Rangeland Ecology & Management
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Displaying 101 - 150 of 493 results
- 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 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 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 RecordAn important question in biodiversity studies is whether disturbances in ecosystems will cause a net loss of species or whether such losses can be compensated by replacement of other species. We use…Publication Date 2011
- compensation
- Ecosystem function
- grasslands
- Serengeti birds
- ecosystem ecology
- birds
- invertebrates
- fire ecology
- management
- Tanzania
- Africa
- Library Collection RecordArthropods are valuable biological indicators owing to strong relationships with primary producers. The supposition that arthropod-plant interactions are constant over seasons was tested using Mantel…Publication Date 2011
- arthropod community composition
- Bloemfontein Dry Grassland
- Mantel test
- plant community composition
- trophic interactions
- insects
- biological indicators
- plant production
- biodiversity
- ecosystem ecology
- grasslands
- Free State province
- South Africa
- Library Collection RecordInteractions between mature grass plants and grass seedlings have been found to be both facilitative and competitive. To examine the effects of aboveground and belowground competition on seedling…Publication Date 2011
- competition
- grass seedling
- soil depth
- seedlings
- grasslands
- plant production
- siol depth
- plant autecology
- grazing
- stocking rates
- management
- South Africa
- Library Collection RecordFire is a key driver in shaping and maintaining grasslands. Long-term exclusion of fire in moist grasslands has been attempted at Catchment IX (CIX) at Cathedral Peak since 1952. Vegetation was…Publication Date 2011
- Erica evansii
- Leucosidea sericea
- moist grasslands
- tree mortality
- fire ecology
- grasslands
- management
- species diversity
- KwaZulu-Natal
- South Africa
- Library Collection RecordRangelands occupy 50% of Earth’s land surface and thus are important in the terrestrial carbon (C) cycle. For rangelands and other terrestrial ecosystems, the balance between photosynthetic uptake of…Publication Date 2010-03-01
- climatic variability
- deserts
- functional change
- grasslands
- shrublands
- variability in carbon flux
- Library Collection RecordGrasslands and agroecosystems occupy one-third of the terrestrial area, but their contribution to the global carbon cycle remains uncertain. We used a set of 316 site-years of CO2 exchange…Publication Date 2010-01-01
- cropland
- ecosystem respiration
- grasslands
- gross primary reduction
- light-response function method
- net CO2 flux partitioning
- net ecosystem CO2 exchange
- Library Collection RecordPrescribed burning of aboveground biomass in tallgrass prairie is common and may influence dynamics and magnitudes of carbon (C) movement between the surface and atmosphere. Carbon dioxide (CO2)…Publication Date 2010-01-01
- conditional sampling
- fire
- grasslands
- Konza Prairie
- land management
- net ecosystem exchange
- Library Collection RecordNutrient controls of ecosystem pattern and process have been widely studied at the Jasper Ridge Biological Preserve, a well-studied California rangeland ecosystem. Here we review these studies, from…Publication Date 2010-01-01
- California rangelands
- carbon
- elevated CO2
- global change
- grasslands
- Jasper Ridge
- nitrogen
- nutrient limitation
- phosphorus
- Library Collection RecordKnowledge is poor of how fertilization affects birds in grasslands. We investigated the impact on birds of abandoned pastoral settlements that historically received very high levels of livestock dung…Publication Date 2010
- Diptera
- fertilization
- Insectivorous birds
- Masai Mara
- Pitfall traps
- Sweep netting
- birds
- Abandoned lands
- grasslands
- invertebrates
- fertilizer
- Kenya
- Africa
- Library Collection RecordAnts are a prominent invertebrate group used to assess ecological change in response to disturbance. Their application as a bioindicator group has been particularly widespread in Australia, and a…Publication Date 2010
- Ants
- grazing
- Bioindicator
- land management
- Global patterns
- insects
- grasslands
- rangeland condition
- disturbance
- management
- Australia
- Library Collection RecordGrasslands in South Africa have been extensively transformed and fragmented, but are poorly protected. Commercial afforestation poses a particular threat to grassland biodiversity because areas…Publication Date 2010
- Ecological network
- connectivity
- fragmentation
- agroforestry
- Grassland bird conservation
- grasslands
- conservation
- birds
- fire
- management
