Rangeland Ecology & Management
Get reliable science
Toggle Search
Result Type
Collection
Keywords
Document Type
Displaying 201 - 240 of 240 results
- 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 RecordAbstract not available.Publication Date 2001
- soil moisture
- vegetation
- ecohydrology
- stochastic processes
- hydrology
- water stress
- water balance
- savanna
- grasslands
- Crossing analysis
- Africa
- Library Collection RecordThis series of four papers studies the complex dynamics of water-controlled ecosystems from the hydro-ecological point of view [e.g., I. Rodriguez-Iturbe, Water Resour. Res. 36 (1) (2000) 3–9].…Publication Date 2001
- soil moisture
- vegetation
- ecohydrology
- stochastic processes
- hydrology
- water stress
- water balance
- savanna
- grasslands
- Crossing analysis
- 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 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 RecordAbstract not available.Publication Date 2000
- Mkomazi
- Game Reserve
- ecology
- conservation
- biodiversity
- savanna
- Africa
- Library Collection RecordPatterns of higher plant species richness and beta diversity were assessed using standard Modified-Whittaker plots in relation to landuse, slope position and mean annual rainfall across a rainfall…Publication Date 2000
- species richness
- biodiversity
- land use
- rainfall
- savanna
- communal farming
- conservation
- management
- Africa
- Library Collection RecordThe investigation was conducted on an area covered by a dense stand of Hardwickia mopane (Leguminosae: Caesalpinioideae). Seven plots (65x180 m) were subjected to different intensities of tree…Publication Date 2000
- Bush encroachment
- competition
- evapotranspiration
- infiltration
- Hardwickia mopane
- rainwater runoff
- water use efficiency.
- indigenous encroaching species
- soil moisture
- degradation
- soil erosion
- savanna
- vegetation dynamics
- Africa
- Library Collection RecordA global emission inventory of carbon monoxide (CO) emissions with 1° x 1° latitude-longitude resolution was compiled for 1990 on a sectoral basis. The sectoral sources considered include large-…Publication Date 1999
- global
- grid
- emissions
- inventory
- Carbon monoxide
- sources
- fire
- savanna
- policies
- Africa
- Library Collection RecordIn order to determine evapotranspiration losses from the groundwater of an aquifer in Botswana during the dry season, the multi-step Surface Energy Balance Algorithm for Land (SEBAL) was applied…Publication Date 1999
- transpiration losses
- deep water uptake
- semi-arid aquifer
- recharge
- Serowe
- Landsat TM
- NOAA AVHRR
- SEBAL
- remote sensing
- soil moisture
- groundwater
- savanna
- Landsat images
- NOAA
- Africa
- Library Collection RecordLand-use practices can impact on bird populations. This study set out to explain why the helmeted guineafowl, Numida meleagris (Linnaeus 1766; Aves: Numididae) declined in the Midlands of KwaZulu-…Publication Date 1999
- Helmeted guineafowl
- Land-use patterns
- Pesticides
- Maize agriculture
- KwaZulu-Natal
- Edge distance
- birds
- conservation
- biodiversity
- savanna
- land use
- Africa
- Library Collection RecordThe objective of this study was to examine the impact of provision of perennial water supply, as a management strategy to enhance game viewing, on herbaceous vegetation. Changes in herbaceous species…Publication Date 1999
- Artificial water provision
- drought
- ecotourism
- herbivore impacts
- proximal polygons
- spatial dynamics
- temporal dynamics
- wildlife management
- savanna
- management
- piosphere
- animal impact
- species richness
- biodiversity
- vegetation dynamics
- 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 RecordSurface temperature (Ts), air temperature (Ta), atmospheric precipitable water (U), and vapor pressure deficit (D) have been derived from algorithms that use satellite observations of visible, near…Publication Date 1998
- environmental factors
- remote sensing
- savanna
- agriculture
- mapping
- Africa
- Library Collection RecordThe aim of this study was to determine the water requirements for germination and early seedling establishment of four African savanna tree species, namelyAcacia karroo, A. nilotica, A.…Publication Date 1998
