Rangeland Ecology & Management
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- Library Collection RecordThis paper examines if post-fire deferment and periodic rests provided by rotational grazing allowed for more rapid recovery of soil cover, soil chemical and physical parameters, and vegetation…Publication Date 2010
- grazing management
- infiltration
- prescribed burning
- soil health
- summer fire
- rangeland restoration
- Soil Condition
- management
- grazing
- fire ecology
- plant production
- plant community ecology
- rangeland condition
- rangelands
- Texas
- USA
- Library Collection RecordDistance to grazing hotspots like watering points or farms is regularly used as proxy for grazing intensity in extended rangelands. In many studies the resulting patterns between distance and grazing…Publication Date 2010
- Ecological threshold
- Grazing hotspot
- piosphere
- rangelands
- state and transition model
- trampling
- grazing
- livestock
- management
- Library Collection RecordGrassland vegetation can provide visual cover for terrestrial vertebrates. The most commonly used method to assess visual cover is the Robel pole. We test the use of digital photography as a more…Publication Date 2010
- bunchgrass
- Digital image analysis
- grazing
- litter
- range management
- Robel pole
- wildlife management
- remote sensing
- British Columbia
- Canada
- Library Collection Record1. aged and natural ecosystems, herbivory can have a major impact on plant growth. Defoliation and shoot removal reduce the photosynthetic capacity of plants and are also thought to reduce allocation…Publication Date 2010
- fertiliser
- ecosystem ecology
- invertebrates
- arbuscular myccorrhyiza
- clipping
- defoliation
- ectomycorrhiza
- grazing
- insect herbivory
- land use
- meta-analysis
- mowing
- grasses
- 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 RecordGrazing can modify vegetation structure and species composition through selective consumption, modifying plant litter quality and hence decomposability. In most grasslands, moderate stocking rates…Publication Date 2010
- Ground
- below-ground
- Decomposition
- grazing
- nutrient cycling
- vegetation patch
- grassland
- ecosystem ecology
- soils
- Córdoba Mountains
- Argentina
- Library Collection RecordDesertification, the conversion of arid grasslands to shrublands due to overgrazing and drought, is occurring on over a quarter of the land on earth. Conceptual models of desertification predict…Publication Date 2010
- Desert Grassland
- grazing
- islands of fertility
- soil nutrients
- Water Infiltration
- desertification
- drought
- modelling
- Arizona
- USA
- Library Collection RecordRangeland systems cover vast areas of the earth s surface containing great diversity of life, and contribute to the livelihoods and welfare of millions of people. The management of rangeland systems…Publication Date 2010
- behavioral syndromes
- grazing distribution
- Individual foraging behavior
- large herbivores
- phenotypic plasticity
- grazing management
- grazing
- management
- rangelands
- foraging ecology
- Library Collection RecordLand use and land transformation are major threats to biodiversity. Only a small percentage of land and thus biodiversity is protected within reserves. The majority of biodiversity lies in the hands…Publication Date 2010
- biodiversity
- South Africa
- Eastern Cape
- Agrobiodiversity
- Agricultural ecology
- veld
- landscape assessment
- rangeland condition
- rangelands
- plant production
- grassland
- savanna
- socio-economic aspects
- communal farming
- grazing
- fire ecology
- soil erosion
- commercial agriculture
- southern 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 RecordPrimary energy extraction patterns by livestock under agropastoralism and ranching were investigated by the bite count method in semiarid south-eastern Kenya. Sward biomass for optimal energy intake…Publication Date 2009
- agropastoralism
- energy intake
- ranching
- livestock
- cattle
- sheep
- goats
- pastoralism
- diet selection
- grazing
- management
- animal production
- Kenya
- Africa
- Library Collection RecordThe nutritive value of four subtropical grasses (Panicum maximum, Anthephora pubescens, Digitaria eriantha and Chloris gayana) standing hay were compared in terms of qualitative intake and partial…Publication Date 2009
- Anthephora pubescens
- Chloris gayana
- Digitaria eriantha
- nutritive value
- Panicum maximum
- diet selection
- sheep
- forage quality
- animal nutrition
- grazing
- South Africa
- Library Collection RecordThe mediterranean ecosystems of the world harbor exceptional biodiversity, and factors such as livestock grazing which may negatively affect biodiversity are of global concern. The mediterranean…Publication Date 2009
- rangelands
