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| Registros recuperados: 12 | |
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| Galán Larrea, Rolando. |
| Para muchas especies arbóreas en áreas de clima cálido húmedo no existe información del crecimiento y su periodicidad, así como de su rendimiento maderable, lo cual impide un buen manejo de los bosques en gran parte del trópico. Por lo anterior, se estudió el crecimiento y su periodicidad en Cedrela odorata L., Tabebuia rosea (Bertol.) DC, T. donnell-smithii Rose y Cordia alliodora (Ruíz & Pav.) Oken. en una plantación de enriquecimiento de acahuales en el sur de Oaxaca, México. Para evaluar el crecimiento a nivel árbol se midieron los cambios en diámetro a través de bandas dendrometricas para 32 individuos de C. odorata, seis de T. rosea, siete de T. donnell-smithii y nueve de C. alliodora; además, se analizaron macroscópicamente secciones... |
| Tipo: Tesis |
Palavras-chave: Bandas dendrométricas; Características de la pendiente; Posición de copa; Anillos de crecimiento; Estacionalidad en la precipitación; Sistema de crecimiento y rendimiento; Maestría; Forestal; Dendrometer bands; Slope characteristics; Crown position; Growth rings; Rain seasonality; Growth and yield system. |
| Ano: 2007 |
URL: http://hdl.handle.net/10521/1570 |
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| Francisco,Talitha M.; Ambrósio,Angela Maria; Balbi,Thiago José; Zuliani,Marina S.; Okada,Edson K.; Gomes,Luiz C.. |
| Age and growth parameters of cachara Pseudoplatystoma reticulatum (Eigenmann & Eigenmann, 1889) (Siluriformes, Pimelodidae) (males and females) were estimated through the analysis of growth rings in spines of pectoral fins. Fish were collected from January to December 2007, in the area directly influenced by the Aproveitamento Múltiplo de Manso (APM Manso) and in the Cuiabá River (upper parts of the Pantanal). The maximum number of growth rings was seven for males, and eight, for females. The analysis of temporal variations in mean marginal increment showed that rings found in the spines were formed annually, in December. Growth rings were associated to spawning (in the study region from November to March) of the species. The growth curve in length... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Growth rings; Pectoral fins; Von Bertalanffy model; Ford-Walford. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212011000300004 |
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| Mattos, Patricia Póvoa de; Santos, Andreia Taborda dos; Rivera, Hugo; Oliveira, Yeda Maria Malheiros de; Rosot, Maria Augusta Doetzer; Garrastazu, Marilice Cordeiro. |
| Araucaria Forest is one of most threatened phyto-physiognomies in the Atlantic Forest domain,presenting great ecological-economical importance. Nevertheless, there are still lacks of knowledge concerning growth and dynamic of important species, as Araucaria angustifolia. The objective of this work was to recover the past growth of Araucaria angustifolia, native from Caçador, SC, Brazil, by measuring growth rings and to estimate the average periodic diametric increment. The growth rings were counted and measured, using a stereoscope microscope, in increment cores of 0.5 cm collected from 32 adult trees. The measurements were done with LINTAB measuring table, with 0.01 mm of precision. The samples sizes were irregular, varying from 4.2 to 20.2 cm long. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Growth rings; Araucaria Forest; Periodic increment.. |
| Ano: 2010 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/124 |
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| Mattos, Patricia Póvoa de; Santos, Andreia Taborda dos; Oliveira, Yeda Maria Malheiros de; Rosot, Maria Augusta Doetzer. |
| In the present work the dendrochronological potential of six species of the Araucaria Forest is analyzed. The trunks of 20 trees were collected in Candoi, State of Parana, Brazil, from an area that belongs toELEJOR, Centrais Elétricas do Rio Jordão, for the following species: Araucaria angustifolia, Clethra scabra, Cedrela lilloi, Ocotea porosa, Podocarpus lambertii and Sebastiania commersoniana (3 to 6, from each species). The trunks were sawed, and at breast height a sample was taken from the center of the board, from bark to bark, crossing the pith, for macroscopic analysis. These samples were dried and polished, making possible the recognition and measurement of growth rings The historical climatic data series were provided by SIMEPAR, the State... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Growth rings; Precipitation; Temperature; Forest dynamics; Atlantic Rain Forest Anéis de crescimento; Precipitação pluviométrica; Temperatura; Dinâmica de florestas; Mata Atlântica. |
| Ano: 2010 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/141 |
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| SOUZA,BRUNNA T.; ESTRADA,GUSTAVO C.D.; SOARES,MÁRIO L.G.; CALLADO,CÁTIA H.. |
| ABSTRACT The formation of annual growth rings has been confirmed for several mangrove species in the last decade, among which is the Rhizophora mangle. However, the record of annual rings for this species was made in a region with high hydric seasonality, a widely recognized induction factor of annual rings in tropical species. In this sense, the present study aimed to verify the occurrence of annual growth rings in R. mangle in the mangroves of Guaratiba (Rio de Janeiro, Southeastern Brazil), a region with low hydric seasonality. For this purpose, the crossdating technique was applied in ten trees collected with known age (seven years). The growth rings are characterized by alternating layers of low vessel density (earlywood) and high vessel density... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Growth rings; Dendrochronology; Mangrove; Dendroecology; Proxy. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000200517 |
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| Registros recuperados: 12 | |
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