Please use this identifier to cite or link to this item:
Title: Species functional traits and abundance as drivers of multiplex ecological networks: first empirical quantification of inter-layer edge weights
Authors: Hervías-Parejo, S. 
Tur, C.
Heleno, R. 
Nogales, M. 
Timóteo, S. 
Traveset, A. 
Keywords: Galápagos; body size; multilayer networks; pollination; seed-dispersal; species abundance
Issue Date: 25-Nov-2020
Volume: 287
Issue: 1939
Abstract: 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.
ISSN: 0962-8452
DOI: 10.1098/rspb.2020.2127
Rights: openAccess
Appears in Collections:I&D CFE - Artigos em Revistas Internacionais

Show full item record


checked on Aug 2, 2022

Page view(s)

checked on Sep 16, 2022


checked on Sep 16, 2022

Google ScholarTM




Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.