Rangeland Ecology & Management
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Displaying 101 - 150 of 369 results
- 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. 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. Through their effects on plant communities, herbivores can exert strong direct and indirect effects on savanna ecosystems and have the potential to create and maintain savanna landscape…Publication Date 2010
- grazing
- savanna
- herbivores
- ecosystem ecology
- vegetation dynamics
- cattle
- game
- cattle - wildlife interactions
- ecological legacies
- facilitation
- foraging behaviour
- landscape heterogeneity
- pastoralism
- plant - herbivore interactions
- rangeland
- succession
- Africa
- Library Collection RecordAbstract Aim Wildlife and pastoral peoples have lived side-by-side in the Mara ecosystem of south-western Kenya for at least 2000 years. Recent changes in human population and landuse are…Publication Date 2004
- Kenya
- Maasai Mara
- pastoralism
- rangelands
- bomas
- livestock
- wildlife
- land use
- conservation
- national parks
- tourism
- Economic Aspects
- Africa
- Library Collection Record1. Up to 73% of the world s rangelands are degraded, and increasing demand for meat in developing countries and a growing human population are likely to exert even greater pressures on rangelands in…Publication Date 2010
- restoration ecology
- stocking rates
- grazing
- rangelands
- rainfall
- management
- ecosystem ecology
- vegetation dynamics
- South Africa
- Library Collection RecordAbstract The main factors affecting the abundance and composition of the invertebrate fauna in grassland are reviewed. Old grasslands with species-rich swards and complex structure support an…Publication Date 1987
- grasslands
- biodiversity
- soils
- ecosystem ecology
- management
- Pesticides
- 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 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 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 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 RecordAbstract Grazing is one of the key processes in terrestrial ecosystems and this can be provided by both indigenous and domestic ungulates. However, a question remains whether or not traditional forms…Publication Date 2010
- biodiversity
- dung beetles
- grazing
- land use
- indicator species
- livestock
- insects
- management
- conservation
- Vaalbos National Park
- South Africa
- Library Collection RecordSummary This paper presents a description of the temporal and spatial distribution of rainfall within the Serengeti Ecosystem, Tanzania. Ecosystem and Regional patterns are discussed with respect to…Publication Date 1975
- rainfall
- ecosystem dynamics
- ecosystem ecology
- vegetation dynamics
- Africa
- Library Collection RecordSavannah ecosystems are important carbon stocks on the Earth, and their quantification is crucial for understanding the global impact of climate and land-use changes in savannahs. The estimation of…Publication Date 2014
- allometry
- biomass estimations
- Kalahari
- savannah
- ecosystem ecology
- climate change
- South Africa
- 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 RecordEuclea divinorum, a fast establishing, unpalatable, and fire resistant bush is considered an invasive species in some parts of its range. In Ol Pejeta Conservancy (OPC), Kenya, E. divinorum bushes…Publication Date 2013
- Acacia drepanolobium
- encroachment
- Euclea divinorum
- grassland
- invasion
- seedlings
- indigenous encroaching species
- grasslands
- rainfall
- ecosystem ecology
- Kenya
- 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 RecordThere has been much debate on the impact of large herbivores on biodiversity, especially given that large mammals are becoming locally extinct in many places. The use of evolutionary information on…Publication Date 2013
- herbivores
- species diversity
- community structure
- savanna
- ecosystem ecology
- determinants of plant community diversity and structure
- extinction
- functional diversity
- phylogenetics
- Kruger National Park
- South Africa
- Library Collection RecordThe KwaZulu-Natal region of South Africa hosts a large diversity of asclepiads (Apocynaceae: Asclepiadoideae), many of which are endemic to the area. The asclepiads are of particular interest because…Publication Date 2003
- animals
- ecosystem
- Flowers/physiology/ultrastructure
- Gentianaceae/*physiology
- Hymenoptera/*physiology/ultrastructure
- microscopy
- Electron
- Scanning
- Poaceae/*physiology
- Pollen/*physiology/ultrastructure
- South Africa
- grasslands
- endemic species
- ecosystem ecology
- insects
- Africa
- Library Collection RecordBackground: Numerous Cape Floristic Region (CFR) clades are found in the Afromontane region of Africa, causing speculation on the source of their distribution. The southern Escarpment has been…Publication Date 2011
- data analysis
- montane grasslands
- ecosystem ecology
- palaeobotany
- climate change
- rainfall
- South Africa
