Abstract
Fire is an ecological factor that has been present in the ecosystems of the Mediterranean region for thousands of years. Our study was undertaken to acquire knowledge of the effect of fire on the germination of Mediterranean species. We used high temperatures (up to 60°C) and smoke to determine the effect of these factors on the germination of species from the Mediterranean region. The species selected are characteristic of the central Mediterranean basin and are representative of both woody and herbaceous species: Rhamnus alaternus L., Cistus albidus L., Cistus monspeliensis L., Fumana ericoides (Cav.) Gand., Rosmarinus officinalis L., Melica ciliata L., Avena sterilis L., Bituminaria bituminosa (L.) C.H. Stirt., Anthyllis vulneraria L., Coronilla glauca L., Argyrolobium zanonii (Turra) P.W. Balland, Emerus major Mill., Genista scorpius (L.) D.C. and Spartium junceum L. The seeds were collected in Mediterranean shrubland (8) and woodland (6) ecosystems, around Montpellier, France (24°45′N and 3°50′E). Ten treatments were tested: a control, three smoke treatments and six heat treatments. The average germination level (germination percentage) and the average T50 rates (time taken to reach 50% of germination) were calculated. The smoke and heat act in a different way on each of the species. The smoke enhanced the germination of two species, whilst moderate heat increased germination in all of the species excepting R. officinalis, F. ericoides, A. sterilis, A. vulneraria, and G. scorpius. Germination was fastest in M. ciliata and S. junceum and slowest in A. sterilis, E. major and C. albidus. The cues did not significantly affect the rate of germination. Fire modified the germination response of 12 of the 14 species studied.
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References
Ballini C (1992) Écophysiologie de la germination des graines d’Ulex parviflorus Pourr. Bull Ecol 23:119–130
Benjamini Y, Yekutieli D (2001) The control of false discovery rate under dependency. Ann Stat 29:1165–1188. doi:10.1214/aos/1013699998
Bradstock RA, Auld TD (1995) Soil temperatures during experimental bushfires in relation to fire intensity: consequences for legume germination and fire management in south-eastern Australia. J Appl Ecol 32:76–84. doi:10.2307/2404417
Brown NA (1993) Seed germination in the Fynbos fire ephemeral, Syncarpha vestita (L.) B. Nord. is promoted by smoke aqueous extracts of smoke and charred wood derived from burning the ericoid-leaved shrub, Passerina vulgaris Thoday. Int J Wildland Fire 3:203–206. doi:10.1071/WF9930203
Brown NAC, Botha PA (2004) Smoke seed germination studies and a guide to seed propagation of plants from the major families of the Cape Floristic Region, South Africa. S Afr J Bot 70:559–581
Brown NAC, Kotze G, Botha PA (1993) The promotion of seed germination of Cape Erica species by plant-derived smoke. Seed Sci Technol 21:573–580
Casal M, Prado S, Reyes O, Rivas M (2001) Efecto del fuego sobre la germinación de varias especies leguminosas arbustivas. In: III Congreso Forestal Español, Mesa, vol 4, pp 475–481, Granada
Crosti R, Ladd PG, Dixon KW, Piotto B (2006) Post-fire germination: the effect of smoke on seeds of selected species from the central Mediterranean basin. For Ecol Manag 221:306–312
De Bano LF, Dunn PH, Conrad CE (1977) Fire’s effect on physical and chemical properties of Chaparral soils. In: Proceedings of the symposium on the environmental consequences of fire and fuel management in Mediterranean ecosystems, pp 65–74
De Lange JH, Boucher C (1990) Autecological studies on Audouinia capitata (Bruniaceae). I. Plant-derived smoke as a seed germination cue. S Afr J Bot 56:700–702
