Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/41315
DC FieldValueLanguage
dc.contributor.authorHeleno, Ruben-
dc.contributor.authorOlesen, J. M.-
dc.contributor.authorNogales, M.-
dc.contributor.authorVargas, P.-
dc.contributor.authorTraveset, A.-
dc.date.accessioned2017-05-11T22:10:06Z-
dc.date.available2017-05-11T22:10:06Z-
dc.date.issued2012-
dc.identifier10.1098/rspb.2012.2112-
dc.identifier.urihttp://hdl.handle.net/10316/41315-
dc.description.abstractAlien plants are a growing threat to the Galápagos unique biota. We evaluated the impact of alien plants on eight seed dispersal networks from two islands of the archipelago. Nearly 10 000 intact seeds from 58 species were recovered from the droppings of 18 bird and reptile dispersers. The most dispersed invaders were Lantana camara, Rubus niveus and Psidium guajava, the latter two likely benefiting from an asynchronous fruit production with most native plants, which facilitate their consumption and spread. Lava lizards dispersed the seeds of 27 species, being the most important dispersers, followed by small ground finch, two mockingbirds, the giant tortoise and two insectivorous birds. Most animals dispersed alien seeds, but these formed a relatively small proportion of the interactions. Nevertheless, the integration of aliens was higher in the island that has been invaded for longest, suggesting a time-lag between alien plant introductions and their impacts on seed dispersal networks. Alien plants become more specialized with advancing invasion, favouring more simplified plant and disperser communities. However, only habitat type significantly affected the overall network structure. Alien plants were dispersed via two pathways: dry-fruited plants were preferentially dispersed by finches, while fleshy fruited species were mostly dispersed by other birds and reptiles.por
dc.language.isoengpor
dc.rightsopenAccesspor
dc.subjectAnimalspor
dc.subjectBirdspor
dc.subjectDietpor
dc.subjectEcuadorpor
dc.subjectFruitpor
dc.subjectLinear Modelspor
dc.subjectModels, Biologicalpor
dc.subjectPopulation Dynamicspor
dc.subjectReptilespor
dc.subjectSeasonspor
dc.subjectFood Chainpor
dc.subjectFood Preferencespor
dc.subjectIntroduced Speciespor
dc.subjectSeed Dispersalpor
dc.titleSeed dispersal networks in the Galapagos and the consequences of alien plant invasionspor
dc.typearticle-
degois.publication.firstPage20122112por
degois.publication.lastPage20122112por
degois.publication.issue1750por
degois.publication.titleProceedings of the Royal Society B: Biological Sciencespor
dc.peerreviewedyespor
dc.identifier.doi10.1098/rspb.2012.2112por
degois.publication.volume280por
item.fulltextCom Texto completo-
item.grantfulltextopen-
item.languageiso639-1en-
crisitem.author.deptCentre for Functional Ecology-
crisitem.author.researchunitCentre for Functional Ecology-
crisitem.author.orcid0000-0002-4808-4907-
Appears in Collections:I&D CFE - Artigos em Revistas Internacionais
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