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How does fire affect germination of grasses in the Cerrado?

Published online by Cambridge University Press:  30 April 2020

Mariana Dairel Open the ORCID record for Mariana Dairel [Opens in a new window]  and
Alessandra Fidelis Open the ORCID record for Alessandra Fidelis [Opens in a new window]
Mariana Dairel*
Affiliation:
Lab of Vegetation Ecology, Universidade Estadual Paulista (UNESP), Instituto de Biociências, Avenida 24-A, 1515, Rio Claro13506-900, Brazil
Alessandra Fidelis
Affiliation:
Lab of Vegetation Ecology, Universidade Estadual Paulista (UNESP), Instituto de Biociências, Avenida 24-A, 1515, Rio Claro13506-900, Brazil
*
Correspondence: Mariana Dairel, E-mail: [email protected]
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Abstract

Fire is a frequent disturbance in the Cerrado and is one of the major factors affecting vegetation structure and diversity. Fire events open gaps within the herbaceous layer and increase temperature fluctuation in the soil surface. In addition to being an important environmental filter for germination, fire is a germination cue for species with physiological dormancy. This study aimed to evaluate the germination of native grasses, using daily temperature fluctuations and heat shock to overcome physiological dormancy in native grasses. We also evaluated seed longevity after dispersal for some species. We conducted the daily temperature fluctuation experiments on seeds of ten native grass species, which were collected and then placed in germination chambers simulating thermal fluctuation throughout the day (19–55°C). We also subjected seeds to different heat-shock treatments: 100°C for 1 min, 100°C for 3 min and 200°C for 1 min. To determine seed longevity, we stored seeds for 6 and 12 months after collection and then set them to germinate (27°C, 12/12 h light). Non-germinated seeds from all experiments were tested for viability. Most species had low longevity and germination percentages. Those that had physiological dormancy were stimulated to germinate when exposed to temperature fluctuations. One species resisted temperatures up to 200°C. For all other species, neither treatment affected germination percentages. Our results indicate the importance of these environmental filters for seedling recruitment of these species, considering the low longevity and the presence of physiological dormancy.

Keywords

heat shocknative grassphysiological dormancyseed germinationtemperature fluctuationtropical savannas
Type
Research Paper
Information
Seed Science Research , Volume 30 , Special Issue 4: Functional Seed Ecology , December 2020 , pp. 275 - 283
Copyright
Copyright © Cambridge University Press 2020

