Environmental and Plant Variables Influence Dalbergia nigra (Fabaceae) Phenology - Implications for Seed Production

Abstract Studies of plant phenology in the Atlantic Forest can be enhanced by a greater understanding of the factors regulating vegetative and reproductive cycles. Dalbergia nigra (Vell.) Allemão ex Benth. is endemic and vulnerable in the Atlantic Forest. We analyzed abiotic aspects and plant traits...

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Bibliographic Details
Published in:Floresta e ambiente 2022-01, Vol.29 (3)
Main Authors: Silva, Jailton de Jesus, Poelking, Everton Luís, Costa, Grênivel Mota da, Funch, Ligia Silveira, Duarte, Edson Ferreira
Format: Article
Language:English
Subjects:
Atlantic Forest
intrapopulation variation
jacaranda
PLANT SCIENCES
reforestation
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Summary:Abstract Studies of plant phenology in the Atlantic Forest can be enhanced by a greater understanding of the factors regulating vegetative and reproductive cycles. Dalbergia nigra (Vell.) Allemão ex Benth. is endemic and vulnerable in the Atlantic Forest. We analyzed abiotic aspects and plant traits that modulate the phenologies of D. nigra by monitoring 135 individuals in four subpopulations from different remnant forests for 24 months. The growth and shapes of the plants, as well as environmental variables, were determined. Circular analysis evidenced phenological variations among subpopulations and evaluation periods. Multiple factor analysis evidenced that phenological variations are mainly correlated with precipitation, temperature, and tree height. The combination of environmental conditions and plant characteristics affect synchronicity and phenological intensity. Low fruiting intensity (less than 50%) limits seed production and recruitment. We emphasize the importance of forest remnants and the need to increase D. nigra populations in future reforestation projects.
ISSN:1415-0980
2179-8087
2179-8087
DOI:10.1590/2179-8087-floram-2022-0002