Expansão e mortalidade de ramos em espécies arbóreas do cerrado sensu stricto

Rossatto, Davi Rodrigo; Franco, Augusto C.

doi:10.1590/s0100-84042008000400016

Cited by 3 publications

(3 citation statements)

References 19 publications

(21 reference statements)

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“…Also, fire increased the speed of shoot expansion of evergreens. Rossato & Franco (2008), studying five evergreens from cerrado found shoot mean growth ranging from 0.23 to 1.38 cm per month. In our study, M. ligustroides and P. rotundifolia showed mean shoot growth range from 9 to 18 cm for month.…”

Section: Discussionmentioning

confidence: 99%

“…In the cerrado, there are few studies regarding plant architecture, and most of them concern shoot growth (Rossato & Franco 2008;Souza et al 2009a;b;Rossato 2009;Rossato et al 2009). Only four studies deal with whole crown architecture (Souza et al 2011;Santos et al 2012) or modular growth (Damascos et al 2005;Damascos 2008) of woody cerrado species.…”

Section: Introductionmentioning

confidence: 99%

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Evidence of the effects of fire on branching and leaf development in cerrado trees

2017

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We discuss evidence of eff ects of an accidental fi re on shoot growth and leaf development in six cerrado tree species with distinct leaf phenologies. Buds of all six species were marked before shoot and leaf emergence in the dry season. After fi re, leaf and shoot growth were monitored weekly and specifi c leaf area (SLA) was determined. Shoot order was determined in the growing season. Evergreens and semideciduous woody species had rapid leaf and shoot growth and decreased leaf life span (LLS) after fi re compared with published data for evergreens in cerrado areas without fi re. On the other hand, Kielmeyera variabilis, a deciduous species, showed intense branching and produced two orders of shoots in one growing season. Fires promote rapid leaf and shoot growth in evergreens owing to reserve accumulations that allow survivorship after disturbances. However, the leaves produced by evergreens after fi re had high SLAs and were discarded before the next rainy season (short LLS). Th is leaf cohort was produced with less carbon per leaf, and the decreased LLS prevented herbivory and water loss during the dry season. Fire is an important factor of cerrado environments, infl uencing leaf production and shoot architecture in cerrado trees.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evidence of the effects of fire on branching and leaf development in cerrado trees

2017

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“…(Franco 1998). For more details about the application of this methodology see Rossatto & Franco (2008).…”

Section: Introductionmentioning

confidence: 99%

Branch elongation and diameter growth were temporally dissociatedin "cerrado" tree species

Rossatto

2009

Hoehnea

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-(Branch elongation and diameter growth were temporally dissociated in "cerrado" tree species). Here is a communicating about time differences between branch and diameter growth in a tree community of ten species in Neotropical savanna ("cerrado") of Central Brazil. This work was conducted to study branch expansion and diameter growth in a period of one year between 2006 and 2007. Branch growth had begin in middle dry season and had the peak occurrence during the dry period in September, while diameter growth had begin in late dry season and peaked in the middle of wet season in December. The majority of species followed the same pattern. Branch growth did not have relation with rainfall, while diameter growth had a clear and positive relation with rainfall records. These results suggested that branch growth was not depend on rainfall but only on water status recover, while diameter growth probably depends strongly on water and to carbon assimilation that occurs after branch and leaf expansion. Key words: "cerrado", growth, rainfall, stem diameter growth RESUMO -(O crescimento diamétrico e dos ramos são temporalmente separados em espécies arbóreas do cerrado). São apresentadas aqui diferenças temporais entre o crescimento de ramos e o crescimento diamétrico em uma comunidade de 10 espécies arbóreas do cerrado no Brasil Central. O estudo foi conduzido para se avaliar o alongamento dos ramos e o crescimento diamétrico num período de um ano, entre 2006 e 2007. O crescimento dos ramos teve início durante a estação seca e teve seu pico de ocorrência ainda no período seco em setembro; enquanto o crescimento em diâmetro se iniciou no final da estação seca e teve um pico durante o período chuvoso, em dezembro. A maior parte das espécies apresentou o mesmo comportamento. O crescimento de ramos não teve relação com a pluviosidade, enquanto para o crescimento diamétrico houve uma clara e positiva relação com os registros de pluviosidade. Os resultados indicam que o crescimento em ramo não é dependente da pluviosidade, mas sim da recuperação do status hídrico interno da planta, enquanto o crescimento em diâmetro é dependente da presença da chuva e da assimilação de carbono, que ocorre apenas após a expansão dos ramos e produção de novas folhas.

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Is the dry season an important driver of phenology and growth for two Brazilian savanna tree species with contrasting leaf habits?

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Expansão e mortalidade de ramos em espécies arbóreas do cerrado sensu stricto

Cited by 3 publications

References 19 publications

Evidence of the effects of fire on branching and leaf development in cerrado trees

Evidence of the effects of fire on branching and leaf development in cerrado trees

Branch elongation and diameter growth were temporally dissociatedin "cerrado" tree species

Is the dry season an important driver of phenology and growth for two Brazilian savanna tree species with contrasting leaf habits?

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