Díaz-Fierros F, Benito E, Vega J, Castelao A, Soto B, Pérez R, Taboada T (1990) Solute loss and soil erosion in burnt soil from Galicia (NW Spain). In: Goldammer JG, Jenkins MJ (eds) Fire in ecosystems dynamics. SPB Academic Publishing, The Hague, pp 103–116
Dixon KX, Roche S, Pate JS (1995) The promotive effect of smoke derived from burnt native vegetation on seed germination of Western Australian plants. Oecologia 101:185–192. doi:10.1007/BF00317282
Ferrandis P, Martínez-Sánchez JJ, Herránz JM, De Las Heras J (1998) Effect of fire on the soil seed bank in a Mediterranean ecosystem in Central Spain. In: Trabaud L (ed) Fire management and landscape ecology. Association of Wildland Fire, Fairfield, pp 222–237
Gashaw M, Michelsen A (2002) Influence of heat shock on seed germination of plants from regularly burnt savanna woodlands and grasslands in Ethiopia. Plant Ecol 159:83–93. doi:10.1023/A:1015536900330
González-Rabanal F, Casal M (1995) Effect of high temperatures and ash on germination of ten species from gorse shrubland. Vegetatio 116:123–131. doi:10.1007/BF00045303
González-Rabanal F, Casal M, Trabaud L (1994) Effect of high temperatures, ash and seed position in the inflorescence on the germination of three Spanish grasses. J Veg Sci 5:289–294. doi:10.2307/3235851
Hanley E, Lamont B (2000) Heat pre-treatment and the germination of soil- and canopy-stored seeds of south-western Australian species. Acta Oecol 21:315–321. doi:10.1016/S1146-609X(00)01087-0
Herránz JM, Ferrandis P, Martínez-Sánchez JJ (1998) Influence of heat on seed germination of seven Mediterranean Leguminosae. Plant Ecol 136:95–103. doi:10.1023/A:1009702318641
Herránz JM, Ferrandis P, Martínez-Sánchez JJ (2000) Influence of heat on seed germination of nine woody Cistaceae species. Int J Wildland Fire 9:173–182. doi:10.1071/WF00014
Keeley JE (1987) Role of fire in seed germination of woody taxa in California chaparral. Ecology 68:434–443. doi:10.2307/1939275
Keeley JE (1994) Seed-germination patterns in fire-prone Mediterranean-climate regions. In: Arroyo MTK, Zedler PH, Fox MD (eds) Ecology and biogeography of Mediterranean ecosystems in Chile, California and Australia. Springer-Verlag, New York
Keeley JE, Fotheringham CJ (1997) Trace gas emissions and smoke-induced seed germination. Science 276:1248–1250. doi:10.1126/science.276.5316.1248
Keeley JE, Fotheringham CJ (1998) Mechanism of smoke-induced seed germination in a post-fire chaparral annual. J Ecol 86:27–36. doi:10.1046/j.1365-2745.1998.00230.x
Kenny BJ (2000) Influence of multiple fire-related germination cues on three Sydney Grevillea (Protaceae) species. Austral Ecol 5:664–669. doi:10.1046/j.1442-9993.2000.01066.x
Morris EC, Tieu A, Dixon K (2000) Seed coat dormancy in two species of Grevillea (Protaceae). Ann Bot (Lond) 86:771–775. doi:10.1006/anbo.2000.1249
Morrison DA, Morris Ch (2000) Pseudoreplication in experimental designs for the manipulation of seed germination treatments. Austral Ecol 25:292–296
Pérez-Fernández MA, Rodríguez-Echevarría S (2003) Effect of smoke, charred wood and nitrogenous compounds on seed germination of ten species from woodland in Central-Wester Spain. J Chem Ecol 29:237–251. doi:10.1023/A:1021997118146
Quinn GP, Keough MJ (2002) Experimental design and data analysis for biologists. Cambridge University Press, Cambridge
Read TR, Bellairs SM (1999) Smoke affects the germination of native grasses of New South Wales. Aust J Bot 47:563–576. doi:10.1071/BT97124
Read TR, Bellairs SM, Mulligan DR, Lamb D (2000) Smoke and heat effects on soil seed bank germination for the re-establishment of native forest community in New South Wales. Austral Ecol 25:48–57
