Resource availability and disturbance frequency shape evolution of plant life forms in Neotropical habitats

Autor(es)

Prochazka, Luana S. ; Alcantara, Suzana ; Rando, Juliana Gastaldello ; Vasconcelos, Thais ; Pizzardo, Raquel C. ; Nogueira, Anselmo

• Tipo de documento: Artigo Científico
• Fonte: NEW PHYTOLOGIST; v. 242, n. 2, p. 14-pg., 2024-02-21.

Resumo

Organisms use diverse strategies to thrive in varying habitats. While life history theory partly explains these relationships, the combined impact of resource availability and disturbance frequency on life form strategy evolution has received limited attention. We use Chamaecrista species, a legume plant lineage with a high diversity of plant life forms in the Neotropics, and employ ecological niche modeling and comparative phylogenetic methods to examine the correlated evolution of plant life forms and environmental niches. Chamaephytes and phanerophytes have optima in environments characterized by moderate water and nutrient availability coupled with infrequent fire disturbances. By contrast, annual plants thrive in environments with scarce water and nutrients, alongside frequent fire disturbances. Similarly, geophyte species also show increased resistance to frequent fire disturbances, although they thrive in resource-rich environments. Our findings shed light on the evolution of plant strategies along environmental gradients, highlighting that annuals and geophytes respond differently to high incidences of fire disturbances, with one enduring it as seeds in a resource-limited habitat and the other relying on reserves and root resprouting systems in resource-abundant habitats. Furthermore, it deepens our understanding of how organisms evolve associated with their habitats, emphasizing a constraint posed by low-resource and high-disturbance environments. (AU)

• Processo FAPESP: 19/18627-6 - Combinando avaliação de risco e singularidade evolutiva na conservação de Chamaecrista ser. Coriaceae (Fabaceae) da Cadeia do Espinhaço
• Beneficiário: Raquel Cruz Pizzardo
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Iniciação Científica
• Processo FAPESP: 21/01573-0 - Macroevolução de múltiplos mutualismos no gênero Chamaecrista: sinergismos e conflitos em linhagens de Cerrado e de Campo Rupestre
• Beneficiário: Luana de Souza Prochazka
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
• Processo FAPESP: 19/19544-7 - Efeitos sinérgicos de múltiplos mutualistas nas plantas: como bactérias, formigas e abelhas contribuem para a evolução de um grupo de leguminosas
• Beneficiário: Anselmo Nogueira
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Jovens Pesquisadores
• Processo FAPESP: 18/02191-1 - Diversificação e conservação da Flora Montana da Cadeia do Espinhaço: construindo uma flora mega-diversa em um mosaico de histórias evolutivas
• Beneficiário: Thais Nogales da Costa Vasconcelos
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado