Rangeland Ecology & Management
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Displaying 51 - 100 of 2571 results
- Library Collection RecordNo abstract is available for this article.Publication Date 2012
- Africa
- Library Collection RecordQuestions: Is plant species richness, diversity and above-ground standing biomass enhanced after establishing exclosures on communal grazing lands? What factors influence the effectiveness of…Publication Date 2012
- biomass
- Edaphic variables
- native vegetation
- restoration
- Site variables
- Tigray
- Ethiopia
- Africa
- Library Collection RecordProtected areas constitute strategy for biodiversity conservation. Unfortunately, these sanctuaries of biodiversity are submitted to a high human pressure in Togo. This study carried out in the Alé…Publication Date 2012
- vegetation
- diversity
- Pressure
- management
- Togo
- Africa
- Library Collection RecordThe main long standing objectives of the land reform programme have being to address the imbalances in land access. At the same time, extending and improving the base for productive agriculture in…Publication Date 2012
- Poverty
- employment
- developing countries
- inequalities
- Expertise
- productivity
- Africa
- Library Collection RecordBush encroachment is an environmental problem in savanna ecosystems, but it is not yet clear whether it is more prevalent in communal or ranching grazing lands. This study investigates bush…Publication Date 2012
- communal grazing
- diversity
- ranching
- rangeland degradation
- soil clay
- savanna ecosystems
- Botswana
- Africa
- Library Collection RecordThe study focused on investigating the effects of different grazing ratios and stocking rate of cattle and goats under mixed species grazing on different species of plant. The experimental site was…Publication Date 2012
- Mixed-species grazing
- stocking rate
- grazing ratio
- cattle
- goats
- biomass
- Zimbabwe
- Africa
- Library Collection RecordIn most of African countries whose economy is heavily depending on rainfed agriculture, accurate estimation of the spatial and temporal distribution of rainfall and observing its trends are crucial…Publication Date 2012
- belg
- spatial and temporal variability
- rainfall trend
- Africa
- Ethiopia
- Library Collection RecordBiomass is considered a potential feedstock for many renewable energy production systems and interest especially in grass production has increased markedly in the last two decades. The present work…Publication Date 2012
- biomass
- grass
- harvesting
- yield
- Rate
- storage
- quality
- plant production
- Economic Aspects
- Africa
- Library Collection RecordThe arid and semi arid areas comprise a large percentage of the land area in Africa. Communities in these areas have over the years depended on livestock production for livelihood. Livestock has…Publication Date 2012
- Pastoralists
- transition
- vegetable farming
- Fertility Management
- drylands
- Kenya
- Africa
- Library Collection RecordThe effects of cutting frequency and levels of nitrogen application on quality of crop fractions of a degradedPanicum maximum pasture was investigated in 2001 at Nsukka, Nigeria. Cutting intervals…Publication Date 2012
- Mineral Composition
- cutting frequency
- Crude fibre
- ash content
- Â Panicum maximum
- pasture
- Nitrogen Fertilizer
- Nsukka
- Nigeria
- Africa
- Library Collection RecordTef [Eragrostis tef (Zucc.)Trotter] is an ancient and major cereal crop in Ethiopia. Increasing tef yield partly requires developing cultivars that are tolerant to low moisture supply. An experiment…Publication Date 2012
- tef
- Eragrostis tef
- grain yield
- drought tolerance indices
- Ethiopia
- Africa
- Library Collection RecordWe studied the effects of browsing on the plant architecture and volume-biomass relationships of three dominant dwarf shrubs – Artemisia herba-alba, A. mesatlantica and Teucrium mideltense â…Publication Date 2012
- allometric function
- Atlas Mountains
- nonlinear regression
- permanent plot
- plant architecture
- standing biomass
- Morocco
- Africa
- Library Collection RecordSpines in plants have evolved to reduce mammalian herbivory, and their main function may be to protect twigs more than photosynthetic tissue. Type and frequency of spines vary at different scales. We…Publication Date 2012
- Acacia tortilis
- browsing
- feeding rate
- functional response
- Plant defence
- Africa
- Library Collection RecordSpines in plants have evolved to reduce mammalian herbivory, and their main function may be to protect twigs more than photosynthetic tissue. Type and frequency of spines vary at different scales. We…Publication Date 2012
- Africa
- Library Collection RecordDescription not available.Publication Date 2012
- Africa
- Library Collection RecordDescription not available.Publication Date 2012
- Africa
- Library Collection RecordChanges in the composition of plant functional type (PFT) activities are expected to accompany a changing climate. In tropical montane grasslands, such changes are predicted to follow shifts in the…Publication Date 2012
- Africa
- Library Collection RecordDescription not available.Publication Date 2012
- Africa
- Library Collection RecordFire has long been regarded as a major determinant of ecosystem structure and function within African savannas. Improvements in fire detection, mapping and recordings of fire activity over the past…Publication Date 2012
- Africa