- Acacia karroo
- Acacia nilotica
- Acacia tortilis
- drought
- imbibition
- Mundulea sericea
- regeneration
- root penetration
- seed viability
- seeds
- germination
- savanna
- Africa
- Library Collection RecordThe components of the canopy radiation balance in photosynthetically active radiation (PAR), phytomass and leaf area index (LAI) were measured during a complete annual cycle in an annually burned…Publication Date 1997
- savanna
- NDVI values
- fire ecology
- Africa
- Library Collection RecordMontane grasslands in high rainfall areas of South Africa are subject to large-scale afforestation, making wildlife conservation evaluations necessary. A system which uses landscape features to…Publication Date 1997
- bird
- butterfly
- endemic
- grasshopper
- species richness
- biodiversity
- savanna
- conservation
- soil classification
- Africa
- Library Collection RecordDetailed reconstructions of vegetation structure are critical to understanding morphological and behavioral adaptations of Plio-Pleistocene African hominids. Savanna grassland habitats are often…Publication Date 1997
- bovid
- vegetation
- grasslands
- bipedality
- savanna
- palaeobotany
- Africa
- Library Collection RecordIn the savanna biome of southern Africa, introduced mesquite species have transformed at least 200,000 ha in the northern Cape Province of South Africa and could have a significant effect on insect…Publication Date 1996
- mesquite
- invasive plant
- Bush encroachment
- Scarabaeidae
- rare species
- savanna
- Alien invasive species
- insects
- management
- ecosystem ecology
- Africa
- Library Collection RecordThe characteristics and dynamics of dry savanna vegetation cover are receiving considerable attention from the perspectives of both global change and range degradation studies. Problems include the…Publication Date 1996
- savanna
- remote sensing
- mapping
- management
- degradation
- grazing
- Africa
- Library Collection RecordThe emergence and spatial distribution of grass seedlings were studied in a degraded savanna in south-eastern Botswana. When the rainy season started early, several separate establishment…Publication Date 1996
- Africa
- grasses
- rainfall
- Seedling
- Aristida congesta
- Chloris virgata
- Cymbopogon plurinodis
- Eragrostis rigidior
- Tragus berteronianus
- Urochloa panicoides
- degradation
- savanna
- seeds
- germination
- plant autecology
- drought
- runoff
- rehabilitation
- Africa
- Library Collection RecordOverseas Development Institute/International Institute for Environment and Development/Commonwealth Secretariat, London (1993) xi + 248 pp. ISBN 0-85003-195-8Publication Date 1995
- rangelands
- ecology
- pastoralism
- savanna
- Africa
- Library Collection RecordSavanna landscapes in the dry communal areas of southern Zimbabwe are highlyspatially heterogeneous. This year-long study explores the responses of cattle to variation in the availability of fodder…Publication Date 1995
- foraging behaviour
- cattle movement
- spatial and temporal hererogeneity
- savanna vegetation
- Zimbabwe
- savanna
- foraging ecology
- cattle
- plant production
- forage quality
- management
- grazing
- policies
- 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 RecordNo abstract availablePublication Date 1995
- ecosystem dynamics
- degradation
- savanna
- modelling
- 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 RecordAlthough ecological, economic and social conditions vary from country to country, the quandary of increasing pressure on limited tropical savanna resources is universal. This article reviews some of…Publication Date 1994
- savanna
- land use
- policies
- management
- decision support systems
- Africa
- Library Collection RecordThis study examines the variability of the normalized difference vegetation index (NDVI) over Bostwana during the period 1982-1987. Its relationship to rainfall is evaluated from 26 stations…Publication Date 1994
- NDVI values
- rainfall
- soils
- savanna
- plant production
- ecosystem ecology
- Africa
