Brazilian savanna (cerrado) area could be an important continental sink to CO2.

RONQUIM, C. C.

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Campo DC	Valor	Idioma
dc.contributor.author	RONQUIM, C. C.	pt_BR
dc.date.accessioned	2011-10-05T11:11:11Z	pt_BR
dc.date.accessioned	2011-10-05T11:11:11Z	pt_BR
dc.date.available	2011-10-05T11:11:11Z	pt_BR
dc.date.available	2011-10-05T11:11:11Z	pt_BR
dc.date.created	2011-10-05	pt_BR
dc.date.issued	2011	pt_BR
dc.identifier.citation	In: BRAZILIAN BIOENERGY SCIENCE AND TECHNOLOGY CONFERENCE 1., 2011, Campos do Jordão. Anais... São Paulo: FAPESP, 2011.	pt_BR
dc.identifier.uri	http://www.alice.cnptia.embrapa.br/alice/handle/doc/902506	pt_BR
dc.description	The responses facing specific constraints (e.g. shade, water stress, mineral deficiency) must be quantified in order to estimate the real capacity of each Cerrado species to act as a carbon sinker. Studying several levels of organization at same time it was possible to point out how phenotypic plasticity operates in five young Cerrado woody species, Copaifera langsdorffii Desf, Cybistax antisyphilitica (Mart) Mart., Tabebuia chrysotricha (Mart. ex DC) Mart., Anadenanthera falcata (Benth.) Speg., and Stryphnodendron adstringens (Mart.) Coville, submitted to different irradiance and under transitory increasing of atmosphere CO2 availability. The objective this work are verify the impact of irradiance availability on carbon assimilation and biomass alocation and verify if elevated CO2 concentration modifies responses of net photosynthesis of cerrado woody species growing under contrasting irradiance regimes. Under full irradiance, photosynthetic capacity, leaf area, and carboxilation efficiency increased at least two times in comparison to same species growing in shade (under Cerradão irradiance attenuation). As a consequence, biomass production was always greater (p<0.05) under full irradiance (FI) till 570 days after sowing (DAS). Photosynthetic capacity under 1600 ppm of CO2 was at least two times higher in comparison to regular CO2 availability irrespective the irradiance treatment. In addition to leaf physiological alterations, height, stem diameter and specific leaf mass values were also significantly lower in all species in shade. These physiological and morphological alterations could enable some Cerrado woody species to survive under Cerradão irradiance attenuation working as a carbon sinker even in the densest Cerrado physiognomy.	pt_BR
dc.language.iso	eng	eng
dc.rights	openAccess	eng
dc.subject	Leaf gas exchange	pt_BR
dc.subject	Irradiance	pt_BR
dc.subject	Biomass partitioning	pt_BR
dc.title	Brazilian savanna (cerrado) area could be an important continental sink to CO2.	pt_BR
dc.type	Resumo em anais e proceedings	pt_BR
dc.date.updated	2019-05-03T11:11:11Z	pt_BR
dc.format.extent2	1 p.	pt_BR
riaa.ainfo.id	902506	pt_BR
riaa.ainfo.lastupdate	2019-05-03 -03:00:00	pt_BR
dc.contributor.institution	CARLOS CESAR RONQUIM, CNPM.	pt_BR
Aparece nas coleções:	Resumo em anais de congresso (CNPM)

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