- rangeland condition
- vegetation dynamics
- grazing
- biodiversity
- livestock
- commercial agriculture
- communal farming
- Karoo
- 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 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 RecordThe direct short-term impact of three rates of stocking (4, 8 and 16 small-stock units [SSU] ha-1) was quantified in terms of soil characteristics of arid Nama Karoo vegetation (subshrub/grass).…Publication Date 2009
- bulk density
- Infiltration Rate
- Karoo bushes
- soil compaction
- stocking rate
- sheep
- agriculture
- grazing
- soils
- stocking rates
- hydrology
- South Africa
- Library Collection RecordThe need to implement sustainable resource management regimes for semi-arid and arid rangelands is acute as non-adapted grazing strategies lead to irreversible environmental problems such as…Publication Date 2009
- adaptation
- climate change
- Arid rangelands
- Namibia
- Bio-economic simulation approach
- land use
- sustainability
- management
- socio-economic aspects
- grazing
- modelling
- ecology
- savanna
- stocking rates
- decision support systems
- vegetation dynamics
- Namibia
- Africa
- Library Collection RecordPatchy vegetation patterns are an expression of soil surface conditions, water redistribution on the soil surface and landscape function. Their origin is attributed by many a scholar to the…Publication Date 2009
- patchiness
- Moisture dependencies
- Soil crusting
- Runoff generation
- Dysfunctional
- Soil Condition
- rainfall
- runoff
- Aerial Photographs
- Alien invasive species
- disturbance
- erosion
- land use
- grazing
- landscape ecology
- degradation
- Eastern Cape
- South Africa
- 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 RecordIn African savannahs, large trees improve grass quality, particularly in dry and nutrient poor areas. Enhanced below-canopy grass nutrients, such as nitrogen and phosphorus contents should therefore…Publication Date 2009
- canopy
- feeding preferences
- Fibre
- Grass quality
- Grazer
- herbivores
- linear programming
- nitrogen
- nutrients
- phosphorus
- savanna
- forage quality
- grazing
- animal nutrition
- modelling
- 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 RecordA simulation model was used to determine the ecological and economic consequences of managing stocking rate on semi-arid savanna rangeland continuously stocked with livestock to achieve the alternate…Publication Date 2009
- continuous grazing
- ranching systems
- range condition
- semi-arid
- stocking rates
- sustainability
- Economic Aspects
- grazing
- savanna
- rangeland condition
- management
- rainfall
- indigenous encroaching species
- animal production
- modelling
- plant production
- Library Collection RecordAbstract The ecogeomorphic processes occurring on semiarid rangelands are reviewed, with emphasis on the source-sink relations and positive feedback loops that existed between shrub patches and…Publication Date 2009
- intershrub areas
- shrubs
- soil resources
- trampling routes
- rangelands
- livestock
- Soil Condition
- grazing
- ecosystem dynamics
- Israel
- Library Collection RecordThe objective of this study was to clarify whether the changes in percent cover of plant functional types (i.e., life forms and growth forms) along a grazing gradient reflect the livestock number,…Publication Date 2009
- grazing intensity
- plant functional type
- rangeland ecology
- semi-arid
- grazing
- livestock
- management
- sheep
- grasslands
- plant anatomy
- plant autecology
- vegetation dynamics
- Mongolia
- China
- Library Collection RecordAlso issued on CD-ROM. Summary available in English and AfrikaansPublication Date 2009
- agriculture
- plant production
- grazing
- management
- southern Africa
- Library Collection RecordCommonage is land that is usually found adjacent to a town, which is owned by the local municipality and acquired through state grants or, historically, through the church. Since the new government…Publication Date 2009
- commonage
- land reform
- common property resource
- adaptive co-management
- Subsistence farming
- management
- land use
- grazing
- Sustainable utilisation
- southern Africa
- Library Collection RecordTo redress past discrepancies in land tenure, the ANC government acknowledged that land needs to be made accessible to the previously disadvantaged, announcing that commonage would be a pillar of…Publication Date 2009
- Municipal commonage
- Livelihoods
- natural resource valuation
- direct-use values
- policies
- politics
- socio-economic aspects
- land tenure
- land use
- communal farming
- legislation
- management
- grazing
- southern Africa
- Library Collection Record
128 Savanna
