Use este identificador para citar ou linkar para este item: https://repositorio.inpa.gov.br/handle/1/15836
Título: High proportion of smaller ranged hummingbird species coincides with ecological specialization across the Americas
Autor: 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
Palavras-chave: 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
Data do documento: 2016
Revista: Proceedings of the Royal Society B: Biological Sciences
É parte de: 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.
DOI: 10.1098/rspb.2015.2512
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