Tree Rings
Mostrando 1-12 de 33 artigos, teses e dissertações.
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1. Climatic signal in a radial growth of Canadian and Maximovich poplars in south-western Poland
ABSTRACT: The main goal set by researchers in this article was to gather knowledge on the structure of the basic biometric features of tree-rings of two species of poplars, belonging to different sections of Aegeiros – Populus xcanadensis and Tacamahaca – Populus maximowiczii, and to define and understand the correlation between weather and annual increm
Sci. agric. (Piracicaba, Braz.). Publicado em: 20/12/2019
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2. Dendroecologia de Gymnanthes klotzschiana Müll. Arg. em um remanescente de Floresta Ombrófila Mista Aluvial no Sul do Brasil
Resumo Em um remanescente de Floresta Ombrófila Mista Aluvial, foram abatidas 56 árvores adultas de Gymnanthes klotzschiana, árvore típica e representativa desta formação e popularmente conhecida como branquilho, às margens do rio Barigui, em Araucária - PR, o qual teve o curso de seu leito retificado na década de 1960. Considerando-se as técnicas
Ciênc. Florest.. Publicado em: 02/12/2019
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3. Diametric Growth of Tree Species in the Atlantic Forest, Paraná, Brazil
Abstract: Management of remnants in Atlantic Forest is an alternative for their conservation, however, information on the growth and ecology of those species is lacking. This study aimed to describe diametric growth of Balfourodendron riedelianum, Cordia trichotoma and Ocotea diospyrifolia based on its growth rings and to verify the relationship between this
An. Acad. Bras. Ciênc.. Publicado em: 11/11/2019
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4. Assessment of the dendrochronological potential of Licaria bahiana Kurz, an endemic laurel of lowland Atlantic forests in Brazil
ABSTRACT The Atlantic Forest of southeastern Brazil has been considered to have the highest number of tree species per hectare in the world. Assessing the influence of climate on tropical tree species is a priority in the face of ongoing climate change, and for which dendrochronological studies have been important. We address the dendrochronological potentia
Acta Bot. Bras.. Publicado em: 12/09/2019
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5. Fire records in tree rings of Moquiniastrum polymorphum: potential for reconstructing fire history in the Brazilian Atlantic Forest
ABSTRACT Fire disturbance affects the composition, structure and dynamics of vegetation. Historical records of fire events exist in some places, but they are generally limited in temporal and spatial extent. Tree-ring research is a useful tool for fire history reconstruction and can contribute important long-term ecological data. We tested the hypotheses tha
Acta Bot. Bras.. Publicado em: 29/11/2018
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6. Experimental exploratory study of failure modes in models of wooden rectangular beams of Hymenae spp
ABSTRACT According to the study of mechanical properties, wood is an elastic or elastoplastic material that presents different structural behaviour when tensioned or compressed. From the viewpoint of elasticity, wood is considered anisotropic, or rather it is a material with elastic properties that vary with the direction considered. During tree growth, the
Matéria (Rio J.). Publicado em: 05/03/2018
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7. Annual tree rings in Piptadenia gonoacantha (Mart.) J.F.Macbr. in a restoration experiment in the Atlantic Forest: potential for dendroecological research
ABSTRACT The tree Piptadenia gonoachantha is widely used in forestry and in forest restoration projects, which require methods for evaluating tree growth. Long-term studies are necessary to determine patterns and detect changes in species growth rhythms. Tree ring analysis provides a precise method for determining age and documenting long-term growth trends
Acta Bot. Bras.. Publicado em: 14/07/2016
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8. Dendrocronologia e anatomia funcional do xilema ativo de Podocarpus lambertii Klotzch ex Endl. / Dendrochronology and functional anatomy of the active xylem of Podocarpus lambertii Klotzch ex Endl.
A dendrocronologia constitui-se no estudo dos anéis de crescimento e sua sequencia cronológica, que pode trazer importantes informações a respeito do crescimento dos vegetais lenhosos e seu ambiente. No presente trabalho foram analisados os anéis de crescimento de Podocarpus lambertii em uma população situada em sua zona limite de distribuição, no m
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/04/2012
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9. Curvas de isopropriedades da madeira em árvores de Pinus caribaea var. bahamensis / Curves of isoproperties in Wood from Pinus caribaea var. bahamensis trees
The objective of this research has been to determine qualitative parameters of Pinus caribaea var. bahamensis wood in three diameter classes with a common base in 1969 and 1992 plantations from Floresta Estadual from the Manduri Instituto Florestal SP. three trees per class were collected and 3-m high logs were removed. From each log the main plank was remov
Publicado em: 2010
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10. Dendrocronologia de árvores de mogno, Swietenia macrophylla King., Meliaceae, ocorrentes na floresta tropical Amazônica do Departamento de Madre de Dios, Peru / Dendrochronology of the mahogany trees, Swietenia macrophylla King., Meliaceae, occurring in the Amazon Rainforest of the Department of Madre de Dios, Peru
Studies in phenology and wood anatomy show a cyclical development and growth related to climatic conditions (temperature and rainfall) and site characteristics (competence, light, water storage in the soil, etc.), the sensibility to these factors results, for some tree species, in seasonality of cambium activity and formation of annual tree-rings. This chara
Publicado em: 2009
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11. Caracterização da estrutura anatômica do lenho, dos anéis de crescimento e dos canais de resina de árvores de Pinus caribaea var. hondurensis Barr. et Golf. / Characterization of the anatomical structure of the wood, the growth rings and the resin ducts in Pinus caribaea var. hondurensis Barr. et Golf.
The research on resin tapping trees with pine species have shown the effect of factors that affect the production and quality of resin, related with the species, genetic variability, growth rate, age, forest management, etc.. The gum-resin extraction practices, the concentration, frequency of application of chemical stimulants, the time of year that panels a
Publicado em: 2009
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12. Emprego da fluorescência de raios X por dispersão de energia para o mapeamento de troncos de árvores em Campinas, São Paulo
Dendrochemistry is based on the determination of elements retained in tree rings, which can be useful to characterize environmental occurrences. This work shows elemental mappings obtained by EDXRF of the cross section of a tree stem. The tree is originated from a polluted area in Campinas, São Paulo. Some profiles, as the sulfur one, show variations that c
Química Nova. Publicado em: 2009