Climate-driven specialisation in plant–pollinator networks peaks outside the tropics

作者：Sailee P. Sakhalkar, Nico Blüthgen, Laura A. Burkle, Paul J. CaraDonna, Bo Dalsgaard, Carsten F. Dormann, Christopher N. Kaiser‐Bunbury, Tiffany M. Knight, Jeff Ollerton, Julian Resasco, Matthias Schleuning, Diego P. Vázquez, Rita N Afagwu, Ruben Alarcón, Felipe Wanderley Amorim, Marsal D. Amorim, Dominik Anýž, Blanca Arroyo‐Correa, Maddi Artamendi, Zeynep Atalay, Justin A. Bain, Katherine C. R. Baldock, Gavin Ballantyne, Caio S. Ballarin, Behnaz Balmaki, Michael Bartoš, Vasuki V. Belavadi, Paolo Biella, Anne D. Bjorkman, João Paulo Raimundo Borges, Jordi Bosch, Camila Bosenbecker, Stéphane Boyer, Karin T. Burghardt, Edson Cardona, Quebin Bosbely Casiá‐Ajché, Anthony M. T. Castagna, Ferhat Celep, Melanie N. Chisté, Yann Clough, James M. Cook, Liam P. Crowther, Fabio dos Reis, Luís P. da Silva, Wesley Dáttilo, Valeska De Cárdenas, Joan Díaz‐Calafat, Lynn V. Dicks, Rye Dickson, Marion L. Donald, Lee A. Dyer, Fairo F. Dzekashu, Natalia Escobedo‐Kenefic, Tom M. Fayle, Laura L. Figueroa, Jan Filip, Raúl García‐Camacho, Amy‐Marie Gilpin, Luis Giménez‐Benavides, Ingrid N. Gomes, Heather Grab, Ingo Graß, Travis J. Guy, Veronica Hederström, Carlos Hernández‐Castellano, Sandra Hervías‐Parejo, Andrea Holzschuh, Sebastian Hopfenmüller, José María Iriondo, Štěpán Janeček, Jana Jersáková, Shalene Jha, Aphrodite Kantsa, Tamar Keasar, Liam Kendall, Yannick Klomberg, Ishmeal N. Kobe, Theresia Krausl, Patricia Landaverde‐González, Carlos Lara‐Romero, H. Michael G. Lattorff, Felipe Librán‐Embid, Tial C. Ling, Sissi Lozada‐Gobilard, Francis Ewome Luma, Pedro Luna, Ludmilla Aguiar, Ana Carolina Pereira Machado, Isabel Cristina Machado, Ainhoa Magrach, Fabienne Maihoff, Gabriel Marcacci, Carlos Martínez‐Núñez, Pietro K. Maruyama, Natsuki Matsubara, Maggie M. Mayberry, Marco A. R. Mello, Ugo Mendes Diniz, Marcos Méndez, Jan E. J. Mertens, Rubén Milla, Javier Morente‐López, Tarcila de Lima Nadia, Georgios Nakas, Anders Nielsen, Alon Ornai, Sergio Osorio‐Canadas, Wilhelm H. A. Osterman, Todd M. Palmer, Theodora Petanidou, Christian W. W. Pirk, Kit Prendergast, Richard Primack, Luis Miguel Primo, Marina Querejeta, Zelma Glebya Maciel Quirino, André Rodrigo Rech, Sara Reverté, Pedro J. Rey, Léo Correia da Rocha‐Filho, Anselm Rodrigo, Masoud A. Rostami, Avery L. Russell, Silvia Santamaría, Francisco de Assis Ribeiro dos Santos, Takehiro Sasaki, Manu E. Saunders, Victor Hugo Duarte da Silva, Michael P. Simanonok, Antigoni Sounapoglou, Ingolf Steffan‐Dewenter, Sam Tarrant, Rubén Torices, Anna Traveset, Teja Tscharntke, Guillermo Uceda‐Gómez, Katherine R. Urban‐Mead, Casper J. van der Kooi, Catrin Westphal, Abdullahi A. Yusuf, Robert Tropek · 发表于：bioRxiv (Cold Spring Harbor Laboratory) · 年份：2025 · DOI：10.1101/2025.10.08.680666 · 被引用次数：1 · 研究领域：Plant and animal studies、Insect and Arachnid Ecology and Behavior、Ecology and Vegetation Dynamics Studies

Pollination is a key ecological process sustaining biodiversity and food security, yet global patterns of plant–pollinator specialisation have remained unresolved. Using the largest global dataset of quantitative networks (>3,400 networks, >110,000 interactions), we show that the latitudinal specialisation gradient (LSG) exists, but it is non-linear, hemispherically asymmetric, and strongly taxon-dependent. Network-level and pollinator specialisation were lowest in the tropics and peaked at northern mid-latitudes, whereas plants tended to become more specialised toward higher latitudes. Climate consistently outperformed latitude, species richness, and environmental productivity as a predictor of these patterns. Specialisation declined with increasing temperature, rose with moderate rainfall before declining at the wettest sites, and increased with temperature seasonality, but plants and pollinators responded differently to these drivers. Functional groups diverged strongly: ectothermic insects were most specialised in cooler, seasonal climates, while birds showed weaker links to latitude but reduced specialisation in wetter regions. These findings demonstrate that climate, rather than latitude or species richness, structures global variation in specialisation. Because warmer and less seasonal climates promote generalisation, climate change is likely to disrupt the most specialised pollination systems, unevenly across taxa and regions, with important consequences for bio...