Global patterns of interaction specialization in bird-flower networks

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

DOI

  • Thais B. Zanata, University of Copenhagen
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  • Bo Dalsgaard, University of Copenhagen, Nat Hist Museum Denmark, Ctr Excellence GeoGenet
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  • Fernando C. Passos, Universidade Federal do Parana
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  • Peter A. Cotton, Plymouth University
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  • James J. Roper, Centro Universitario Vila Velha
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  • Pietro K. Maruyama, Universidade de Sao Paulo
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  • Erich Fischer, Univ Fed Mato Grosso, Universidade Federal de Mato Grosso do Sul, Inst Biociencias, Dept Biol & Zool
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  • Matthias Schleuning, Senckenberg Gesellschaft fur Naturforschung (SGN)
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  • Ana M. Martin Gonzalez, Pacific Ecoinformat & Computat Ecol Lab
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  • Jeferson Vizentin-Bugoni, University of Illinois at Urbana-Champaign
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  • Donald C. Franklin, Charles Darwin Univ, Charles Darwin University, RIEL
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  • Stefan Abrahamczyk, Functional Genomics Center Zürich, University of Zürich
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  • Ruben Alarcon, Calif State Univ Fullerton, California State University Fullerton, California State University System, Dept Biol Sci
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  • Andrea C. Araujo, Univ Fed Mato Grosso, Universidade Federal de Mato Grosso do Sul, Inst Biociencias, Dept Biol & Zool
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  • Francielle P. Araujo, Universidade Estadual do Rio Grande do Sul (UERGS)
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  • Severino M. de Azevedo-Junior, Universidade Federal Rural de Pernambuco (UFRPE)
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  • Andrea C. Baquero, University of Copenhagen
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  • Katrin Boehning-Gaese, Goethe University Frankfurt
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  • Daniel W. Carstensen, University of Copenhagen, Nat Hist Museum Denmark, Ctr Excellence GeoGenet
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  • Henrique Chupil, Inst Pesquisas Cananeia
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  • Aline G. Coelho, Universidade Estadual de Feira de Santana
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  • Rogerio R. Faria, Univ Fed Mato Grosso, Universidade Federal de Mato Grosso do Sul, Inst Biociencias, Dept Biol & Zool
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  • David Horak, Charles University, Prague
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  • Tanja T. Ingversen
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  • Stepan Janecek, Czech Academy of Sciences
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  • Glauco Kohler, Institute Nacional de Pesquisas da Amazonia
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  • Carlos Lara, Univ Autonoma Tlaxcala, Ctr Invest Ciencias Biol
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  • Flor M. G. Las-Casas, Universidade Federal Rural de Pernambuco
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  • Ariadna V. Lopes, Universidade Federal Rural de Pernambuco
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  • Adriana O. Machado, Univ Fed Uberlandia, Universidade Federal de Uberlandia, Inst Biol
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  • Caio G. Machado, Universidade Estadual de Feira de Santana
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  • Isabel C. Machado, Universidade Federal Rural de Pernambuco
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  • Maria A. Maglianesi, Univ Estatal Distancia UNED, Universidad Estatal a Distancia (UNED), Vicerrectoria Invest
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  • Tiago S. Malucelli, Universidade Federal do Parana
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  • Jayasilan Mohd-Azlan, University of Malaysia Sarawak
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  • Alan C. Moura, Universidade Estadual de Feira de Santana
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  • Genilda M. Oliveira, Instituto Federal de Brasilia
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  • Paulo E. Oliveira, Univ Fed Uberlandia, Universidade Federal de Uberlandia, Inst Biol
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  • Juan Francisco Ornelas, AC Red Biol Evolut, Instituto Nacional de Ecologia - Mexico, Inst Ecol
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  • Jan Riegert, Univ South Bohemia, University of South Bohemia Ceske Budejovice, Fac Sci, Inst Math & Biomath
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  • Licleia C. Rodrigues, Universidade Federal de Minas Gerais
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  • Liliana Rosero-Lasprilla, Univ Pedag & Tecnol Colombia, Grp Invest Biol Conservac, Escuela Ciencias Biol
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  • Ana M. Rui, Universidade Federal de Pelotas
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  • Marlies Sazima, Universidade de Sao Paulo
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  • Baptiste Schmid, Swiss Ornithol Inst
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  • Ondrej Sedlacek, Charles University, Prague
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  • Allan Timmermann
  • Maximilian G. R. Vollstaedt, Goethe University Frankfurt
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  • Zhiheng Wang, Peking University
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  • Stella Watts, University of Northampton
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  • Carsten Rahbek, Imperial College London, London, UK.
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  • Isabela G. Varassin, Universidade Federal do Parana

Aim Among the world's three major nectar-feeding bird taxa, hummingbirds are the most phenotypically specialized for nectarivory, followed by sunbirds, while the honeyeaters are the least phenotypically specialized taxa. We tested whether this phenotypic specialization gradient is also found in the interaction patterns with their floral resources.

Location Americas, Africa, Asia and Oceania/Australia.

Methods We compiled interaction networks between birds and floral resources for 79 hummingbird, nine sunbird and 33 honeyeater communities. Interaction specialization was quantified through connectance (C), complementary specialization (H-2), binary (Q(B)) and weighted modularity (Q), with both observed and null-model corrected values. We compared interaction specialization among the three types of bird-flower communities, both independently and while controlling for potential confounding variables, such as plant species richness, asymmetry, latitude, insularity, topography, sampling methods and intensity.

Results Hummingbird-flower networks were more specialized than honeyeater-flower networks. Specifically, hummingbird-flower networks had a lower proportion of realized interactions (lower C), decreased niche overlap (greater H-2) and greater modularity (greater Q(B)). However, we found no significant differences between hummingbird- and sunbird-flower networks, nor between sunbird- and honeyeater-flower networks.

Main conclusions As expected, hummingbirds and their floral resources have greater interaction specialization than honeyeaters, possibly because of greater phenotypic specialization and greater floral resource richness in the New World. Interaction specialization in sunbird-flower communities was similar to both hummingbird-flower and honeyeater-flower communities. This may either be due to the relatively small number of sunbird-flower networks available, or because sunbird-flower communities share features of both hummingbird-flower communities (specialized floral shapes) and honeyeater-flower communities (fewer floral resources). These results suggest a link between interaction specialization and both phenotypic specialization and floral resource richness within bird-flower communities at a global scale.

Original languageEnglish
JournalDiversity and Distributions
Volume44
Issue8
Pages (from-to)1891-1910
Number of pages20
ISSN0305-0270
DOIs
Publication statusPublished - Aug 2017

    Research areas

  • honeyeaters, hummingbirds, modularity, niche partitioning, ornithophily, plant-animal interactions, specialization, sunbirds, SEED-DISPERSAL NETWORKS, NECTAR-FEEDING BIRDS, POLLINATION SYSTEMS, ECOLOGICAL SPECIALIZATION, MUTUALISTIC NETWORKS, SPECIES RICHNESS, RAIN-FOREST, PLANT, HUMMINGBIRDS, EVOLUTIONARY

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