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W. Bond, S. Archibald (2003)
Confronting complexity: fire policy choices in South African savanna parksInternational Journal of Wildland Fire, 12
N. Gureja, N. Owen‐Smith (2002)
Comparative use of burnt grassland by rare antelope species in a lowveld game ranch, South AfricaSouth African Journal of Wildlife Research - 24-month delayed open access, 32
D. Milchunas, W. Lauenroth (1993)
Quantitative Effects of Grazing on Vegetation and Soils Over a Global Range of EnvironmentsEcological Monographs, 63
B. Wilsey (1996)
Variation in use of green flushes following burns among African ungulate species: the importance of body sizeAfrican Journal of Ecology, 34
S. Moe, P. Wegge, E. Kapela (1990)
The influence of man-made fires on large wild herbivores in Lake Burungi area in northern Tanzania.African Journal of Ecology, 28
N. Owen‐Smith (1996)
Ecological guidelines for waterpoints in extensive protected areasSouth African Journal of Wildlife Research - 24-month delayed open access, 26
D. Bransby, N. Tainton (1977)
The disc pasture meter : Possible applications in grazing managementAfrican Journal of Range & Forage Science, 12
S. Pearson, M. Turner, L. Wallace, W. Romme (1995)
WINTER HABITAT USE BY LARGE UNGULATES FOLLOWING FIRE IN NORTHERN YELLOWSTONE NATIONAL PARKEcological Applications, 5
R. Cowling, D. Richardson, S. Pierce (1997)
Vegetation of southern Africa
H. Akaike (1983)
Information measures and model selection, 50
R. Senft, M. Coughenour, D. Bailey, L. Rittenhouse, O. Sala, D. Swift (1987)
Large Herbivore Foraging and Ecological HierarchiesLandscape ecology can enhance traditional foraging theoryBioScience, 37
M. Turner, W. Romme, R. Gardner, W. Hargrove (1997)
EFFECTS OF FIRE SIZE AND PATTERN ON EARLY SUCCESSION IN YELLOWSTONE NATIONAL PARKEcological Monographs, 67
A. Knapp (1998)
Grassland dynamics : long-term ecological research in tallgrass prairie
M. Turner, R. Congalton (1998)
Classification of multi-temporal SPOT-XS satellite data for mapping rice fields on a West African floodplainInternational Journal of Remote Sensing, 19
D. Balfour, Oe Howison (2002)
Spatial and temporal variation in a mesic savanna fire regime: responses to variation in annual rainfallAfrican Journal of Range & Forage Science, 19
N. Hobbs, D. Schimel, C. Owensby, D. Ojima (1991)
Fire and Grazing in the Tallgrass Prairie: Contingent Effects on Nitrogen BudgetsEcology, 72
A. Parker (1982)
THE TOPOGRAPHIC RELATIVE MOISTURE INDEX: AN APPROACH TO SOIL-MOISTURE ASSESSMENT IN MOUNTAIN TERRAINPhysical Geography, 3
F. Marques, S. Buckland, David Goffin, Camilla Dixon, D. Borchers, B. Mayle, A. Peace (2001)
Estimating deer abundance from line transect surveys of dung: sika deer in southern ScotlandJournal of Applied Ecology, 38
C. Vijver, P. Poot, H. Prins (1999)
Causes of increased nutrient concentrations in post-fire regrowth in an East African savannaPlant and Soil, 214
D. Augustine, S. McNaughton (1998)
Ungulate effects on the functional species composition of plant communities; herbivore selectivity and plant toleranceJournal of Range Management, 62
W. Bond, GF Midgley, F. Woodward (2003)
What controls South African vegetation — climate or fire?South African Journal of Botany, 69
R. Senft, L. Rittenhouse, R. Woodmansee (1983)
The use of regression models to predict spatial patterns of cattle behavior.Journal of Range Management, 36
S. Langley, Heather Cheshire, K. Humes (2001)
A comparison of single date and multitemporal satellite image classifications in a semi-arid grasslandJournal of Arid Environments, 49
A. Whateley, R. Porter (1983)
The woody vegetation communities of the Hluhluwe-Corridor- Umfolozi Game Reserve ComplexBothalia, 14
J. Pastor, B. Dewey, R. Moen, D. Mladenoff, Mark White, Y. Cohen (1998)
SPATIAL PATTERNS IN THE MOOSE–FOREST–SOIL ECOSYSTEM ON ISLE ROYALE, MICHIGAN, USAEcological Applications, 8
A. Belsky (1992)
Effects of grazing, competition, disturbance and fire on species composition and diversity in grassland communitiesJournal of Vegetation Science, 3
E. Laca, G. Lemaire, J. Hodgson, A. Moraes, C. Nabinger, P. Carvalho (2000)
Modelling spatial aspects of plant-animal interactions.