- ecosystem ecology
- South Africa
- Library Collection RecordProductivity and mortality of grass plants following drought may be controlled by interactions between defoliation and severity of the drought. Prudent grassland management might mitigate deleterious…Publication Date 2010
- fodder production
- rehabilitation
- tradeoff
- water stress
- drought
- grazing
- grasslands
- management
- plant production
- KwaZulu-Natal
- South Africa
- Library Collection RecordAtmospheric CO2 has more than doubled since the last glacial maximum (LGM) and could double again within this century, largely due to anthropogenic activity. It has been suggested that low [CO2]…Publication Date 2010
- elevated CO2
- fire
- Last Glacial Maximum
- Root
- savanna
- starch
- carbon dioxide
- climate change
- grasslands
- fire ecology
- elevated CO2
- management
- plant autecology
- plant community ecology
- plant production
- Africa
- Library Collection RecordHere we describe the fine root distribution of trees and grasses relative to soil nitrogen and water profiles. The primary objective is to improve our understanding of edaphic processes influencing…Publication Date 2010
- nitrogen
- root biomass
- savanna
- Trees and grasses
- water
- [delta]13C
- [delta]15N
- soils
- grasslands
- ecology
- ecosystem dynamics
- soil nutrition
- Kruger National Park
- South Africa
- Library Collection Record1. Grazing lawns are short grassland areas where intense grazing maintains grass in an early growth stage. These areas represent a source of high-quality forage for herbivores. However, as herbivores…Publication Date 2010
- grazing
- grasslands
- management
- plant production
- savanna
- vegetation dynamics
- climatic variability
- continuous stocking
- grazing systems
- intensively managed grasslands
- large herbivores
- primary production
- rainfall
- white rhino
- South Africa
- Library Collection RecordSouthern African savannas are mixed plant communities where C3 trees co-exist with C4 grasses. Here foliar ?15N and ?13C were used as indicators of nitrogen uptake and of water use efficiency to…Publication Date 2010
- stable isotopes
- soil nitrogen
- soil carbon
- aridity
- C3 plants
- C4 plants
- savanna
- Soil Condition
- grasslands
- water use efficiency
- rainfall
- plant autecology
- palaeobotany
- Africa
- Library Collection RecordAbstract Woody plant increase in grassy biomes has been widely reported over the last century. Increases have been attributed to local drivers associated with land use change, such as heavy grazing…Publication Date 2010
- biome switch
- global drivers
- land use practices
- local drivers
- thicket expansion
- indigenous encroaching species
- grasslands
- grazing
- fire ecology
- carbon dioxide
- Aerial Photographs
- land use
- conservation
- commercial agriculture
- communal farming
- stocking rates
- South Africa
- Library Collection RecordGrazing with livestock is a common feature of nature and rangeland management. Although both aim at different, seemingly opposing goals, i.e. maintenance of biodiversity values versus maximization of…Publication Date 2010
- grazing capacity
- model
- Nature conservation management
- forage
- livestock
- forage quality
- conservation
- management
- biodiversity
- animal production
- grazing
- grasslands
- soils
- erosion
- animal nutrition
- Forage Quantity
- modelling
- Library Collection RecordLand used for agricultural production can contribute significantly to greenhouse gas (GHG) emissions; however, there is very little information on the role of management and land use change in…Publication Date 2010
- management
- climate change
- carbon dioxide
- greenhouse gases
- grasslands
- pasture management
- Africa
- Library Collection RecordAbstract Burning is commonly used in savannas to stimulate grass regrowth for grazing ungulates. We recorded the relative use of burns occurring at different stages in the seasonal cycle, as well as…Publication Date 2010
- burned grassland
- faecal nitrogen
- faecal phosphorus
- fire management
- foraging behaviour
- Hippotragus niger
- fire ecology
- grasslands
- savanna
- forage quality
- diet selection
- grazing
- foraging ecology
- nutrition
- South Africa
- Library Collection RecordInvasive plants have invaded swathes of grasslands in Lake Nakuru National Park thus necessitating the Park management to institute measures to control them. Despite this, information on the status…Publication Date 2010
- biomass
- crude protein
- density
- forage
- grasslands
- invasive plants
- management
- ecosystem ecology
- Forage Quantity
- forage quality
- Kenya
- Africa
- Library Collection RecordSoil restoration is a means of combating desertification in semi-arid and arid parts of the world. There, vast areas of the cropped soil degrade, particularly because of the loss of organic matter.…Publication Date 2010