Reyes O, Boedo M (2001) El fuego como controlador de la germinación de Cytisus striatus y de C. multiflorus y su aplicación agronómica. In: III Congreso Forestal Español, Mesa, vol 6, pp 15–21, Granada
Reyes O, Casal M (1995) Germination behaviour of 3 species of the genus Pinus in relation to high temperatures suffered during forest fires. Ann For Sci 52:385–392. doi:10.1051/forest:19950408
Reyes O, Casal M, Trabaud L (1997) The influence of population, fire and time of dissemination on the germination of Betula pendula seeds. Plant Ecol 133:201–208. doi:10.1023/A:1009751513547
Salvador R, Lloret F (1995) Germinación en el laboratorio de varias especies arbustivas mediterráneas: efecto de la temperatura. Orsis 10:25–34
Tárrega R, Calvo L, Trabaud L (1992) Effect of high temperatures on seed germination of two woody Leguminosae. Vegetatio 102:139–147. doi:10.1007/BF00044730
Thanos CA, Georghiou K, Kadis K, Pantazi C (1992) Cistaceae: a plant family with hard seeds. Isr J Bot 41:251–263
Thomas PB, Morris EC, Auld TD (2003) Interactive effects of heat shock and smoke on germination of nine species forming soil seed banks within the Sydney region. Austral Ecol 28:674–683. doi:10.1046/j.1442-9993.2003.1330.doc.x
Tierney DA (2006) The effect of fire-related germination cues on the germination of a declining forest understory species. Aust J Bot 54(3):297–303. doi:10.1071/BT05111
Trabaud L (1979) Etude du comportement du feu dans la garrigue de Chêne kermès à partir des températures et des vitesses de propagation. Ann For Sci 36:13–38
Trabaud L, Casal M (1989) Résponses des semences de Rosmarinus officinalis à différents traitemenets simulant une action de feu. Acta Oecol 10:355–363
Trabaud L, Oustric J (1989) Heat requirements for seed germination of three Cistus species in the garrigue of Southern France. Flora 183:321–325
Turner SR, Merritt DJ, Baskin CC, Dixon KW, Baskin JM (2005) Physical dormancy in seeds of six genera of Australian Rhamnaceae. Seed Sci Res 14:51–58. doi:10.1079/SSR2004197
Valbuena L, Tárrega R, Luis E (1992) Influence of heat on seed germination of Cistus laurifolius, and Cistus ladanifer. Int J Wildland Fire 2:15–20. doi:10.1071/WF9920015
Vallete JC, Gomedy V, Maeréchal J, Houssard C, Gillon D (1994) Heat transfer in the soil during very low-intensity experimental fires: the role of duff and soil moisture content. Int J Wildland Fire 4:225–237. doi:10.1071/WF9940225
Van Der Venter HA, Esterhuizen AD (1988) The effects of factors associated with fire on seed germination of Erica sessiflora and E. hebecalyx (Ericaceae). S Afr J Bot 54:301–304
Vega JA, Cuiñas P, Fontúrbel MT, Peréz-Gorostiaga P, Fernández C (2000) Desarrollo de los nuevos modelos de predicción. In: Vélez R (ed) La defensa contra incendios forestales, fundamentos y experiencias. McGraw Hill, Madrid
Ward SC, Koch JM, Grant CD (1997) Ecological aspects of soil seed-banks in relation to bauxite mining: I. Unmined jarrah forest. Aust J Ecol 22:169–176. doi:10.1111/j.1442-9993.1997.tb00656.x
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The authors would like to thank Dr. Mercedes Casal for the advice given on the design of the experiments and Dr. Margarita Basanta for the suggestions made during the writing of this paper.
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Reyes, O., Trabaud, L. Germination behaviour of 14 Mediterranean species in relation to fire factors: smoke and heat. Plant Ecol 202, 113–121 (2009). https://doi.org/10.1007/s11258-008-9532-9
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DOI: https://doi.org/10.1007/s11258-008-9532-9