|
|
|
|
| |
|
| |
|
|
| LUSK,CHRISTOPHER H.; LE-QUESNE,CARLOS. |
| The growth of Araucaria araucana, like that of many other conifers, is characterised by the production of a monopodial stem with branch whorls. However, the periodicity of whorl formation in this species has not been subjected to systematic study. We used growth ring counts to determine the frequency of whorl formation in sun- and shade-grown juvenile A. araucana in a montane forest in the Chilean coast range. Whorls were not annual in any of the 35 individuals studied, growth rings outnumbering whorls by a factor of 1.8 to 3.9. The mean interval between successive whorls was significantly shorter in sun-grown (2.1 yrs whorl -1) than in shade-grown trees (2.6 yrs whorl-1), suggesting a relationship with plant carbon balance. Mean distance between whorls... |
| Tipo: Journal article |
Palavras-chave: Araucariaceae; Conifers; Dendroecology; Tree growth; Tree rings. |
| Ano: 2000 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2000000300013 |
| |
|
|
| MARCON, A. K.; LONGHI-SANTOS, T.; GALVÃO, F.; MARTINS, K. G.; BOTOSSO, P. C.; BLUM, C. T.. |
| We examined the climatic response of Cedrela fissilis radial growth based on precipitation, air relative humidity, temperature and monthly thermal amplitude. It was intended to assess how the secondary growth of C. fissilis is influenced by the climatic variables and which one are the best growth predictors in Ombrophilous Mixed Forest, southern Brazil. Wood cores were processed using classical dendrochronology methodology. Principal Components Analysis, Generalized Linear Models and correlation were used to explore the relationship between radial growth and climate. Our results indicated that the best radial growth predictor is the temperature: the seasonal behavior, under well-watered conditions, seems to have a dominant effect on growth responses.... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Floresta com Araucaria; Dendrocronologia; Dendroecologia; Bioma e ecologia florestal; Dendroecology; Araucaria forest; Dendrochronology; Climate change. |
| Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1110648 |
| |
|
|
| LONGHI-SANTOS, T.; GALVÃO, F.; BOTOSSO, P. C.; MARTINS, K. G.. |
| 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 e premissas básicas para estudos dendrocronológicos, os discos foram secos, polidos e os anéis de crescimento identificados e demarcados, para a construção de séries cronológicas e sua correlação com variáveis climáticas/ambientais. O presente trabalho tem por objetivo verificar se: (i) Gymnanthes klotzschiana apresenta características potenciais para estudos dendroecológicos; (ii) a espécie responde a estímulos... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Gymnanthes klotzschiana; Dendroecologia; Anéis de crescimento; Respostas ambientais; Intervenções antrópicas; Planície de inundação; Dendroecology; Tree rings; Environmental responses; Anthropogenic disturbances; Floodplain. |
| Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1112641 |
| |
|
| |
|
|
| 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 |
| |
|
| |
|
|
|
