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dc.contributor.CRUESPUNIVERSIDADE DE ESTADUAL DE CAMPINASpt
dc.typeArtigo de periódicopt
dc.titleSeed Dispersal Anachronisms: Rethinking The Fruits Extinct Megafauna Ate.pt
dc.contributor.authorGuimarães, Paulo Rpt
dc.contributor.authorGaletti, Mauropt
dc.contributor.authorJordano, Pedropt
unicamp.authorPaulo R Guimarães, Departamento de Física da Matéria Condensada, Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas, Campinas, São Paulo, Brazil.pt
unicamp.author.externalMauro Galetti,pt
unicamp.author.externalPedro Jordano,pt
dc.subjectConservation Of Natural Resourcespt
dc.subjectEcosystempt
dc.subjectFossilspt
dc.subjectFruitpt
dc.subjectSeedspt
dc.subjectSouth Americapt
dc.description.abstractSome neotropical, fleshy-fruited plants have fruits structurally similar to paleotropical fruits dispersed by megafauna (mammals > 10(3) kg), yet these dispersers were extinct in South America 10-15 Kyr BP. Anachronic dispersal systems are best explained by interactions with extinct animals and show impaired dispersal resulting in altered seed dispersal dynamics. We introduce an operational definition of megafaunal fruits and perform a comparative analysis of 103 Neotropical fruit species fitting this dispersal mode. We define two megafaunal fruit types based on previous analyses of elephant fruits: fruits 4-10 cm in diameter with up to five large seeds, and fruits > 10 cm diameter with numerous small seeds. Megafaunal fruits are well represented in unrelated families such as Sapotaceae, Fabaceae, Solanaceae, Apocynaceae, Malvaceae, Caryocaraceae, and Arecaceae and combine an overbuilt design (large fruit mass and size) with either a single or few (< 3 seeds) extremely large seeds or many small seeds (usually > 100 seeds). Within-family and within-genus contrasts between megafaunal and non-megafaunal groups of species indicate a marked difference in fruit diameter and fruit mass but less so for individual seed mass, with a significant trend for megafaunal fruits to have larger seeds and seediness. Megafaunal fruits allow plants to circumvent the trade-off between seed size and dispersal by relying on frugivores able to disperse enormous seed loads over long-distances. Present-day seed dispersal by scatter-hoarding rodents, introduced livestock, runoff, flooding, gravity, and human-mediated dispersal allowed survival of megafauna-dependent fruit species after extinction of the major seed dispersers. Megafauna extinction had several potential consequences, such as a scale shift reducing the seed dispersal distances, increasingly clumped spatial patterns, reduced geographic ranges and limited genetic variation and increased among-population structuring. These effects could be extended to other plant species dispersed by large vertebrates in present-day, defaunated communities.en
dc.relation.ispartofPlos Oneen
dc.relation.ispartofabbreviationPLoS ONEpt
dc.date.issued2008pt
dc.identifier.citationPlos One. v. 3, n. 3, p. e1745, 2008.pt
dc.language.isoengpt
dc.description.volume3pt
dc.description.initialpagee1745pt
dc.rightsabertopt
dc.rights.holderpt
dc.sourcePubMedpt
dc.identifier.issn1932-6203pt
dc.identifier.doi10.1371/journal.pone.0001745pt
dc.identifier.urlhttp://www.ncbi.nlm.nih.gov/pubmed/18320062en
dc.date.available2015-11-27T13:12:33Z-
dc.date.accessioned2015-11-27T13:12:33Z-
dc.description.provenanceMade available in DSpace on 2015-11-27T13:12:33Z (GMT). No. of bitstreams: 1 pmed_18320062.pdf: 468536 bytes, checksum: a59f48f4287a9d4c0c3a82015a7b4d61 (MD5) Previous issue date: 2008en
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/197694-
dc.identifier.idPubmed18320062pt
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