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International Journal of Wildland Fire International Journal of Wildland Fire Society
Journal of the International Association of Wildland Fire
RESEARCH ARTICLE

Biomass and litter accumulation patterns in species-rich shrublands for fire hazard assessment

V. C. Westcott A B F , N. J. Enright C , B. P. Miller D , J. B. Fontaine C , J. C. Lade A and B. B. Lamont C E
+ Author Affiliations
- Author Affiliations

A Department of Resource Management and Geography, The University of Melbourne, Parkville, Vic. 3053, Australia.

B Bush Heritage Australia, PO Box 329 Flinders Lane, Melbourne, Vic. 8009, Australia.

C School of Veterinary and Life Sciences, Murdoch University, Perth, WA 6150, Australia.

D Botanic Gardens and Parks Authority, Kings Park, West Perth, WA 6005, Australia.

E Department of Environment and Agriculture, Curtin University, Perth, WA 6845, Australia.

F Corresponding author. Email: vanessa.westcott@bushheritage.org.au

International Journal of Wildland Fire 23(6) 860-871 https://doi.org/10.1071/WF13006
Submitted: 13 January 2013  Accepted: 20 April 2014   Published: 4 August 2014

Abstract

Fuel age is an imprecise surrogate for fire hazard in species-rich Mediterranean-type shrublands. We present an efficient method for aerial biomass and litter estimation of shrublands on sandy and calcareous substrates in south-western Australia that enables fuel accumulation patterns to be compared independently of vegetation age. For sites ranging 3–16 years since last fire, total available fuel loads were 2.7–7.6 t ha–1 for the sandplain and 2.6–8.14 t ha–1 for the calcareous shrublands. Despite calcareous shrublands having higher soil nutrient concentrations and winter rainfall, total available fuel loads were similar between community types over the range of fuel ages examined. Sandplain biomass was dominated by resprouters and calcareous sites, by non-sprouters. Topographic variation in fuel loads was observed among sandplain sites, with greater available biomass and litter on the deeper sands of dunes compared to swales. More rapid fuel accumulation at the youngest sites and more uniform canopy structure in the calcareous shrublands indicate that they have the potential to support fire at shorter intervals than the sandplain. For each community type, an allometric equation based on the relationship between average maximum plant height and total available fuel was derived that enables rapid estimation of fuel loads that is more accurate than using fuel age.

Additional keywords: Banksia, fire interval, fire management, fuel, kwongan, Mediterranean, resprouting.


References

Baeza M, De Luis M, Raventos J, Escarre A (2002) Factors influencing fire behaviour in shrublands of different stand ages and the implications for using prescribed burning to reduce wildfire risk. Journal of Environmental Management 65, 199–208.
Factors influencing fire behaviour in shrublands of different stand ages and the implications for using prescribed burning to reduce wildfire risk.Crossref | GoogleScholarGoogle Scholar | 1:STN:280:DC%2BD38vjvFKjtA%3D%3D&md5=98cea0573442f0b06ebf5d25cb959edfCAS | 12197080PubMed |

Baeza MJ, Raventós J, Escarré A, Vallejo VR (2006) Fire risk and vegetation structural dynamics in Mediterranean shrublands. Plant Ecology 187, 189–201.
Fire risk and vegetation structural dynamics in Mediterranean shrublands.Crossref | GoogleScholarGoogle Scholar |

Beard JS, Pate JS (1986) Foreword. In ‘Kwongan. Plant Life of the Sandplain’. (Eds JS Pate, JS Beard) pp. xvii–xix. (University of Western Australia: Perth, WA)

Bell DT, Hopkins AJM, Pate JS (1984) Fire in the kwongan. In ‘Kwongan. Plant Life of the Sandplain’. (Eds JS Pate, JS Beard) pp. 178–204. (University of Western Australia: Perth, WA)

Bilgili E, Saglam B (2003) Fire behavior in maquis fuels in Turkey. Forest Ecology and Management 184, 201–207.
Fire behavior in maquis fuels in Turkey.Crossref | GoogleScholarGoogle Scholar |

Bowen BJ, Pate JS (1993) The significance of root starch in postfire shoot recovery of the resprouter Stirlingia latifolia R Br (Proteaceae). Annals of Botany 72, 7–16.
The significance of root starch in postfire shoot recovery of the resprouter Stirlingia latifolia R Br (Proteaceae).Crossref | GoogleScholarGoogle Scholar |