M. Stalmans, E. Witkowski, K. Balkwill (2002)
Evaluating the ecological relevance of habitat maps for wild herbivoresJournal of Range Management, 55
K. Burnham, David Anderson (2003)
Model selection and multimodel inference : a practical information-theoretic approachJournal of Wildlife Management, 67
D. Fairbanks, M. Thompson (1996)
ASSESSING LAND-COVER MAP ACCURACY FOR THE SOUTH AFRICAN LAND-COVER DATABASESouth African Journal of Science, 92
M. Hall (1984)
Man’s Historical and Traditional Use of Fire in Southern AfricaEcological studies
S. Collins (1987)
INTERACTION OF DISTURBANCES IN TALLGRASS PRAIRIE: A FIELD EXPERIMENT'Ecology, 68
S. Zimov, V. Chuprynin, A. Oreshko, F. Chapin, J. Reynolds, M. Chapin (1995)
Steppe-Tundra Transition: A Herbivore-Driven Biome Shift at the End of the PleistoceneThe American Naturalist, 146
M. Lawes, R. Nanni (1993)
The density, habitat use and social organisation of Dorcas Gazelles (Gazella dorcas) in Makhtesh Ramon, Negev Desert, IsraelJournal of Arid Environments, 24
R. Owen-Smith (1988)
Megaherbivores: Morphology, evolutionary history and recent distribution
T. Flannery (1994)
The Future Eaters
R. Congalton (2001)
Accuracy assessment and validation of remotely sensed and other spatial informationInternational Journal of Wildland Fire, 10
W. Bond, K. Smythe, D. Balfour (2001)
Acacia species turnover in space and time in an African savannaJournal of Biogeography, 28
I. Noy‐Meir (1995)
Interactive effects of fire and grazing on structure and diversity of Mediterranean grasslandsJournal of Vegetation Science, 6
N. Haddad, K. Baum (1999)
AN EXPERIMENTAL TEST OF CORRIDOR EFFECTS ON BUTTERFLY DENSITIESEcological Applications, 9
T. O’Connor (1994)
Composition and population responses of an African savanna grassland to rainfall and grazingJournal of Applied Ecology, 31
B. Page, B. Walker (1978)
Feeding niches of four large herbivores in the hluhluwe game reserve, natal 1African Journal of Range & Forage Science, 13
S. Fuhlendorf, D. Engle (2001)
Restoring Heterogeneity on Rangelands: Ecosystem Management Based on Evolutionary Grazing Patterns, 51
M. Coughenour (1991)
Invited Synthesis Paper: Spatial Components of Plant-Herbivore Interactions in Pastoral, Ranching, and Native Ungulate EcosystemsJournal of Range Management, 44
R. Mack, J. Thompson (1982)
Evolution in Steppe with Few Large, Hooved MammalsThe American Naturalist, 119
R. Fynn, T. O’Connor (2000)
Effect of stocking rate and rainfall on rangeland dynamics and cattle performance in a semi‐arid savanna, South AfricaJournal of Applied Ecology, 37
M. Turner, R. Gardner (1991)
Quantitative methods in landscape ecology : the analysis and interpretation of landscape heterogeneity
J. Clark, A. Gill, A. Kershaw, R. Bradstock, J. Williams (2002)
Spatial variability in fire regimes: its effects on recent and past vegetation.
