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Resprouting responses of Acacia shrubs in the Western Desert of Australia - fire severity, interval and season influence survival

, : Resprouting responses of Acacia shrubs in the Western Desert of Australia - fire severity, interval and season influence survival. International Journal of Wildland Fire 16(3): 317-323

The hummock grasslands of arid Australia are fire-prone ecosystems in which the perennial woody plants mostly resprout after fire. The resprouting ability among these species is poorly understood in relation to environmental variation; consequently, little is known about the impacts that contemporary fire regimes are having on vegetation within these systems. We examined the resprouting ability of adults and juveniles of four widespread Acacia species (A. aneura, A. kempeana, A. maitlandii, A. melleodora) by experimentally testing the effects of fire severity, interval and season. We found that fire severity and season strongly affected survival, but the magnitude of the effects was variable among the species. Unexpectedly, a short fire interval of 2 years did not have a strong negative effect on resprouting of any species. Fire severity had variable effects among the four species, with those species with more deeply buried buds being more resilient to high-severity soil heating than those with shallow buds. Season of fire also strongly affected survival of some species, and we propose that seasonal variation in soil heating and soil moisture mediated these effects. The species by environment interactions we observed within one functional group (resprouters with a soil-stored seed bank) and in one genus suggest that modelling landscape response to fire regimes will be complex in these arid ecosystems. We predict, however, that the dominant resprouting acacias in hummock grasslands of central Australia are highly resilient to a range of fire regimes.


DOI: 10.1071/WF06094

Other references

Allen, J.R., 1988: Health care workers and the risk of HIV transmission. Hastings Center Report 18(2): Suppl 2-5

Sutton, B.C., 1977: Coelomycetes part 6 nomenclature of generic names proposed for coelomycetes. A treatment concerning itself only with nomenclatural problems of the pycnidial and acervular Coelomycetes which provides a preliminary framework for later taxonomic studies was presented. Generic names are considered acceptable because they are v...

Yamaguchi, M.; Tonoike, M.; Kaetsu, I.; Koizuka, I., 1998: Two olfactory centers in the human brain detected by MEG. Koga, Y [Editor], Nagata, K [Editor], Hirata, K [Editor] International Congress Series; Brain topography today 740-743

Kumari, H.; Balasubramanian, D.; Zincke, D.; Mathee, K., 2014: Role of Pseudomonas aeruginosa AmpR on β-lactam and non-β-lactam transient cross-resistance upon pre-exposure to subinhibitory concentrations of antibiotics. Pseudomonas aeruginosa is one of the most dreaded opportunistic pathogens accounting for 10 % of hospital-acquired infections, with a 50 % mortality rate in chronically ill patients. The increased prevalence of drug-resistant isolates is a maj...

Gino, F.; Brooks, A.Wood.; Schweitzer, M.E., 2012: Anxiety, advice, and the ability to discern: feeling anxious motivates individuals to seek and use advice. Across 8 experiments, the influence of anxiety on advice seeking and advice taking is described. Anxious individuals are found to be more likely to seek and rely on advice than are those in a neutral emotional state (Experiment 1), but this patter...

Zurbrugg, C.; Frank, T., 2006: Factors influencing bug diversity (Insecta: Heteroptera) in semi-natural habitats. We investigated the abundance and species richness of heteropteran bugs and explored environmental factors which influence bug diversity in three types of semi-natural habitats (wildflower areas, extensively used meadows, extensively grazed pastur...

Barakova, A.G., 1957: Lipomatous substitution of the kidney. Urologiia 22(2): 42-43

Alaupovic P.; Bekaert E.D.; Koren E., 1990: Isolation characterization and quantitation of subclasses of plasma lipoproteins defined by their apolipoprotein composition. Lenfant, C , Et Al (Ed ) Atherosclerosis Reviews, Vol 20 Biotechnology Of Dyslipoproteinemias: Applications in Diagnosis And Control; Symposium, Milan, Italy, May 8-10, 1989 Xxi+330p Raven Press: New York, New York, Usa Illus 179-188

Olson, E.Z.; Selders, N.J., 1986: Nursing procedures for intraperitoneal administration of cis-platin and Ara-C in the community hospital. Progress in Clinical and Biological Research 216: 367-375

Anonymous, 1990: AFB Practitioners' Forum. American Journal of Health Promotion 5(2): 89-90