Abundance drives broad patterns of generalisation in plant-hummingbird pollination networks

Autor(es):Mostrar menos -

Simmons, Benno I. ^[1] ; Vizentin-Bugoni, Jeferson ^[2] ; Maruyama, Pietro K. ^{[3, 4]} ; Cotton, Peter A. ^[5] ; Marin-Gomez, Oscar H. ^[6] ; Lara, Carlos ^[7] ; Rosero-Lasprilla, Liliana ^[8] ; Maglianesi, Maria A. ^{[9, 10]} ; Ortiz-Pulido, Raul ^[11] ; Rocca, Marcia A. ^[12] ; Rodrigues, Licleia C. ^[13] ; Tinoco, Boris A. ^[14] ; Vasconcelos, Marcelo F. ^[15] ; Sazima, Marlies ^[3] ; Gonzalez, Ana M. Martin ^[16] ; Sonne, Jesper ^[16] ; Rahbek, Carsten ^[16] ; Dicks, Lynn V. ^[17] ; Dalsgaard, Bo ^[16] ; Sutherland, William J. ^[1]

Afiliação do(s) autor(es):Mostrar menos -

^[1] Univ Cambridge, Dept Zool, David Attenborough Bldg, Pembroke St, Cambridge CB2 3QZ - England

^[2] Univ Illinois, Dept Nat Resources & Environm Sci, Urbana, IL - USA

^[3] Univ Estadual Campinas UNICAMP, Inst Biol, Dept Biol Vegetal, Campinas, SP - Brazil

^[4] Univ Fed Minas Gerais, Inst Ciencias Biol, Dept Biol Geral, Belo Horizonte, MG - Brazil

^[5] Univ Plymouth, Marine Biol & Ecol Res Ctr, Plymouth, Devon - England

^[6] Inst Ecol, Red Ambiente & Sustentabilidad, Xalapa, Veracruz - Mexico

^[7] Univ Autonoma Tlaxcala, Ctr Invest Ciencias Biol, Tlaxcala - Mexico

^[8] Univ Pedag & Tecnol Colombia, Escuela Ciencias Biol, Tunja, Boyaca - Colombia

^[9] Senckenberg Biodivers & Climate Res Ctr BiK F, Frankfurt - Germany

^[10] UNED, Invest, San Jose - Costa Rica

^[11] Univ Autonoma Estado Hidalgo, Inst Ciencias Basicas & Ingn, Ctr Invest Biol, Pachuca, Hidalgo - Mexico

^[12] Univ Fed Sergipe, Dept Ecol, Ctr Ciencias Biol & Saude, Sao Cristovao, SE - Brazil

^[13] Univ Fed Minas Gerais, ICB, Dept Zool, Lab Ornitol, Belo Horizonte, MG - Brazil

^[14] Univ Azuay, Escuela Biol, Cuenca - Ecuador

^[15] Pontificia Univ Catolica Minas Gerais, Museu Ciencias Nat, Belo Horizonte, MG - Brazil

^[16] Univ Copenhagen, Nat Hist Museum Denmark, Ctr Macroecol Evolut & Climate, Copenhagen - Denmark

^[17] Univ East Anglia, Sch Biol Sci, Norwich, Norfolk - England

• Tipo de documento: Artigo Científico
• Fonte: OIKOS; v. 128, n. 9, p. 1287-1295, SEP 2019.
• Citações Web of Science: 1

Resumo

Abundant pollinators are often more generalised than rare pollinators. This could be because abundant species have more chance encounters with potential interaction partners. On the other hand, generalised species could have a competitive advantage over specialists, leading to higher abundance. Determining the direction of the abundance-generalisation relationship is therefore a `chicken-and-egg' dilemma. Here we determine the direction of the relationship between abundance and generalisation in plant-hummingbird pollination networks across the Americas. We find evidence that hummingbird pollinators are generalised because they are abundant, and little evidence that hummingbirds are abundant because they are generalised. Additionally, most patterns of species-level abundance and generalisation were well explained by a null model that assumed interaction neutrality (interaction probabilities defined by species relative abundances). These results suggest that neutral processes play a key role in driving broad patterns of generalisation in animal pollinators across large spatial scales. (AU)

• Processo FAPESP: 15/21457-4 - Ligando padrões macroecológicos em redes ecológicas a atributos funcionais das espécies: redes de plantas e beija-flores nas Américas
• Beneficiário: Pietro Kiyoshi Maruyama Mendonça
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado