Rangeland Ecology & Management
Get reliable science
Toggle Search
Result Type
Collection
Keywords
Document Type
Displaying 201 - 250 of 692 results
- Library Collection RecordSavannahs are widespread vegetation type in Sudanian zone of Africa. As protected areas are often assumed to be the best way to conserve biodiversity, we assessed the effectiveness of the Pendjari…Publication Date 2013
- conservation
- diversity
- savannah
- Structure
- Woody Species
- management
- ecosystem ecology
- Africa
- Library Collection RecordLarge mammalian herbivores are well recognized to play important roles in regulating woody cover and biomass in savannas, but the extent to which browsing ungulates are capable of regulating woody…Publication Date 2013
- browsing
- dik-dik
- elephant
- mortality
- plant-herbivore interactions
- recruitment
- shrub encroachment
- top-down control
- ecosystem ecology
- savanna
- biomass
- Plant Productivity
- management
- Africa
- Library Collection RecordHerbivores influence the structure and composition of terrestrial plant communities. However, responses of plant communities to herbivory are variable and depend on environmental conditions,…Publication Date 2013
- abiotic gradients
- community structure
- exclosure experiment
- herbivory
- livestock-wildlife interactions
- plant species richness
- plant-herbivore interactions
- wildlife decline
- ecosystem ecology
- vegetation dynamics
- soils
- rainfall
- biodiversity
- East Africa
- Library Collection RecordAbstract Protected areas such as national parks are often assumed to be the best way to conserve plant diversity and maintain ecosystem composition and structure. To evaluate this assertion, we…Publication Date 2011
- conservation
- management
- restoration ecology
- management
- grasslands
- data analysis
- biodiversity
- land use
- vegetation dynamics
- grazing
- species richness
- national parks
- Tunisia
- Africa
- Library Collection RecordHierarchical classification based on proportional species composition of the grass layer was used to identify and classify semi-arid rangeland into range types. The relation between range types…Publication Date 1994
- rangelands
- classification
- savanna
- grasslands
- monitoring
- management
- Africa
- Library Collection RecordTeff (Eragrostis tef (Zucc.) Trotter) is a major food crop in Ethiopia and Eritrea. It is well adapted to Vertisols. Yields are low (around 1000 ‰kg/ha) despite fertilization with urea and…Publication Date 2011
- agriculture
- grasslands
- soicio-economic aspects
- food security
- fertilizer
- soil fertility
- zinc
- management
- Ethiopia
- Africa
- Library Collection RecordWind erosion is a major contributor to desertification in the Sahel. Although three effective countermeasures for wind erosion (i.e. ridging, mulching with post-harvest crop residue, and windbreaks)…Publication Date 2011
- erosion
- desertification
- Sahel
- desert grasslands
- management
- soil fertility
- agriculture
- rainfall
- Soil Condition
- Sahel
- West Africa
- Library Collection RecordSummary In savannas, degrading trends such as increasing woody cover are caused by livestock ranging. Hence, identifying sustainable utilisation intensities is crucial for range management. However,…Publication Date 2000
- ungulate herbivory
- semiarid rangelands
- degradation
- shrub encroachment
- savanna vegetation
- savanna
- sustainability
- management
- rangelands
- vegetation dynamics
- plant production
- animal production
- Africa
- Library Collection RecordAbstract: We used spatial and statistical analyses to identify and prioritize broad areas for conservation attention in the northern Zululand region of KwaZulu-Natal, South Africa. We attempted to…Publication Date 2000
- conservation
- biodiversity
- ecosystem services
- endemic species
- Africa
- Library Collection RecordAbstract. South Africa has an important responsibility to global biodiversity conservation, but a largely inadequate conservation area network for addressing this responsibility. This study employs a…Publication Date 2001
- biodiversity
- conservation
- savanna
- grasslands
- land use
- Africa
- Library Collection RecordHerbaceous and woody alien plants visible from a moving vehicle were recorded along 1 km roadside transects at 5 km intervals over a distance of 5869 km in the semi-arid and arid Fynbos, Succulent…Publication Date 1998
- Alien invasive species
- rainfall
- ecosystem ecology
- soil classification
- land use
- savanna
- grasslands
- biodiversity
- Phytosociology
- Africa
- Library Collection RecordAim To determine whether patterns of avian species turnover reflect either biome or climate transitions at a regional scale, and whether anthropogenic landscape transformation affects those patterns…Publication Date 2004
- Avian species turnover
- ?-diversity
- biome
- heterogeneity
- spatial congruence
- birds
- biodiversity
- vegetation dynamics
