Detalls de la publicació.

Article

Any:2020
Autor(s):S. Hervías-Parejo, C. Tur, R. Heleno, M. Nogales, S. Timóteo, A. Traveset
Títol:Species functional traits and abundance as drivers of multiplex ecological networks: First empirical quantification of inter-layer edge weights: Pollination-seed dispersal networks
Revista:PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
ISSN:0962-8452
JCR Impact Factor:5.349
Volum:287
Número:1939
Pàgines:20202127
D.O.I.:10.1098/rspb.2020.2127rspb20202127
Web:https://doi.org/10.1098/rspb.2020.2127
Resum:© 2020 The Author(s).Many vertebrate species act as both plant pollinators and seed-dispersers, thus interconnecting these processes, particularly on islands. Ecological multilayer networks are a powerful tool to explore interdependencies between processes; however, quantifying the links between species engaging in different types of interactions (i.e. inter-layer edges) remains a great challenge. Here, we empirically measured inter-layer edge weights by quantifying the role of individually marked birds as both pollinators and seed-dispersers of Galápagos plant species over an entire year. Although most species (80%) engaged in both functions, we show that only a small proportion of individuals actually linked the two processes, highlighting the need to further consider intra-specific variability in individuals' functional roles. Furthermore, we found a high variation among species in linking both processes, i.e. some species contribute more than others to the modular organization of the multilayer network. Small and abundant species are particularly important for the cohesion of pollinator seed-dispersal networks, demonstrating the interplay between species traits and neutral processes structuring natural communities.

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