Comparação Florístico-Estrutural Dos Estratos Adultos E Regenerantes Em Área Minerada De Campo Rupestre, Diamantina, Mg

Amaral, Cristiany Silva; Amaral, Wander Gladson; Pereira, Israel Marinho; Oliveira, Paula Alves; Machado, Vinícius de Morais

doi:10.1590/01047760201521021405

Cited by 6 publications

(5 citation statements)

References 12 publications

(9 reference statements)

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“…Additionally, E. erythropappus trees are easy to be propagated even in many soil types and conditions due to its ecological preferences (Amaral et al, 2015;Meira et al, 2015;Pereira et al, 2015). We recommend therefore that management initiatives spearheaded by the Brazilian government should encourage land owners to cultivate this species for commercial use or forest restoration areas.…”

Section: Currentmentioning

confidence: 99%

Potential and Future Geographical Distribution of Eremanthus erythropappus (DC.) MacLeish: a Tree Threatened by Climate Change

et al. 2019

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Eremanthus erythropappus is a commercially-important tree which has a long history of exploitation in the Brazilian State of Minas Gerais. The knowledge on the potential geographical distribution of E. erythropappus is therefore critical for the species sustainability. Thus, the aim of this study was to estimate and map current and future ecological niche for E. erythropappus in Minas Gerais. We used the Random Forests algorithm to model the ecological niche for current and future climates scenarios. Our predictions indicate Espinhaço, Mantiqueira, and Canastra mountain ranges as core areas of distribution and forecast drastic reductions in potential areas under all climate scenarios. Based on our results, we highlight that the continual harvesting of naturally-occurring E. erythropappus populations will not be sufficient to supply the market demand. Silviculture practices would likely serve as an economically viable and ecological sustainable alternative to harvesting natural populations.

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Section: Currentmentioning

confidence: 99%

Potential and Future Geographical Distribution of Eremanthus erythropappus (DC.) MacLeish: a Tree Threatened by Climate Change

et al. 2019

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“…This result generalizes as an expected consensus in tropical forests, due to high proportion of regenerating individuals in early ontogenetic classes. As plants recruit to larger classes, mortality rates increase because of the risks associated with herbivory, competition and other biotic and abiotic stresses, so that only the most adapted individuals continue developing [14,15,37]. In the present study, G. opposita species, which is predominant in the phytogeographic domain of the Atlantic Forest, presented high values for adult component, but, low values for TNR (0.80%).…”

Section: Fig 3 Sample Intensity Curve By Interpolation (-) and Extrapolation (--) Both With 95% Confidence Intervals (Shaded Areas) Arbormentioning

confidence: 51%

Diversity and Structure of Adult and Regenerating Arbor Component in Forest ‘Submontana’, Paraíba-Brazil

Santos

Medeiros²,

Santos

et al. 2018

JEAI

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The objective of this research was to study the diversity and similarity profiles of vegetal species from adult and regenerating arboreal component in 'submontana' forest area, evaluating the modulation of the effective numbers of vegetal species on the different strata. An area of 4400 m 2 was sampled in a remaining rainforest (Open Ombrophylous Forest), in which woody species of adult stratum and regenerating were measured. All woody individuals were considered among the adult strata with CFG ≥ 10 cm in circumference (circumference of the trunk at 30 cm from the ground). Regenerating components were measured in the same plot (CFG < 10 cm), to justify richness and diversity comparisons in the same scale of the area. The numbers of effective Hill diversity (qD) to Shannon entropy, Simpson and species Richness was estimated by rarefaction (P = .05). The effective plant species numbers (qD) were estimated at 71.00; 37.48 and 25.31 species in relation to adult stratum, and 69.0; 25.36 and 16.87 species for the regenerant. No significant differences were found for richness of species among the strata. On the other hand, when plant species abundances were intensified as more important in the diversity measures, it was proved that the tree component began to maintain greater diversity, by Shannon and Simpson's entropy. The pattern of proportionality in species abundance changed systematically as the community directed its development to the adult stratum. The hypothesis on floristic similarity was confirmed, indicating reasonable perspectives on the regeneration power of these forests, front of the great scenario of moderate local disturbances.

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“…A classe de solos predominante é Neossolo Quartzarênico, que promove a formação de solos arenosos e rasos (Amaral et al 2015;FEAM 2010). A área de estudo encontra-se em uma região considerada de elevada fragilidade ambiental potencial, quando considerados fatores biofísicos da região (França 2018).…”

Section: Caracterização Da áRea De Estudounclassified

Conflitos de Uso da Terra em Áreas de Preservação Permanente no Alto Rio Jequitinhonha, Brasil

França

Ferraz

Morais

et al. 2022

Anu. Inst. Geociênc.

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A exploração das riquezas minerais da região do Alto Rio Jequitinhonha, em Minas Gerais, condicionou a degradação ambiental produzida na paisagem desde o século XVIII. A partir disso, este estudo objetivou analisar o conflito do uso da terra em Áreas de Preservação Permanente (APP) de mata ciliar do rio Jequitinhonha, Minas Gerais, segundo o Código Florestal brasileiro. Realizouse o mapeamento do uso e cobertura da terra utilizando imagens RapidEye e a delimitação das APP em ambiente SIG. As classes geradas foram: (I) Vegetação Natural, (II) Afloramento Rochoso, (III) Área Antropizada e (IV) Curso Hídrico. A definição das APPs foi estabelecida de acordo com as diretrizes da legislação florestal. A sobreposição do mapa de uso e cobertura da terra com a delimitação das APP originou o mapa de usos conflitantes. A área total ocupada pelas formas de cobertura no território destinado à APP, subtraindose a classe Curso Hídrico, foi 2,10 km². Constatou-se 30,9% de uso indevido nos limites da APP (classe Área Antropizada). Diante dos resultados deste trabalho, nota-se que o cumprimento da legislação florestal e a fiscalização ambiental das propriedades rurais na área de estudo ainda são insuficientes. Salienta-se a necessidade de recomposição das áreas de APP, de modo a assegurar os serviços ecossistêmicos e hidrológicos relacionados à conservação ambiental. Os procedimentos metodológicos aqui aplicados, podem ser replicados para outras ecorregiões do Brasil, sob respaldo do código florestal brasileiro e legislações vigentes.

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Comparação Florístico-Estrutural Dos Estratos Adultos E Regenerantes Em Área Minerada De Campo Rupestre, Diamantina, Mg

Cited by 6 publications

References 12 publications

Potential and Future Geographical Distribution of Eremanthus erythropappus (DC.) MacLeish: a Tree Threatened by Climate Change

Potential and Future Geographical Distribution of Eremanthus erythropappus (DC.) MacLeish: a Tree Threatened by Climate Change

Diversity and Structure of Adult and Regenerating Arbor Component in Forest ‘Submontana’, Paraíba-Brazil

Conflitos de Uso da Terra em Áreas de Preservação Permanente no Alto Rio Jequitinhonha, Brasil

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