Savannas are characterized by the coexistence of trees and grasses and occur largely in the seasonal tropics between the equatorial rainforests and mid-latitude desert ecosystems. This article…Publication Date 2008- climate change
- Deciduous
- Evergreen
- fire
- grazing
- herbivory
- phenology
- Seasonal tropics
- soils
- Tree and grass competition
- savanna
- ecology
- animal impact
- grasslands
- rainfall
- southern Africa
- Library Collection Record
129 Grassland Models
An overview of ecological models of grasslands and their research questions is presented. For the purpose of this article, models are regarded as a simplified and formalized representation of…Publication Date 2008- competition
- disturbance
- Ecosystem modeling
- Grassland dynamics
- grazing
- Optimal life-history strategies
- primary production
- Remote sensing data
- Spatially explicit models
- succession
- modelling
- ecosystem ecology
- community
- vegetation dynamics
- plant production
- southern Africa
- Library Collection RecordSummary * 1Grasses using the C4 photosynthetic pathway dominate today's savanna ecosystems and account for ~20% of terrestrial carbon fixation. However, this dominant status was reached only…Publication Date 2008
- atmospheric CO2
- C4 plants
- climate change
- fire
- grasslands
- grazing
- Poaceae
- rainfall
- savanna
- seasonality
- carbon dioxide
- palaeoclimate
- palaeobotany
- Africa
- Library Collection RecordIn Kenya, lands surrounding wildlife protected areas (PAs), referred to as dispersal areas, have undergone widespread land use changes, but these have been little studied. This study investigated…Publication Date 2008
- conservation
- agriculture
- national parks
- land use
- grazing
- biodiversity
- disturbance
- rainfall
- Africa
- Library Collection RecordThis paper reports an assessment of the current and potential impacts of invasive alien plants on selected ecosystem services in South Africa. We used data on the current and potential future…Publication Date 2008
- biodiversity
- Fynbos
- grassland
- grazing
- groundwater
- hydrology
- Karoo
- savanna
- water yield
- Alien invasive species
- ecosystem services
- Africa
- Library Collection RecordWe tested the scaling effects of proximate desertification drivers (i.e. soil erosion, bush encroachment and grazing pressure) on soil nutrients in northeastern Tanzania. We analyzed nutrient…Publication Date 2008
- Desertified landscapes
- Dysfunctional landscapes
- Proximate desertification drivers
- soil nutrients
- Tanzaniadesertification
- erosion
- grazing
- indigenous encroaching species
- desertification
- landscape ecology
- Africa
- Library Collection RecordThe ability to produce vegetative shoots is a form of persistence in arid and semiarid savannas allowing trees to survive herbivory, fire and cutting. In terms of growth rates and survival, this form…Publication Date 2008
- browsing
- coppice
- Exclosure
- grazing
- Resprouting
- restoration
- Savanna woodland
- Africa
- Library Collection RecordChanges in species richness and vegetation composition in the diverse semi-arid Succulent Karoo vegetation of South Africa were investigated after 67 (1937-2004) years of rest from livestock grazing…Publication Date 2008
- diversity
- Growth Form
- ordination
- species richness
- succession
- Termitaria
- grazing
- vegetation dynamics
- ecology
- insects
- degradation
- restoration ecology
- Africa
- Library Collection RecordThis paper provides values for nitrogen isotopic abundances of southern African soils and plants along land use gradients of varying aridity. The ?15N values of soils and plants were generally higher…Publication Date 2008
- grasses
- grazing
- mineralization
- nitrification
- savanna
- trees
- soils
- grazing
- Africa
- Library Collection RecordDebate among scientists about ecological dynamics and appropriate management of semi-arid rangelands has led to a challenge of received wisdoms of range management and pastoral development in dryland…Publication Date 2008
- Semi-arid rangeland
- pastoralism
- Water Point
- grazing gradient
- ordination
- species response curve
- Namibia
- rangeland condition
- rangelands
- piosphere
- grazing
- biodiversity
- management
- Africa
- Library Collection RecordThe morphometrics of mandible and teeth of mixed-breed goats on rangeland were analyzed to investigate the association between the oral apparatus and diet type. Canonical relationship between sets of…Publication Date 2007
- diet
- grazing
- Mandible
- Jaw
- Incisor
- Molar teeth
- goats
- rangelands
- diet selection
- forage quality
- foraging ecology
- Africa
- Library Collection RecordThe tree-grass interactions of African savannas are mainly determined by varying rainfall patterns and soil fertility. Large savanna trees are known to modify soil nutrient conditions, but whether…Publication Date 2007
- canopy
- Fibre content