- carbon sequestration
- grasslands
- pasture management
- soil organic carbon
- management
- restoration ecology
- soils
- degradation
- South Africa
- Library Collection Record1. Life table response experiment (LTRE) analyses have been widely used to examine the sources of differences in the long-term deterministic growth rate (r = log ?) of stage-structured populations…Publication Date 2010
- Anthyllis vulneraria
- climate change
- life table response experiment (LTRE)
- population growth
- stochastic elasticities
- vegetation dynamics
- fertility
- plant production
- soil depth
- grasslands
- Library Collection RecordQuestions: Can prescribed fire restore C4 perennial grasses in grassland ecosystems that have become dominated by fire-resistant C3 shrubs (Prosopis glandulosa) and C3 grasses? Do fires in different…Publication Date 2010
- burning
- fire ecology
- Herbaceous composition
- mesquite
- prescribed fires
- savanna
- species diversity
- woody plant
- restoration ecology
- fire ecology
- management
- grasslands
- ecosystem ecology
- C4 grasses
- Texas
- USA
- Library Collection RecordPast research has shown that changes in grazing-resistance traits may be associated with genetic changes in plant populations. Little is known about spatial genetic relationships within plant…Publication Date 2009-07-01
- apomixis
- genetic diversity
- grasslands
- grazing
- history
- Library Collection RecordPrecipitation-use efficiency (PUE) is a key determinant of aboveground net primary production (ANPP). We used long-term datasets to contrast ANPP and PUE estimates between northern (southeast Montana…Publication Date 2009-05-01
- climate change
- drought
- grasslands
- precipitation-use efficiency
- primary production
- rangelands
- water
- Library Collection RecordSouth Africa's moist grassland harbours globally significant biodiversity, supplies essential ecosystem services, supports crop and livestock agriculture, forestry and settlement, yet is poorly…Publication Date 2009
- agriculture
- animals
- biodiversity
- birds
- climate
- Conservation of Natural Resources
- crops
- Agricultural/growth & development
- ecosystem
- environment
- forestry
- insects
- mammals
- Poaceae
- Soil/analysis
- grasslands
- land use
- conservation
- management
- landscape ecology
- South Africa
- Library Collection RecordOn rangelands, uneven or unmanaged livestock distribution can adversely affect plant community composition, riparian function, or displace wildlife. These issues have historic precedents and are…Publication Date 2009
- range management
- grazing behaviour
- forage selection
- standing crop
- management
- grasslands
- plant production
- forage quality
- cattle
- grazing
- Burns
- Oregon
- USA
- Library Collection RecordSeed production, viability, dispersal, predation and seed banks of Themeda triandra were determined to assess the potential of the seeds of this indigenous species in the re-establishment of degraded…Publication Date 2009
- burning
- disturbance
- regeneration
- seeds
- vegetation dynamics
- grasslands
- seed banks
- degradation
- restoration ecology
- fire ecology
- South Africa
- Library Collection RecordLittle is known about the grass species type, composition and nutritive value in the semiarid savannas that sustain most of Swaziland's cattle population through the seven-month-long dry season…Publication Date 2009
- cumulative gas production
- organic matter degradability
- ruminant livestock
- tropical grass species
- nutrition
- cattle
- grasslands
- savanna
- grazing
- soils
- forage quality
- Swaziland
- Africa
- Library Collection RecordAbstract Recent IPCC projections suggest that Africa will be subject to particularly severe changes in atmospheric conditions. How the vegetation of Africa and particularly the grassland-savanna-…Publication Date 2009
- adaptive vegetation modelling
- aDGVM
- climate change
- demographic model
- DGVM
- fire
- process-based model
- savanna
- vegetation distribution
- grasslands
- modelling
- fire ecology
- disturbance
- carbon dioxide
- ecosystem ecology
- Africa
- Library Collection RecordSavannas are ecosystems characterized by the coexistence of woody species (trees and bushes) and grasses. Given that savanna characteristics are mainly formed from competition, herbivory, fire,…Publication Date 2009
- Spatially explicit
- soil moisture
- Cyclical transition
- Arid
- Mesic
- spatial autocorrelation
- shrub invasion
- Vegetation cycles
- Tree
- Bush
- grasslands
- savanna
- modelling
- vegetation dynamics
- animal impact
- fire ecology
- Soil Condition
- rainfall