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References

Aires, SS, Sato, MN and Miranda, HS (2014) Seed characterization and direct sowing of native grass species as a management tool. Grass and Forage Science 69, 470–478.CrossRefGoogle Scholar
Baskin, JM and Baskin, CC (2004) A classification system for seed dormancy. Seed Science Research 14, 1–16.CrossRefGoogle Scholar
Baskin, CC and Baskin, JM (2014) Seeds: ecology, biogeography, and evolution of dormancy and germination. New York, Academic Press.Google Scholar
Bates, D, Mächler, M, Bolker, B and Walker, S (2015) Fitting linear mixed-effects models using lme4. Journal of Statistical Software 67, 1–48.CrossRefGoogle Scholar
Bond, WJ (2004) Fire. pp. 421–446 in Cowling, RM, Richardson, DM and Pierce, SM (Eds.), Vegetation of Southern Africa. Cambridge, Cambridge University Press.Google Scholar
Bond, WJ and Keeley, JE (2005) Fire as a global ‘herbivore’: The ecology and evolution of flammable ecosystems. Trends in Ecology & Evolution 20, 387–394.CrossRefGoogle ScholarPubMed
Bond, WJ and Van Wilgen, BW (1996) Fire and plants. London, UK, Chapman & Hall.CrossRefGoogle Scholar
Carmona, R, Martins, CR and Favero, AP (1998) Fatores que afetam a germinação de sementes de gramíneas nativas do Cerrado. Revista Brasileira de Sementes 20, 16–22.CrossRefGoogle Scholar
Cianciaruso, MV and Batalha, MA (2008) A year in a Cerrado wet grassland: a non-seasonal island in a seasonal savanna environment. Brazilian Journal of Biology 68, 495–501.CrossRefGoogle Scholar
Clarke, PJ, Lawes, MJ, Midgley, JJ, Lamont, BB, Ojeda, F, Burrows, GE, Enright, NJ and Knox, KJE (2013) Resprouting as a key functional trait: how buds, protection and resources drive persistence after fire. New Phytolologist 197, 19–35.CrossRefGoogle ScholarPubMed
Cole, I, Lunt, ID and Koen, T (2005) Effects of sowing treatment and landscape position on establishment of the perennial tussock grass Themeda triandra (Poaceae) in degraded eucalyptus woodlands in southeastern Australia. Restoration Ecology 13, 552–561.CrossRefGoogle Scholar
Commander, LE, Golos, PJ, Miller, BP and Merritt, DJ (2017) Seed germination traits of desert perennials. Plant Ecology 218, 1077–1091.CrossRefGoogle Scholar
Coutinho, LM (1982) Ecological effects of fire in Brazilian Cerrado. Berlin, Heidelberg, Springer.CrossRefGoogle Scholar
Daibes, LF, Zupo, T, Silveira, FAO and Fidelis, A (2017) A field perspective on effects of fire and temperature fluctuation on Cerrado legume seeds. Seed Science Research 27, 74–83.CrossRefGoogle Scholar
Daibes, LF, Gorgone-Barbosa, E, Silveira, FAO and Fidelis, A (2018) Gaps critical for the survival of exposed seeds during Cerrado fires. Australian Journal of Botany 66, 116–123.CrossRefGoogle Scholar
Dayrell, RLC, Garcia, QS, Negreiros, D, Baskin, CC, Baskin, JM and Silveira, FAO (2016) Phylogeny strongly drives seed dormancy and quality in a climatically buffered hotspot for plant endemism. Annals of Botany 119, 267–277.CrossRefGoogle Scholar
de Andrade, LAZ and Miranda, HS (2014) The dynamics of the soil seed bank after a fire event in a woody savanna in central Brazil. Plant Ecology 215, 1199–1209.CrossRefGoogle Scholar
Edwards, EJ (2012) The origins of C4 grasslands: integrating evolutionary and ecosystem science. Science 328, 587–591.CrossRefGoogle Scholar
Erickson, TE, Shackelford, N, Dixon, KW, Turner, SR and Merritt, DJ (2016) Overcoming physiological dormancy in seeds of Triodia (Poaceae) to improve restoration in the arid zone. Restoration Ecology 24, 64–76.CrossRefGoogle Scholar
Fichino, BS, Dombroski, JRG, Pivello, VR and Fidelis, A (2016) Does fire trigger seed germination in the Neotropical savannas? Experimental tests with six Cerrado species. Biotropica 48, 181–187.CrossRefGoogle Scholar
Fidelis, A and Blanco, C (2014) Does fire induce flowering in Brazilian subtropical grasslands? Applied Vegetation Science 17, 690–699.CrossRefGoogle Scholar
Fidelis, A, Blanco, CC, Müller, SC, Pillar, VD and Pfadenhauer, J (2012) Short-term changes caused by fire and mowing in Brazilian Campos grasslands with different long-term fire histories. Journal of Vegetation Science 23, 552–562.CrossRefGoogle Scholar
Foster, BL (2001) Constraints on colonization and species richness along a grassland productivity gradient: the role of propagule availability. Ecology Letters 4, 530–535.CrossRefGoogle Scholar