- Library Collection RecordDead shrubs lying on the soil surface in an arid shrubland in the southern Karoo have half-lives of 9 to 18 years depending on wood density which varies among species. Dung pellets of sheep and…Publication Date 1996
- ecosystem ecology
- rangeland condition
- rangelands
- land use
- climate
- vegetation dynamics
- Africa
- Library Collection RecordThe dynamics of savannah vegetation are still poorly understood. This study aims at analysing land cover changes over the past 20 years in the rangelands area of Narok District, Kenya. To analyse the…Publication Date 2001
- vegetation dynamics
- ecosystem ecology
- land-use
- remote sensing
- climate
- Africa
- Library Collection RecordThe role of mounds of the fungus-growing termite Macrotermes bellicosus (Smeathman) in nutrient recycling in a highly weathered and nutrient-depleted tropical red earth (Ultisol) of the Nigerian…Publication Date 2011
- invertebrates
- soils
- savanna
- soil nutrients
- ecosystem ecology
- Nigeria
- 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 not available.Publication Date 2002
- vegetation dynamics
- ecosystem ecology
- rangelands
- grazing
- 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 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 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 RecordIn many South African catchments, water is an increasingly limited and highly fluctuating resource. Accurate prediction of low flows is especially vital if water resource managers are to successfully…Publication Date 2003
- streamflow
- IHACRES
- land-use
- Rainfall-runoff model
- South Africa
- hydrology
- modelling
- rainfall
- decision support systems
- ecosystem ecology
- Africa
- Library Collection RecordThe paper analyses land use trajectories in savannah woodlands in the Central-West Region, Burkina Faso and the Upper East Region in northern Ghana by use of satellite images and historical archives…Publication Date 2003
- deforestation
- remote sensing
- Colonial history
- Land cover changes
- Ghana
- Burkina Faso
- socio-economic aspects
- land-use
- legislation
- ecosystem ecology
- Africa
- Library Collection RecordThe community structure and abundance of plant-feeding nematodes were studied in four grasslands, which had not been fertilised for 6, 10, 23, and 28 years, respectively. We hypothesised that…Publication Date 2001
- body size
- Feeding strategy
- Food quality
- nematodes
- soil fertility
- succession
- grasslands
- fertilizer
- invertebrates
- ecosystem ecology
- soil nutrients
- Africa
- Library Collection RecordThe overall effects of fire on ecosystems are complex, ranging from the reduction or elimination of aboveground biomass to impacts on belowground physical, chemical and microbial mediated processes.…Publication Date 1999
- fire
- soils
- physical properties
- Microbial ecology
- nutrients
- organic matter
- fire ecology
- sustainability
- Soil Condition
- vegetation dynamics
- ecosystem ecology
- Africa
- Library Collection RecordWe use a dynamic stochastic simulation model of forage, herbivores, predators and domestic livestock in the Machakos District of Kenya to address policies related to the multiple use of rangeland…Publication Date 1997
- policies
- grazing
- livestock
- land use
- rangelands
- Traditional management
- commercial agriculture
- conservation
- pastoralism
- Forage Quantity
- drought
- Africa
- Library Collection RecordQuestions as to whether public investment in international agricultural research is a [`]Good Thing' or not may best be addressed using two arguments: (1) justifications based on whether or not…Publication Date 2003
- livestock
- System
- classification
- mapping
- animal production
- economics
- agriculture
- subsistence agriculture
- Africa
- Library Collection RecordThis paper explores the long-standing interest in the introduction of fodder legumes as an essential component of mixed farming systems in Africa. The central argument is that because of certain…Publication Date 2002
- fodder legumes
- research
- uptake
- Africa
- mucuna
- mixed farming
- Crop-livestock interactions
- fodder quality
- agriculture
- livestock
- socio-economic aspects
- Africa
- Library Collection RecordWe tested the potential of artificial neural networks (ANNs) as predictive tools in ecology. We compared the performance of ANNs and regression models (RM) in predicting ecosystems attributes, with…Publication Date 1997
- aboveground net primary production
- Artificial neural networks
- grasslands
- normalized difference vegetation index
- prediction
- Regression models
- remote sensing
- ecosystem ecology
- NDVI values
- Africa
- Library Collection RecordThe metaphysiological modelling approach relates aggregated population dynamics to biomass gained from resources consumed, relative to physiological attrition and mortality losses. A GMM (Growth,…Publication Date 2002
- Consumer-resource dynamics
- Herbivore-vegetation systems
- Metaphysiological modelling
- seasonality
- animal production
- diet selection
- modelling
- ecosystem ecology
- Africa