- Library Collection RecordNo abstract availablePublication Date 2009
- grasslands
- ecology
- Klerksdorp
- South Africa
- Library Collection RecordHerbicides have been applied extensively on rangelands to reduce forbs that were considered undesirable, which has been assumed to lead to an increase in grass production and ultimately to an…Publication Date 2009
- biodiversity
- conservation
- average daily gain
- Cattle Performance
- Great Plains
- competition
- invasive species
- mixed prairie
- plant species composition
- vegetation dynamics
- weed control
- Weeds
- herbicides
- grasslands
- plant production
- animal production
- Oklahoma
- USA
- Library Collection RecordThis study looks at the impact of subdivision and sedentarization of pastoral lands on wildlife numbers and production in a savanna ecosystem of southern Kenya. The study uses aerial counts over a…Publication Date 2009
- land fragmentation
- rangelands
- Maasai
- settlement
- conservation
- land reform
- land use
- savanna
- ecosystem dynamics
- ecosystem ecology
- wildlife
- management
- grazing
- grasslands
- socio-economic aspects
- Kenya
- Africa
- Library Collection RecordThe Grassland Biome is currently one of the most threatened biomes in South Africa and is in dire need of a biomonitoring protocol. The components of ecological integrity in these ecosystems are,…Publication Date 2009
- Ecological Index value
- ecological integrity
- functional feeding groups
- insects
- SAGraSS method
- grasslands
- monitoring
- rangeland condition
- South Africa
- Library Collection RecordThe soil moisture regime may affect dormancy of seeds and their sensitivity to signals that promote germination. We studied the effect of moisture regime on the sensitivity to light of dormant Bromus…Publication Date 2009
- seeds
- germination
- plant autecology
- grasslands
- soil moisture
- Library Collection RecordSouthern African grasslands harbour diverse plant communities, and recent studies have revealed remarkable plant-pollinator interactions in this biome. However, there has been no attempt to study…Publication Date 2009
- Breeding systems
- grassland vegetation
- Mutualistic networks
- Plant-pollinator interactions
- Pollination systems
- grasslands
- insects
- ecology
- birds
- disturbance
- southern Africa
- Library Collection RecordNo abstract availablePublication Date 2009
- grasslands
- restoration ecology
- KwaZulu-Natal
- South Africa
- Library Collection RecordAbstract The advance of exotic tree and shrub species is one of the main threats to conservation of the last relicts of natural grassland in South America; however, control actions in the region are…Publication Date 2009
- control
- Invasive alien species
- Pinus halepensis
- restoration
- grasslands
- South American
- Library Collection RecordNo abstract availablePublication Date 2009
- grasslands
- soil nutrients
- nutrition
- Highveld
- South Africa
- Library Collection RecordGrassland biomass is suitable in numerous ways for producing energy. It is well established as feedstock for biogas production. The aim of this review is to summarize current knowledge on suitability…Publication Date 2009
- grasslands
- bioenergy
- Anaerobic digestion
- Biogas
- management
- greenhouse gases
- Economic Aspects
- climate change
- Germany
- Austria
- Europe
- Library Collection RecordIn this study, we asked the Ariaal herders of northern Kenya to answer 'why, what and how' they classified landscape, and assessed and monitored the biodiversity of 10 km2 of grazing land.…Publication Date 2009
- Anthropogenic indicators
- Ariaal
- biodiversity
- Indigenous knowledge
- Grazing suitability
- landscape classification
- Landscape potential
- traditional knowledge
- pastoralism
- monitoring
- grazing
- grasslands
- land use
- Soil Condition
- livestock
- conservation
- management
- Kenya
- Africa
- Library Collection RecordMany mechanisms have been suggested to explain the coexistence of woody species and grasses in savannas. However, evidence from field studies and simulation models has been mixed. Patch dynamics is a…Publication Date 2009
- Cyclical succession
- Spatiotemporal scales
- competition
- simulation models
- shrub encroachment
- Mosaic cycles
- Woody Species
- shrubs
- grasses
- savanna
- grasslands
- vegetation dynamics
- ecology
- modelling
- rainfall
- Library Collection RecordSummary Evaporation measurements using two Bowen ratio energy balance (BREB) systems in a remote high altitude montane grassland catchment of the Drakensberg Mountains, Cathedral Peak, South Africa…Publication Date 2009
- Bowen ratio
- Data rejection
- Grassland evaporation
- K Method
- Surface-layer scintillometer
- Temperature-variance
- grasslands
- soil moisture
- Cathedral Peak
- South Africa