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<p>Understanding plant phenology and resource-use is essential to relate growth patterns to climate and environmental factors in forest ecosystems. Here we examine the bud anatomy and leaf and branch growth for six woody species from a seasonal tropical forest in Brazil. We related these traits to the resource-use strategy of each species. Apical buds from each species were collected during the dry season; in the same period, another set of apical buds was monitored weekly for leaf and branch development. The buds of the evergreen <i>Myrcia</i> cfr. <i>splendens</i>, the semi-deciduous <i>Xylopia aromatica</i>, and the deciduous <i>Eugenia bimarginata</i> and <i>Senegalia lowei</i> included preformed leaves. <i>Miconia albicans</i> (evergreen) and <i>Miconia</i> sp. (semi-deciduous) possessed buds without leaf preformation. Only the deciduous species, <i>E. bimarginata</i> and <i>S. lowei</i>, had scaly buds. The bud traits of species with distinct leaf persistence (i.e., non-deciduous) resembled each other. Deciduous plants appeared to adopt traits linked to a conservative resource-use strategy, such as scaly buds with preformed organs, whereas semi-deciduous and evergreen species presented traits linked to a more acquisitive strategy, such as naked and neoformed buds. The contrasting bud traits presented by deciduous and evergreen species are alternative responses to uncertain environmental conditions (e.g., seasonal drought), and may explain the high diversity of tree species in seasonal tropical forests in southeastern Brazil.</p>

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Ecological strategies of young trees with different leaf habitats: branch growth and bud composition in a seasonal tropical forest

  • 期刊论文

  • 发表日期：

    2026年1月21日

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  • Weslley Rodrigues Pereira,
  • Ana Luiza Viana Silva,
  • Larissa Gabrielle Ferreira da Silva,
  • Marina Efigênia Gonçalves,
  • Ana Maria Medeiros Oliveira,
  • Rike de Deus Silva,
  • Renata Aparecida Maia,
  • Nayara Magry Jesus Melo,
  • Javier Guido Puntieri,
  • João Paulo Souza

摘要

Understanding plant phenology and resource-use is essential to relate growth patterns to climate and environmental factors in forest ecosystems. Here we examine the bud anatomy and leaf and branch growth for six woody species from a seasonal tropical forest in Brazil. We related these traits to the resource-use strategy of each species. Apical buds from each species were collected during the dry season; in the same period, another set of apical buds was monitored weekly for leaf and branch development. The buds of the evergreen Myrcia cfr. splendens, the semi-deciduous Xylopia aromatica, and the deciduous Eugenia bimarginata and Senegalia lowei included preformed leaves. Miconia albicans (evergreen) and Miconia sp. (semi-deciduous) possessed buds without leaf preformation. Only the deciduous species, E. bimarginata and S. lowei, had scaly buds. The bud traits of species with distinct leaf persistence (i.e., non-deciduous) resembled each other. Deciduous plants appeared to adopt traits linked to a conservative resource-use strategy, such as scaly buds with preformed organs, whereas semi-deciduous and evergreen species presented traits linked to a more acquisitive strategy, such as naked and neoformed buds. The contrasting bud traits presented by deciduous and evergreen species are alternative responses to uncertain environmental conditions (e.g., seasonal drought), and may explain the high diversity of tree species in seasonal tropical forests in southeastern Brazil.