Brown JK (1976) Estimating shrub biomass from basal stem diameters. Canadian Journal of Forest Research 6, 153–158.
Estimating shrub biomass from basal stem diameters.Crossref | GoogleScholarGoogle Scholar |

Burrows ND, McCaw WL (1990) Fuel characteristics and bushfire control in banksia low woodlands in Western Australia. Journal of Environmental Management 31, 229–236.
Fuel characteristics and bushfire control in banksia low woodlands in Western Australia.Crossref | GoogleScholarGoogle Scholar |

Byram GM (1959) Combustion of forest fuels. In ‘Forest Fire: Control and Use’. (Ed. KP Davis) pp. 61–89. (McGraw Hill: New York)

Catchpole WR (2002) Fire properties and burn patterns in heterogeneous landscapes. In ‘Flammable Australia: The Fire Regimes and Biodiversity of a Continent’. (Eds RA Bradstock, JE Williams, AM Gill) pp. 49–75. (Cambridge University Press: Cambridge, UK)

Catchpole WR, Bradstock RA, Choate J, Fogarty LG, Gellie N, McCarthy G, McCaw WL, Marsden-Smedley JB, Pearce G (1998) Cooperative development of equations for heathland fire behaviour. In ‘Proceedings of 3rd International Conference on Forest Fire Research and 14th Conference on Fire and Forest Meteorology, Volume II’, 16–20 November 1998, Luso–Coimbra, Portugal. (Ed. DX Viegas) pp. 631–645. (University of Coimbra: Coimbra, Portugal)

Clark NA, Wynne RH, Schmoldt DL, Winn M (2000) An assessment of the utility of a non-metric digital camera for measuring standing trees. Computers and Electronics in Agriculture 28, 151–169.
An assessment of the utility of a non-metric digital camera for measuring standing trees.Crossref | GoogleScholarGoogle Scholar |

Clarke PJ, Lawes MJ, Midgley JJ, Lamont BB, Ojeda F, Burrows GE, Enright NJ, Knox KJE (2013) Tansley review: resprouting as a key functional trait: how buds, protection and resources drive persistence after fire. New Phytologist 197, 19–35.
Tansley review: resprouting as a key functional trait: how buds, protection and resources drive persistence after fire.Crossref | GoogleScholarGoogle Scholar | 1:STN:280:DC%2BC3s%2FptlGmsw%3D%3D&md5=0edd7cf7c5c73b1a56f99289ab34024fCAS | 23110592PubMed |

Clemente AS, Rego FC, Correia OA (1996) Demographic patterns and productivity of post-fire regeneration in Portuguese Mediterranean Maquis. International Journal of Wildland Fire 6, 5–12.
Demographic patterns and productivity of post-fire regeneration in Portuguese Mediterranean Maquis.Crossref | GoogleScholarGoogle Scholar |

Colwell JD (1965) An automatic procedure for the determination of phosphorus in sodium hydrogen carbonate extract of soil. Chemistry & Industry 10, 893–895.

Cruz MG, Gould JS (2010) Fuel and fire behaviour in semi-arid mallee-heath shrublands. In ‘Proceedings of the VI International Conference on Forest Fire Research’, 15–18 November 2010, Coimbra, Portugal. (Ed. DX Viegas) (CD-ROM) (ADAI: Coimbra, Portugal)

Cruz MG, McCaw ML, Anderson WR, Gould JS (2013) Fire behaviour modelling in semi-arid mallee-heath shrublands of southern Australia. Environmental Modelling & Software 40, 21–34.
Fire behaviour modelling in semi-arid mallee-heath shrublands of southern Australia.Crossref | GoogleScholarGoogle Scholar |

Davies GM, Hamilton A, Smith A, Legg CJ (2008) Using visual obstruction to estimate heathland fuel load and structure. International Journal of Wildland Fire 17, 380–389.
Using visual obstruction to estimate heathland fuel load and structure.Crossref | GoogleScholarGoogle Scholar |

De Luis M, Baeza M, Ravents J, Gonzlez-Hidalgo J (2004) Fuel characteristics and fire behaviour in mature Mediterranean gorse shrublands. International Journal of Wildland Fire 13, 79–87.
Fuel characteristics and fire behaviour in mature Mediterranean gorse shrublands.Crossref | GoogleScholarGoogle Scholar |

Delfs JC, Pate JS, Bell DT (1987) Northern sandplain kwongan: community biomass and selected species response to fire. Journal of the Royal Society of Western Australia 69, 133–143.

