A Structure Shaped by Fire, but Also Water: Ecological Consequences of the Variability in Bark Properties Across 31 Species From the Brazilian Cerrado
| Autor: | Jeroni Galmés, Hervé Cochard, Maria Clara Pereira de Andrade, Alan Carlos Costa, Paulo E. Menezes-Silva, Sabrina Emanuella da Silva Almeida, Leticia Ferreira de Sousa, Augusto C. Franco, Lucas Loram-Lourenço, Fernanda S. Farnese, Fabiano Guimarães Silva, Luciana Minervina de Freitas Moura, Rauander Douglas Ferreira Barros Alves |
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| Přispěvatelé: | Departamento de Biologia (CESAM), Universidade de Aveiro, Department of Biology, University of Memphis, Laboratoire de Physique et Physiologie Intégratives de l’Arbre en environnement Fluctuant - Clermont Auvergne (PIAF), Institut National de la Recherche Agronomique (INRA)-Université Clermont Auvergne (UCA), Departamento de Botanica, Universidade de Brasília (UnB), Laboratoire de Physique et Physiologie Intégratives de l’Arbre en environnement Fluctuant (PIAF), Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
stockage d'eau résistance au feu Introduced species Plant Science drought lcsh:Plant culture fire resistance xylem 010603 evolutionary biology 01 natural sciences complex mixtures Tropical savanna climate cerrado Hydraulic conductivity traits [SDV.BV]Life Sciences [q-bio]/Vegetal Biology lcsh:SB1-1110 stem Original Research Vegetal Biology bark ecophysiology water storage and transport plant functional traits hydraulic conductivity tropical dry wood density life-history thickness photosynthesis Plant Sciences Resistance (ecology) Ecology Water storage Xylem 15. Life on land visual_art plante visual_art.visual_art_medium water storage and transport Environmental science Bark écophysiologie forestière Biologie végétale Water use 010606 plant biology & botany |
| Zdroj: | Frontiers in Plant Science Frontiers in Plant Science, Frontiers, 2020, 10, pp.17. ⟨10.3389/fpls.2019.01718⟩ Frontiers in Plant Science, Vol 10 (2020) Frontiers in Plant Science (10), 17. (2020) Frontiers in Plant Science, 2020, 10, pp.17. ⟨10.3389/fpls.2019.01718⟩ |
| ISSN: | 1664-462X |
| DOI: | 10.3389/fpls.2019.01718⟩ |
| Popis: | Bark is a structure involved in multiple physiological functions, but which has been traditionally associated with protection against fire. Thus, little is known about how the morpho-anatomical variations of this structure are related to different ecological pressures, especially in tropical savanna species, which are commonly subjected to frequent fire and drought events. Here we evaluated how the structural and functional variations of bark are related to the processes of resilience and resistance to fire, as well as transport and storage of water in 31 native species from the Brazilian Cerrado. Because of their thick bark, none of the trees analyzed were top-killed after a severe fire event. The structural and functional variations of the bark were also associated with water storage and transport, functions related to properties of the inner bark. In fact, species with a thicker and less dense inner bark were the ones that had the highest water contents in the wood, bark, and leaves. Lower bark density was also related to higher stem hydraulic conductivity, carbon assimilation, and growth. Overall, we provide strong evidence that in addition to protection from fire, the relative investment in bark also reflects different strategies of water use and conservation among many Cerrado tree species. |
| Databáze: | OpenAIRE |
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