Foster, BL and Tilman, D (2003) Seed limitation and the regulation of community structure in oak savanna grassland. Journal of Ecology 91, 999–1007.CrossRefGoogle Scholar
Foster, BL, Murphy, CA, Keller, KR, Aschenbach, TA, Questad, EJ and Kindscher, K (2007) Restoration of prairie community structure and ecosystem function in an abandoned hayfield: a sowing experiment. Restoration Ecology 15, 652–661.CrossRefGoogle Scholar
Fundação Grupo Boticário (2011) Plano de Manejo da Reserva Natural Serra do Tombador. Supervisor: G.A. Gatti. Curitiba, Brazil. Available at: http://www.fundacaogrupoboticario.org.br.Google Scholar
Grubb, PJ (1977) The maintenance of species-richness in plant communities: the importance of the regeneration niche. Biological Reviews 52, 07–145.CrossRefGoogle Scholar
Hothorn, T, Bretz, F and Westfall, P (2008) Simultaneous inference in general parametric models. Biometrical Journal 50, 346–363.CrossRefGoogle ScholarPubMed
Keeley, JE, Pausas, JG, Rundel, PW, Bond, WJ and Bradstock, RA (2011) Fire as an evolutionary pressure shaping plant traits. Trends in Plant Science 16, 406–411.CrossRefGoogle ScholarPubMed
Kolb, RM, Aparecida, N, Pilon, L and Durigan, G (2016) Factors influencing seed germination in Cerrado grasses. Acta Botanica Brasilica 30, 87–92.CrossRefGoogle Scholar
Lakon, G (1949) The topographical tetrazolium method for determining the germinating capacity of seeds. Plant Physiology 24, 389–394.CrossRefGoogle ScholarPubMed
Lamont, BB and He, T (2017) Fire-proneness as a prerequisite for the evolution of fire-adapted traits. Trends in Plant Science 22, 278–288.CrossRefGoogle ScholarPubMed
Martin, AC (1946) The comparative internal morphology of seeds. American Midland Naturalist 36, 513–660.CrossRefGoogle Scholar
Miranda, AC, Miranda, HS, Dias, IDFO and de Souza Dias, BF (1993) Soil and air temperatures during prescribed Cerrado fires in Central Brazil. Journal of Tropical Ecology 9, 313–320.CrossRefGoogle Scholar
Moraes, MG, Chatterton, NJ, Harrison, PA, Filgueiras, TS and Figueiredo-Ribeiro, RCL (2013) Diversity of non-structural carbohydrates in grasses (Poaceae) from Brazil. Grass and Forage Science 68, 165–177.CrossRefGoogle Scholar
Moreira, B, Tormo, J, Estrelles, E and Pausas, JG (2010) Disentangling the role of heat and smoke as germination cues in Mediterranean Basin flora. Annals of Botany 105, 627–635.CrossRefGoogle ScholarPubMed
Munhoz, C and Felfili, J (2007) Reproductive phenology of an herbaceous-subshrub layer of a Savannah (Campo Sujo) in the Cerrado Biosphere Reserve I, Brazil. Brazilian Journal of Biology 67, 299–307.CrossRefGoogle ScholarPubMed
Musso, C, Miranda, HS, Aires, SS, Bastos, AC, Soares, AMVM and Loureiro, S (2014) Simulated post-fire temperature affects germination of native and invasive grasses in Cerrado (Brazilian savanna). Plant Ecology & Diversity 8, 37–41.Google Scholar
Oksanen, J, Blanchet, FG, Friendly, M, Kindt, R, Legendre, P, Mcglinn, D, Minchin, PR, O'hara, RB, Simpson, GL, Solymos, P, Henry, M, Stevens, H, Szoecs, E and Maintainer, HW (2019) The “vegan” package: Community Ecology Package. Available at: https://github.com/vegandevs/vegan.Google Scholar
Ooi, M, Auld, T and Whelan, R (2004) Comparison of the cut and tetrazolium tests for assessing seed viability: a study using Australian native Leucopogon species. Ecological Management & Restoration 5, 141–143.CrossRefGoogle Scholar
Osborne, CP (2008) Atmosphere, ecology and evolution: what drove the Miocene expansion of C4 grasslands? Journal of Ecology 96, 35–45.Google Scholar
Paula, S and Pausas, JG (2008) Burning seeds: germinative response to heat treatments in relation to resprouting ability. Journal of Ecology 96, 543–552.CrossRefGoogle Scholar
Pausas, JG, Lamont, BB, Paula, S, Appezzato-da-Glória, B and Fidelis, A (2018) Unearthing belowground bud banks in fire-prone ecosystems. New Phytologist 217, 1435–1448.CrossRefGoogle ScholarPubMed
Pivello, VR (2011) The use of fire in the Cerrado and Amazonian rainforests of Brazil: past and present. Fire Ecology 7, 24–39.CrossRefGoogle Scholar
R Development Core Team (2016) R: a language and environ- ment for statistical computing. R Foundation for Statistical Computing, Vienna. ISBN 3-900051-07-0. http://www.R-project.org.Google Scholar
