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Seed survival and dispersal of an endemic Atlantic forest palm: the combined effects of defaunation and forest fragmentation

dc.contributor.authorGaletti, M.
dc.contributor.authorDonatti, C. I.
dc.contributor.authorPires, A. S.
dc.contributor.authorGuimaraes, P. R.
dc.contributor.authorJordano, P.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionIBC
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.contributor.institutionEstac Biol Donana
dc.date.accessioned2014-05-20T13:54:35Z
dc.date.available2014-05-20T13:54:35Z
dc.date.issued2006-05-01
dc.description.abstractAbout 45 palm species occur in the Atlantic forest of Brazil, and most of them are affected by loss of seed dispersers resulting from forest fragmentation and hunting. Here we report the effects of habitat loss and defaunation on the seed dispersal system of an endemic palm, Astrocaryum aculeatissimum. We evaluated seed removal, insect and rodent seed predation, and scatter-hoarding in nine sites, ranging from 19 ha to 79 000 ha. We report the seedling, juvenile and adult palm densities in this range of sites. Endocarps remaining beneath the parent palm had a higher probability of being preyed upon by insects in small, mostly fragmented and more defaunated sites. The frequency of successful seed removal, scatter-hoarding and consumption by rodents increased in the larger, less defaunated sites. Successful removal and dispersal collapsed in small (< 1000 ha), highly defaunated sites and frequently resulted in low densities of both seedlings and juveniles. Our results indicate that a large fraction of Atlantic forest palms that rely on scatter-hoarding rodents may become regionally extinct due to forest fragmentation and defaunation. Current management practices including palm extraction and hunting pressure have a lasting effect on Atlantic forest palm regeneration by severely limiting successful recruitment of prereproductive individuals.(c) 2006 the Linnean Society of London.en
dc.description.affiliationUniv Estadual Paulista, Lab Biol Conservacao, Grp Fenol & Dispersao Sementes, Dept Ecol, BR-13506900 Rio Claro, SP, Brazil
dc.description.affiliationIBC, Rio Claro, SP, Brazil
dc.description.affiliationUSP, ESALQ, BR-13418900 Piracicaba, SP, Brazil
dc.description.affiliationUniv Estadual Campinas, Programa Posgrad Ecol, Inst Biol, BR-13083970 Campinas, SP, Brazil
dc.description.affiliationEstac Biol Donana, CSIC, Integrat Ecol Grp, E-41013 Seville, Spain
dc.description.affiliationUnespUniv Estadual Paulista, Lab Biol Conservacao, Grp Fenol & Dispersao Sementes, Dept Ecol, BR-13506900 Rio Claro, SP, Brazil
dc.format.extent141-149
dc.identifierhttp://dx.doi.org/10.1111/j.1095-8339.2006.00529.x
dc.identifier.citationBotanical Journal of the Linnean Society. Oxford: Blackwell Publishing, v. 151, n. 1, p. 141-149, 2006.
dc.identifier.doi10.1111/j.1095-8339.2006.00529.x
dc.identifier.issn0024-4074
dc.identifier.urihttp://hdl.handle.net/11449/19526
dc.identifier.wosWOS:000237260100011
dc.language.isoeng
dc.publisherBlackwell Publishing
dc.relation.ispartofBotanical Journal of the Linnean Society
dc.relation.ispartofjcr3.124
dc.relation.ispartofsjr1,352
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectAstrocaryumpt
dc.subjectcachingpt
dc.subjectDasyproctapt
dc.subjectProechymispt
dc.subjectscatter-hoardingpt
dc.subjectSciuruspt
dc.subjectseed predationpt
dc.titleSeed survival and dispersal of an endemic Atlantic forest palm: the combined effects of defaunation and forest fragmentationen
dc.typeArtigo
dcterms.licensehttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dcterms.rightsHolderBlackwell Publishing
dspace.entity.typePublication
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Biociências, Rio Claropt
unesp.departmentBiologia - IBpt

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