- ecosystem ecology
- climate
- landscape ecology
- land use
- Africa
- Library Collection RecordAbstract Aims To identify approaches to improve our understanding of, and predictive capability for, mixed tree–grass systems. Elucidation of the interactions, dynamics and determinants, and…Publication Date 2003
- Coexistence
- competition
- facilitation
- modelling
- primary production
- savanna
- shrubland
- grasslands
- rangelands
- tree–grass ratios
- ecosystem dynamics
- management
- Africa
- Library Collection RecordWe investigated a variety of habitat characteristics along a land-use gradient in an attempt to determine which factors may have influenced the population decline of redwing francolin, Francolinus…Publication Date 2001
- grasslands
- grazing
- habitat
- redwing francolin
- pasture management
- birds
- ecology
- biodiversity
- fire
- Africa
- Library Collection RecordAbstract The effects of intensive commercial livestock farming on the distribution and habitat use of the redwing francolin, Francolinus levaillantii, was investigated to identify habitat constraints…Publication Date 2000
- grasslands
- habitat
- home range
- redwing francolin
- agriculture
- ecology
- management
- fire
- birds
- Africa
- Library Collection RecordA sampling system was devised and used from 1992 to 1996 in annual grassland and open woodland of the south-west Kenyan Rift Valley. The monitoring was designed to detect vegetation changes…Publication Date 2000
- range assessment
- savanna
- transect
- vegetation
- woodland
- ecosystem ecology
- land-use
- management
- rangeland condition
- monitoring
- livestock
- Africa
- Library Collection RecordTwenty-four grassland fragments were established in an area of high botanical diversity planted with Pinus patula plantations. This area is representative of the eastern Drakensberg escarpment,…Publication Date 1999
- afforestation
- biodiversity
- conservation
- grassland
- metapopulations
- Africa
- Africa
- Library Collection RecordSummary * 1The influence of botanical composition on annual phytomass production of a semi-arid grassland in response to precipitation was tested with a 19-year experiment. Three compositional states…Publication Date 2001
- basal cover
- biodiversity
- plant production
- precipitation-use efficiency
- rainfall
- grasslands
- rangeland condition
- modelling
- runoff
- Africa
- Library Collection RecordIn this study, we present a stochastic landscape modeling approach that has the power to transfer and integrate existing information on vegetation dynamics and hydrological processes from the small…Publication Date 2009
- modelling
- vegetation dynamics
- landscape ecology
- hydrology
- commercial agriculture
- subsistence agriculture
- grazing
- plant production
- runoff
- drought
- rainfall
- management
- Namibia
- Africa
- Library Collection RecordAerial photographs are a type of remote sensing data that are especially valuable for rangeland applications. Advantages of these data include relative ease of interpretation and acquisition,…Publication Date 2003
- remote sensing
- Aerial Photographs
- rangeland condition
- management
- Africa
- Library Collection RecordAbstract Species diversity and community structure indices (richness, diversity and evenness) are typically derived from contemporary biological survey atlases to identify conservation areas or to…Publication Date 2002
- biodiversity
- conservation
- ecosystem ecology
- modelling
- land use
- Africa
- Library Collection RecordSpatial prioritizations and gap analyses are increasingly undertaken to allocate conservation resources. Most spatial prioritizations are conducted without specifying the conservation instruments to…Publication Date 2011
- Conservancy
- Community conservation
- Effectiveness
- Gauteng
- off-reserve conservation
- optimal instrument mix
- conservation
- management
- Eastern Cape
- South Africa
- Library Collection RecordThe African Wildlife Foundation (AWF) has developed and applied a landscape-scale conservation planning methodology in eight priority conservation landscapes in Africa, areas we call African…Publication Date 2009
- conservation
- biodiversity
- stakeholders
- socio-economic aspects
- Africa
- Library Collection RecordThis paper provides a summary of our current understanding of the key drivers of N2O emissions from soil in temperate and tropical, natural and agricultural ecosystems. These drivers are substrate…Publication Date 2000
- agricultural soils
- Natural soils
- N fertiliser
- N deposition
- soil water
- temperature
- greenhouse gases
- soil
- agriculture
- soil fertility
- management
- Africa
- Library Collection RecordLivelihood security in Eastern and Southern Africa is strongly dependent on rainfall distribution and land management practices among smallholder farmers. Over 95 % of the land used for food…Publication Date 2000
- rainfall
- land use
- management
