Reconstructing past ecological networks: the reconfiguration of seed-dispersal interactions after megafaunal extinction

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dc.contributor.authorPires, Mathias M.
dc.contributor.authorGaletti, Mauro [UNESP]
dc.contributor.authorDonatti, Camila I.
dc.contributor.authorPizo, Marco A. [UNESP]
dc.contributor.authorDirzo, Rodolfo
dc.contributor.authorGuimaraes, Paulo R.
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionStanford Univ
dc.date.accessioned2015-03-18T15:52:59Z
dc.date.available2015-03-18T15:52:59Z
dc.date.issued2014-08-01
dc.description.abstractThe late Quaternary megafaunal extinction impacted ecological communities worldwide, and affected key ecological processes such as seed dispersal. The traits of several species of large-seeded plants are thought to have evolved in response to interactions with extinct megafauna, but how these extinctions affected the organization of interactions in seed-dispersal systems is poorly understood. Here, we combined ecological and paleontological data and network analyses to investigate how the structure of a species-rich seed-dispersal network could have changed from the Pleistocene to the present and examine the possible consequences of such changes. Our results indicate that the seed-dispersal network was organized into modules across the different time periods but has been reconfigured in different ways over time. The episode of megafaunal extinction and the arrival of humans changed how seed dispersers were distributed among network modules. However, the recent introduction of livestock into the seed-dispersal system partially restored the original network organization by strengthening the modular configuration. Moreover, after megafaunal extinctions, introduced species and some smaller native mammals became key components for the structure of the seed-dispersal network. We hypothesize that such changes in network structure affected both animal and plant assemblages, potentially contributing to the shaping of modern ecological communities. The ongoing extinction of key large vertebrates will lead to a variety of context-dependent rearranged ecological networks, most certainly affecting ecological and evolutionary processes.en
dc.description.affiliationUniv Sao Paulo, Inst Biociencias, Dept Ecol, BR-05508900 Sao Paulo, Brazil
dc.description.affiliationUniv Estadual Paulista, Dept Ecol, BR-13506900 Rio Claro, SP, Brazil
dc.description.affiliationStanford Univ, Dept Biol, Stanford, CA 94305 USA
dc.description.affiliationUniv Estadual Paulista, Dept Zool, BR-13506900 Rio Claro, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Ecol, BR-13506900 Rio Claro, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Zool, BR-13506900 Rio Claro, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipStanford University
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipEarthwatch Institute
dc.description.sponsorshipConservation International
dc.description.sponsorshipIdFAPESP: 09/54422-8
dc.description.sponsorshipIdFAPESP: 04/00810-3
dc.description.sponsorshipIdFAPESP: 08/10154-7
dc.description.sponsorshipIdFAPESP: 09/54567-6
dc.format.extent1247-1256
dc.identifierhttp://dx.doi.org/10.1007/s00442-014-2971-1
dc.identifier.citationOecologia. New York: Springer, v. 175, n. 4, p. 1247-1256, 2014.
dc.identifier.doi10.1007/s00442-014-2971-1
dc.identifier.issn0029-8549
dc.identifier.lattes3431375174670630
dc.identifier.urihttp://hdl.handle.net/11449/116268
dc.identifier.wosWOS:000339893600019
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofOecologia
dc.relation.ispartofjcr3.127
dc.relation.ispartofsjr1,695
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectEcological networksen
dc.subjectFrugivoryen
dc.subjectModularityen
dc.subjectMutualismsen
dc.subjectPantanalen
dc.subjectRewildingen
dc.titleReconstructing past ecological networks: the reconfiguration of seed-dispersal interactions after megafaunal extinctionen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dcterms.rightsHolderSpringer
unesp.author.lattes3431375174670630
unesp.author.orcid0000-0002-8187-8696[2]
unesp.author.orcid0000-0003-2500-4748[1]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Rio Claropt

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Artigos - Ecologia - IBRC
Artigos - Zoologia - IBRC