Does disturbance affect bud bank size and belowground structures diversity in Brazilian subtropical grasslands?

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dc.contributor.authorFidelis, Alessandra
dc.contributor.authorAppezzato-da-Gloria, Beatriz
dc.contributor.authorPillar, Valerio D.
dc.contributor.authorPfadenhauer, Joerg
dc.contributor.institutionTech Univ Munich
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Federal do Rio Grande do Sul (UFRGS)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-12-03T13:11:02Z
dc.date.available2014-12-03T13:11:02Z
dc.date.issued2014-01-01
dc.description.abstractBrazilian Campos grasslands are ecosystems under high frequency of disturbance by grazing and fires. Absence of such disturbances may lead to shrub encroachment and loss of plant diversity. Vegetation regeneration after disturbance in these grasslands occurs mostly by resprouting from belowground structures. We analyzed the importance of bud bank and belowground bud bearing organs in Campos grasslands. We hypothesize that the longer the intervals between disturbances are, the smaller the size of the bud bank is. Additionally, diversity and frequency of belowground organs should also decrease in areas without disturbance for many years. We sampled 20 soil cores from areas under different types of disturbance: grazed, exclusion from disturbance for two, six, 15 and 30 years. Belowground biomass was sorted for different growth forms and types of bud bearing organs. We found a decrease in bud bank size with longer disturbance intervals. Forbs showed the most drastic decrease in bud bank size in the absence of disturbance, which indicates that they are very sensitive to changes in disturbance regimes. Xylopodia (woody gemmiferous belowground organs with hypocotyl-root origin) were typical for areas under influence of recurrent fires. The diversity of belowground bud bearing structures decreased in the absence of disturbance. Longer intervals between disturbance events, resulting in decrease of bud bank size and heterogeneity of belowground organs may lead to the decline and even disappearance of species that relay on resprouting from the bud bank upon disturbance. (C) 2014 Elsevier GmbH. All rights reserved.en
dc.description.affiliationTech Univ Munich, Chair Vegetat Ecol, D-85354 Freising Weihenstephan, Germany
dc.description.affiliationUniv Sao Paulo, Escola Super Agr Luiz de Queiroz, Lab Plant Anat, Piracicaba, Brazil
dc.description.affiliationUniv Fed Rio Grande do Sul, Lab Quantitat Ecol, Porto Alegre, RS, Brazil
dc.description.affiliationInstituto de Biociências, Departamento de Botânica, UNESP – Universidade Estadual Paulista, Av 24A, 1515, CEP 13506-900 Rio Claro, Brazil
dc.description.affiliationUnespInstituto de Biociências, Departamento de Botânica, UNESP – Universidade Estadual Paulista, Av 24A, 1515, CEP 13506-900 Rio Claro, Brazil
dc.description.sponsorshipGerman Research Foundation
dc.description.sponsorshipIdGerman Research FoundationDFG - PF 120/10-2
dc.format.extent110-116
dc.identifierhttp://dx.doi.org/10.1016/j.flora.2013.12.003
dc.identifier.citationFlora. Jena: Elsevier Gmbh, Urban & Fischer Verlag, v. 209, n. 2, p. 110-116, 2014.
dc.identifier.doi10.1016/j.flora.2013.12.003
dc.identifier.issn0367-2530
dc.identifier.urihttp://hdl.handle.net/11449/112767
dc.identifier.wosWOS:000334004900005
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofFlora
dc.relation.ispartofjcr1.365
dc.relation.ispartofsjr0,570
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectFireen
dc.subjectGrazingen
dc.subjectBrazilian Campos grasslandsen
dc.subjectResprouteren
dc.subjectXylopodiumen
dc.titleDoes disturbance affect bud bank size and belowground structures diversity in Brazilian subtropical grasslands?en
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.lattes9816649379632045[1]
unesp.author.orcid0000-0003-2989-6931[2]
unesp.author.orcid0000-0001-6408-2891[3]
unesp.author.orcid0000-0001-9545-2285[1]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Rio Claropt

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