Regeneração e estrutura populacional de jatobá-da-mata (Hymenaea courbaril L.), em dois fragmentos com diferentes graus de perturbação antrópica

Oliveira, Washington; Medeiros, Marcelo Brilhante de; Moser, Pamela; Pinheiro, Renato Torres; Olsen, Leandro Borges

doi:10.1590/s0102-33062011000400014

Cited by 12 publications

(9 citation statements)

References 20 publications

(22 reference statements)

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“…Souza et al (2010) studied the behavior of H. courbaril planted under full sun and in secondary forest enrichment strips and found higher growth of this species under full sun, although it is considered late secondary (Carvalho, 2003). On the other hand, Oliveira et al (2011) claim that H. courbaril can regenerate and recruit in shaded environments, but growth is limited by low light conditions. These results, together with those obtained in the present study, discard the shading of 92% for the species.…”

Section: Growth and Quality Of Tree Seedlingsmentioning

confidence: 99%

Water use in the growth of atlantic forest tree species seedlings under different shading levels

et al. 2021

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The increase in the demand for seedlings of native tree species makes it important to determine their water and light requirements, which are important factors in their production, in terms of costs and time. Water use and productivity in the growth of seedlings of Dalbergia nigra (Vell.) Allemão ex Benth., Apuleia leiocarpa (Vogel) J.F. Macbr and Hymenaea courbaril L. were determined under four light levels (three shading levels and control), using a randomized block design with four replicates. Height, stem diameter, leaf area and biomass, as well as Dickson quality index (DQI) were evaluated. The seedlings were transplanted into 280-cm3 plugs, filled with substrate composed of pure biosolids, and irrigated by a drip system with automatic management. The highest total volumes applied were 3.1 L per D. nigra seedling (in 37 and 58% shading), 2.5 L per A. leiocarpa seedling (in 37% shading) and 3.8 L per H. courbaril seedling (in full sun). Growth indices, confirmed by the DQI, indicate that shading levels of 37 and 58% for D. nigra, 37% for A. leiocarpa, and full sun for H. courbaril are the most recommended. The highest volumes of irrigation promoted the greatest development of the species, in general for intermediate shading, which provided the highest values of DQI and irrigation water productivity.

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Section: Growth and Quality Of Tree Seedlingsmentioning

confidence: 99%

Water use in the growth of atlantic forest tree species seedlings under different shading levels

et al. 2021

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“…Young individuals also have good development in disturbed environments and in environments with high light incidence. This maximizes their use in conservation tactics and forest restoration projects (Oliveira et al 2011).…”

Section: Discussionmentioning

confidence: 99%

Natural regeneration in a restored bauxite mine in southeast Brazil

Neto¹,

Martins²,

Silva³

et al. 2014

Bosque (Valdivia)

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SUMMARYThe objective of the present study was to verify if, in floristic terms of natural regeneration, a restored bauxite mine in southeast Brazil can be considered successfully restored. Forty plots of 3.0 x 3.0 m were allocated in the area. All shrubs and trees with height ≥ 0.30 m and diameter at 1.30 m height (DBH) ≤ 5.0 cm were identified and classified into successional categories and dispersal syndromes; DSL (diameter at soil level) and height were measured. We use the canonical correspondence analysis (CCA) to verify the correlations between environmental variables (canopy openness, litter decomposition, soil penetration resistance) and vegetation. We found 705 individuals, 80 species and 30 families. The families with the highest species richness were Fabaceae and Melastomataceae. The specie with the highest importance value (IV) was Myrcia splendens. Most species are the early secondary successional category and the zoochoric dispersion syndrome. CCA ordination indicates the formation of a group of species associated with less soil compaction and with low litter decomposition rate and the formation of another group associated with intermediate values of soil penetration resistance and litter decomposition rate. The results obtained after ten years of implementation of the restoration project, in floristic terms, are suitable. In other words, the area can be considered as successfully restored.Key words: bauxite, canonical correspondence analysis, floristic, forest restoration. RESUMENEl objetivo del presente estudio fue verificar si, en términos florísticos de la regeneración natural, una mina de bauxita restaurada en el sureste de Brasil puede considerarse restaurada con éxito. En el área, se distribuyeron 40 parcelas de 3,0 x 3,0 m, donde todos los arbustos y los árboles con altura ≥ 0,30 m y diámetro a 1,30 m de altura (DAP) ≤ 5,0 cm fueron identificados, medido el diámetro a nivel del suelo y la altura, y clasificados en categoría sucesional y dispersión de semillas. Se aplicó análisis de correspondencia canónica (CCA) para verificar las correlaciones entre variables ambientales y vegetación. Se encontraron 705 individuos, 80 especies y 30 familias. Las familias con mayor riqueza de especies fueron Fabaceae y Melastomataceae, y la especie con el mayor valor de importancia fue Myrcia splendens. La mayoría de las especies fueron de la categoría de sucesión secundaria inicial y con dispersión de semillas por zoocoría. Las variables ambientales mostraron los valores: constante de descomposición de la hojarasca (k) (0,0033 ± 0,0017); apertura del dosel (8,1 ± 6,5 %); resistencia a la penetración (9,3 ± 4,6 MPa). La ordenación CCA indicó la formación de un grupo de especies asociadas con menos compactación del suelo y con una baja tasa de descomposición de la hojarasca, y la formación de otro grupo asociado con valores intermedios de resistencia a la penetración y la descomposición de la hojarasca. Los resultados obtenidos después de 10 años de ejecución del proyecto de restauración, en términos floríst...

