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https://repositorio.inpa.gov.br/handle/1/15836
Title: | High proportion of smaller ranged hummingbird species coincides with ecological specialization across the Americas |
Authors: | Sonne, Jesper Martín González, Ana M. Maruyama, Pietro Kiyoshi Sandel, Brody S. Vizentin-Bugoni, Jeferson Schleuning, Matthias Abrahamczyk, Stefan Alarcón, Ruben Araujo, Andréa Cardoso de Araújo, Francielle Paulina Azevedo, Severino Mendes de Baquero, Andrea C. COTTON, PETER A. Ingversen, Tanja Toftemark Kohler, Glauco Lara, Carlos Las-Casas, Flor Maria Guedes Machado, Adriana Oliveira Machado, Caio Graco Maglianesi, María Alejandra Moura, Alan Cerqueira Nogués-Bravo, David Oliveira, Genilda M. Oliveira, Paulo E. Ornelas, J. F. Rodrigues, Licléia da Cruz Rosero-Lasprilla, Liliana Rui, Ana Maria Sazima, Marlies And I. Timmermann, Allan Varassin, Isabela Galarda Wang, Zhiheng Watts, Stella Fjeldsã, Jon Svenning, Jens Christian Rahbek, Carsten Dalsgaard, Bo |
Keywords: | Biogeography Bird Climate Conditions Coexistence Community Ecology Environmental Gradient Interspecific Interaction Macroecology Network Analysis Niche Quaternary Range Size Specialization United States Trochilidae Angiosperm Animals Animals Dispersal Bird Central America Climate Ecosystem North America Physiology South America Symbiosis Angiosperms Animals Distribution Animal Birds Central America Climate Ecosystem North America South America Symbiosis |
Issue Date: | 2016 |
metadata.dc.publisher.journal: | Proceedings of the Royal Society B: Biological Sciences |
metadata.dc.relation.ispartof: | Volume 283, Número 1824 |
Abstract: | Ecological communities that experience stable climate conditions have been speculated to preserve more specialized interspecific associations and have higher proportions of smaller ranged species (SRS). Thus, areas with disproportionally large numbers of SRS are expected to coincide geographically with a high degree of community-level ecological specialization, but this suggestion remains poorly supported with empirical evidence. Here, we analysed data for hummingbird resource specialization, range size, contemporary climate, and Late Quaternary climate stability for 46 hummingbird–plant mutualistic networks distributed across the Americas, representing 130 hummingbird species (ca 40% of all hummingbird species). We demonstrate a positive relationship between the proportion of SRS of hummingbirds and community-level specialization, i.e. the division of the floral niche among coexisting hummingbird species. This relationship remained strong even when accounting for climate, furthermore, the effect of SRS on specialization was far stronger than the effect of specialization on SRS, suggesting that climate largely influences specialization through species’ range-size dynamics. Irrespective of the exact mechanism involved, our results indicate that communities consisting of higher proportions of SRS may be vulnerable to disturbance not only because of their small geographical ranges, but also because of their high degree of specialization. © 2016 The Author(s) Published by the Royal Society. All rights reserved. |
metadata.dc.identifier.doi: | 10.1098/rspb.2015.2512 |
Appears in Collections: | Artigos |
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