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Fire management in Mediterranean-climate shrublands : a case study from the Cape fynbos, South Africa

dc.contributor.authorVan Wilgen, Brian W.en_ZA
dc.contributor.authorForsyth, Gregory G.en_ZA
dc.contributor.authorDe Klerk, Helenen_ZA
dc.contributor.authorDas, Sonalien_ZA
dc.contributor.authorKhuluse, Sibusisiween_ZA
dc.contributor.authorSchmitz, Peteren_ZA
dc.date.accessioned2016-05-09T05:48:20Z
dc.date.available2016-05-09T05:48:20Z
dc.date.issued2010
dc.identifier.citationVan Wilgen, B. W. et al. 2010. Fire management in Mediterranean-climate shrublands: a case study from the Cape fynbos, South Africa. Journal of Applied Ecology, 47(3):631–638, doi: 10.1111/j.1365-2664.2010.01800.x.en_ZA
dc.identifier.issn1365-2664 (online)
dc.identifier.other10.1111/j.1365-2664.2010.01800.x
dc.identifier.urihttp://hdl.handle.net/10019.1/98980
dc.descriptionCITATION: Van Wilgen, B. W. et al. 2010. Fire management in Mediterranean-climate shrublands: a case study from the Cape fynbos, South Africa. Journal of Applied Ecology, 47(3):631–638, doi: 10.1111/j.1365-2664.2010.01800.x.en_ZA
dc.descriptionThe original publication is available at http://onlinelibrary.wiley.comen_ZA
dc.description.abstractSummary: 1. Fire is an important process in Mediterranean-ecosystem shrublands, and prescribed burning is often used to manage these ecosystems. Analyses of past fire regimes are required to interpret biotic responses to fire, as well as to assess the degree to which management interventions have been able to influence the fire regime. 2. We used a spatial data base of fires within 10 protected areas covering >720 000 ha to examine the frequency, seasonality, size and cause of fires over four decades. Our study covered five fire climate zones and a range of mountain fynbos shrubland types. We examined whether regular prescribed burning would be necessary to rejuvenate the vegetation, and also to reduce the incidence and extent of wildfires. 3. Cumulative fire frequency distributions indicated that the probability of fire was not strongly affected by post-fire age, with 50% of the area experiencing a successive fire within 10–13 years after the previous fire in most areas. This suggests that the accumulation of fuel did not limit the occurrence of wildfires, and that regular prescribed burning would not necessarily reduce the risk of wildfires. 4. Inland zones experienced more severe fire weather than coastal zones (∼35% vs. 11–19% of days with high to very high fire danger, respectively). Despite these differences, fire return periods were similar (10–13 years), suggesting that the availability of ignitions, and not fuel or weather, limited the occurrence of wildfires. 5. Despite a policy that promoted prescribed burning, a relatively small area (between 4·6% and 32·4% of the area of all fires) burned in prescribed burns. Seasonal restrictions for safety and ecological reasons, the imperative to integrate planned fires with invasive alien plant treatments and unplanned wildfires have all contributed to the relatively small area that burnt in prescribed burns. 6. Synthesis and applications. Recurrent wildfires, and not prescribed burning, are providing sufficient opportunities for fire-stimulated regeneration in fynbos ecosystems. Because of this, and because burning to reduce fuel loads is unlikely to prevent wildfires, there should be less pressure to conduct prescribed burning. The predicted growth in human populations in all areas is expected to increase the number of ignition opportunities and the frequency of fires, with detrimental consequences for biodiversity conservation and the control of invasive alien trees. Fire frequency should thus be monitored and steps should be taken to protect areas that burn too frequently.en_ZA
dc.description.urihttp://onlinelibrary.wiley.com/doi/10.1111/j.1365-2664.2010.01800.x/abstract;jsessionid=62732499C580F8EE846FB793F076E75F.d03t02
dc.format.extent8 pages : illustrationsen_ZA
dc.language.isoen_ZAen_ZA
dc.publisherWiley Onlineen_ZA
dc.subjectMediterranean-climate ecosystem -- Fire managementen_ZA
dc.subjectInvasive alien plants -- Controlen_ZA
dc.subjectBiodiversity conservationen_ZA
dc.subjectEcosystem managementen_ZA
dc.titleFire management in Mediterranean-climate shrublands : a case study from the Cape fynbos, South Africaen_ZA
dc.typeArticleen_ZA
dc.description.versionPost-printen_ZA
dc.rights.holderAuthors retain copyrighten_ZA


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