R. Drent, R. Wal (1999)
Cyclic grazing in vertebrates and the manipulation of the food resource
B. Brock, C. Owensby (2000)
Predictive models for grazing distribution: A GIS approach.Journal of Range Management, 53
I. Moore, R. Grayson, A. Ladson (1991)
Digital terrain modelling: A review of hydrological, geomorphological, and biological applicationsHydrological Processes, 5
N. Haddad (1999)
CORRIDOR AND DISTANCE EFFECTS ON INTERPATCH MOVEMENTS: A LANDSCAPE EXPERIMENT WITH BUTTERFLIESEcological Applications, 9
P. B. Adler, D. A. Raff, W. K. Lauenroth (2001)
The effect of grazing on the spatial heterogeneity of vegetation, 128
M. Vinton, D. Hartnett, E. Finck, J. Briggs (1993)
Interactive Effects of Fire, Bison (Bison bison) Grazing and Plant Community Composition in Tallgrass PrairieAmerican Midland Naturalist, 129
N. Tainton, M. Mentis (1984)
Fire in Grassland, 48
C. Vijver (1999)
Fire and life in Tarangire : effects of burning and herbivory on an East African Savanna system
D. Coppock, J. Detling (1986)
Alteration of Bison and Black-Tailed Prairie Dog Grazing Interaction by Prescribed BurningJournal of Wildlife Management, 50
S. McNaughton (1984)
Grazing Lawns: Animals in Herds, Plant Form, and CoevolutionThe American Naturalist, 124
The effects of fire––grazing interactions on grass communities are difficult to identify because fire and grazing influence each other on a landscape scale. Persistent heavy grazing can prevent the spread of fire by breaking up the grass layer. In contrast, frequent burning might inhibit the persistence of grazed patches by attracting grazers to the post-burn green flush. We explored the effect of burning on grazing activity, and the persistence of grazed patches, in a landscape-level experiment in a South African savanna. We created 17 grazed patches by mowing grass in a 20 m diameter plot, with an adjacent un-mown control. We used dung counts as a measure of grazer visitation, and grass height as a measure of grazing intensity, at each of the sites over a year. Nearly all mowing treatments resulted in a rapid increase in grazing activity relative to controls (on average, 4––6 times more dung was found on mown sites). Subsequent fates of the grazed patches depended on their location with respect to fire. Burned areas drew animals off nearby unburned grazed patches, which then recovered lost biomass. Patches >1.5 km from burns remained grazed short. Frequent large fires might prevent areas of heavy grazing from persisting in the landscape, and thus limit the spread of grazing-adapted grasses. Spatial information on fire frequencies in the park was used to explore the influence that the ““magnet effect”” of fire can have on grass communities. We mapped the distribution of tall, bunch grasslands and grazing-lawn grasslands using a 1999 Landsat TM satellite image. The extent of grazing lawns was directly related to fire return interval. Areas with a fire return of <4 years had less lawn grass than would be expected from the proportions of lawn grass in the park. A logistic regression analysis, which used various environmental variables known to influence grazing, showed fire history to be an important predictor of grazing-lawn distributions. This work shows that, by influencing where, when, and for how long animals graze a patch, fire can influence the competitive balance between grazing-tolerant, and grazing-intolerant grass species and affect their distributions in the landscape. We discuss the implications of this research for the management of natural grazing systems and rangelands.
Ecological Applications – Ecological Society of America
Published: Feb 1, 2005
Keywords: fire frequency ; grass community states ; grazing distributions ; grazing lawns ; heterogeneity; logistic regression ; Hluhluwe-Umfolozi Park, South Africa ; patchiness ; savanna
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