Ramos, DM, Diniz, P and Valls, JFM (2014) Habitat filtering and interspecific competition influence phenological diversity in an assemblage of Neotropical savanna grasses. Brazilian Journal of Botany 37, 29–36.CrossRefGoogle Scholar
Ramos, DA, Liaffa, ABS, Diniz, P, Munhoz, CBR, Ooi, MKJ, Borghetti, F and Valls, JFM (2016) Seed tolerance to heating is better predicted by seed dormancy than by habitat type in Neotropical savanna grasses. International Journal of Wildlife Fire 25, 1273–1280.CrossRefGoogle Scholar
Ramos, DM, Diniz, P, Ooi, MKJ, Borghetti, F and Valls, JFM (2017) Avoiding the dry season: dispersal time and syndrome mediate seed dormancy in grasses in Neotropical savanna and wet grasslands. Journal of Vegetation Science 28, 798–807.CrossRefGoogle Scholar
Ramos-Neto, MB and Pivello, VR (2000) Lightning fires in a Brazilian Savanna National Park: rethinking management strategies. Environmental Management 26, 675–684.CrossRefGoogle Scholar
Rissi, MN, Baeza, MJ, Gorgone-Barbosa, E, Zupo, T and Fidelis, A (2017) Does season affect fire behaviour in the Cerrado? International Journal of Wildlife Fire 26, 427–433.CrossRefGoogle Scholar
Santana, VM, Baeza, MJ and Blanes, MC (2013) Clarifying the role of fire heat and daily temperature fluctuations as germination cues for Mediterranean Basin obligate seeders. Annals of Botany 111, 127–134.CrossRefGoogle ScholarPubMed
Sarkar, D (2008) Lattice: Multivariate Data Visualization with R. Springer. ISBN: 978-0- 387-75968-5 http://lmdvr.r-forge.r-project.org/.CrossRefGoogle Scholar
Sarmiento, G (1992) Adaptive strategies of perennial grasses in South American savannas. Journal of Vegetation Science 3, 325–336.CrossRefGoogle Scholar
Schmidt, IB, Fidelis, A, Miranda, HS and Ticktin, T (2017) How do the wets burn? Fire behavior and intensity in wet grasslands in the Brazilian savanna. Brazilian Journal of Botany 40, 167–175.CrossRefGoogle Scholar
Simpson, KJ, Ripley, BS, Christin, P-A, Belcher, CM, Lehmann, CER, Thomas, GH and Osborne, CP (2016) Determinants of flammability in savanna grass species. Journal of Ecology 104, 138–148.CrossRefGoogle ScholarPubMed
Stradic, SLE, Silveira, FAO, Buisson, E, Cazelles, K, Carvalho, V, Fernandes, GW and Ird, C (2015) Diversity of germination strategies and seed dormancy in herbaceous species of campo rupestre grasslands. Australian Ecology 40, 537–546.CrossRefGoogle Scholar
Thompson, K and Grime, JP (1979) Seasonal variation in the seed banks of herbaceous species in ten contrasting habitats. Journal of Ecology 67, 893–921.CrossRefGoogle Scholar
Trollope, WSW (1982) Ecological effects of fire in South African savannas. Berlin, Heidelberg, Springer-Verlag.CrossRefGoogle Scholar
Veldman, JW, Overbeck, GE, Negreiros, D, Mahy, G, Le Stradic, S, Fernandes, GW, Durigan, G, Buisson, E, Putz, FE and Bond, WJ (2015) Where tree planting and forest expansion are bad for biodiversity and ecosystem services. Bioscience 65, 1011–1018.CrossRefGoogle Scholar
Wehmeyer, N, Hernandez, LD, Finkelstein, RR and Vierling, E (1996) Synthesis of small heat-shock proteins is part of the developmental program of late seed maturation. Plant Physiology 112, 747–757.CrossRefGoogle ScholarPubMed
Whelan, RJ (1995) The ecology of fire. Cambridge, Cambridge University Press.Google Scholar
Wickham, H (2009) ggplot2: Elegant Graphics for Data Analysis. Springer-Verlag New York. ISBN 978-3-319-24277-4. Available at: https://ggplot2.tidyverse.org.CrossRefGoogle Scholar
Wright, B, Zuur, A and Chan, G (2014) Proximate causes and possible adaptive functions of mast seeding and barren flower shows in arid spinifex grasses (Triodia spp.) in arid regions of Australia. Rangeland Journal 36, 297–308.CrossRefGoogle Scholar
Zanchetta, D, Delgado, JM, Silva, CEF, Reis, CM, Silva Da Luca, EF, Fernandes, FS, Dutra-Lutgens, H, Tannus, JLS, Pinheiro, LS, Martins, MR and Sawaya, R (2006) Plano de manejo inte- grado-Estações Ecológica e Experimental de Itirapina- SP. 1a Revisão. Instituto Florestal.Google Scholar
Zirondi, HL, Silveira, FAO and Fidelis, A (2019) Fire effects on seed germination: heat shock and smoke on permeable vs impermeable seed coats. Flora – Morphology Distribution Functional Ecology of Plants 253, 98–106.CrossRefGoogle Scholar
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