Díaz-Delgado R, Lloret F, Pons X, Terradas J (2002) Satellite evidence of decreasing resilience in Mediterranean plant communities after recurrent wildfires. Ecology 83, 2293–2303.
Satellite evidence of decreasing resilience in Mediterranean plant communities after recurrent wildfires.Crossref | GoogleScholarGoogle Scholar |

Díaz-Delgado R, Lloret F, Pons X (2003) Influence of severity on plant regeneration by means of remote sensing imagery. International Journal of Remote Sensing 24, 1751–1763.
Influence of severity on plant regeneration by means of remote sensing imagery.Crossref | GoogleScholarGoogle Scholar |

Dimitrakopoulos AP (2002) Mediterranean fuel models and potential fire behaviour in Greece. International Journal of Wildland Fire 11, 127–130.
Mediterranean fuel models and potential fire behaviour in Greece.Crossref | GoogleScholarGoogle Scholar |

Enright NJ, Lamont BB (1992a) Recruitment variability in the resprouting shrub Banksia attenuata and the non-sprouting congeners in the northern sandplain heaths of southwestern Australia. Acta Oecologica 13, 727–741.

Enright NJ, Lamont BB (1992b) Survival, growth and water relations of Banksia seedlings on a sand mine rehabilitation site and adjacent scrub-heath sites. Journal of Applied Ecology 29, 663–671.
Survival, growth and water relations of Banksia seedlings on a sand mine rehabilitation site and adjacent scrub-heath sites.Crossref | GoogleScholarGoogle Scholar |

Enright NJ, Marsula R, Lamont BB, Wissel C (1998) The ecological significance of canopy seed storage in fire-prone environments: a model for non-resprouting shrubs. Journal of Ecology 86, 946–959.
The ecological significance of canopy seed storage in fire-prone environments: a model for non-resprouting shrubs.Crossref | GoogleScholarGoogle Scholar |

Enright NJ, Mosner E, Miller BP, Johnson N, Lamont BB (2007) Soil vs. canopy seed storage and plant species coexistence in species-rich Australian shrublands. Ecology 88, 2292–2304.
Soil vs. canopy seed storage and plant species coexistence in species-rich Australian shrublands.Crossref | GoogleScholarGoogle Scholar | 1:STN:280:DC%2BD2srps1SltQ%3D%3D&md5=6888d671a7213fd81c43a915db85f7ebCAS | 17918407PubMed |

Enright NJ, Clarke M, Keith D, Miller BP (2012) Australian sclerophyllous shrubby ecosystems: heathlands, heathy woodlands and mallee woodlands. In ‘Flammable Australia: Fire Regimes and Biodiversity in a Changing World’. (Eds R Bradstock, A Gill, R Williams) pp. 215–234. (CSIRO Publishing: Melbourne)

Escudero A, del Arco JM, Sanz IC, Ayala J (1992) Effects of leaf longevity and retranslocation efficiency on the retention time of nutrients in the leaf biomass of different woody species. Oecologia 90, 80–87.
Effects of leaf longevity and retranslocation efficiency on the retention time of nutrients in the leaf biomass of different woody species.Crossref | GoogleScholarGoogle Scholar |

Esther A, Groeneveld J, Enright NJ, Miller BP, Lamont BB, Perry GLW, Schurr FM, Jeltsch F (2008) Assessing the importance of seed immigration on coexistence of plant functional types in a species-rich ecosystem. Ecological Modelling 213, 402–416.
Assessing the importance of seed immigration on coexistence of plant functional types in a species-rich ecosystem.Crossref | GoogleScholarGoogle Scholar |

Fernandes PAM (2001) Fire spread prediction in shrub fuels in Portugal. Forest Ecology and Management 144, 67–74.
Fire spread prediction in shrub fuels in Portugal.Crossref | GoogleScholarGoogle Scholar |

Fernandes PM, Catchpole WR, Rego FC (2000) Shrubland fire behaviour modelling with microplot data. Canadian Journal of Forest Research 30, 889–899.
Shrubland fire behaviour modelling with microplot data.Crossref | GoogleScholarGoogle Scholar |

