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dc.contributor.authorFidelis, Alessandra [UNESP]
dc.contributor.authorLyra, Maria Fernanda di Santi
dc.contributor.authorPivello, Vânia Regina
dc.date.accessioned2014-05-27T11:28:36Z
dc.date.available2014-05-27T11:28:36Z
dc.date.issued2013-03-01
dc.identifierhttp://dx.doi.org/10.1111/j.1654-1103.2012.01465.x
dc.identifier.citationJournal of Vegetation Science, v. 24, n. 2, p. 356-364, 2013.
dc.identifier.issn1100-9233
dc.identifier.issn1654-1103
dc.identifier.urihttp://hdl.handle.net/11449/74724
dc.description.abstractQuestions: Grasslands are usually neglected as potential carbon stocks, partially due to the lack of studies on biomass and carbon dynamics in tropical grasslands. What is the importance of Brazilian tropical wet grasslands as carbon sinks? Does fire frequency and season affect biomass and carbon allocation in Brazilian wet grasslands? Location: Wet grasslands, tropical savanna, Jalapão, Tocantins, northern Brazil. Methods: We determined biomass above- and below-ground, estimated carbon stocks in biennially burned plots (B2) and plots excluded from fire for 4 yr (B4). Moreover, we determined biomass in both rainy and dry seasons. Samples were 0.25 m × 0.25 m × 0.2 m (eight samples per treatment, applying a nested design, total of 48 samples). The biomass was classified in above-ground graminoids, forbs and dead matter, and below-ground roots and other below-ground organs. We used ANOVA to compare variables between treatments and seasons. Results: More than 40% of the total biomass and carbon stocks were located below-ground, mostly in roots. A high proportion of dead biomass (B4) was found in the above-ground material, probably due to low decomposition rates and consequent accumulation over the years. Although these grasslands do not experience water stress, we found significant evidence of resource re-allocation from below-ground organs to the above-ground biomass in the rainy season. Conclusions: We found more dead biomass in the rainy season, probably due to low decomposition rates, which can increase fire risk in these grasslands during the following dry season. These tropical wet grasslands stored high amounts of carbon (621 to 716 g C.m-2), mostly in the roots. Thus, policymakers should consider tropical grasslands as potential carbon stocks, since they are one of the most threatened and unprotected ecosystems in Brazil. © 2012 International Association for Vegetation Science.en
dc.format.extent356-364
dc.language.isoeng
dc.relation.ispartofJournal of Vegetation Science
dc.sourceScopus
dc.subjectAbove-ground biomass
dc.subjectBelow-ground organs
dc.subjectCarbon allocation
dc.subjectCarbon stock
dc.subjectFire
dc.subjectFunctional group
dc.subjectRoot:shoot ratio
dc.subjectSeasonality
dc.subjectTropical savanna
dc.subjectbiomass allocation
dc.subjectcarbon cycle
dc.subjectcarbon sink
dc.subjectcerrado
dc.subjectdecomposition
dc.subjectfire behavior
dc.subjectfunctional group
dc.subjectphytomass
dc.subjectpolicy making
dc.subjectroot-shoot ratio
dc.subjectsavanna
dc.subjectseasonality
dc.subjecttropical environment
dc.subjectwater stress
dc.subjectBrazil
dc.subjectJalapao
dc.subjectTocantins
dc.titleAbove- and below-ground biomass and carbon dynamics in Brazilian Cerrado wet grasslandsen
dc.typeArtigo
dcterms.licensehttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.description.affiliationDepartamento de Botânica Instituto de Biociências Universidade Estadual Paulista (UNESP), Av. 24-A, 1515, Rio Claro 13506-900
dc.description.affiliationDepartment of Ecology Universidade de São Paulo, Rua do Matão Trav 14, 321, São Paulo 05508900
dc.description.affiliationUnespDepartamento de Botânica Instituto de Biociências Universidade Estadual Paulista (UNESP), Av. 24-A, 1515, Rio Claro 13506-900
dc.identifier.doi10.1111/j.1654-1103.2012.01465.x
dc.identifier.wosWOS:000314049000014
dc.rights.accessRightsAcesso restrito
dc.identifier.scopus2-s2.0-84872894211
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Rio Claropt
unesp.author.lattes9816649379632045[1]
unesp.author.orcid0000-0001-8063-772X[3]
unesp.author.orcid0000-0001-9545-2285[1]
dc.relation.ispartofjcr2.658
dc.relation.ispartofsjr1,429
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