- Library Collection RecordDescription not available.Publication Date 2012
- Africa
- Library Collection RecordDescription not available.Publication Date 2012
- Africa
- Library Collection RecordDescription not available.Publication Date 2012
- Africa
- Library Collection RecordAn important consideration in designing and managing forage systems is the knowledge of the physiological response mechanisms to cutting, especially when water deficit conditions are prevailing. The…Publication Date 2012
- Africa
- Library Collection RecordThe thesis seeks to understand how emerging communities borne out of the Fast Track Land Reform Programme in Zimbabwe have been able to ensure social cohesion and social service provision using farm…Publication Date 2012
- agriculture
- Emerging communities
- Challenges
- Fast Track Land Reform Programme
- Economic crisis
- social networks
- Farm committees
- Irrigation committees
- Health committees
- Mazowe district
- socio-economic aspects
- subsistence agriculture
- rural areas
- politics
- management
- Zimbabwe
- Africa
- Library Collection RecordThis article evaluated the plausible causes of floods and droughts, the relative roles of large-scale climate variability in regional environmental trends, and the prospects for the future of the…Publication Date 2012
- climate variability
- Trend Analysis
- Empirical SPI
- BEST Index
- PDO Index
- Africa
- Library Collection RecordUganda is vulnerable to climate change as most of its agriculture is rain-fed, agriculture is also the backbone of the economy, and the livelihoods of many people depend upon it. Variability in…Publication Date 2012
- climate risks
- crop production
- seasonal characteristics
- agrometeorological
- Uganda
- Africa
- Library Collection RecordThe Bahima ethnic group have been crossbreeding autochthonous Ankole with Holstein-Friesian cattle. Separate herds (pure Ankole and crossbreds) are common. A survey was conducted to characterize…Publication Date 2012
- Ankole cattle
- Indigenous knowledge
- pasture composition
- pasture management
- Uganda
- Africa
- Library Collection RecordIt has been proposed that, across broad spatial scales, climatic factors are the main drivers of ecological patterns, while biotic factors are mainly important at local spatial scales. However, few…Publication Date 2012
- diversity patterns
- herbivory
- plant–herbivore interactions
- Quaternary climate change
- resource–consumer relationships
- savanna species
- Speciation
- Africa
- Library Collection RecordTermites and large herbivores represent important functional groups in savanna ecosystems. Termites affect vegetation far beyond their mounds. In addition, large herbivores feed selectively on…Publication Date 2012
- disturbance
- landscape heterogeneity
- large herbivores
- Macrotermes
- plant–herbivore interaction
- soil fertility
- temporal dynamics
- Uganda
- Africa
- Library Collection Record2010, Earthscan Publications, Dunstan House, 14a St Cross St, London, EC1N 8XA, UK Hardcover, 360 pp ISBN 9781844079162. Price £60.00Publication Date 2011
- Africa
- Library Collection RecordRodent-mediated dispersal of Acacia seeds in Kalahari savannah rangelands – implications for bush encroachmentPublication Date 2011
- rodents
- Acacia
- seeds
- savannah
- rangelands
- Bush encroachment
- ecosystem ecology
- Africa
- Library Collection RecordThe presence of grazers on grazing lawns in East Africa and North America often alters nitrogen cycling and availability. Grazing lawns can be defined as areas where grasses are kept in a short,…Publication Date 2011
- African savannah
- Grazers
- grazing lawns
- national park
- nitrogen
- soils
- management
- Africa
- Library Collection RecordMopane savannah is one of the predominant dry vegetations of southern Africa. Despite the extensive number of previous studies, there are few quantitative descriptions of the vegetation types where…Publication Date 2011
- Colophospermum mopane
- Combretaceae
- savannah
- Zambezi Valley
- species richness
- biodiversity
- Zimbabwe
- Africa
- Library Collection RecordPrevious studies suggest that forest regeneration in grasslands is often slow because of grass competition and fire and that regeneration may be dependent on fire-resistant savannah trees. To examine…Publication Date 2011
- forest regeneration
- grasslands
- savannah trees
- species diversity
- woody plants
- competition
- fire ecology
- restoration ecology
- Kibale National Park
- Uganda
- Africa
- Library Collection RecordThis study deals with the phenotypic polymorphism of twenty accessions of Cenchrus ciliaris L. (buffelgrass) collected in various climatic areas of Tunisia. Six seedlings per accession were…Publication Date 2011
- arid zones
- Cenchrus ciliaris
- morphometry
- multivariate analysis
- phenotype
- grasslands
- Tunisia
- Africa
- Library Collection RecordGrasses (Poaceae) are the largest family of vascular plants in Burkina Faso with 254 species. In the savannahs they are the most important family in terms of abundance and species richness, in other…Publication Date 2011
- ecological niche models
- macroecology
- plant functional traits
- Poaceae
- Sahel
- savannah
- phytogeography
- modelling
- grasslands
- ecosystem ecology
- C4 grasses
- Africa
- Library Collection RecordCreated in 1968 in Zimbabwe, the Gonarezhou National Park (GNP) is a protected area dedicated to the conservation of wildlife resources. This paper offers insights in wildlife management and issues…Publication Date 2011
