Rangeland Ecology & Management
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Displaying 301 - 324 of 324 results
- Library Collection RecordUsing an analysis of aerial photographs from 1942, 1985 and 2004 we assessed the impact of changing land tenure and land-use regimes on the cover of thicket vegetation on the Grahamstown commonage.…Publication Date 2014
- bush encroahcment
- land use
- management
- Aerial Photographs
- goats
- browsing
- livestock
- grazing
- grasses
- shrubs
- degradation
- Grahamstown
- South Africa
- Library Collection RecordFew assessments of the effects of fire and grazing on the herbaceous components of savannas have been reported for Africa. In the Kruger National Park, South Africa, range condition was monitored at…Publication Date 2014
- fire ecology
- grazing
- management
- savanna
- game
- rangeland condition
- rainfall gradient
- grasses
- forage
- ecosystem ecology
- Kruger National Park
- South Africa
- Library Collection RecordA quantitative description of woody plant communities that aimed at aiding studies on grass–tree competition interactions, bush encroachment and estimation of food to browser herbivore species, was…Publication Date 2014
- Bush encroachment
- competition
- grasses
- browse
- fodder production
- plant production
- Africa
- Library Collection RecordWe carried out a trial in the Hluhluwe-iMfolozi Park comparing three herbicides and two manual control techniques for controlling the annual weed Parthenium hysterophorus L. The herbicides 2,4-D…Publication Date 2010
- control
- forbs
- grasses
- Herbicide
- impact
- manual weeding
- Alien invasive species
- Weeds
- management
- restoration ecology
- South America
- Library Collection RecordTrait-based community assembly theory suggests that trait variation among co-occurring species is shaped by two main processes: abiotic filtering, important in stressful environments and promoting…Publication Date 2012
- abiotic filtering
- bottom-up control
- community assembly
- competition
- functional diversity
- grasses
- grasshoppers
- herbivores
- savannas
- top-down control
- trait dispersion
- trophic interactions
- South Africa
- Library Collection RecordA three-year study was done to determine herbaceous biomass production and its utilization by herbivores in an arid zone inhabited by a largely nomadic population in northern Kenya. The indicator…Publication Date 1998
- grasses
- forbs
- Dwarf Shrubs
- Offtake
- herbivores
- desertification
- nomads
- plant production
- rangelands
- pastoralism
- grazing
- degradation
- decision support systems
- management
- foraging ecology
- Africa
- Library Collection RecordStomatal size and density were measured from graminoid cuticular fragments extracted from dated sediments in two tropical-montane crater lakes on Mount Kenya. The sediments had been dated in other…Publication Date 2002
- stomata
- CO2
- glacial-interglacial transition
- grasses
- Mount Kenya
- East Africa
- Late Quaternary
- palaeobotany
- Africa
- Library Collection RecordThe forest and savanna are already denuded of trees, hence this study focused on grasses, weeds and leaves as a possible source of sustainable, highly renewable replacement for wood as an energy…Publication Date 2009
- forest
- trees
- grasses
- Renewable
- wood
- availability
- sustainability
- grasslands
- Economic Aspects
- Nigeria
- Africa
- Library Collection RecordThe effects of elevated atmospheric CO2 concentrations on plant polyphenolic, tannin, nitrogen, phosphorus and total nonstructural carbohydrate concentrations were investigated in leaves of…Publication Date 2005
- elevated CO2
- source-sink balance
- polyphenolics
- tannins
- grasses
- shrubs
- carbon dioxide
- plant autecology
- grasslands
- Phytochemistry
- Africa
- Library Collection RecordA distinguishing, co-dominance feature of trees and grasses in Savannas was prominently explained by Walter. He hypothesized that water is the limiting factor and grasses are superior competitors for…Publication Date 2003
- trees
- grasses
- roots
- savanna
- isotopic
- carbon
- hydrology
- plant autecology
- ecology
- 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 RecordThe link between species' functional traits and competitive abilities has been described as a major factor structuring plant communities. However, two diverging hypotheses have been proposed to…Publication Date 2014
- functional trait
- community ecology
- grasses
- competition
- ecosystem ecology
- soil moisture
- soil nutrients
