Composição e estrutura de comunidades arbóreas de cerrado stricto sensu no norte do Tocantins e sul do Maranhão

Medeiros, Marcelo Brilhante de; Walter, Bruno Machado Teles

doi:10.1590/s0100-67622012000400009

Cited by 29 publications

(13 citation statements)

References 13 publications

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“…Furthermore, Andrade et al (2002) found a Shannon-Weaver index of 3.53 in a dense Cerrado area at RECOR-IBGE in Brasilia. Other values similar to this study were found by Medeiros et al (2012) when evaluating the composition and structure of Cerrado stricto sensu tree communities in Filadélfia (TO): Shannon-Weaver diversity index of 3.32.…”

Section: Resultssupporting

confidence: 88%

Floristics, phytosociology and productivity in riparian areas of Cerrado

Coelho¹,

Gregório²,

Limeira³

et al. 2018

Científica

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Having a water system free of deforestation and pollution around the city is a constant struggle since it often suffers from contamination, silting, loss of fauna and devastation of riparian forests. The studied area is a remnant of riparian forest that includes the streams of the urbanized microbasin of the municipality of Gurupi (Água Franca, Dois Irmãos, Mutuca, Pouso do Meio I and Pouso do Meio II). This research evaluates phytosociological and floristic indicators, volume, biomass and shoot carbon stock. The goal is to determine biodiversity, richness and productivity, aiming to maintain these resources and manage their continuous flow. The method used was a temporary systematic inventory, obtaining the following measures: total height (m); CBH (circumference at breast height), with values ≥ 15 cm being converted to DBH (diameter at breast height); stem quality; and sociological position. To determine productivity, we used equations established in the forest literature. The number of arboreal individuals, botanical species and families were respectively: 616, 66 and 40 for the Água Franca stream; 288, 46 and 22 for the Dois Irmãos stream; 560, 54 and 32 for the Mutuca stream; 307, 36 and 19 for the Pouso do Meio I stream; and 113, 15 and 11 for the Pouso do Meio II stream. The estimated values of shoot biomass, shoot carbon and total volume indicate that the areas are quite altered, with the need for recovery actions so that the water system is maintained, guaranteeing the quality of life of the population.Additional keywords: floristic diversity; urbanized microbasin; vertical and horizontal structures. ResumoTer um sistema hídrico, em torno da cidade, livre de desmatamento e poluição é luta constante, pois este frequentemente sofre com a contaminação, assoreamentos, perda da fauna e devastação das matas ripárias. A área estudada é de mata ripária remanescente que compreende os córregos da microbacia urbanizada do município de Gurupi (Água Franca, Dois Irmãos, Mutuca, Pouso do Meio I e Pouso do Meio II), com o objetivo de avaliar indicadores fitossociolóicos, florísticos,volume, biomassa e estoque de carbono aéreo, de forma a determinar a biodiversidade, riqueza e produtividade para viabilizar a manutenção, garantindo o fluxo contínuo desses recursos de forma manejada. O método utilizado foi o inventário sistemático temporário, onde foram medidas: altura total (m), CAP (circunferência à altura do peito) com valores ≥ 15 cm, sendo convertido em DAP (Diâmetro à altura do peito), qualidade do fuste e posição sociológica. Para determinar a produtividade, foram utilizadas equações consagradas na literatura florestal. O número de indivíduos arbóreos, espécies e famílias botânicas foi, respectivamente, de: 616; 66 e 40 para o córrego Água Franca; 288; 46 e 22 para o córrego Dois Irmãos; 560; 54 e 32 para o córrego Mutuca; 307; 36 e 19 para o córrego Pouso do Meio I e 113; 15 e 11 para o córrego Pouso do Meio II.Os valores estimados de biomassa aéreas, carbono aéreo e volume total indicam que as áreas se encontram ...

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Section: Resultssupporting

confidence: 88%

Floristics, phytosociology and productivity in riparian areas of Cerrado

Coelho¹,

Gregório²,

Limeira³

et al. 2018

Científica

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“…Approximately ¼ -⅓ of the tropical species are sampled in low densities (Hartshon, 1980). In addition, most phytosociological studies have reported few species contributing to the total density (percent contribution) in different savanna or tropical forest formations (Felfili et al, 2007;Pinto et al, 2007;Medeiros and Walter, 2012;Giácomo et al, 2013).…”

Section: Richness and Alfa Diversitymentioning

confidence: 99%

Diversity and indicator species in the cerrado biome, Brazil

Ferreira¹,

Machado²,

Silva-Neto³

et al. 2017

Aust J Crop Sci

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The Cerrado biome has high species richness, endemism and spatial heterogeneity. Knowing the main characteristics and peculiarities of the flora is essential to adequately protect the species richness of the Cerrado. Therefore, the objective of this study was to analyze the species richness, alpha diversity and beta diversity of four vegetation types in the Paracatu River Basin (15°30'/19°30'S and 45°10'/47°30'W), Paracatu-MG. The four vegetation types cerrado (stricto sensu, "cerradão" or Savannah woodland, deciduous seasonal forest and riparian forest) were sampled following the Manual for Monitoring Permanent Plots of the Cerrado and Pantanal Biomes. Alpha diversity was assessed using the Simpson (Ds´) and Shannon & Wiener (H') indexes, and beta diversity using the Sørensen and Jaccard similarity indexes. The "cerradão" vegetation type had the highest number of species (106) and highest alpha diversity (3.83nats.ind -1 ). The cerrado stricto sensu had the lowest species richness (54 species) and alpha diversity value (2.65 nats. ind -1 ). Beta diversity was high (low Jaccard and Sørensen similarity) except between cerrado stricto sensu and "cerradão". The initial hypothesis of this study was rejected, because although the phytophysiognomies are located on the same land system, the beta diversity is high, except for the cerrado stricto sensu and "cerradão", which had similar diversity.

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“…A listagem florística observada no presente estudo foi comparada com listas de outros fragmentos de Cerrado sensu stricto, presentes no Estado do Tocantins e Goiás (ASSUNÇÃO & FELFILI, 2004;FELFILI & FAGG, 2007;CARVALHO et al, 2008;MEDEIROS & WALTER, 2012).…”

Section: Methodsunclassified