Fontaine JB, Westcott VC, Enright NJ, Lade JC, Miller BP (2012) Fire behaviour in south-western Australian shrublands: evaluating the influence of fuel age and fire weather. International Journal of Wildland Fire 21, 385–395.
Fire behaviour in south-western Australian shrublands: evaluating the influence of fuel age and fire weather.Crossref | GoogleScholarGoogle Scholar |

García M, Riaño D, Chuvieco E, Danson FM (2010) Estimating biomass carbon stocks for a Mediterranean forest in central Spain using LiDAR height and intensity data. Remote Sensing of Environment 114, 816–830.
Estimating biomass carbon stocks for a Mediterranean forest in central Spain using LiDAR height and intensity data.Crossref | GoogleScholarGoogle Scholar |

Gill AM (1981) Adaptive responses of Australian vascular plant species to fire. In ‘Fire and the Australian Biota’. (Eds AM Gill, RH Groves, IR Noble) pp. 243–272. (Australian Academy of Science: Canberra, ACT)

Gosper CR, Yates CJ, Prober SM (2012a) Changes in plant species and functional composition with time since fire in two Mediterranean climate plant communities. Journal of Vegetation Science 23, 1071–1081.
Changes in plant species and functional composition with time since fire in two Mediterranean climate plant communities.Crossref | GoogleScholarGoogle Scholar |

Gosper CR, Yates CJ, Prober SM, Parsons BC (2012b) Contrasting changes in vegetation structure and diversity with time since fire in two Australian Mediterranean-climate plant communities. Austral Ecology 37, 164–174.
Contrasting changes in vegetation structure and diversity with time since fire in two Australian Mediterranean-climate plant communities.Crossref | GoogleScholarGoogle Scholar |

Hansen A, Pate JS, Hansen AP (1991) Growth and reproductive-performance of a seeder and a resprouter species of Bossiaea as a function of plant-age after fire. Annals of Botany 67, 497–509.

He T, Lamont BB, Downes KS (2011) Banksia born to burn. New Phytologist 191, 184–196.
Banksia born to burn.Crossref | GoogleScholarGoogle Scholar | 21388378PubMed |

Hnatiuk RJ, Hopkins AJM (1981) An ecological analysis of kwongan vegetation south of Eneabba, Western Australia. Australian Journal of Ecology 6, 423–438.
An ecological analysis of kwongan vegetation south of Eneabba, Western Australia.Crossref | GoogleScholarGoogle Scholar |

Jones R, Groves RH, Specht RL (1969) Growth of heath vegetation. III. Growth curves for heaths in South Australia: a reassessment. Australian Journal of Botany 17, 309–314.
Growth of heath vegetation. III. Growth curves for heaths in South Australia: a reassessment.Crossref | GoogleScholarGoogle Scholar |

Keeley JE (1986) Resilience of Mediterranean shrub communities to fire. In ‘Resilience in Mediterranean-type Ecosystems’. (Eds B Dell, AJM Hopkins, BB Lamont) pp. 95–112. (Dr W Junk Publishers: Dordrecht, the Netherlands)

Keeley SC, Keeley JE, Hutchinson SM, Johnson AW (1981) Postfire succession of the herbaceous flora in southern Californian chaparral. Ecology 62, 1608–1621.
Postfire succession of the herbaceous flora in southern Californian chaparral.Crossref | GoogleScholarGoogle Scholar |

Keeley JE, Fotheringham CJ, Baer-Keeley M (2005) Determinants of post-fire recovery and succession in Mediterranean-climate shrublands of California. Ecological Applications 15, 1515–1534.
Determinants of post-fire recovery and succession in Mediterranean-climate shrublands of California.Crossref | GoogleScholarGoogle Scholar |

Knox KJE, Clarke PJ (2006) Response of resprouting shrubs to repeated fires in the dry sclerophyll forest of Gibraltar Range National Park. Proceedings of the Linnean Society of New South Wales 127, 49–56.

