Composição e diversidade florístico-estrutural de um hectare de floresta densa de terra firme na Amazônia Central, Amazonas, Brasil

Oliveira, Arlem Nascimento de; Amaral, Iêda Leão do; Ramos, Michele Braule Pinto; Nobre, Antônio Donato; Couto, Luciana Bovino; Sahdo, Rosana Martiniano

doi:10.1590/s0044-59672008000400005

Cited by 76 publications

(90 citation statements)

References 28 publications

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“…Similar to Boubli (2002), we found that 40% of the trees registered in white-sand and terra-firme plots have a DBH between 10 and 15 cm. Comparable diameter size-class distributions have been commonly reported for terra-firme forests in other regions of Amazonia (Amaral et al 2000;Lima Filho et al 2001;Pitman et al 2002;Oliveira and Amaral 2004;Oliveira et al 2008).…”

Section: Forest Structurementioning

confidence: 49%

Tree communities of white-sand and terra-firme forests of the upper Rio Negro

Stropp¹,

Sleen

Assunção³

et al. 2011

Acta Amaz.

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The high tree diversity and vast extent of Amazonian forests challenge our understanding of how tree species abundance and composition varies across this region. Information about these parameters, usually obtained from tree inventories plots, is essential for revealing patterns of tree diversity. Numerous tree inventories plots have been established in Amazonia, yet, tree species composition and diversity of white-sand and terra-firme forests of the upper Rio Negro still remain poorly understood. Here, we present data from eight new one-hectare tree inventories plots established in the upper Rio Negro; four of which were located in white-sand forests and four in terra-firme forests. Overall, we registered 4703 trees ≥ 10 cm of diameter at breast height. These trees belong to 49 families, 215 genera, and 603 species. We found that tree communities of terra-firme and white-sand forests in the upper Rio Negro significantly differ from each other in their species composition. Tree communities of white-sand forests show a higher floristic similarity and lower diversity than those of terra-firme forests. We argue that mechanisms driving differences between tree communities of white-sand and terra-firme forests are related to habitat size, which ultimately influences large-scale and long-term evolutionary processes. KEYWORDS: tree communities, tree inventory plots, terra-firme forest, white-sand forest, upper Rio Negro Comunidades de árvores em florestas de campinarana e de terra-firme do alto Rio Negro RESUMOA vasta extensão e a alta diversidade de árvores das florestas na Amazônia desafiam a nossa compreensão sobre como variam a composição e abundância de espécies arbóreas ao longo desta região. Informações sobre estes parâmetros, geralmente obtidas a partir de inventários florísticos, são fundamentais para análises sobre padrões de diversidade. Embora inúmeros inventários florísticos tenham sido estabelecidos na Amazônia, a composição de espécies e a diversidade de árvores das florestas de campinarana e de terra-firme, na região do alto Rio Negro, permanecem ainda pouco conhecidas. Aqui, apresentamos dados de inventários florísticos de oito parcelas de um hectare estabelecidas em florestas de campinarana e de terra-firme do alto Rio Negro. Ao todo, registramos 4.703 indivíduos com diâmetro à altura do peito ≥ 10 cm pertencentes a 49 famílias, 215 gêneros e 603 espécies. As comunidades de árvores das florestas de campinarana e terra-firme do alto Rio Negro diferem entre si, sendo que as florestas de campinaranas são mais similares e menos diversas que as florestas de terra-firme. Sugerimos que os mecanismos que causam diferenças entre as comunidades arbóreas das florestas de campinarana e terra-firme são principalmente relacionados a diferenças do tamanho do habitat, isto porque o tamanho da área do habitat influencia processos evolutivos que ocorrem em grande escala temporal e espacial.

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Section: Forest Structurementioning

confidence: 49%

Tree communities of white-sand and terra-firme forests of the upper Rio Negro

Stropp¹,

Sleen

Assunção³

et al. 2011

Acta Amaz.

