Topography and forest composition affecting the variability in fire severity and post-fire regeneration occurring after a large fire in the Mediterranean basin
Maria José Broncano A and Javier Retana A B
+ Author Affiliations
- Author Affiliations
A Unidad de Ecología y CREAF, Facultad de Ciencias, Universidad Autónoma de Barcelona, E-08193 Bellaterra (Barcelona), Spain.
B Corresponding author. Telephone: +34 3 5812028; fax: +34 3 5814151; e-mail: javier.retana@uab.es
International Journal of Wildland Fire 13(2) 209-216 https://doi.org/10.1071/WF03036
Submitted: 20 March 2003 Accepted: 1 December 2003 Published: 29 June 2004
Abstract
This study relates the spatial variability in tree regeneration generated by fire with topography and pre-fire vegetation composition, and analyses how the pattern of fire severities determines post-fire regeneration of the dominant tree species (Pinus halepensis and Quercus ilex) in a large fire that occurred in north-eastern Spain in summer 1994. At the fire level, the proportion of the different fire severities in the burned area was characteristic of large fires that burn with high severity. At the level of plot, the variability of fire severity in the study site depended on two topographic characteristics: elevation and aspect. Plots burned with high fire severity were distributed at higher altitude than less severely burned plots, which were mainly distributed in south- and east-facing slopes. Fire severity also increased with Q. ilex density in the stand. The mosaic of fire severities determined both plant mortality and seedling regeneration. Mortality of stems caused by fire was very high in both species, but many Q. ilex individuals resprouted after fire. Seedling regeneration of P. halepensis showed large differences among plots in the burned area, reflecting large spatial variability due to the elevation gradient, the variation in density of adult pine trees, and the spatial variability created by fire.
Additional keywords: mortality; resprouting; post-fire regeneration; Pinus halepensis; Quercus ilex.
Acknowledgements
We thank Mike Flannigan for his helpful comments on an earlier draft of the manuscript.
References
Abbas H, Barbero M , Loisel R (1984) Réflexions sur le dynamisme actuel de la régenération naturelle du pin d'Alep (Pinus halepensis Mill.) dans les pinèdes incendiées en Provence calcaire (de 1973 à 1979). Ecologia méditerranea 10, 85–95.
Agee K (1993) ‘Fire ecology of Pacific northwest forests.’ (Island Press: Washington, D.C.)
Agee K (1998) Fire and pine ecosystems. In
Arianoutsou M (1998) Aspects of demography in post-fire Mediterranean plant communities of Greece. In
Bessie WC , Johnson EA (1995) The relative importance of fuels and weather on fire behaviour in subalpine forests. Ecology 76, 747–762.
Bond WJ, van Wilgen BW (1996) ‘Fire and plants.’ (Chapman and Hall: London)
Broncano MJ (2000). Patrones observados y factores que determinan la variabilidad espacio-temporal de la regeneración del pino carrasco (Pinus halepensis) después de un incendio. PhD thesis, Autonomous University of Barcelona, Barcelona.
Canadell J , López-Soria L (1998) Lignotuber reserves support regrowth following clipping of two Mediterranean shrubs. Functional Ecology 12, 31–38.
| Crossref | GoogleScholarGoogle Scholar |
Canham CD , Marks PL (1985) The response of woody plants to disturbance: patterns of establishment and growth. In
Christensen NL, Agee JK, Brussard PF, Hughes J , Knight DH (1989) Interpreting the Yellowstone fires of 1988. Ecosystem responses and management implications. Bioscience 39, 678–685.
Connell JH , Slatyer RO (1977) Mechanisms of succession in natural communities and their role in community stability and organization. American Naturalist 111, 1119–1144.
| Crossref | GoogleScholarGoogle Scholar |
Daskalakou EN , Thanos CA (1996) Aleppo Pine (Pinus halepensis) postfire regeneration: the role of canopy and soil seed banks. International Journal of Wildland Fire 6, 59–66.