Lamont BB (1995) Mineral nutrient relations in mediterranean regions of California, Chile and Australia. In ‘Ecology and Biogeography of Mediterranean Ecosystems in Chile, California and Australia’. (Eds MT Arroya, PH Zedler, MD Fox) pp. 211–235. (Springer Verlag: New York)

Lamont BB, Enright NJ, Bergl SM (1989) Coexistence and competitive exclusion of Banksia hookeriana in the presence of congeneric seedlings along a topographic gradient. Oikos 56, 39–42.
Coexistence and competitive exclusion of Banksia hookeriana in the presence of congeneric seedlings along a topographic gradient.Crossref | GoogleScholarGoogle Scholar |

Low AB, Lamont BB (1990) Aerial and belowground phytomass of Banksia scrub-heath at Eneabba, south-western Australia. Australian Journal of Botany 38, 351–359.
Aerial and belowground phytomass of Banksia scrub-heath at Eneabba, south-western Australia.Crossref | GoogleScholarGoogle Scholar |

Malanson GP, Trabaud L (1988) Vigor of post-fire resprouting by Quercus coccifera L. Journal of Ecology 76, 351–365.
Vigor of post-fire resprouting by Quercus coccifera L.Crossref | GoogleScholarGoogle Scholar |

McCaw WL, Smith RH, Neal JE (1997) Prescribed burning of thinning slash in regrowth stands of Karri (Eucalyptus diversicolor). 1. Fire characteristics, fuel consumption and tree damage. International Journal of Wildland Fire 7, 29–40.
Prescribed burning of thinning slash in regrowth stands of Karri (Eucalyptus diversicolor). 1. Fire characteristics, fuel consumption and tree damage.Crossref | GoogleScholarGoogle Scholar |

Miller BP, Enright NJ, Lamont BB (2007) Range contraction, real and imagined, in Banksia hookeriana, a restricted endemic shrub of south-western Australia. Diversity & Distributions 13, 406–417.
Range contraction, real and imagined, in Banksia hookeriana, a restricted endemic shrub of south-western Australia.Crossref | GoogleScholarGoogle Scholar |

Mitchell DT, Coley PGF, Webb S, Allsopp N (1986) Litterfall and decomposition processes in the coastal fynbos vegetation, south-western Cape, South Africa. Journal of Ecology 74, 977–993.
Litterfall and decomposition processes in the coastal fynbos vegetation, south-western Cape, South Africa.Crossref | GoogleScholarGoogle Scholar |

Moritz MA (2003) Spatiotemporal analysis of controls on shrubland fire regimes: age dependency and fire hazard. Ecology 84, 351–361.
Spatiotemporal analysis of controls on shrubland fire regimes: age dependency and fire hazard.Crossref | GoogleScholarGoogle Scholar |

Moritz MA, Keeley JE, Johnson EA, Schaffner AA (2004) Testing a basic assumption of shrubland fire management: how important is fuel age? Frontiers in Ecology and the Environment 2, 67–72.
Testing a basic assumption of shrubland fire management: how important is fuel age?Crossref | GoogleScholarGoogle Scholar |

Morrison DA, Renwick JA (2000) Effects of variation in fire intensity on regeneration of co-occurring species of small trees in the Sydney region. Australian Journal of Botany 48, 71–79.
Effects of variation in fire intensity on regeneration of co-occurring species of small trees in the Sydney region.Crossref | GoogleScholarGoogle Scholar |

Ohmann LF, Grigal DF, Brander RB (1976) Biomass estimation for five shrubs from north-eastern Minnesota. USDA Forest Service, North Central Forest Experiment Station, Research Paper NC-133, 1–11. (St Paul, MN)

Olson J (1963) Energy storage and the balance of producers and decomposers in ecological systems. Ecology 44, 322–331.
Energy storage and the balance of producers and decomposers in ecological systems.Crossref | GoogleScholarGoogle Scholar |

Pearce HG, Anderson WR, Fogarty LG, Todoroki CL, Anderson SAJ (2010) Linear mixed-effects models for estimating biomass and fuel loads in shrublands. Canadian Journal of Forest Research 40, 2015–2026.
Linear mixed-effects models for estimating biomass and fuel loads in shrublands.Crossref | GoogleScholarGoogle Scholar |

Perry GLW, Enright NJ, Miller BP, Lamont BB (2008) Spatial patterns in species-rich sclerophyll shrublands of southwestern Australia. Journal of Vegetation Science 19, 705–716.
Spatial patterns in species-rich sclerophyll shrublands of southwestern Australia.Crossref | GoogleScholarGoogle Scholar |

Pyne SJ, Andrews PL, Laven RD (1996) ‘Introduction to Wildland Fire’, 2nd edn, (Wiley: New York)

R Core Team (2012) R: a language and environment for statistical computing. (R Foundation for Statistical Computing: Vienna, Austria) Available at http://www.R-project.org/ [Verified 26 May 2014]

Radloff FGT, Mucina L (2007) A quick and robust method for biomass estimation in structurally diverse vegetation. Journal of Vegetation Science 18, 719–724.
A quick and robust method for biomass estimation in structurally diverse vegetation.Crossref | GoogleScholarGoogle Scholar |

Rundel PW, Parsons DJ (1979) Structural changes in chamise (Adenostoma fasciculatum) along a fire-induced age gradient. Journal of Range Management 32, 462–466.
Structural changes in chamise (Adenostoma fasciculatum) along a fire-induced age gradient.Crossref | GoogleScholarGoogle Scholar |

Russell-Smith J, Edwards A, Cook GD (2003) Reliability of biomass burning estimates from savanna fires: biomass burning in northern Australia during the 1999 Biomass Burning and Lightning Experiment B field campaign. Journal of Geophysical Research – Atmospheres 108, 8405
Reliability of biomass burning estimates from savanna fires: biomass burning in northern Australia during the 1999 Biomass Burning and Lightning Experiment B field campaign.Crossref | GoogleScholarGoogle Scholar |

Saglam B, Kucuk O, Bilgili E, Dinc Durmaz B, Baysal İ (2008a) Estimating fuel biomass of some shrub species (maquis) in Turkey. Turkish Journal of Agriculture and Forestry 32, 349–356.

Saglam B, Bilgili E, Kucuk O, Dinc Durmaz B (2008b) Fire behavior in Mediterranean shrub species (maquis). African Journal of Biotechnology 7, 4122–4129.

Samimi C, Kraus T (2004) Biomass estimation using Landsat-TM and -ETM+. Towards a regional model for Southern Africa? GeoJournal 59, 177–187.
Biomass estimation using Landsat-TM and -ETM+. Towards a regional model for Southern Africa?Crossref | GoogleScholarGoogle Scholar |

Schneider BH, Bell DT (1985) A simple, effective technique for rapid measurement of fuels in low shrub communities. Australian Forest Research 15, 79–84.

Searle PL (1984) The Berthelot or indophenol reaction and its use in the analytical chemistry of nitrogen. Analyst (London) 109, 549–568.
The Berthelot or indophenol reaction and its use in the analytical chemistry of nitrogen.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DyaL2cXlsVartbk%3D&md5=c3a811570a7ef1f670f8a69a91da8f00CAS |

Sneeuwjagt RJ, Peet GB (1985) ‘Forest Fire Behaviour Tables for Western Australia.’ (Department of Conservation and Land Management: Perth, WA)

Specht RL (1981) Responses to fires in heathlands and related shrublands. In ‘Fire and the Australian Biota’. (Eds AM Gill, Groves, IR Noble) pp. 395–415. (Australian Academy of Science: Canberra, ACT)

SYSTAT (2007) ‘Systat: Version for Windows.’ (Systat Software Inc.: Richmond, CA)

Usó JL, Mateu J, Karjalainen T, Salvador P (1997) Allometric regression equations to determine aerial biomasses of Mediterranean shrubs. Plant Ecology 132, 59–69.
Allometric regression equations to determine aerial biomasses of Mediterranean shrubs.Crossref | GoogleScholarGoogle Scholar |

van Wilgen BW (1982) Some effects of post-fire age on the above-ground plant biomass of fynbos (macchia) vegetation in South Africa. Journal of Ecology 70, 217–225.
Some effects of post-fire age on the above-ground plant biomass of fynbos (macchia) vegetation in South Africa.Crossref | GoogleScholarGoogle Scholar |

Vora RS (1988) Predicting biomass of five shrub species in north eastern California. Journal of Range Management 41, 63–65.
Predicting biomass of five shrub species in north eastern California.Crossref | GoogleScholarGoogle Scholar |

Westman WE, Oleary JF (1986) Measures of resilience – the response of coastal sage scrub to fire. Vegetatio 65, 179–189.
Measures of resilience – the response of coastal sage scrub to fire.Crossref | GoogleScholarGoogle Scholar |

Witkowski ETF, Lamont BB, Walton CS, Radford S (1992) Leaf demography, sclerophylly and ecophysiology of two Banksia species with contrasting leaf life spans. Australian Journal of Botany 40, 849–862.
Leaf demography, sclerophylly and ecophysiology of two Banksia species with contrasting leaf life spans.Crossref | GoogleScholarGoogle Scholar |