Tendências ecológicas na anatomia da madeira de espécies da comunidade arbórea da Reserva Biológica de Poço das Antas, Rio de Janeiro, Brasil

Barros, Cláudia Franca; Marcon-Ferreira, Micheline Leite; Callado, Cátia Henriques; Lima, Helena Regina Pinto; Cunha, Maura Da; Marquete, Osnir; Costa, Cristiane Maria Amorim

doi:10.1590/2175-7860200657305

Cited by 21 publications

(23 citation statements)

References 18 publications

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“…Angyalossy (2000, 2002) studied wood traits for several Brazilian regions and showed some trends. Barros et al (2006) observed some features characterizing an area of Atlantic Forest forma-tion. Bosio et al (2010) studied Miconia sellowiana wood occurring in three forest formations of Atlantic forest in Southern Brazil.…”

Section: Introductionmentioning

confidence: 99%

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Wood anatomical traits of the Araucaria Forest, Southern Brazil

et al. 2016

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SUMMARYThe goal of the present study was to find a pattern regarding wood anatomical features for the Araucaria Forest. For that, we studied the wood anatomy of 17 tree species characteristics of this forest formation of Southern Brazil. The species were selected based on the amplified importance value. Wood samples of three individuals per species were collected and prepared according to standard wood anatomical techniques. Most of the species can be grouped according to the presence of the following features: visible growth rings, diffuse porosity, absence of any typical vessel arrangement, simple perforation plate, simple to diminute bordered pits in fibers, little axial parenchyma, heterogeneous rays. The Grouping Analysis of qualitative and quantitative characters groups the species together, but two are distinct from the others: Cinnamodendron dinisii and Roupala montana. Principal Component Analysis explained 69 % of the total variance, influenced by rays height and width, vessel element and fiber length, separating Cinnamodendron dinisii and Roupala montana from the others. Results corroborated ecological wood anatomical patterns observed for other species in other tropical and subtropical vegetation formations occurring in higher altitudes and latitudes, where the species can be characterized by the presence of visible growth rings, predominantly solitary vessels, simple perforation plates and little axial parenchyma.

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Section: Introductionmentioning

confidence: 99%

“…Many authors demonstrated that several wood features respond to abiotic conditions such as: variations in diameter, length and frequency of vessels (Carlquist 2001, Luchi 2004, Bosio et al 2010, Melo Júnior et al 2011; length and width of fiber walls (Luchi 2004); presence of growth rings Angyalossy 2000, Luchi 2004, Barros et al 2006). …”

Section: Introductionmentioning

confidence: 99%

Wood anatomical traits of the Araucaria Forest, Southern Brazil

et al. 2016

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“…Despite the floristic and phytosociological information on plant diversity (Nunes-Freitas 2004), morphological and anatomical data may also show the diversity patterns found in a given ecosystem and their adaptive potential (Barros et al 2006). Thus, the Cerrado may be considered to be quite diverse, because its species evolved under different selective pressures (Fowler and Duarte 1991), by adapting themselves to environments containing acidic, dystrophic soils, and prolonged dry periods (Castro et al 1999).…”

Section: Introductionmentioning

confidence: 99%

Leaf anatomy of Qualea parviflora (Vochysiaceae) in three phytophysiognomies of the Mato Grosso State, Brazil

Ariano

Silva

2016

Acta Amaz.