- Library Collection RecordIt is claimed that high returns can be achieved from hunting and ecotourism operations. As a result wildlife production is a rapidly growing form of land-use in South Africa. Lately, rural African…Publication Date 2002
- Economies of scale
- Wildlife production
- livestock production
- Savannah land-use
- land use
- game farming
- commercial agriculture
- livestock
- Economic Aspects
- eco - tourism
- subsistence agriculture
- Africa
- Library Collection RecordFocusing on the issue of veldt degradation and grazing pressure on rangelands, a simplified model was constructed for a sustainable stocking rate (SR) evaluation of the complex system of semi-arid…Publication Date 1999
- stocking rates
- mixed grazing
- modelling
- Arid and sub-humid regions
- grazing
- degradation
- management
- decision support systems
- biodiversity
- traditional knowledge
- ecosystem ecology
- conservation
- foraging ecology
- Africa
- Library Collection RecordThis paper examines the interest in the development and promotion of mixed farming in sub-Saharan Africa. For over 70 years mixed farming has been a dominant model for agricultural development…Publication Date 1998
- mixed farming
- Sub-Saharan Africa
- crop-livestock interaction
- nutrient cycling
- integrated farming
- agriculture
- socio-economic aspects
- Sustainable development
- livestock
- subsistence agriculture
- Africa
- Library Collection RecordChanges in litter production following back and head fires, some soil characteristics and root and litter turnover were quantified over two growing seasons for a semi-arid grassland. Sampling of…Publication Date 2005
- fire ecology
- grasslands
- Soil Condition
- soil moisture
- ecosystem ecology
- Africa
- Library Collection RecordThe role of herbivores in controlling plant species richness is a critical issue in the conservation and management of grassland biodiversity. Numerous field experiments in grassland plant…Publication Date 1998
- herbivores
- grassland
- diversity
- species richness
- environmental gradients
- grasslands
- biodiversity
- conservation
- management
- livestock
- soil fertility
- rainfall
- ecosystem ecology
- Africa
- Library Collection RecordIt has long been recognized that alternative vegetation states may occur in terrestrial grazing systems. This phenomenon may be of great importance as small environmental fluctuations may lead to…Publication Date 1997
- vegetation dynamics
- grazing
- grasslands
- ecosystem ecology
- degradation
- Africa
- Library Collection RecordA vegetation survey of road verges along an urban to rural gradient in the Potchefstroom Municipal Area was conducted. Important applications of these studies include understanding of the role of…Publication Date 2000
- Braun-Blanquet approach
- Dispersal corridors
- roadside vegetation
- vegetation analysis
- ecosystem ecology
- management
- biodiversity
- Africa
- Library Collection RecordPolycultural agroecosystems, such as rangelands, are too complex and poorly understood to permit precise numerical simulation. Management decisions that depend on behavioral predictions of such…Publication Date 1996
- Case-based reasoning (CARMA)
- Model-based reasoning
- prediction
- ecosystem
- Reasoning paradigms
- pest management
- rangelands
- ecosystem ecology
- modelling
- ecosystem dynamics
- management
- decision support systems
- Africa
- Library Collection RecordThe species composition of grazing lands can be influenced by livestock and grazing pressure. A study on manure seed bank was conducted in Ghinchi highland Research Site in Ethiopia between 1995 and…Publication Date 2000
- manure
- species
- Life-form
- livestock
- seed banks
- biodiversity
- grazing
- species richness
- grasslands
- germination
- soil fertility
- management
- Africa
- Library Collection RecordEnvironmental weeds are an escalating problem worldwide. Integrated control is unable to keep up with the demands for management strategies for existing and new, potentially invasive plant species.…Publication Date 1998
- Environmental weeds
- management
- Priority areas
- surveys
- integrated control
- rehabilitation
- Weeds
- Alien invasive species
- ecosystem ecology
- conservation
- Africa
- Library Collection RecordTo test the effects of shade on understorey herbaceous productivity in tropical savannas, water relations of important grass species that either grow primarily under tree crowns or in open grasslands…Publication Date 1995
- Cynodon n1emfuensis
- Digitaria macroblephara
- Eustachyspaspaloides
- irradiance
- Panicum maximum
- rainfall-use efficiency
- stomatal conductance
- Tropical grasses
- water potential
- vegetation dynamics
- ecosystem ecology
- Africa
- Library Collection RecordAspects of the relationships between the plants and the flower-visiting insects of the north-western Cape, South Africa, based upon a 3-year study on permanent plots, are examined. The vast majority…Publication Date 1994
- anthophilous insects
- Apoidea
- Asteraceae
- Bombyliidae
- flower visitation behaviour
- Mesembryanthemaceae
- masarine wasps
- melittophily
- Namaqualand broken veld
- pollen loads
- ecosystem ecology
- insects
- Africa