- Grass structure
- grazing
- nitrogen
- phosphorus
- savanna
- rainfall
- soil fertility
- plant production
- nutrition
- soil organic carbon
- biomass
- forage quality
- Africa
- Library Collection RecordNo abstract availablePublication Date 2007
- agriculture
- soils
- Soil Condition
- grazing
- rangeland condition
- ecosystem dynamics
- Africa
- Library Collection RecordModels predict that desertification, the loss of perennial grasses in arid and semiarid environments, will be difficult to reverse due to the positive feedback between plant cover and water…Publication Date 2007
- arid grassland
- grazing
- hoof action
- perennial grass
- resilience
- restoration
- woody encroachment
- soils
- desertirfication
- models
- Africa
- Library Collection RecordThe impact of long-term high grazing pressure on geomorphological features, plant community composition and cover and soil characteristics of an ephemeral river system in Namaqualand, South Africa,…Publication Date 2007
- Animal-plant interactions
- Landscape patches
- livestock impacts
- Namaqualand
- Resource control
- riparian vegetation
- grazing
- soils
- degradation
- Plant Productivity
- Africa
- Library Collection RecordIn Namaqualand, heavy grazing of low-lying areas has resulted in the reduction of palatable perennial shrubs and the dominance of the unpalatable shrub, Galenia africana. This study investigates the…Publication Date 2007
- Succulent karoo
- Namaqualand
- Vegetation Change
- rehabilitation
- microhabitats
- grazing
- seeds
- restoration ecology
- vegetation dynamics
- Africa
- Library Collection RecordA national-level land degradation risk monitoring system identified an important grazing area in central northern Namibia as an area at risk of environmental change. A time series analysis of primary…Publication Date 2007
- semi-arid
- local knowledge
- rainfall variability
- water supply
- grazing
- land management
- degradation
- data analysis
- grasslands
- livestock
- rainfall
- participatory rural appraisal
- decision support systems
- management
- traditional knowledge
- Africa
- Library Collection RecordWe use the concept of ecological revolutions to explain the environmental history of Namaqualand, from the advent of pastoralism 2000 years BP, to colonial settlement in the 18th century and finally…Publication Date 2007
- degradation
- Environmental history
- human impact
- population
- repeat photography
- socio-economic aspects
- agriculture
- grazing
- management
- land use
- Africa
- Library Collection RecordAs part of an investigation of land degradation in the South African Karoo, three types of fine sediment signatures (radionuclides, mineral magnetism and sediment geochemistry) were used to trace the…Publication Date 2007
- Sediment fingerprinting
- South African Karoo
- Erosion history
- Extreme events
- 137Cs and 210Pb
- land use
- soils
- management
- grazing
- fire
- livestock
- Africa
- Library Collection RecordLocalised patterns of erosion and deposition in vegetated semi-arid rangelands have been shown to influence ecological change and biogeochemical cycles. In the flat, vegetated Kalahari rangelands of…Publication Date 2007
- cyanobacterial soil crusts
- Erodibility
- surface roughness
- Cohesivity
- Kalahari
- erosion
- rangeland condition
- ecosystem dynamics
- soil crusts
- grazing
- Africa
- Library Collection RecordThe worldwide loss of utilisable rangeland in (semi-) arid areas results in huge economic and social costs. Only adaptive management strategies are able to cope with these systems, which are mainly…Publication Date 2007
- Non-equilibrium system
- grazing
- Opportunistic management
- Resting
- semi-arid
- simulation model
- rangeland condition
- rangelands
- modelling
- Economic Aspects
- management
- rainfall
- Africa
- Library Collection RecordDeserts are known to mankind, but the term desertification has always been an elusive concept. It is now defined in the United Nations Convention to Combat Desertification (UNCCD) as land degradation…Publication Date 2007
- land degradation
- Land use and land cover changes
- overgrazing
- Biomass burning and atmospheric emissions
- Air Pollution
- Forest and woodland clearing
- wind erosion
- climate change
- degradation
- erosion
- land use
- grazing
- management
- Carbon Sink
- Africa
- Library Collection RecordIn the biodiversity rich regions of western South Africa transhumance grazing strategies were practised for thousands of years. Today only vestiges of these systems remain with private ownership…Publication Date 2007
- Ecosystem goods and services
- livestock management
- productivity
- phenology
- landscape heterogeneity
- livestock
- management
- ecosystem dynamics
- Economic Aspects
- ecosystem services
- grazing
- household income studies
- Africa