COMPORTAMENTO FENOLÓGICO DE Schizolobium parahyba var. amazonicum (PARICÁ) EM UM GRADIENTE TOPOGRÁFICO DE FLORESTA OMBRÓFILA DENSA NO SUDESTE DO ESTADO DO PARÁ
COMPORTAMENTO FENOLÓGICO DE Schizolobium parahyba var. amazonicum (PARICÁ) EM UM GRADIENTE TOPOGRÁFICO DE FLORESTA OMBRÓFILA DENSA NO SUDESTE DO ESTADO DO PARÁ
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DOI: https://doi.org/10.22533/at.ed.4542405032
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Palavras-chave: Fenologia, topografia, sincronia, intensidade.
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Keywords: Phenology, topography, synchrony, intensity.
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Abstract: Paricá is a native species of silvicultural interest that stands out for its low nutritional requirements and accelerated growth, and which is of great importance in the wood, paper and cellulose industry. The objective of this work was to characterize the reproductive and vegetative phenology of Paricá in a topographic gradient that varies from 230 to 450 meters in altitude, located in a fragment of dense rainforest in the southeast of the state of Pará. We selected 41 individuals of the species that presented DBH≥ 10 cm and good phytosanitary conditions and canopy visibility. Individuals were monitored for 12 months. For the general phenological characterization of the species, intensity and synchrony indices were estimated considering all 41 individuals. To verify whether there was an influence of topography in relation to the phenodynamics of the population, these indices were estimated separately. The results demonstrated greater reproductive activity of paricá from June/22 to October/22, with high synchrony and intensity for the phenophases of flowering (flower buds), fruiting (new and mature fruits) and dispersal. We did not observe major phenological variations in the different topographic positions analyzed, however it was verified that the leaf fall phenophase occurred constantly in trees above 300 m in altitude during practically the entire evaluation period. Paricá, therefore, presents seasonal phenological activity, making it possible to observe the occurrence of all vegetative and reproductive phenophases over a period of 12 months. The period with the greatest intensity of fruiting and seed dispersion was observed in the driest months of the year, which suggests that seasonal climatic variations influence the phenological dynamics of Paricá more strongly than topography. These results can contribute to the forestry development of the species in the region, in addition to subsidizing extractive activities, such as collecting seeds for the production of seedlings in local forest nurseries.
- Pamella Leandra Silva Lima
- Deirilane Galvão de Moraes
- Lígia Haira Duarte de Almeida
- Thaís Gonzaga de Souza
- Sintia Valerio Kohler
- Clenes Cunha Lima
- Alex Josélio Pires Coelho
- Nayara Mesquita Mota
- Fernando da Costa Brito Lacerda