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“…Leaf pocket resin Martin et al, (1972) Chemical compounds Leaves Busato et al, (2001) Chemical compounds Seed oil Dias et al, (2013) Chemical compounds Seeds Arruda et al, (2015) The increasing demand for forest recovery projects and preservation of biodiversity due to deforestation, indiscriminate fires and illegal logging has boosted research on the production of seedlings of native forest species. The species H. courbaril occurs in low population densities with less than one tree per hectare (SILVA et al, 2014), but presents a wide distribution, indicating a probable tolerance and adaptation to the varied range of environments (OLIVEIRA, et al, 2011). The propagation of H. courbaril occurs mainly through seeds (CARVALHO, 2007), and there are few studies concerning vegetative propagation.…”

Section: Chemical Compoundsmentioning

confidence: 99%

Indolbutiric acid responses on rooting and survival of Hymenaea courbaril L. cuttings

Pereira

Moreira

Machado³

et al. 2017

Revista Brasileira De Tecnologia Aplicada Nas Ciências Agrárias

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Currently, the environmental appeal to promote reforestation programs, recovery of degraded areas and preservation of biodiversity pressures the production sector of native forest essences' seedlings. Jatoba, Hymenaea courbaril L., is a native tree which provides many products of great economic relevance. Vegetative propagation is an alternative method for seedlings production, which presents many benefits, including the possibility of establishing high productivity clonal hedges, as it occurs with the Eucalyptus genus. The experiment was conducted in a greenhouse, with partial temperature and humidity control. The study assessed the effects of different dosages of indolbutiric acid (IBA) hormone in the process of rooting jatoba cuttings. The cuttings were prepared in a laboratory and submitted to different dosages of IBA (0, 200, 400, 600, 800 e 1000 mg L-1), later established in sand substrate and placed in protected environment with intermittent fogging system and shading of 50%. Statistical analysis was carried out using R software, according to experimental design in randomized blocks, with six treatments and four replications. The results obtained by binomial evaluation showed there was no significant difference between IBA dosages, so the use of IBA on rooting H. courbaril cuttings was ineffective. However, success in the vegetative propagation of jatoba can occur through the selection of individuals that present good results to adventitious rooting. The use of IBA on adventitious rooting varies from one species to another, and due to the lack of studies on the subject concerning Hymenaea courbaril L., more experiments to be carried out in order to evaluate the rhizogenic potential should be done.

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Regeneração e estrutura populacional de jatobá-da-mata (Hymenaea courbaril L.), em dois fragmentos com diferentes graus de perturbação antrópica

Cited by 12 publications

References 20 publications

Water use in the growth of atlantic forest tree species seedlings under different shading levels

Water use in the growth of atlantic forest tree species seedlings under different shading levels

Natural regeneration in a restored bauxite mine in southeast Brazil

Indolbutiric acid responses on rooting and survival of Hymenaea courbaril L. cuttings

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