| Texto completo | |
| Autor(es): |
Pereira, Thales A. C.
;
Oliveira, Rafael S.
;
Romero, Gustavo Q.
Número total de Autores: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PLANT AND SOIL; v. N/A, p. 14-pg., 2025-10-06. |
| Resumo | |
Background and aimsAlthough facilitation is well established in ecological theory, facilitative interactions between plants in tropical rainforests remain underexplored. In coastal plain forests (Restinga forests), characterized by nutrient-poor acidic soils, overflow water from epiphytic tank bromeliads (ETBs) during rainfall elevates soil nutrient levels and pH. However, whether ETBs in the canopy facilitate seedling growth on the forest floor remains unknown. Here, we combined isotopic tracers with a fertilization experiment to investigate whether ETBs can enhance the nutrition and growth of a fast-growing species.MethodsIn a greenhouse, Jacaranda puberula (Bignoniaceae) seedlings were grown in Restinga forest soil and irrigated with either bromeliad tank water or rainwater. To trace nutrient transfer from bromeliads, we enriched their tank detritus with 15N. We then compared water nutrient concentrations, seedling performance, and leaf isotopic ratios between treatments.ResultsBromeliad water contained higher concentrations of nitrogen, phosphorus, calcium, magnesium, sulfur, iron, and aluminum than rainwater. Leaf nitrogen isotopic composition of seedlings irrigated with bromeliad water more than doubled, and their mature leaves had 35% more potassium, 36% more phosphorus, 3% more iron, and 24% less manganese. These seedlings also produced nearly twice as many leaves as those irrigated with rainwater.ConclusionWe provide experimental evidence that ETBs can facilitate the nutrition and growth of fast-growing terrestrial seedlings on dystrophic soils by creating nutrient-enriched soil patches. This discovery reveals a novel mechanism of facilitation between plants involving spatially distant individuals, and advances our understanding of the processes interconnecting canopy and soil compartments in tropical rainforests. (AU) | |
| Processo FAPESP: | 20/06778-7 - Bromélias-Tanque epífitas em florestas tropicais: desvendando seu papel para comunidades de plântulas e de bactérias no solo via isótopos estáveis e metagenômica |
| Beneficiário: | Tháles Augusto Coralli Pereira |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 19/08474-8 - Ecossistemas aquáticos continentais sob mudanças climáticas: impactos em múltiplos níveis de organização |
| Beneficiário: | Gustavo Quevedo Romero |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa de Pesquisa sobre Mudanças Climáticas Globais - Temático |
| Processo FAPESP: | 22/10765-3 - Impactos antrópicos e seus efeitos sobre a biodiversidade, estrutura trófica e fluxos entre ecossistemas aquáticos e terrestres |
| Beneficiário: | Gustavo Quevedo Romero |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa BIOTA - Regular |
| Processo FAPESP: | 23/01589-0 - Influência dos subsídios de origem aquática na resiliência das teias alimentares receptoras em florestas ripárias |
| Beneficiário: | Gustavo Quevedo Romero |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 22/13538-8 - Bromélias-tanque epífitas em florestas tropicais: revelando seu papel na estruturação de comunidades microbianas do solo usando uma abordagem de metabarcoding |
| Beneficiário: | Tháles Augusto Coralli Pereira |
| Modalidade de apoio: | Bolsas no Exterior - Estágio de Pesquisa - Doutorado |