- management
- game
- climate change
- wildlife management
- socio-economic aspects
- Zimbabwe
- Africa
- Library Collection RecordRainfall variability is a key constraint to agricultural production, livelihoods and economic growth in many developing countries. This is likely to be exacerbated in many places as rainfall…Publication Date 2011
- agriculture
- water storage
- Poverty
- Rural
- socio-economic aspects
- climate change
- Sub-Saharan Africa
- Africa
- Library Collection RecordThe relevance of land-use planning tools such as the Land Use and Allocation Plan (LUAP)is more than ever a necessity to face challenges of natural resources degradation (water, soil and forest) the…Publication Date 2011
- socio-economic aspects
- degradation
- agriculture
- biodiversity
- climate change
- food security
- Senegal
- Senegal
- Africa
- Library Collection RecordInformation at local scale on impacts of climate variability and climate change are crucial for planning of adaptation strategies and practices in agriculture. There is a diversity of approaches and…Publication Date 2011
- climate change
- carbon sequestration
- monitoring
- soils
- degradation
- socio-economic aspects
- Impact assessment
- hydrology
- Africa
- Library Collection RecordAbstract not avaiable.Publication Date 2011
- biodiversity
- climate change
- global warming
- rainfall
- Nigeria
- Africa
- Library Collection RecordTef [Eragrostis tef (Zucc.) Trotter] occupies two million hectares of land each year, which accounts for 28% of the total acreage. However, its productivity is constrained by drought. Development of…Publication Date 2011
- drought
- Drought Resistance
- Eragrostis pilosa
- RILs
- tef
- plant breeding
- genotypes
- Ethiopia
- Africa
- Library Collection RecordAgricultural policy formulation in Sub Saharan Africa has been dominated by research initiatives that alienated other farmers and stakeholders. The Sub Saharan Africa Challenge Programme (SSA CP)…Publication Date 2011
- policy
- smallholders
- partnerships
- agriculture
- innovations
- stakeholders
- politics
- Sub Saharan Africa Challenge Programme
- Africa
- Library Collection RecordThis study reports on a simulation growth model developed to predict daily gain (DG) of dairy cattle heifers. The model input parameters are gross energy (GE), ash, crude protein (CP), organic matter…Publication Date 2011
- elephant grass
- Daily Gain
- Supplement
- desmodium
- lablab
- Dairy cattle
- diet selection
- modelling
- Uganda
- Africa
- Library Collection RecordPsidium guajava (guava) is recognised as the third most important invasive alien plant species in the moist savanna biome of South Africa, Lesotho and Swaziland. The cost of initial clearing of alien…Publication Date 2011
- Alien plant control
- herbicides
- picloram
- fluroxypyr
- bromacil
- tebuthiuron
- imzapyr
- guava
- economics
- invasive plants
- Alien invasive species
- Economic Aspects
- herbicides
- Swaziland
- Africa
- Library Collection RecordOver the past half-century, agricultural production gains have provided a platform for rural and urban economic growth worldwide. In African countries, however, agriculture has been widely assumed to…Publication Date 2011
- farming
- scaling-up
- Social capital
- sustainable intensification
- Sustainable development
- soil conservation
- soils
- sustainability
- conservation
- agriculture
- policies
- management
- Africa
- Library Collection RecordTef, Eragrostis tef (Zucc.) Trotter, is the main Ethiopian cereal grown on 2.5 million ha annually, and serving as a staple food grain for more than 50 million people. The major constraints in tef…Publication Date 2011
- seed
- management
- dissemination
- innovation
- Quncho
- seed system
- tef Introduction
- pasture seed
- Ethiopia
- pastures
- Ethiopia
- Africa
- Library Collection Record1. Invasive alien plant species pose a severe threat to native plant communities world-wide, especially on islands. While many studies focus on the direct impact of alien plants on native systems,…Publication Date 2011
- Alien invasive species
- ecosystem ecology
- indirect interactions
- inselbergs
- interaction connectance
- invasion ecology
- Invasive alien species
- plant communities
- pollination webs
- Seychelles Islands
- Indian Ocean
- Africa
- Library Collection Record1. We introduce a novel method that analyses environmental filtering of plant species in a geographic and phylogenetic context. By connecting species traits with phylogeny, traits with environment,…Publication Date 2011
- coastal marsh plain
- community ecology
- determinants of plant community diversity and structure
- functional traits
- phylogenetic clustering
- phylogenetic signal
- RLQ analysis
- spatial analysis
- species assemblage
- statistical graphics
- ecosystem ecology
- Algeria
- Africa
- Library Collection Record1. Ecologists debate the importance of neutral versus niche-based explanations for patterns of species coexistence and whether small-scale data can inform ecological understanding of communities,…Publication Date 2011
- community analysis
- ecosystem ecology
- rainfall
- soil nutrients
- modelling
- abiotic gradients
- community assembly theory
- environmental filters
- grass phylogeny
- K-statistic
- plant population and community dynamics
- plant species richness
- species coexistence
- structural equation modelling
- trait dispersion
- Tanzania
- Africa