Impact of Grazing Intensity and Seasons on Greenhouse Gas Emissions in Tropical Grassland

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dc.contributor.authorCardoso, Abmael da Silva [UNESP]
dc.contributor.authorBrito, Liziane de Figueiredo [UNESP]
dc.contributor.authorJanusckiewicz, Estella Rosseto [UNESP]
dc.contributor.authorMorgado, Eliane da Silva
dc.contributor.authorBarbero, Rondineli Pavezzi [UNESP]
dc.contributor.authorKoscheck, Jefferson Fabiano Werner [UNESP]
dc.contributor.authorReis, Ricardo Andrade [UNESP]
dc.contributor.authorRuggieri, Ana Cláudia [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUberlandia Federal University
dc.date.accessioned2018-12-11T17:08:08Z
dc.date.available2018-12-11T17:08:08Z
dc.date.issued2017-06-01
dc.description.abstractGreenhouse gases (GHG) can be affected by grazing intensity, soil, and climate variables. This study aimed at assessing GHG emissions from a tropical pasture of Brazil to evaluate (i) how the grazing intensity affects the magnitude of GHG emissions; (ii) how season influences GHG production and consumption; and (iii) what are the key driving variables associated with GHG emissions. We measured under field conditions, during two years in a palisade-grass pasture managed with 3 grazing intensities: heavy (15 cm height), moderate (25 cm height), and light (35 cm height) N2O, CH4 and CO2 fluxes using static closed chambers and chromatographic quantification. The greater emissions occurred in the summer and the lower in the winter. N2O, CH4, and CO2 fluxes varied according to the season and were correlated with pasture grazing intensity, temperature, precipitation, % WFPS (water-filled pores space), and soil inorganic N. The explanatory variables differ according to the gas and season. Grazing intensity had a negative linear effect on annual cumulative N2O emissions and a positive linear effect on annual cumulative CO2 emissions. Grazing intensity, season, and year affected N2O, CH4, and CO2 emissions. Tropical grassland can be a large sink of N2O and CH4. GHG emissions were explained for different key driving variables according to the season.en
dc.description.affiliationDepartamento de Zootecnia Faculdade de Ciências Agrárias e Veterinárias UNESP – Univ Estadual Paulista
dc.description.affiliationUberlandia Federal University, Rua João Naves de Ávila 2121, Santa Mônica
dc.description.affiliationUniversidade Estadual Paulista Julio de Mesquita Filho Via de Acesso Prof Paulo Donato Castellane UNESP
dc.description.affiliationUnespDepartamento de Zootecnia Faculdade de Ciências Agrárias e Veterinárias UNESP – Univ Estadual Paulista
dc.description.affiliationUnespUniversidade Estadual Paulista Julio de Mesquita Filho Via de Acesso Prof Paulo Donato Castellane UNESP
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdFAPESP: 2011/00060-8
dc.description.sponsorshipIdFAPESP: 2012/04605-1
dc.description.sponsorshipIdFAPESP: 2012/06718-8
dc.description.sponsorshipIdFAPESP: 2012/14956-6
dc.format.extent845-859
dc.identifierhttp://dx.doi.org/10.1007/s10021-016-0065-0
dc.identifier.citationEcosystems, v. 20, n. 4, p. 845-859, 2017.
dc.identifier.doi10.1007/s10021-016-0065-0
dc.identifier.file2-s2.0-85001555197.pdf
dc.identifier.issn1435-0629
dc.identifier.issn1432-9840
dc.identifier.scopus2-s2.0-85001555197
dc.identifier.urihttp://hdl.handle.net/11449/173872
dc.language.isoeng
dc.relation.ispartofEcosystems
dc.relation.ispartofsjr2,081
dc.relation.ispartofsjr2,081
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectCH4 from grassland soil
dc.subjectgrassland management
dc.subjectgrazing height
dc.subjectnitrous oxide
dc.subjectsoil respiration
dc.subjectwater-filled pore space
dc.titleImpact of Grazing Intensity and Seasons on Greenhouse Gas Emissions in Tropical Grasslanden
dc.typeArtigo
unesp.author.lattes6555511233950866[8]
unesp.author.orcid0000-0002-6051-9635[1]
unesp.author.orcid0000-0002-1577-395X[5]
unesp.author.orcid0000-0002-9646-8489[8]
unesp.departmentZootecnia - FCAVpt

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