Variação intraespecífica do lenho de Eugenia uniflora L. em duas diferentes fitofisionomias do complexo vegetacional atlântico

Marques, Patricia; Callado, Cátia Henriques; Barros, Cláudia Franca; Costa, Cristiane Maria Amorim

doi:10.4322/floram.2012.056

Cited by 10 publications

(6 citation statements)

References 45 publications

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“…We obtained stem samples (40 mm in diameter) from three individual trees of each species at approximately 1.30 m aboveground level using an increment borer (Marques et al . ), placed the samples in plastic cylinders to ensure sample integrity, and examined them in the laboratory. We analyzed wood density as described by Hacke et al .…”

Section: Methodsmentioning

confidence: 99%

“…We obtained stem samples (40 mm in diameter) from three individual trees of each species at approximately 1.30 m aboveground level using an increment borer (Marques et al 2012), placed the samples in plastic cylinders to ensure sample integrity, and examined them in the laboratory. We analyzed wood density as described by Hacke et al (2000): wood samples were immersed in a beaker containing water that was placed on a high-precision balance and the weight of displaced water was converted into volume using an equation that adjusts for changes in water density at different temperatures.…”

Section: Methodsmentioning

confidence: 99%

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Weak relationships between leaf phenology and isohydric and anisohydric behavior in lowland wet tropical forest trees

et al. 2016

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Wet tropical forest trees display a wide range of leaf phenology dynamics. However, the interrelation between deciduousness, water status, and leaf and stem characteristics have been poorly investigated compared with dry forests. We studied wet forest trees to answer the following questions: (1) do water regulation modes (iso/anisohydric behavior) of evergreen species differ from those found in deciduous species? (2) Does leaf water potential (ΨL) influences leaffall and emergence dynamics? (3) Are leaf and stem characteristics consistent across evergreen and deciduous trees? We evaluated vegetative phenology, ΨL, and leaf and stem characteristics of six evergreen and three deciduous species monthly for 2 yr. Species exhibited different leaffall and emergence dynamics, as well as different water regulation modes, independent of their deciduousness. Thus, the relationship between leaf phenology and water regulation behaviors appears to be a species‐specific property rather than a functional group attribute. ΨL had no direct influence on the dynamics of leaffall and/or emergence, indicating that this process is not modulated by water availability alone. Individual groups of evergreen and deciduous species could not be identified using principal component analysis (PCA), but a decoupling was observed in the leaf and stem economics spectra. The lack of an interrelation between deciduousness and iso/anisohydry, as well as the independence of leaf and stem trade‐offs, emphasizes that more systematic measurements of vegetative phenology and ecophysiological characteristics are necessary to advance our knowledge of leaf habit and water regulation behaviors based on the functional traits of wet forest plants.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Weak relationships between leaf phenology and isohydric and anisohydric behavior in lowland wet tropical forest trees

et al. 2016

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“…their absence, however, might not be uncommon in tribe Myrteaee.g. Marques (2010) reported vasicentric tracheids in only 3 out of 8 Eugenia species studied.…”

Section: Discussionmentioning

confidence: 99%

“…An analysis of wood anatomical data of other Myrtean genera described in literaturee.g. some Eugenia (Détienne & Jacquet 1993;Marques 2010) and some Myrcia (Barros et al 2001) -shows that their wood structure is often very similar to that of Myrciaria, Neomitranthes, Plinia and Siphoneugena. Santos (2012) studied the wood anatomy of 26 species of southern Brazilian Myrtaceae and did not find any characters that could separate genera (except for Myrceugenia, based on pit morphology).…”

Section: Discussionmentioning

confidence: 99%

Wood Anatomy of Myrciaria, Neomitranthes, Plinia and Siphoneugena Species (Myrteae, Myrtaceae)

Santos¹,

Callado²,

Souza³

et al. 2013

IAWA J

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Myrciaria, Neomitranthes, Plinia and Siphoneugena are closely related genera whose circumscriptions are controversial. The distinctions between Myrciaria vs. Plinia, and Neomitranthes vs. Siphoneugena, have been based on a few fruit characters. The wood anatomy of 24 species of these genera was examined to determine if wood anatomical features could help delimit the genera. It was determined the four genera cannot reliably be separated by wood anatomy alone. Characteristics seen in all four genera are: growth rings usually poorly-defined; diffuse porous; exclusively solitary vessels, usually circular to oval in outline; simple perforation plates; vessel-ray pits alternate and distinctly bordered; fibers with distinctly bordered pits in radial and tangential walls, usually very thickwalled; vasicentric tracheids typically absent; scanty paratracheal parenchyma, sometimes unilateral, and diffuse to diffuse-in-aggregates; chambered crystalliferous axial parenchyma in many species, usually both prismatic and smaller crystals; rays 1–4-seriate, uniseriate rays composed of upright/square cells, multiseriate rays with procumbent body cells and 1 to many marginal rows of upright/square cells; disjunctive ray parenchyma cells usually present.

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“…A anatomia ecológica do lenho abrange o estudo das influências ambientais sobre as variações estruturais de espécies lenhosas, sendo conhecida como a abordagem ecológica de anatomia da madeira (Baas, 1973). Estudos de anatomia de lenho têm sido realizados no sentido de relacionar as características anatômicas dos vegetais aos diferentes mecanismos de colonização, estabelecimento e desenvolvimento de espécies em seu ambiente natural, assim como as conseqüências advindas das modificações desses ambientes (Marques et al, 2012). Desta forma, diferentes condições ambientais podem produzir distintos fenótipos em plantas, sendo tal resposta denominada plasticidade fenotípica (Bradshaw, 2006).…”

Section: Introdução E Revisão De Litera-turaunclassified

Anatomia ecológica da madeira de Rudgea viburnoides (Cham.) Benth. (Rubiaceae) em campo cerrado e rupestre

2016

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O presente estudo compara a anatomia do lenho de Rudgea viburnoides em duas fisionomias de cerrado. O grupo amostral foi composto de cinco espécimes em cada fisionomia (campo cerrado e campo rupestre). Preparações histológicas e caracterização anatômica seguiram os procedimentos usuais em anatomia da madeira. Diferenças estatisticamente significativas ocorreram entre as populações para atributos dos vasos, fibras e parênquima radial. Cristais prismáticos foram exclusivos no lenho em campo rupestre e tilos em campo cerrado. Em ambas as fisionomias máculas foram encontradas no lenho. O índice de mesomorfia evidenciou que a espécie está adaptada a ambientes secos, enquanto os índices de condutividade e vulnerabilidade mostraram que os espécimes do campo rupestre são mais eficientes na condução hidráulica, porém mais propensão à cavitação. As características anatômicas verificadas no lenho evidenciam variações intraespecíficas distintivas entre as populações estudadas e podem ser interpretadas como respostas adaptativas da espécie à heterogeneidade ambiente das fisionomias de cerrado.

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Variação intraespecífica do lenho de Eugenia uniflora L. em duas diferentes fitofisionomias do complexo vegetacional atlântico

Cited by 10 publications

References 45 publications

Weak relationships between leaf phenology and isohydric and anisohydric behavior in lowland wet tropical forest trees

Weak relationships between leaf phenology and isohydric and anisohydric behavior in lowland wet tropical forest trees

Wood Anatomy of Myrciaria, Neomitranthes, Plinia and Siphoneugena Species (Myrteae, Myrtaceae)

Anatomia ecológica da madeira de Rudgea viburnoides (Cham.) Benth. (Rubiaceae) em campo cerrado e rupestre

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