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“…The representativeness of these families as hosts is understandable, since these are the most diverse and abundant families according to various floristic surveys in the Amazon, although these studies do not associate them with the epiphytic community (Amaral et al 2000;Duque et al 2003;Oliveira et al 2008;Silva et al 2008). This result may indicate that epiphytes occurred more frequently on these phorophytes because these species possess a wide distribution, as well as high density in terra firme forests in the Amazon and, therefore, the majority of available species and individuals in this forest may be conducive to epiphytic colonization.…”

Section: Resultsmentioning

confidence: 99%

Floristic composition and community structure of epiphytic angiosperms in a terra firme forest in central Amazonia

et al. 2013

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10 cm) were sampled. We recorded 3.528 individuals in 13 families, 48 genera and 164 species. Araceae was the most prevalent family with regard to the importance value and stood out in all related parameters, followed by Bromeliaceae, Cyclanthaceae and Orchidaceae. The species with the highest epiphytic importance values were Guzmania lingulata (L.) Mez. and Philodendron linnaei Kunth. The predominant life form was hemiepiphytic. Estimated floristic diversity was 3.2 (H'). The studied epiphytic community was distributed among 727 host plants belonging to 40 families, 123 genera and 324 species. One individual of Guarea convergens T.D. Penn. was the host with the highest richness and abundance of epiphytes. Stems/trunks of host plants were the most colonized segments, and the most favorable habitat for epiphytism was the lowlands, where 84.1% of species and 48.2% of epiphytic specimens were observed.]]>

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“…The lower DBH classes concentrate 70% of the total volume per hectare ( Figure 6). Trees of the Eschweilera genus with a DBH ≥ 50 cm are rare and sparse [25,26,28,39,40]. Paragraph 3 of the CONAMA resolution allows for changes to the minimum diameter permitted for logging (DMC) [38].…”

Section: Discussionmentioning

confidence: 99%

“…However, these differences are not well distributed in terms of number of individuals (abundance) [16]. There are only a few botanical genera that represent nearly half of all trees in the Amazon, with the Eschweilera, Protium, and Euterpe genera being the most abundant [16,40,42]. Trees of the Eschweilera genus, aside from their huge abundance in the Amazon basin [16], have a large density of individuals in the central Amazon [28].…”

Section: Discussionmentioning

confidence: 99%

Tree Climbing Techniques and Volume Equations for Eschweilera (Matá-Matá), a Hyperdominant Genus in the Amazon Forest

Giménez

Santos

Gebara

et al. 2017

Forests

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Abstract:The Eschweilera genus has great ecological and economic importance due to its wide abundance in the Amazon basin. One potential use for the Eschweilera genus is in forest management, where just a few trees are removed per hectare. In order to improve the forest management in the Amazon, this study assessed two critical issues: volume equations fitted for a single genus and the development of a non-destructive method using climbing techniques. The equipment used to measure the sample trees included: climbing rope, ascenders, descenders, and carabiners. To carry out the objectives of this study, 64 trees with diameter at breast height (DBH) ≥ 10 cm were selected and measured in ZF-2 Tropical Forestry Station near the city of Manaus, Brazil. Four single input models with DBH and four dual input models with DBH and merchantable height (H) were tested. The Husch model (V = a × DBH b ) presented the best performance (R 2 = 0.97). This model does not require the merchantable height, which is an important advantage, because of the difficulty in measuring this variable in tropical forests. When the merchantable height data are collected using accurate methods, the Schumacher and Hall model (V = a × DBH b × H c ) is the most appropriated. Tree climbing techniques with the use of ropes, as a non-destructive method, is a good alternative to measure the merchantable height, the diameter along the stem, and also estimate the tree volume (m 3 ) of the Eschweilera genus in the Amazon basin.

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Composição e diversidade florístico-estrutural de um hectare de floresta densa de terra firme na Amazônia Central, Amazonas, Brasil

Cited by 76 publications

References 28 publications

Tree communities of white-sand and terra-firme forests of the upper Rio Negro

Tree communities of white-sand and terra-firme forests of the upper Rio Negro

Floristic composition and community structure of epiphytic angiosperms in a terra firme forest in central Amazonia

Tree Climbing Techniques and Volume Equations for Eschweilera (Matá-Matá), a Hyperdominant Genus in the Amazon Forest

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