- root ecology
- plant competition
- root length density
- root phosphorus use efficiency
- specific root length
- trait hierarchy
- trait similarity
- France
- Library Collection Record1. Plant-plant interactions are known to vary with changing environmental conditions; however, we have little empirical knowledge of the impact of abrupt environmental changes on millennial scale…Publication Date 2011
- climate change
- palaeoecology
- management
- grasses
- modelling
- community dynamics
- ecosystem changes
- abrupt climate change
- alternative stable states
- community dynamics
- competition
- facilitation
- fire
- herbivore density
- nitrogen availability
- plant population
- Tree-grass coexistence
- England
- Library Collection RecordThe invasion of exotic grasses into savannas is occurring globally. Despite threats to ecosystem processes and biodiversity, few studies have investigated factors that facilitate invasion success. *…Publication Date 2013
- cattle grazing
- exotic grass
- facilitation
- grass-fire cycle
- savanna
- wind dispersal
- grazing
- Alien invasive species
- ecosystem ecology
- restoration ecology
- Cenchrus ciliaris
- grasses
- fire ecology
- grazing
- soils
- rainfall
- drought
- Queensland
- Australia
- Library Collection RecordThis study evaluated the effects of soil moisture deficit and subsequent watering on the growth of Bromus inermis Leyss., Dactylis glomerata L., Lolium perenne L. and Phleum pratense L. under a non-…Publication Date 2011
- soil moisture
- drought
- pastures
- grasses
- plant physiology
- Bromus inermis
- Dactylis glomerata
- Drought Stress
- Lolium perenne
- Phleum pratense
- Tottori
- JapanÂ
- Library Collection RecordAbstract Apomixis has been suggested to result from the asynchronous gene expression of duplicated genes governing plant reproduction. The similarity of embryological stages and gene expression…Publication Date 2014
- Asynchrony
- Confocal
- Heterochronous
- apomixis
- plant breeding
- Pseudogamy
- grasses
- Cenchrus ciliaris
- Library Collection RecordSmooth bromegrass (Bromus inermis Leyss.), meadow bromegrass (Bromus riparius Rehm.) and hybrid bromegrass (B. riparius x B. inermis) are widely used for hay and pasture in temperate regions of the…Publication Date 2011
- pastures
- plant production
- management
- plant physiology
- grasses
- Bromegrass
- defoliation
- etiolated regrowth
- remobilization of stored reserves
- Saskatoon
- Canada
- Library Collection RecordForages are important throughout the south-east USA for livestock production and wildlife habitat. However, little is known about how forage species commonly grown in this region influence soil-…Publication Date 2011
- soils
- foragage quality
- ecosystem ecology
- fungi
- water-stable aggregates
- hyphal density
- grasses
- legumes
- south-east USA
- 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 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 Record1. We discuss a simple implicit-space model for the competition of trees and grasses in an idealized savanna environment. The model represents patch occupancy dynamics within the habitat and…Publication Date 2010
- modelling
- grasses
- ecosystem ecology
- vegetation dynamics
- demographic structure
- fire
- multiple stable states
- savanna
- stable and unstable species coexistence
- stochastic disturbance
- tree seedlings
- Library Collection RecordDelayed seed germination is considered to be a bet-hedging strategy, but experimental evidence of its adaptive role as an inherited trait is still lacking. In each of two co-occuring annual grass…Publication Date 2012
- Desert annuals
- Reciprocal introduction
- seed dormancy
- seed size
- soil seed bank
- Aridity gradient
- Hordeum spontaneum
- Avena sterilis
- Bet-hedging
- seeds
- grasses
- seed banks
- rainfall
- ecosystem ecology
- Israel
- Library Collection RecordIn productive agricultural grasslands the relative importance of species identity, species richness and functional group composition for production and yield stability is not clear. We, therefore,…Publication Date 2012
- diversity
- forbs
- grasses
- legume
- Species identity
- Library Collection RecordCynodon dactylon is widely distributed in Iran in diverse habitats. In this study, morphological variation of 46 populations of this species was evaluated based on 52 qualitative and quantitative…Publication Date 2012
- Cynodon dactylon
- taxonomy
- grasses
- plant anatomy
- leaf epidermis
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