Díaz-Delgado R (2000). Caracterización mediante teledetección del régimen de incendios forestales en Cataluña (periodo 1975–1998) y su influencia en los procesos de regeneración. PhD thesis, Autonomous University of Barcelona, Barcelona.
Drewa PB (2003) Effects of fire season and intensity on Prosopis glandulosa Torr. var. glandulosa. International Journal of Wildland Fire 12, 147–157.
| Crossref | GoogleScholarGoogle Scholar |
Eberhart KE , Woodard PM (1987) Distribution of residual vegetation associated with large fires in Alberta. Canadian Journal of Forest Research 17, 1207–1212.
Espelta JM, Sabaté S , Retana J (1999) Resprouting dynamics. In
Espelta J, Rodrigo A, Habrouk A, Meghelli N, Ordóñez JL , Retana J (2002) Land use changes, natural regeneration patterns, and restoration practices after large wildfire in NE Spain: challenges for fire ecology and landscape restoration. In
Fryer GI , Johnson EA (1988) Reconstructing fire behaviour and effects in a subalpine forest. Journal of Applied Ecology 25, 1063–1072.
Gill AM, Groves RH, Noble IR (1981) ‘Fire and the Australian biota.’ (Australian Academy of Science: Canberra)
Glitzenstein JS, Platt WJ , Streng DR (1995) Effects of fire regime and habitat on tree dynamics in north Florida longleaf pine savannas. Ecological Monographs 65, 441–476.
Gracia C, Burriel JA, Ibáñ;ez JJ, Mata T, Vayreda J (2000) ‘Inventari ecològic i forestal de Catalunya.’ (Publicaciones Centre de Recerca Ecològica i Aplicacions Forestals: Barcelona) Regió forestal IV.
Herranz JM, Martínez-Sánchez JJ, Marín A , Ferrandis P (1997) Postfire regeneration of Pinus halepensis Miller in a semi-arid area in Albacete province (southeastern Spain). Ecoscience 4, 86–90.
Huston MA (1994) ‘Biological diversity: the coexistence of species on changing landscapes.’ (Cambridge University Press: Cambridge, UK)
Ibañez JJ, Pons X , Castro FX (1996) La predicció del risc: models de risc i de propagació. In
Izhaki I , Ne’eman G (2000) Soil seed banks in Mediterranean pine forests. In
Johnson EA (1992) ‘Fire and vegetation dynamics. Studies from the North American boreal forest.’ (Cambridge University Press: Cambridge, UK)
Keeley JE , Zedler P (1978) Reproduction of chaparral shrubs after fire: a comparison of sprouting and seedling strategies. American Midland Naturalist 99, 142–161.
Keeley JE (1986) Resilience of Mediterranean shrub communities to fires. In
Le Houerou HN (1987) Vegetation wildfires in the Mediterranean basin: evolution and trends. Ecologia Mediterranea 11, 13–24.
López-Soria L , Castell C (1992) Comparative genet survival after fire in woody Mediterranean species. Oecologia 91, 493–499.
McKenzie D, Peterson DL , Alvarado E (1996) Extrapolation problems in modeling fire effects at large spatial scales: a review. International Journal of Wildland Fire 6, 165–176.
Moravec J (1990) Regeneration of N.W African Pinus halepensis forests following fire. Vegetatio 87, 29–36.
Nathan R , Ne’eman G (2000) Serotyny, seed dispersal and seed germination in Pinus halepensis. In
Nathan R, Safriel UN, Noy-Meir I , Schiller G (1999) Seed release without fire in Pinus halepensis, a Mediterranean serotinous wind-dispersed tree. Journal of Ecology 87, 659–669.
| Crossref | GoogleScholarGoogle Scholar |
Naveh Z (1975) The evolutionary significance of fire in the Mediterranean region. Vegetatio 29, 199–208.
Ne’eman G, Lahav H , Izhaki I (1992) Spatial pattern of seedlings one year after fire in Mediterranean pine forest. Oecologia 91, 365–370.