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Leaves have a variety of morphological and anatomical characters mainly influenced by climatic, edaphic and biotic factors. The aim of this study was to describe the anatomical leaf traits of Qualea parviflora from three phytophysiognomies. The studied phytophysiognomies were Amazon Savannah on rocky outcrops (ASR), Transition Rupestrian Cerrado (TRC), and Cerradão (CDA). Freehand sections of the leaf blade were made and stained with 0.5% astra blue and with basic fuchsin. From the adaxial and abaxial leaf surface, freehand paradermal sections were made for epidermis analysis. The Jeffrey´s method, with modifications, was used in the epidermis dissociation process. The samples from the TRC phytophysiognomy had relatively smaller ordinary epidermal cells, higher abundance of trichomes, and mesophyll with few intercellular spaces, in comparison to the other phytophysiognomies. The leaves from the ASR phytophysiognomy had higher stomatal index (SI = 21.02), and five to six layers of sclerenchyma surrounding the midrib vascular bundle. The secondary vascular bundles had thicker cell walls and the bundle sheath extended up to the epidermal tissue of both leaf sides. Leaves from the CDA phytophysiognomy had mesomorphic environmental traits, such as a thinner cuticle. It is concluded that trees from ASR and TRC phytophysiognomies have xeromorphic traits following the environmental conditions where they occur. KEYWORDS: Adaptations, Amazon, Cerrado, Environmental conditions. Anatomia foliar de Qualea parviflora (Vochysiaceae) em três fitofisionomias do Estado Mato Grosso, Brasil RESUMOAs folhas são órgãos vegetativos que expressam uma variedade de características morfológicas e anatômicas influenciadas, principalmente, por fatores climáticos, edáficos e bióticos. O presente estudo objetivou levantar as características anatômicas das folhas de Qualea parviflora Mart. presente em três fitofisionomias: Savana Amazônica sobre afloramentos rochosos (SAR), Cerrado Rupestre de Transição (CRT) e Cerradão (CDA). Os cortes anatômicos foram realizados a mão livre e corados com azul de astra e fucsina básica 0,5%. Para a dissociação das epidermes, foi utilizado o método de Jeffrey modificado. As amostras da fitofisionomia de CRT apresentaram células epidérmicas comuns relativamente menores, maior quantidade de tricomas e mesofilo com poucos espaços intercelulares em relação as demais fitofisionomias. As amostras da fitofisionomia de SAR apresentaram maior índice estomático (IE: 21,05), maior quantidade de esclerênquima envolvendo o feixe vascular da nervura central (5 a 6 camadas), feixes vasculares secundários com células de paredes mais espessadas, com bainha que se estende até as células epidérmicas em ambas as faces. As amostras da fitofisionomia de CDA apresentaram caracteres de ambientes mesomórficos, como cutícula mais delgada. Pôde-se concluir que os espécimes que ocorrem em SAR e CRT apresentaram características xeromórficas que estão relacionados ao ambiente de ocorrência.

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“…According to the studies of Alves and Angyalossy-Alfonso (2000), Barros et al (2006), Worbes (1989Worbes ( , 1999 of growth rings demarcated by marginal bands of axial parenchyma and fi ber zones were easier to observe in charcoals because of the large size of the cells. On the other side, marginal lines/bands of axial parenchyma and proximity of axial scalariform or reticulate parenchyma are not always easily observed.…”

Section: Discussionmentioning

confidence: 99%

A contribution to the identification of charcoal origin in Brazil II - Macroscopic characterization of Cerrado species

Gonçalves

Nisgoski

Oliveira

et al. 2016

An. Acad. Bras. Ciênc.

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The Brazilian Cerrado is the richest savanna in the world. It is also one of the biomes more threatened in the country and a hotspot for conservation priorities. The main causes of deforestation in Cerrado are agricultural practices, livestock and charcoal production. Although charcoal has a minor impact, its consumption represents the deforestation of 16.000 Km² of the Cerrado. To contribute for the biomes's conservation it is very important to improve forestry supervision. Thus, in this work we present the macroscopic characterization of charcoal from 25 Cerrado's species. We simulate the real conditions of forest controllers by using the magnifi cations of 10x, 25x and 65x. Likewise, the charcoals micrographs are all of transverse sections due to the larger amount of anatomical information. We also analyzed texture, brightness, vitrifi cation, ruptures and some special features. The species present several differences in their anatomical structure. Although some of them are very unique, this work does not intent to identify charcoals only by macroscopic analyses. But it might give directions to future identifi cation of genera or species. It also provides knowledge for government agents to verify the documents of forestry origin by fast analyzing a sample of charcoal itself.

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Tendências ecológicas na anatomia da madeira de espécies da comunidade arbórea da Reserva Biológica de Poço das Antas, Rio de Janeiro, Brasil

Cited by 21 publications

References 18 publications

Wood anatomical traits of the Araucaria Forest, Southern Brazil

Wood anatomical traits of the Araucaria Forest, Southern Brazil

Leaf anatomy of Qualea parviflora (Vochysiaceae) in three phytophysiognomies of the Mato Grosso State, Brazil

A contribution to the identification of charcoal origin in Brazil II - Macroscopic characterization of Cerrado species

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