Florestas estacionais e áreas de ecótono no estado do Tocantins, Brasil: parâmetros estruturais, classificação das fitofisionomias florestais e subsídios para conservação

Haidar, Ricardo Flores; Fagg, Jeanine Maria Felfili; Pinto, José Roberto Rodrigues; Dias, Ricardo Ribeiro; Damasco, Gabriel; Silva, Lucas C. R.; Fagg, Christopher William

doi:10.1590/s0044-59672013000300003

Cited by 55 publications

(48 citation statements)

References 23 publications

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“…They found strong dominances of Myracrodruon urundeuva, Callisthene major, Cassia apoucouita, and Rollinia sylvatica, none of which was found at our study site. Haidar et al (2013), however, identified Caryocar coriaceum, Emmotum nitens, and Lafoensia pacari, all of which were also found in the present study. Therefore, as Ratter et al (1973) and Solórzano et al (2012) previously indicated, two types of cerradão occur in the Cerrado biome.…”

Section: Resultssupporting

confidence: 58%

Floristic, structural, and allometric equations to estimate arboreal volume and biomass in a cerradão site

Miguel

Rezende

Leal

et al. 2017

SCA

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This objective of this study was to characterize the floristic, structural, and ecological groups and to estimate the arboreal volume and biomass of a cerradão site in Palmas, Tocantins, Brazil. A forest inventory was conducted on 10.15 ha of the study area. Plots of 400-m 2 were used for systematic sampling. All standing trees (dead or alive) with a breast-height diameter (DHB) greater than 5 cm were identified and measured. Floristic diversity and horizontal structure were assessed using the Shannon and importance value indices, respectively. Forest vertical structure was classified into three stratata and the tree species were categorized into ecological groups. Ninety tree volumes were rigorously cubed and weighed. Fresh-and dry biomass were sampled and estimated. Mathematical models were applied and adjusted to estimate tree volume and biomass. It was observed that the species Myrcia splendens and Emmotum nitens and the families Fabaceae and Chrysobalanaceae were dominant in our study site. The pioneer (613 individuals ha -1 ) and climax (530 individuals ha -1 ) tree species group predominated. The floristic diversity index was estimated as 3.35 nats ind -1. The vertical structure analysis indicated fewer individuals in the superior stratum (13%) compared to the medium (63%) and inferior (24%) stratum. The Schumacher and Hall model showed better results with regard to estimated forest production. Forest volume and biomass estimates were 126.71 m³ ha -1 and 61.67 Mg ha -1 , respectively. The studied cerradão area had high floristic diversity and climax species predominated. Since this cerradão is in close proximity to the Amazon biome, its volume and biomass stocks were higher than those estimated for other cerradão and forest formations within the Cerrado biome. Key words: Brazil. Cerrado Biome. Forestry inventory. Ecological group. Production. ResumoO objetivo do estudo foi caracterizar a florística, a estrutura, o grupo ecológico e estimar os estoques de volume e biomassa arbórea em uma área de 10, 15 hectares de cerradão, localizado no município de Palmas, Estado do Tocantins, utilizando a amostragem sistemática com parcelas de 400 m². Foram amostradas e identificadas todas as árvores vivas e mortas em pé, com diâmetro a 1,3 metros do solo ≥ 5 cm. A diversidade florística foi avaliada pelo o índice Shannon e a estrutura horizontal pelo o Índice de Valor de Importância. Quanto a estrutura vertical, a floresta foi classificada em três estratos.

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Section: Resultssupporting

confidence: 58%

Floristic, structural, and allometric equations to estimate arboreal volume and biomass in a cerradão site

Miguel

Rezende

Leal

et al. 2017

SCA

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“…Beta diversity is also assessed comparing species composition among different communities (Magurran, 2004). Studies evaluating beta diversity for the Cerrado region are few and punctual (Felfili et al, 2004;Ferreira, 2006;Haidar et al, 2013). In tropical regions, similar studies focus on rainforests (Condit et al, 2002;Tuomisto et al, 2003;Davidar et al, 2007;Arroyo-Rodríguez et al, 2013).…”