- subsistence agriculture
- hydrology
- runoff
- Africa
- Library Collection RecordMajor problems are experienced in South Africa due to the invasion of non-indigenous or alien species of terrestrial plants in several catchments. Alien invaders are estimated to use approximately 6,…Publication Date 2000
- Alien invasive species
- hydrology
- drought
- management
- Africa
- Library Collection RecordThis paper provides an analysis of the ecological ideas which underpin policies of elephant management and ivory trading in African elephant range states. Increasingly, the discussion surrounding the…Publication Date 2003
- Elephants
- culling
- Ivory
- CITES
- savanna
- non-equilibrium
- animal production
- ecology
- economics
- management
- Africa
- Library Collection Record`Vegetation thickening' often refers to an increasing shrub and tree density on many grazed rangelands, woodlands and forests that may or may not have supported such woody plant populations in…Publication Date 2001
- carbon stocks
- emissions
- land use change
- sequestration
- savanna
- Bush encroachment
- climate change
- Kyoto Protocol
- restoration ecology
- carbon dioxide
- carbon sequestration
- Carbon Sink
- management
- greenhouse gases
- Africa
- Library Collection RecordIn this volume in honour of John Rogers we propose a new way of looking at Gondwana and we urge our colleagues everywhere to join us in this venture. The Gondwana Alive Corridors provide a way of…Publication Date 2003
- Gondwana Alive Corridors
- Sixth Extinction
- biodiversity
- consilience
- Earth System Science
- palaeobotany
- ecology
- Africa
- Library Collection RecordConcern for the potential global change consequences of increasing atmospheric CO2 has prompted interest in the development of mechanisms to reduce or stabilize atmospheric CO2. During the next…Publication Date 2004
- carbon sequestration
- Degraded lands
- Fossil-fuel by-products
- soil organic matter
- land restoration
- carbon dioxide
- restoration ecology
- mine rehabilitation
- degradation
- management
- pollution
- soil fertility
- Africa
- Library Collection RecordThe main conclusions of the research project on soil erosion and sedimentation in Swaziland are as follows. (1) Soil erosion has worsened over the last 20 years. The proportion of an 1800 km2 study…Publication Date 1997
- soil erosion
- Saprolite
- Socio-economics
- Erosion survey
- land tenure
- Swaziland
- soils
- erosion
- management
- Africa
- Library Collection RecordIntensification of agriculture in the tropics has resulted from a shortage of farmland and insufficient food production to satisfy the needs of an expanding population. Many tropical farmers are…Publication Date 1997
- Decomposition
- Decomposer biota
- biodiversity
- soil fertility
- Agricultural intensification
- Biotic interactions
- Ecosystem function
- Africa
- Library Collection RecordThis paper argues that, at present, ecotourism can contribute to safeguard biodiversity and ecosystem functions in developing countries, even though meeting the requirements for ecotourism is…Publication Date 1999
- biodiversity
- cost-benefit analysis
- Ecosystem functions
- eco-tourism
- Rainforests
- ecosystem dynamics
- ecosystem services
- conservation
- Africa
- Library Collection RecordSouth Africa is rich in biological diversity, but measures to conserve this heritage are under-funded and are of relatively low priority at national level. Part of the problem is that the social…Publication Date 2003
- Value of biodiversity
- contingent valuation
- Fynbos
- climate change
- biodiversity
- socio-economic aspects
- 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 RecordMiombo woodlands are crucial to the livelihoods of rural people throughout southern, eastern and central Africa. This paper describes a dynamic simulation model of key ecological processes in miombo…Publication Date 2000
- management
- economics
- ecosytem ecology
- grazing
- fire
- grasslands
- carbon sequestration
- hydrology
- land use
- Africa
- Library Collection RecordWe contend diets and habitats that allow animals to select among alternatives enable individuals to better meet needs for nutrients and to better cope with toxins. All plants contain toxins, and the…Publication Date 2003
- foraging ecology
- herbivory
- biodiversity
- conservation biology
- toxins
- diet selection
- toxicity
- nutrition
- grazing
- Africa
- Library Collection RecordNatural products are becoming more important in modern-day society as man is moving away from synthetic products, which can be detrimental to the environment and human health. Scientific research on…Publication Date 2002
- Traditional healing
- Ethnobotany
- Amaryllidaceae
- Hyacinthaceae
- Bulbs
- medicinal plants
- biodiversity
- Africa
- Library Collection RecordComputer-based methods of integrated modelling and assessment provide an important means for reviewing policy choices in natural resource management (NRM). Research in support of NRM needs to address…Publication Date 2004