- Library Collection RecordWe investigated the plasticity of seedlings to shade in six shrub species common in subtopical thicket, in order to assess their microhabitat preferences for regeneration. Cassine peragua and…Publication Date 1993
- seeds
- germination
- plant autecology
- savanna
- ecology
- Africa
- Library Collection RecordThe role of empiricism in predicting mean annual primary production at the mesoscale is demonstrated through development of a simple model (RESAP) for application over all land surfaces within a…Publication Date 1993
- savanna
- modelling
- plant production
- mapping
- agriculture
- Africa
- Library Collection RecordThe physiognomy of dry savannas is described as a combination of discontinuous woody perennials and a continuous grassland matrix. Interactions between these two components are of vital importance…Publication Date 1992
- Herb composition
- herbaceous production
- microclimate
- nitrogen fixation
- Soil amelioration
- vegetation dynamics
- savanna
- grasslands
- landscape ecology
- soil nutrients
- rainfall
- Africa
- Library Collection RecordSavanna-grassland ecosystems are highly interactive due to effects among interconnected trophic elements. This can cause disturbance at one level in the trophic web to be propagated through that web…Publication Date 1992
- browsing
- grazing
- rinderpest
- Serengeti
- savanna
- disturbance
- disease
- animal impact
- ecosystem ecology
- Africa
- Library Collection RecordThe development of savanna-type grasslands is a relatively recent phenomena in East Africa. The stable carbon isotopic composition of paleosol carbonates from fossil localities in East Africa show…Publication Date 1992
- palaeobotany
- grasslands
- savanna
- Africa
- Library Collection RecordSeasonal effects of woody plant cover on dietary selection and nutrition of goats were evaluated in an Acacia senegal savanna in Kenya during the dry season and wet season in 1982. Treatment paddocks…Publication Date 1990
- diet selection
- goats
- savanna
- forage quality
- Forage Quantity
- foraging ecology
- management
- animal nutrition
- Africa
- Library Collection RecordEffects of extreme livestock pressure on the abundance and distribution of a drought-deciduous shrub Sericocomopsis pallida, and effects of the shrub canopy on microclimate, soil fertility and grass…Publication Date 1989
- livestock
- ecology
- grasslands
- drought
- plant autecology
- plant production
- plant community ecology
- soils
- savanna
- soil nutrients
- Africa
- Library Collection RecordThe invasions of introduced species into five reserves in tropical savannas and dry woodlands are described. Vascular plants are the group having the most introduced species; invasions are least…Publication Date 1988
- Alien invasive species
- Nature reserves
- savanna
- ecosystem ecology
- biological control
- insects
- Africa
- Library Collection RecordThe literature suggests that two different approaches have been applied to problems of rangeland monitoring using MSS data. These are referred to as the near infrared over red ratio which has been…Publication Date 1987
- remote sensing
- rangeland condition
- savanna
- modelling
- Africa
- Library Collection RecordThe growth and species structure of vegetation in relation to the proximity of termite (M. michaelseni) mounds was studied in a semi-arid savannah ecosystem during 1978-1980. The dry matter yield in…Publication Date 1982
- savanna
- ecosystem ecology
- biodiversity
- soils
- Africa
- Library Collection RecordSummary In a general ecological study of the Simanjiro Plains, northern Tanzania carried out from 1970 to 1972, the vegetation was studied as part of the habitat of large herbivores using this area.…Publication Date 1979
- ecology
- grasslands
- savanna
- sheep
- grazing
- animal impact
- Africa
- Library Collection RecordSummary Small dome-shaped hills are recurrent and common landforms associated with plateau surfaces in the savanna woodland landscapes, both to the north and south of the Congo Basin. They may be…Publication Date 1979
- insects
- savanna
- climate change
- ecology
- rainfall
- fire
- Africa
Pagination
- First page
- Previous page
- 1
- 2
- 3
- 4
- 5