Section: Introductionmentioning

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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“…In Tocantins State, the confluence of Amazon Forest and Cerrado areas are characterized by wide climatic and physical environment variations, and this diversity enables changes in the species floristic, structure and growth (HAIDAR et al, 2013;SILVA et al, 2006). Therefore, the studied cerradão showed a typical species of the Amazon biome (Mezilaurus itauba) and higher values of height (21 m) and diameter (65 cm) compared to other studied areas of cerradão (SILVA, 2009;GUILHERME;NAKAJIMA, 2007;SALIS et al, 2006).…”

Section: Nij Nmentioning

confidence: 81%

Floristic-Structural Characterization and Successional Group of Tree Species in the Cerrado Biome of Tocantins State, Brazil

et al. 2016

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-The objective of this study was to characterize the floristic composition, vegetation structure and ecological group of tree species in a cerradão forest (Cerrado biome) of Palmas, Tocantins State, Brazil. A forest inventory was performed in an area of 10.15 hectares, using systematic sampling with plots of 400 m², in which all standing trees, alive and dead, that had diameter at breast height (DBH) ≥ 5 cm were sampled and identified. A linear plateau regression model (LPR) was used for sample sufficiency analysis. The Shannon index (H') was used for assess the floristic diversity, and the Importance Value Index (IVI) for assess the horizontal structure. The forest was classified in three strata according to vertical structure analysis. The LPR showed that the sampling size was adequate. The predominate species in the area were Myrcia splendens, Emmotum nitens and Qualea parviflora, and species from the families Fabaceae and Chrysobalanaceae. The pioneer (613 individuals ha -1 ) and climax (530 individuals ha -1 ) species were the predominating groups. Regarding the richness index, the number of climax (57 species) and pioneer (25 species) species stood out. The alpha floristic diversity was 3.35 nats individuals -1 and the Pielou equability value J = 0.76. The diametric distribution showed a negative and balanced exponential pattern. Regarding the vertical stratification, the smallest amount of individuals was in the upper stratum (13%) and the highest in the mid stratum (63%) and in the lower stratum (24%). The use of floristic composition tools with horizontal and vertical structure analysis was effective for understand the tree community, which may be considered structured and diverse, thus able to restructure possible disturbances when preserved.Keywords: Floristic diversity. Phytosociology. Balanced forest. Ecological groups. CARACTERIZAÇÃO FLORÍSTICO-ESTRUTURAL E GRUPO SUCESSIONAL DE ESPÉCIES ARBÓREAS NO BIOMA CERRADO DO ESTADO DE TOCANTINS, BRASILRESUMO -Objetivo deste estudo foi caracterizar a composição florística, a estrutura da vegetação e os grupos ecológicos das espécies arbóreas em área de cerradão em Palmas, Tocantins. Foi realizado um inventário florestal em área de 10,15 hectares, utilizando amostragem sistemática com parcelas de 400 m², onde foram amostradas e identificadas todas as árvores vivas e mortas em pé, com DAP ≥ 5 cm. Na análise da suficiência amostral utilizou-se a regressão linear com resposta em platô (REGRELRP ). No quesito riqueza, as espécies clímax sobressaíram (57 espécies), pioneiras (25 espécies). A diversidade alfa florística foi de 3,35 nats indivívideos -1 e o valor de equabilidade de Pielou J = 0,76. A distribuição diamétrica apresentou comportamento exponencial negativo e balanceada. Em relação aos estratos verticais, a menor quantidade de indivíduos é encontrada no estrato superior (13%), a maior no estrato médio (63%) e o estrato inferior (24%). A área estudada foi caracterizada como estruturada e diversa conforme composição florística e fitossociológica en...

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Florestas estacionais e áreas de ecótono no estado do Tocantins, Brasil: parâmetros estruturais, classificação das fitofisionomias florestais e subsídios para conservação

Cited by 55 publications

References 23 publications

Floristic, structural, and allometric equations to estimate arboreal volume and biomass in a cerradão site

Floristic, structural, and allometric equations to estimate arboreal volume and biomass in a cerradão site

Diversity and indicator species in the cerrado biome, Brazil

Floristic-Structural Characterization and Successional Group of Tree Species in the Cerrado Biome of Tocantins State, Brazil

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