Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/41325
Title: | Bird-flower visitation networks in the Galápagos unveil a widespread interaction release | Authors: | Traveset, Anna Olesen, Jens M Nogales, Manuel Vargas, Pablo Jaramillo, Patricia Antolín, Elena Trigo, María Mar Heleno, Ruben |
Keywords: | Animals; Biodiversity; Birds; Competitive Behavior; Ecuador; Feeding Behavior; Flowers; Food Chain; Insects; Introduced Species; Plant Dispersal; Plants; Pollination | Issue Date: | 10-Mar-2015 | Serial title, monograph or event: | Nature communications | Volume: | 6 | Abstract: | Owing to food scarcity and to the high densities that vertebrates often reach on islands, typical insect- and seed-eaters widen their feeding niche and interact with a greater fraction of species than their mainland counterparts. This phenomenon, coined here 'interaction release', has been previously reported for single species but never for an entire community. During 4 years, we gathered data on bird-flower visitation on 12 Galápagos islands. We show that all sampled land birds exploit floral resources and act as potential pollinators across the entire archipelago, in all major habitats and all year round. Although species and link composition varies among islands, strong interaction release takes place on all islands, making their bird-flower network highly generalized. Interaction release is crucial to the survival of native birds but simultaneously threatens the unique biodiversity of this archipelago, as the birds also visit invading plants, likely facilitating their integration into pristine native communities. | URI: | https://hdl.handle.net/10316/41325 | DOI: | 10.1038/ncomms7376 10.1038/ncomms7376 |
Rights: | openAccess |
Appears in Collections: | I&D CFE - Artigos em Revistas Internacionais |
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File | Description | Size | Format | |
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Traveset et al 2015 Nature Comm. - Bird-flower visitation networks in the Galápagos unveil a widespread interaction release.pdf | 1.24 MB | Adobe PDF | View/Open |
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