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Bud traits and post-fire responses of Cerrado woody species, Southeastern Brazil

Citation

Chiminazzo, Marco Antonio; Bertolosi Bombo, Aline; Charles-Dominique, Tristan; Fidelis, Alessandra (2021), Bud traits and post-fire responses of Cerrado woody species, Southeastern Brazil, Dryad, Dataset, https://doi.org/10.5061/dryad.x0k6djhk5

Abstract

1) Species growing in fire-prone savannas usually persist by resprouting from their buds. In this study, we evaluated how various persistence traits allow bud protection for improved survival in fire-prone ecosystems.

2) Using an integrative morphological and macroanatomical approach, we analyzed how woody plants protect their buds. We tested bud protection at the community level and evaluated: a) how bud protection changes along a fire frequency gradient, b) if it differs between shrubs and trees and c) whether the level of bud protection is related to post-fire responses of 28 woody savanna species.

3) A mix of traits involving bud protection may enable woody species persistence in fire-prone ecosystems. Savanna species better protected their buds than forest species by developing bark and trichomes that allowed resprouting after fire. Regarding growth forms, shrub species capable of resprouting aboveground had their buds better protected than trees.

4) Bud protection is not only linked with their position to the bark, but also with the presence of trichomes. Profuse trichomes covering buds were related to savanna species. Some species with no bud protection by bark but with trichomes covering their buds were able to resprout after fire. The presence of accessory buds is also a trait more related to savannas, possibly influencing the resprouting after fire as they are better protected and increase the bud bank. Finally, different persistence traits interact with one another to better protect the buds, requiring a detailed screening of the traits to assess species responses to fire.

5) Synthesis. During fire, species have their aerial biomass consumed by the flames. To be able to resprout new branches and persist in the environment, they must have well-protected buds. In this study, we evaluated different ways that woody species protect their buds and related them with their resprouting strategy after fire. We investigated the protection by the bark, presence of trichomes and accessory buds. By studying the woody community in a gradient of savannas and forests we found that buds can be protected by bark, trichomes, or soil. Species can present a mix of these traits and strategies, which enhances their resprouting after fire.

Usage Notes

This dataset comprises data used in the "Your best buds are worth proctecting: variation in bud protection in a fire-prone cerrado system" published manuscript in Functional Ecology.

Information about the dataset can be found on the 'readme.txt' file and on the 'Metadata' sheet.

Funding

Fundação de Amparo à Pesquisa do Estado de São Paulo, Award: 2018/21300-6

Conselho Nacional de Desenvolvimento Científico e Tecnológico, Award: 134582/2018-7

Fundação de Amparo à Pesquisa do Estado de São Paulo, Award: 2017/02934-1

Fundação de Amparo à Pesquisa do Estado de São Paulo, Award: 2015/06743-0

Conselho Nacional de Desenvolvimento Científico e Tecnológico, Award: 303988/2018-5

Conselho Nacional de Desenvolvimento Científico e Tecnológico, Award: 406505/2018-7