Key species selection for forest restoration after bauxite mining in the Eastern Amazon

Barbosa, Rodrigo de Souza; Pereira, Gizelia Ferreira Matos; Ribeiro, Sabrina Santos; Hage, André Luiz Ferreria; Costa, Gracialda Ferreira; Salomão, Rafael Paiva; Schwartz, Gustavo

doi:10.1016/j.ecoleng.2021.106190

Cited by 7 publications

(2 citation statements)

References 20 publications

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“…In this study, there were three significant components (Table 3). The significance of the components was considered based on the latent root criterion (Barbosa et al, 2021), according to which eigenvalues greater than one are considered significant in PCA. Factor loadings show the correlation between the variable and the component, indicating the quality of the representation.…”

Section: Resultsmentioning

confidence: 99%

Genetic diversity based on multivariate techniques in elephant grass genotypes for bioenergy

Vidal,

Daher,

Freitas

et al. 2024

Braz. J. Biol.

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The use of biomass for energy production constitutes a promising strategy that warrants the search for new sources of biomass. Elephant grass has been gaining notoriety due to its high dry matter yield and rapid growth. The present study was carried out to quantify the genetic divergence of nine elephant grass half-sib families in order to identify genotypes with greater genetic divergence and productive potential for hybridization, using the hierarchical clustering methodology based on principal components. Half-sib families were generated using genotypes from the Active Germplasm Bank of Elephant Grass. The experiment was laid out in a randomized-block design with nine half-sib families, three replicates, and eight plants per plot. A total of 216 genotypes of elephant grass were evaluated. Principal component (PC), biplot, and hierarchical clustering analyses for diversity estimation were conducted using R software. The first two PCs of biplot analysis accounted for 64% of the cumulative variation. Dry matter yield was the most important trait for genotype discrimination (0.89), followed by plant height (0.67) and stem diameter (0.61) in PC1. In this analysis, the distances between accessions were considered and there were no family links, which indicates the existence of wide variability within the evaluated families, since genotypes belonging to the same family were not grouped together, but rather distributed into different groups. Crosses between genotypes of group three and genotypes of groups one and two are recommended for the development of high-yielding genotypes when aiming at energy production.

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Section: Resultsmentioning

confidence: 99%

Genetic diversity based on multivariate techniques in elephant grass genotypes for bioenergy

Vidal,

Daher,

Freitas

et al. 2024

Braz. J. Biol.

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“…However, the inclusion of diversity of species, especially those with climax and late secondary characteristics, is also important to be considered. Barbosa et al (2021) developed an inventory in the same areas of the present study, aiming to establish key species for restoration of degraded lands after bauxite mining. Theses authors have determined some secondary and climax species as key species for restoration of bauxite mining areas, in addition to the pioneer species.…”

Section: Discussionmentioning

confidence: 99%

Phosphorus adsorption in a degraded soil under forestry recovery after bauxite mining in Paragominas, eastern Amazon, Brazil

et al. 2023

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The availability and retention of phosphorus (P) in soils under recovery process after mining operations play an important role in the management of this nutrient. The objective of this study was to evaluate the P adsorption in a reconstituted soil as a function of two forest recovery processes after bauxite mining. We evaluated three systems: native forest (FOR), planting of forest seedlings after bauxite mining (TPL), and natural regeneration of vegetation after bauxite mining (NRV). In each system, eight sampling plots were deployed. In each plot, we collected litter and soil samples. The soil samples were collected at depths of 0–5, 5–10, 10–20, and 20–40 cm, for soil chemical analysis and adjustment of P adsorption isotherms. We also performed an inventory of the tree vegetation to obtain basal area (G) and species diversity (H′). Forest was significantly superior with respect to most soil fertility, litter, and vegetation attributes, followed by natural regeneration and planting. In general, the adsorption curves and maximum phosphorus adsorption capacity (MPAC) in soil followed the order planting > natural regeneration > forest. We observed a negative relationship between phosphorus adsorption and soil organic matter, potential acidity, and available phosphorus. This result highlights the importance of biomass conservation and maintenance to ensure phosphorus availability in reclamation practices. Furthermore, such results indicate that both soil cover and plant species diversity should be considered when selecting species to improve P availability for reclamation of mined areas.

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Pit volume, soil cover and Eucalyptus forestry residues determine plant growth in restoring areas after gravel mining in eastern Amazon, Brazil

et al. 2023

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Key species selection for forest restoration after bauxite mining in the Eastern Amazon

Cited by 7 publications

References 20 publications

Genetic diversity based on multivariate techniques in elephant grass genotypes for bioenergy

Genetic diversity based on multivariate techniques in elephant grass genotypes for bioenergy

Phosphorus adsorption in a degraded soil under forestry recovery after bauxite mining in Paragominas, eastern Amazon, Brazil

Pit volume, soil cover and Eucalyptus forestry residues determine plant growth in restoring areas after gravel mining in eastern Amazon, Brazil

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