Functional diversity mediates macroecological variation in plant-hummingbird interaction networks

Author(s):Show less -

Maruyama, Pietro Kiyoshi ^{[1, 2, 3]} ; Sonne, Jesper ^[2] ; Vizentin-Bugoni, Jeferson ^{[4, 5]} ; Gonzalez, Ana M. Martin ^[2] ; Zanata, Thais B. ^{[2, 6]} ; Abrahamczyk, Stefan ^[7] ; Alarcon, Ruben ^[8] ; Araujo, Andrea C. ^[9] ; Araujo, Francielle P. ^[10] ; Baquero, Andrea C. ^[2] ; Chavez-Gonzalez, Edgar ^[11] ; Coelho, Aline G. ^[12] ; Cotton, Peter A. ^[13] ; Dehling, D. Matthias ^{[14, 15]} ; Fischer, Erich ^[9] ; Kohler, Glauco ^[16] ; Lara, Carlos ^[17] ; Las-Casas, Flor Maria G. ^[18] ; Machado, Adriana O. ^[1] ; Machado, Caio G. ^[12] ; Maglianesi, Maria A. ^{[15, 19]} ; Malucelli, Tiago S. ^[6] ; Humberto Marin-Gomez, Oscar ^[20] ; Oliveira, Paulo E. ^[1] ; Francisco Ornelas, Juan ^[21] ; Ortiz-Pulido, Raul ^[22] ; Ramirez-Burbano, Monica B. ^[23] ; Rocca, Marcia A. ^[24] ; Rodrigues, Licleia C. ^[25] ; Rosero-Lasprilla, Liliana ^[26] ; Rui, Ana M. ^[27] ; Sandel, Brody ^[28] ; Svenning, Jens-Christian ^{[29, 30]} ; Tinoco, Boris A. ^[31] ; Varassin, Isabela G. ^[6] ; Watts, Stella ^[32] ; Rahbek, Carsten ^{[2, 33]} ; Sazima, Marlies ^[3] ; Schleuning, Matthias ^[15] ; Dalsgaard, Bo ^[2]

Affiliation:Show less -

^[1] Univ Fed Uberlandia, Inst Biol, Uberlandia, MG - Brazil

^[2] Univ Copenhagen, Nat Hist Museum Denmark, Ctr Macroecol Evolut & Climate, Copenhagen O - Denmark

^[3] Univ Estadual Campinas, UNICAMP, Inst Biol, Dept Biol Vegetal, Cx Postal 6109, BR-13083970 Campinas, SP - Brazil

^[4] Univ Estadual Campinas, UNICAMP, Programa Posgrad Ecol, Campinas - Brazil

^[5] Univ Illinois Champaign Urbana, Nat Resources & Environm Sci Dept, Champaign, IL - USA

^[6] Univ Fed Parana, Ctr Politecn, Dept Bot, Lab Ecol Vegetal, Curitiba, Parana - Brazil

^[7] Nees Inst Biodivers Plants, Bonn - Germany

^[8] Calif State Univ Channel Isl, Biol Program, Camarillo, CA - USA

^[9] Univ Fed Mato Grosso do Sul, Inst Biociencias, Campo Grande, MS - Brazil

^[10] Univ Estadual Rio Grande do Sul, Sao Francisco De Paula, RS - Brazil

^[11] Inst Ecol AC, Red Ecoetol, Xalapa, Veracruz - Mexico

^[12] Univ Estadual Feira De Santana, Dept Ciencias Biol, Lab Ornitol, Feira De Santana - Brazil

^[13] Univ Plymouth, Marine Biol & Ecol Res Ctr, Plymouth, Devon - England

^[14] Univ Canterbury, Sch Biol Sci, Christchurch - New Zealand

^[15] Senckenberg Biodivers & Climate Res Ctr BiK F, Frankfurt - Germany

^[16] Inst Nacl de Pesquisas da Amazonia, Manaus, Amazonas - Brazil

^[17] Univ Autonoma Tlaxcala, Ctr Invest Ciencias Biol, San Felipe Ixtacuixtla - Mexico