- Integrated modelling and assessment
- Systems framework
- natural resource management
- Participatory research
- modelling
- management
- Africa
- Library Collection RecordCriteria and indicators (C&I) have become primary tools in implementing the principle of sustainable resource management. To carry out this principle, it is necessary to develop methodologies…Publication Date 2003
- sustainability
- Multi-criteria analysis
- Criteria and indicators
- Cognitive mapping
- management
- decision support systems
- mapping
- Africa
- Library Collection RecordMosaics of natural forest and grassland tracts in sub-Saharan Africa provide differences in woody species biodiversity. These mosaics are of considerable interest as they are a major biodiversity…Publication Date 2002
- biodiversity
- Shannon index
- tropical forest
- grassland
- burning
- spatial variability
- Uganda
- grasslands
- fire ecology
- management
- Africa
- Library Collection RecordInvasive alien plants are consumptive water-users, and may have reduced river flows in South Africa by about 6.7% according to a broad-scale study. An effective programme to bring the invasions under…Publication Date 2002
- Invasions
- Resource Economics
- forestry
- Commercial plantations
- Catchment management
- Alien invasive species
- Economic Aspects
- management
- Africa
- Library Collection RecordWays of [`]tracking' environmental fluctuations could be of value in limiting drought-induced mortality and increasing output. We examined a range of tracking policies, designed to tackle…Publication Date 1998
- management
- drought
- rainfall
- animal production
- Economic Aspects
- stocking rates
- subsistence agriculture
- pastoralism
- Africa
- Library Collection RecordWe constructed a simple simulation model (SESS) of the dynamics of forage growth and standing crop and cattle production to evaluate the ecological sustainability of management alternatives for…Publication Date 2003
- models
- simulation
- Grazinglands
- rangelands
- Semi-arid zones
- ANP
- sustainability
- range condition
- grazing
- Cattle reproduction
- forage quality
- cattle
- management
- plant production
- animal production
- soils
- rainfall
- rangeland condition
- Africa
- Library Collection RecordEast Africa contains areas with some of the greatest large mammal biodiversity on the planet. These areas are key natural resources for the economic development of the region. They are also key areas…Publication Date 2003
- Agro-pastoralism
- savanna
- simulation
- Dietary energy
- cash flow
- Ngorongoro Conservation Area
- pastoralism
- cattle
- game farming
- biodiversity
- socio-economic aspects
- ecosystem dynamics
- modelling
- household income studies
- Africa
- Library Collection RecordThe development of cropping systems simulation capabilities world-wide combined with easy access to powerful computing has resulted in a plethora of agricultural models and consequently, model…Publication Date 2001
- systems approach
- modelling
- Farmer interactions
- climate
- management
- agriculture
- policies
- decision support systems
- Africa
- Library Collection RecordWhile community-based natural resource management (CBNRM) now attracts widespread international attention, its practical implementation frequently falls short of expectations. This paper contributes…Publication Date 1999
- socio-economic aspects
- community-based natural resource management
- management
- Africa
- Library Collection RecordTo account for the failure of state-driven development projects, policy makers and planners have tended to blame communal farmers for adhering to outmoded traditional values and practices.…Publication Date 1998
- culture
- politics
- land
- development
- tradition
- modernity
- hybridity
- socio-economic aspects
- land use
- management
- Sustainable development
- Africa
- Library Collection RecordThis paper draws on recent empirical studies of changing land and water use in semi-arid Africa to identify socioeconomic and political dynamics and discusses their implications for current policy…Publication Date 2003
- Decentralization
- land tenure
- Mali
- Kenya
- Botswana
- South Africa
- land reform
- land use
- socio-economic aspects
- politics
- policies
- management
- Africa
- Library Collection RecordInteractions between fire regime, dispersal strategies and patch structure were examined as key issues for the management of floristic composition of grasslands, through a model that simulates the…Publication Date 2001
- grasslands
- fire management
- fire frequency
- Dispersal strategies
- colonization
- simulation model
- grassland
- fire ecology
- management
- vegetation dynamics
- biodiversity
- modelling
- seeds
- Africa
Pagination
- First page
- Previous page
- …
- 3
- 4
- 5
- 6
- 7
- …
- Next page
- Last page