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Cambial activity in dry and rainy season on branches from woody species growing in Brazilian CerradoAuthor(s): Carmen R. Marcati; Silvia R. Machado; Diego Sotto Podadera; Natalia O. Totti de Lara; Fabio Bosio; Alex C. Wiedenhoeft
Source: Flora - Morphology, Distribution, Functional Ecology of Plants
Publication Series: Scientific Journal (JRNL)
Station: Forest Products Laboratory
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DescriptionSeasonal cambial activity was investigated in one- to three-year-old branch modules (branch constructional units) of ten woody species from cerrado sensu stricto, a savanna-like ecosystem, of southernBrazil. Relationships between cambial activity and environmental factors (precipitation, temperature,day length) and leaf production were tested using generalized linear mixed model. Regardless the planthabit and leaf shedding patterns, cambial activity (about 5 months) corresponded to the core of the rainyseason (when at least 66% of the annual precipitation had been reached), even though there was somedelay or advance in the timing of cambial activity depending on the branch age or species. Cambial activ-ity began in the dry season and ceased before the end of rainy season. Although cambial activity has beenpositively correlated with day length, precipitation, temperature, and budding for all species, day length,among the assessed factors, seems to be the best predictor of onset and cessation of cambial activity inthe branch modules of cerrado species.
CitationMarcati, Carmen R.; Machado, Silvia R.; Podadera, Diego Sotto; Lara, Natalia O. Totti de; Bosio, Fabio; Wiedenhoeft, Alex C. 2016. Cambial activity in dry and rainy season on branches from woody species growing in Brazilian Cerrado. Flora - Morphology, Distribution, Functional Ecology of Plants. 223: 1-10.
KeywordsBudding, Cambium, Savanna-like ecosystem, Photoperiod, Precipitation, Temperature
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- Plant- and stand-level variation in biophysical and physiological traits along tree density gradients in the Cerrado
- Leaf functional traits of Neotropical savanna trees in relation to seasonal water deficit.
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