Spatial variation in post-dispersal seed removal in an Atlantic forest: Effects of habitat, location and guilds of seed predators

Página do item simplificado
dc.contributor.authorChristianini, Alexander V. [UNESP]
dc.contributor.authorGaletti, Mauro [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-02-26T17:01:42Z
dc.date.accessioned2014-05-20T13:56:34Z
dc.date.available2014-02-26T17:01:42Z
dc.date.available2014-05-20T13:56:34Z
dc.date.issued2007-11-01
dc.description.abstractStudies of post-dispersal seed removal in the Neotropics have rarely examined the magnitude of seed removal by different types of granivores. The relative impact of invertebrates, small rodents, and birds on seed removal was investigated in a 2,178 ha Atlantic forest fragment in southeastern Brazil. We used popcorn kernels (Zea mays-Poaceae) to investigate seed removal in a series of selective exclosure treatments in a replicated, paired design experiment that included forest understory, gaps, and forest edge sites. We recorded the vegetation around the experimental seed stations in detail in order to evaluate the influence of microhabitat traits on seed removal. Vertebrate granivores (rodents and birds) were surveyed to determine whether granivore abundance was correlated with seed removal levels. Seed removal varied spatially and in unpredictable ways at the study site. Seed encounter and seed use varied with treatments, but not with habitat type. However, seed removal by invertebrates was negatively correlated with gap-related traits, which suggested an avoidance of large gaps by granivorous ants. The abundance of small mammals was remarkably low, but granivorous birds (tinamous and doves) were abundant at the study site. Birds were the main seed consumers in open treatments, but there was no correlation between local granivorous bird abundance and seed removal. These results emphasize the stochastic spatial pattern of seed removal, and, contrary to previous studies, highlight the importance of birds as seed predators in forest habitats. (c) 2007 Elsevier Masson SAS. All rights reserved.en
dc.description.affiliationUniv Estadual Paulista, Inst Biociencias, Dept Bot, Plant Phenol & Seed Dispersal Res Grp, BR-13506900 Rio Claro, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, Inst Biociencias, Dept Ecol,Lab Biol Conservacao, Plant Phenol & Seed Dispersal Res Grp, BR-13506900 Rio Claro, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Biociencias, Dept Bot, Plant Phenol & Seed Dispersal Res Grp, BR-13506900 Rio Claro, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Biociencias, Dept Ecol,Lab Biol Conservacao, Plant Phenol & Seed Dispersal Res Grp, BR-13506900 Rio Claro, SP, Brazil
dc.format.extent328-336
dc.identifierhttp://dx.doi.org/10.1016/j.actao.2007.06.004
dc.identifier.citationActa Oecologica-international Journal of Ecology. Paris: Gauthier-villars/editions Elsevier, v. 32, n. 3, p. 328-336, 2007.
dc.identifier.doi10.1016/j.actao.2007.06.004
dc.identifier.issn1146-609X
dc.identifier.lattes3431375174670630
dc.identifier.urihttp://hdl.handle.net/11449/20218
dc.identifier.wosWOS:000251686200009
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofActa Oecologica: International Journal of Ecology
dc.relation.ispartofjcr1.615
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectbirdspt
dc.subjectedge effectpt
dc.subjectgranivorypt
dc.subjecthabitat fragmentationpt
dc.subjectrodentspt
dc.subjectseed predationpt
dc.titleSpatial variation in post-dispersal seed removal in an Atlantic forest: Effects of habitat, location and guilds of seed predatorsen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.lattes3431375174670630
unesp.author.orcid0000-0002-1538-791X[1]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Rio Claropt

Arquivos

Licença do Pacote
Agora exibindo 1 - 1 de 1
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:

Coleções

Artigos - Botânica - IBRC
Artigos - Biologia - IBRC