Please use this identifier to cite or link to this item: https://repositorio.inpa.gov.br/handle/1/17840
Full metadata record
DC FieldValueLanguage
dc.contributor.authorEmer, Carine-
dc.contributor.authorVenticinque, Eduardo Martins-
dc.contributor.authorFonseca, Carlos Roberto-
dc.date.accessioned2020-06-15T21:49:35Z-
dc.date.available2020-06-15T21:49:35Z-
dc.date.issued2013-
dc.identifier.urihttps://repositorio.inpa.gov.br/handle/1/17840-
dc.description.abstractMutualistic networks are critical to biological diversity maintenance; however, their structures and functionality may be threatened by a swiftly changing world. In the Amazon, the increasing number of dams poses a large threat to biological diversity because they greatly alter and fragment the surrounding landscape. Tight coevolutionary interactions typical of tropical forests, such as the ant-myrmecophyte mutualism, where the myrmecophyte plants provide domatia nesting space to their symbiotic ants, may be jeopardized by the landscape changes caused by dams. We analyzed 31 ant-myrmecophyte mutualistic networks in undisturbed and disturbed sites surrounding Balbina, the largest Central Amazonian dam. We tested how ant-myrmecophyte networks differ among dam-induced islands, lake edges, and undisturbed forests in terms of species richness, composition, structure, and robustness (number of species remaining in the network after partner extinctions). We also tested how landscape configuration in terms of area, isolation, shape, and neighborhood alters the structure of the ant-myrmecophyte networks on islands. Ant-myrmecophytic networks were highly compartmentalized in undisturbed forests, and the compartments had few strongly connected mutualistic partners. In contrast, networks at lake edges and on islands were not compartmentalized and were negatively affected by island area and isolation in terms of species richness, density, and composition. Habitat loss and fragmentation led to coextinction cascades that contributed to the elimination of entire ant-plant compartments. Furthermore, many myrmecophytic plants in disturbed sites lost their mutualistic ant partners or were colonized by opportunistic, nonspecialized ants. Robustness of ant-myrmecophyte networks on islands was lower than robustness near lake edges and in undisturbed forest and was particularly susceptible to the extinction of plants. Beyond the immediate habitat loss caused by the building of large dams in Amazonia, persistent edge effects and habitat fragmentation associated with dams had large negative effects on animal-plant mutualistic networks. © 2013 Society for Conservation Biology.en
dc.language.isoenpt_BR
dc.relation.ispartofVolume 27, Número 4, Pags. 763-773pt_BR
dc.rightsRestrito*
dc.subjectAnten
dc.subjectCompartmentalizationen
dc.subjectDamen
dc.subjectEcosystem Functionen
dc.subjectEdge Effecten
dc.subjectExtinctionen
dc.subjectHabitat Fragmentationen
dc.subjectHabitat Lossen
dc.subjectLandscape Changeen
dc.subjectMutualismen
dc.subjectMyrmecophyteen
dc.subjectNestednessen
dc.subjectPlant Insect Interactionen
dc.subjectSpecies Diversityen
dc.subjectSpecies Richnessen
dc.subjectTropical Foresten
dc.subjectAnidamientoen
dc.subjectAnimalsen
dc.subjectAnten
dc.subjectCambio De Hábitaten
dc.subjectCoextinciónen
dc.subjectCoextinctionen
dc.subjectCompartimentaciónen
dc.subjectCompartmentalizationen
dc.subjectDemographyen
dc.subjectEcosystemen
dc.subjectEdge Effecten
dc.subjectEfecto De Bordeen
dc.subjectEnvironmental Protectionen
dc.subjectHabitat Changeen
dc.subjectHabitat Lossen
dc.subjectInteracción De Especiesen
dc.subjectMirmecofitaen
dc.subjectMyrmecophyteen
dc.subjectNestednessen
dc.subjectPérdida De Hábitaten
dc.subjectPhysiologyen
dc.subjectPlanten
dc.subjectRiveren
dc.subjectSpecies Differenceen
dc.subjectSpecies Interactionen
dc.subjectStatistical Modelen
dc.subjectSymbiosisen
dc.subjectTreeen
dc.subjectAnidamientoen
dc.subjectCambio De Hábitaten
dc.subjectCoextinciónen
dc.subjectCoextinctionen
dc.subjectCompartimentaciónen
dc.subjectCompartmentalizationen
dc.subjectEdge Effecten
dc.subjectEfecto De Bordeen
dc.subjectHabitat Changeen
dc.subjectHabitat Lossen
dc.subjectInteracción De Especiesen
dc.subjectMirmecofitaen
dc.subjectMyrmecophyteen
dc.subjectNestednessen
dc.subjectPérdida De Hábitaten
dc.subjectSpecies Interactionen
dc.subjectAnimalen
dc.subjectAntsen
dc.subjectConservation Of Natural Resourcesen
dc.subjectDemographyen
dc.subjectEcosystemen
dc.subjectLinear Modelsen
dc.subjectPlantsen
dc.subjectRiversen
dc.subjectSpecies Specificityen
dc.subjectSymbiosisen
dc.subjectTreesen
dc.subjectAmazonasen
dc.subjectBalbina Reservoiren
dc.subjectAnimalsiaen
dc.subjectFormicidaeen
dc.titleEffects of dam-induced landscape fragmentation on amazonian ant-plant mutualistic networksen
dc.typeArtigopt_BR
dc.identifier.doi10.1111/cobi.12045-
dc.publisher.journalConservation Biologypt_BR
Appears in Collections:Artigos

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.