Defaunation and changes in climate and fire frequency have synergistic effects on aboveground biomass loss in the brazilian savanna

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dc.contributor.authorMaciel, Everton A.
dc.contributor.authorMartins, Valeria F.
dc.contributor.authorde Paula, Mateus D.
dc.contributor.authorHuth, Andreas
dc.contributor.authorGuilherme, Frederico A.G.
dc.contributor.authorFischer, Rico
dc.contributor.authorGiles, André
dc.contributor.authorBarbosa, Reinaldo I.
dc.contributor.authorCavassan, Osmar [UNESP]
dc.contributor.authorMartins, Fernando R.
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.contributor.institutionHelmholtz Centre for Environmental Research – UFZ
dc.contributor.institutionSBiK-F – Senckenberg Biodiversity and Climate Research Centre Georg-Voigt-Straße 14-16
dc.contributor.institutionFederal University of Jataí – UFJ
dc.contributor.institutionNational Institute of Amazonian Research – INPA
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2022-05-01T06:02:36Z
dc.date.available2022-05-01T06:02:36Z
dc.date.issued2021-08-15
dc.description.abstractAs a result of anthropogenic pressure, three drives are expected to affect Brazilian savannas: an increase in the dry season, more frequent fire events, and defaunation. These drivers are a trigger for biodiversity loss and undermine the ecosystems services like carbon storage. Here our goal was to analyze how these drivers can affect the structure and dynamics of the savanna's tree species and how they impact the savanna's total estimating aboveground biomass (AGB). We analysed eight sites that comprise a physiognomic gradient from open savanna to savanna woodland. The species were classified by three traits: phenological strategies (deciduous or evergreen), fire resistance (resprouting or non-resprouting), and dispersal syndrome (animal or non-animal). Then, we modelled AGB loss in a dry season in the austral winter, a 2 °C increase in daily temperature, five fire events by decadal-series, and a defaunation scenario. Although climate change, change in fire frequency, and defaunation effects impact AGB separately, they also have a synergistic effect. This effect was observed in functional strategies and also in the total AGB of the community. In some cases, the total AGB loss exceeded 70%. The negative effects on performance were highest in species which were decidual, non-resprouting, and which employed animal dispersal for their seed. If different types of disturbances are not controlled in the near future, savanna communities will be dominated by evergreen, resprouters, and non-animal dispersed species, representing a steeply decline in the diversity of species and ecosystem functions.en
dc.description.affiliationDepartment of Plant Biology Institute of Biology University of Campinas – UNICAMP, P.O. Box 6109
dc.description.affiliationDepartment of Natural Sciences Maths and Education Centre for Agrarian Sciences Federal University of São Carlos (UFSCar), Rodovia Anhanguera - SP 330, km 174
dc.description.affiliationDepartment of Ecological Modelling Helmholtz Centre for Environmental Research – UFZ, Permoserstraße 15
dc.description.affiliationSBiK-F – Senckenberg Biodiversity and Climate Research Centre Georg-Voigt-Straße 14-16
dc.description.affiliationBiological Sciences Unit Federal University of Jataí – UFJ, BR 364, km 192
dc.description.affiliationDepartment of Environmental Dynamics National Institute of Amazonian Research – INPA
dc.description.affiliationDepartment of Biological Sciences Faculty of Sciences São Paulo State University – UNESP
dc.description.affiliationUnespDepartment of Biological Sciences Faculty of Sciences São Paulo State University – UNESP
dc.identifierhttp://dx.doi.org/10.1016/j.ecolmodel.2021.109628
dc.identifier.citationEcological Modelling, v. 454.
dc.identifier.doi10.1016/j.ecolmodel.2021.109628
dc.identifier.issn0304-3800
dc.identifier.scopus2-s2.0-85110493135
dc.identifier.urihttp://hdl.handle.net/11449/233276
dc.language.isoeng
dc.relation.ispartofEcological Modelling
dc.sourceScopus
dc.subjectBiodiversity loss
dc.subjectBiodiversity management
dc.subjectCarbon balance
dc.subjectCerrado
dc.subjectDisturbance
dc.subjectForest simulations
dc.titleDefaunation and changes in climate and fire frequency have synergistic effects on aboveground biomass loss in the brazilian savannaen
dc.typeArtigo
unesp.departmentCiências Biológicas - FCpt

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