 2008
- savanna
- Tropical deciduous forest
- basal area
- Allometric equations
- Wood density
- soil bulk density
- Soil C stock
- biodiversity
- Shannon index
- Chronosequence
- land use
- carbon dioxide
- carbon sequestration
- socio-economic aspects
- management
- soil organic carbon
- Africa
- Library Collection RecordSouth Africa is poorly endowed with natural forests, and is heavily dependent on plantations of exotic forestry species to meet its timber needs. The first forest plantations of exotic trees were…Publication Date 2007
- forest plantations
- Hydrological impacts
- legislation
- Licensing
- South Africa
- hydrology
- land use
- monitoring
- decision support systems
- Africa
- Library Collection RecordElevated levels of nitrate in streamwaters draining forested catchments in the eastern escarpment area of South Africa are thought to occur as a result of land use change from natural high altitude…Publication Date 2006
- Nitrogen mineralisation
- nitrification
- nitrogen fixation
- nitrate leaching
- forest soils
- land use
- degradation
- grasslands
- pollution
- nutrient loads
- Soil Condition
- Africa
- Library Collection RecordThis study reviewed the distribution of ten common savanna trees in Namibia. Tree distributions were investigated in relation to bioclimatic, topographic and edaphic variables at a national scale.…Publication Date 2006
- biogeography
- climate change
- forestry
- Plant functional attributes
- southern Africa
- Vegetation history
- Africa
- Library Collection RecordClimate change factors interact to modify plant growth and development. The objective of this study was to evaluate the response to temperature of big bluestem (Andropogon gerardii Vitman)…Publication Date 2007
- big bluestem
- biomass
- development
- Growth Rates
- Partitioning
- Seed number
- climate change
- temperature
- plant autecology
- plant production
- carbon dioxide
- Africa
- Library Collection RecordThis paper describes a procedure for evaluating the desertification risk in threatened areas. The procedure is based on an eight-equation dynamic model of a generic human-resource system that can be…Publication Date 2008
- Desertification risk
- System Dynamics
- Alternative long-term states
- desertification
- modelling
- management
- grasslands
- sustainability
- land use
- Africa
- Library Collection RecordIn semiarid savannas of Southern Africa current land use practices and climate change may lead to substantial changes of vegetation structure in the near future, however uncertainty remains about the…Publication Date 2006
- Acacia erioloba
- Bush encroachment
- global change
- Grewia flava
- overgrazing
- seed dispersal
- shrub encroachment
- Southern Kalahari
- Spatial-explicit simulation model
- savanna
- land use
- grazing
- climate change
- vegetation dynamics
- cattle
- ecosystem ecology
- ecosystem dynamics
- rainfall
- fire ecology
- modelling
- conservation
- management
- carrying capacity
- biodiversity
- indigenous encroaching species
- Africa
- Library Collection RecordContinuous human population expansion pressure on conservation ecosystems restricts wildlife areas, and necessitates active management. In areas of changing land-use and increasing human-animal…Publication Date 2008
- Loxodonta africana
- Ranging behaviour
- Reaction time
- Cautious behaviour
- Response indicator
- GIS
- national parks
- management
- land use
- conservation
- Africa
- Library Collection RecordAnts are increasingly being recognized as useful tools for land managers to monitor ecosystem conditions. However, despite an abundance of studies on ant responses to both environmental disturbance…Publication Date 2006
- climate change
- conservation
- indicator
- invasive
- restoration ecology
- Surrogate
- insects
- Ants
- monitoring
- management
- Alien invasive species
- ecosystem dynamics
- Africa
- Library Collection RecordSoluble organic N and C were extracted from soils under long-term kikuyu grass pasture, annual ryegrass pasture and annual maize production using water, 0.5 M K2SO4 and 2 M KCl. Quantities…Publication Date 2006
- Arable
- grassland
- nitrate leaching
- nitrogen loss
- Soluble organic matter
- land use
- pasture management
- plant production
- soil fertility
- Africa
- Library Collection RecordThe Clean Development Mechanism (CDM) of the Kyoto Protocol of the United Nations Framework Convention on Climate Change allows a country that emits C above agreed-upon limits to purchase C offsets…Publication Date 2007
- soil carbon
- carbon sequestration
- Carbon markets
- carbon credits
- poverty reduction
- drylands
- West Africa
- climate change
- greenhouse gases
- agriculture
- Economic Aspects
- socio-economic aspects
- Africa
- Library Collection RecordPastoral communities in East Africa are facing considerable challenges arising from shifts in land tenure policy from communal to individual landholdings and high human population growth rates. Over…Publication Date 2006
- savanna
- Household model
- Kajiado District
- Subdivision
- policies
- communal farming
- pastoralism
- socio-economic aspects
- household income studies
- modelling
- ecosystem dynamics
- food security
- land use
- land reform
- Africa
- Library Collection RecordClimate is one of the most important factors determining the sustainability of agricultural production systems. More emphasis must be placed on understanding the influence of changing climate…Publication Date 2007
- sustainable agriculture
- climate variability
- climate change
- Agricultural weather policy
- climate
- agriculture
- animal production
- plant production
- Africa
- Library Collection RecordDeserts are known to mankind, but the term desertification has always been an elusive concept. It is now defined in the United Nations Convention to Combat Desertification (UNCCD) as land degradation…Publication Date 2007
- land degradation
- Land use and land cover changes
- overgrazing
- Biomass burning and atmospheric emissions
- Air Pollution
- Forest and woodland clearing
- wind erosion
- climate change
- degradation
- erosion
- land use
- grazing
- management
- Carbon Sink
- Africa
- Library Collection RecordLivestock production systems in Africa are experiencing rapid changes in structure and function due to increased demands for livestock products from a more prosperous and ever-increasing human…Publication Date 2008
- Methane
- livestock systems
- Livestock Populations
- climate change
- IPCC
- Africa
- cattle
- sheep
- goats
- greenhouse gases
- Africa
- Library Collection RecordWithin the Kyoto Protocol, the clean development mechanism (CDM) is an instrument intended to reduce greenhouse gas emissions, while assisting developing countries in achieving sustainable…Publication Date 2008
- climate change
- afforestation
- reforestation
- land use
- Spatial modeling
- trees
- forests
- carbon
- CDM-AR
- land use change
- greenhouse gases
- Sustainable development
- socio-economic aspects
- Carbon Sink
- grasslands
- savanna
- food security
- Africa
- Library Collection RecordThe Highveld region in South Africa is an important area for its food production for the nation, as 70% of country's cereal crops and 90% of the commercially grown maize is cultivated there. The…Publication Date 2008
- Agro-ecosystem
- climate change
- sustainability
- food security
- South Africa
- agriculture
- Africa
- Library Collection RecordGlobal warming risks from emissions of green house gases (GHGs) by anthropogenic activities, and possible mitigation strategies of terrestrial carbon (C) sequestration have increased the need for the…Publication Date 2006
- Ecosystem carbon budget
- carbon sequestration
- Reclaimed mine soil
- Disturbed soil
- mine rehabilitation
- soil organic carbon
- restoration ecology
- land use
- management
- carbon dioxide
- system ecology
- Africa
- Library Collection RecordFarm practices in the Sneeuberg Mountains, Karoo, South Africa are examined to assess their contribution to the development of the observed gullies and badlands. Data from the literature is augmented…Publication Date 2007
- erosion
- land degradation
- range management
- vegetation
- grazing
- Stock
- management
- degradation
- land use
- participatory rural appraisal
- livestock
- rehabilitation
- Africa