Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/327500
Type: Artigo
Title: The Integration Of Alien Plants In Mutualistic Plant-hummingbird Networks Across The Americas: The Importance Of Species Traits And Insularity
Author: Maruyama
Pietro K.; Vizentin-Bugoni
Jeferson; Sonne
Jesper; Martin Gonzalez
Ana M.; Schleuning
Matthias; Araujo
Andrea C.; Baquero
Andrea C.; Cardona
Juliana; Cardona
Paola; Cotton
Peter A.; Kohler
Glauco; Lara
Carlos; Malucelli
Tiago; Humberto Marin-Gomez
Oscar; Ollerton
Jeff; Rui
Ana M.; Timmermann
Allan; Varassin
Isabela G.; Zanata
Thais B.; Rahbek
Carsten; Sazima
Marlies; Dalsgaard
Bo
Abstract: Aim To investigate the role of alien plants in mutualistic plant-hummingbird networks, assessing the importance of species traits, floral abundance and insularity on alien plant integration. Location Mainland and insular Americas. Methods We used species-level network indices to assess the role of alien plants in 21 quantitative plant-hummingbird networks where alien plants occur. We then evaluated whether plant traits, including previous adaptations to bird pollination, and insularity predict these network roles. Additionally, for a subset of networks for which floral abundance data were available, we tested whether this relates to network roles. Finally, we tested the association between hummingbird traits and the probability of interaction with alien plants across the networks. Results Within the 21 networks, we identified 32 alien plant species and 352 native plant species. On average, alien plant species attracted more hummingbird species (i.e. aliens had a higher degree) and had a higher proportion of interactions across their hummingbird visitors than native plants (i.e. aliens had a higher species strength). At the same time, an average alien plant was visited more exclusively by certain hummingbird species (i.e. had a higher level of complementary specialization). Large alien plants and those occurring on islands had more evenly distributed interactions, thereby acting as connectors. Other evaluated plant traits and floral abundance were unimportant predictors of network roles. Short-billed hummingbirds had higher probability of including alien plants in their interactions than long-billed species. Main conclusions Once incorporated into plant-hummingbird networks, alien plants appear strongly integrated and, thus, may have a large influence on network dynamics. Plant traits and floral abundance were generally poor predictors of how well alien species are integrated. Short-billed hummingbirds, often characterized as functionally generalized pollinators, facilitate the integration of alien plants. Our results show that plant-hummingbird networks are open for invasion.
Subject: Abundance
Exotic Plants
Generalization
Invasion Biology
Network Roles
Ornithophily
Pollination
Specialization
Editor: Wiley-Blackwell
Hoboken
Rights: fechado
Identifier DOI: 10.1111/ddi.12434
Address: http://onlinelibrary.wiley.com/doi/10.1111/ddi.12434/full
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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