^[18] Univ Fed Pernambuco, Lab Ecol Systemat & Evolut Birds, Recife, PE - Brazil

^[19] Univ Estatal Distancia, Vicerrectoria Invest, San Jose - Costa Rica

^[20] Inst Ecol AC, Xalapa, Veracruz - Mexico

^[21] Inst Ecol AC, Dept Biol Evolut, Xalapa, Veracruz - Mexico

^[22] Univ Autonoma Estado Hidalgo, Inst Ciencias Basicas & Ingn, Ctr Invest Biol, Mineral De La Reforma - Mexico

^[23] Univ Valle, Dept Biol, Fac Ciencias Nat & Exactas, Programa Doctorado Ciencias Biol, Cali - Colombia

^[24] Univ Fed Sergipe, Ctr Ciencias Biol & Saude, Dept Ecol, Sao Cristovao - Brazil

^[25] Univ Fed Minas Gerais, ICB, Dept Zool, Lab Ornitol, Belo Horizonte, MG - Brazil

^[26] Univ Pedag & Tecnol Colombia, Grp Invest Biol Conservac, Escuela Ciencias Biol, Tunja - Colombia

^[27] Univ Fed Pelotas, Inst Biol, Dept Ecol Zool & Genet, Pelotas - Brazil

^[28] Santa Clara Univ, Dept Biol, Santa Clara, CA 95053 - USA

^[29] Aarhus Univ, Dept Biosci, Sect Ecoinformat & Biodivers, Aarhus C - Denmark

^[30] Aarhus Univ, BIOCHANGE, Ctr Biodivers Dynam Changing World, Aarhus C - Denmark

^[31] Univ Azuay, Escuela Biol Ecol & Gest, Cuenca - Ecuador

^[32] Univ Northampton, Dept Environm & Geog Sci, Landscape & Biodivers Res Grp, Northampton - England

^[33] Imperial Coll London, Dept Life Sci, Ascot, Berks - England

• Document type: Journal article
• Source: GLOBAL ECOLOGY AND BIOGEOGRAPHY; v. 27, n. 10, p. 1186-1199, OCT 2018.
• Web of Science Citations: 7

Abstract

Aim Species interaction networks are known to vary in structure over large spatial scales. We investigated the hypothesis that environmental factors affect interaction network structure by influencing the functional diversity of ecological communities. Notably, we expect more functionally diverse communities to form interaction networks with a higher degree of niche partitioning. Location: Time period: Americas. Current. Major taxa studied: Methods Hummingbirds and their nectar plants. We used a large dataset comprising 74 quantitative plant-hummingbird interaction networks distributed across the Americas, along with morphological trait data for 158 hummingbird species. First, we used a model selection approach to evaluate associations between the environment (climate, topography and insularity), species richness and hummingbird functional diversity as predictors of network structure (niche partitioning, i.e., complementary specialization and modularity). Second, we used structural equation models (SEMs) to ask whether environmental predictors and species richness affect network structure directly and/or indirectly through their influence on hummingbird functional diversity. For a subset of 28 networks, we additionally evaluated whether plant functional diversity was associated with hummingbird functional diversity and network structure. Results Main conclusions: Precipitation, insularity and plant richness, together with hummingbird functional diversity (specifically, functional dispersion), were consistently strong predictors of niche partitioning in plant-hummingbird networks. Moreover, SEMs showed that environmental predictors and plant richness affected network structure both directly and indirectly through their effects on hummingbird functional diversity. Plant functional diversity, however, was unrelated to hummingbird functional diversity and network structure. We reveal the importance of hummingbird functional diversity for niche partitioning in plant-hummingbird interaction networks. The lack of support for similar effects for plant functional diversity potentially indicates that consumer functional diversity might be more important for structuring interaction networks than resource functional diversity. Changes in pollinator functional diversity are therefore likely to alter the structure of interaction networks and associated ecosystem functions. (AU)

• FAPESP's process: 15/21457-4 - Linking macroecological patterns in ecological networks to functional traits of species: plant-hummingbird networks across the Americas
• Grantee: Pietro Kiyoshi Maruyama Mendonça
• Support Opportunities: Scholarships in Brazil - Post-Doctoral