Ojeda F, Marañón T , Arroyo J (1996) Postfire regeneration of a Mediterranean heathland in Southern Spain. International Journal of Wildland Fire 6, 191–198.
Pausas JG (1999) Mediterranean vegetation dynamics: modelling problems and functional types. Plant Ecology 140, 27–39.
| Crossref | GoogleScholarGoogle Scholar |
Pausas JG, Ouadah N, Ferran A, Gimeno T , Vallejo R (2003) Fire severity and seedling establishment in Pinus halepensis woodlands, eastern Iberian Peninsula. Plant Ecology 169, 205–213.
| Crossref | GoogleScholarGoogle Scholar |
Piñol J, Terradas J , Lloret F (1998) Climate warming, wildfire hazard, and wildfire occurrence in coastal eastern Spain. Climatic Change 38, 345–357.
| Crossref | GoogleScholarGoogle Scholar |
Pons X , Vayreda J (1996) La predicció del risc: poder calorífic, inflamabilitat i combustibilitat. In
Retana J, Espelta JM , Gracia M (1996) Caracterización de masas mixtas de pino carrasco y encina en el Montseny (nordeste de la Península Ibérica). Cuadernos de la Sociedad Española de Ciencias Forestales 3, 167–173.
Retana J, Espelta JM, Gracia M , Riba M (1999) Seedling recruitment. In
Retana J, Riba M, Castell C , Espelta JM (1992) Regeneration by sprouting of holm-oak (Quercus ilex) stands exploited by selection thinning. Vegetatio 99–100, 355–364.
Retana J, Espelta JM, Habrouk A, Ordóñez JL , Solà-Morales F (2002) 'Regeneration by sprouting of holm-oak (Quercus ilex) stands exploited by selection thinning.' Écoscience 9, 89–97.
Rodrigo A, Retana J , Picó X (In press) Direct regeneration is not the only response of Mediterranean forests to large fires. Ecology ,
Román-Cuesta RM (2002). ‘Human and environmental factors influencing fire trends in different forest ecosystems.’ PhD thesis, Autonomous University of Barcelona, Barcelona.
Saracino A, Leone V , De Natale F (1993) Permanent plots for the study of natural regeneration after fire of Pinus halepensis in a dunal environment. Annali di Botanica 51, 209–217.
Schullery P (1989) The fires and fire policy. Bioscience 39, 686–694.
Terradas J , Piñol J (1996) Els grans incendis: condicions metereològiques i de vegetació per al seu desenvolupament. In
Trabaud L (1977) Materiali combustibiliti e fitomasse epigee di alcuni popolamenti del mediterraneo francese. Monti e Boschi 28, 45–49.
Trabaud L (1981) Man and fire: impacts on Mediterranean vegetation. In
Trabaud L (1987) Dynamics after fire of sclerophyllous plant communities in the Mediterranean basin. Ecologia Mediterranea 13, 25–37.
Trabaud L (1989) ‘Les feux de forêts: Mécanismes, comportement et environment.’
Trabaud L, Michels C , Grosman J (1985) Recovery of burnt Pinus halepensis Mill. Forests II. Pine reconstitution after wildfire. Forest Ecology and Management 13, 167–179.
| Crossref | GoogleScholarGoogle Scholar |
Tsitsoni T (1997) Conditions determining natural regeneration after wildfires in the Pinus halepensis forests of Kassandra Peninsula (North Greece). Forest Ecology and Management 92, 199–208.
| Crossref | GoogleScholarGoogle Scholar |
Turner M, Hargrove WW, Gardner RH , Romme WH (1994) Effects of fire on landscape heterogeneity in Yellowstone National Park, Wyoming. Journal of Vegetation Science 5, 731–742.
Turner MG, Romme WH, Gardner RH , Hargrove WW (1997) Effects of fire size and pattern on early succession in Yellowstone National Park. Ecological Monographs 67, 411–433.
Whelan RJ (1995) ‘The ecology of fire.’ (Cambridge University Press: Cambridge, UK)
