Effect of localization on the stability of mutualistic ecological networks

Nature Communications
Samir SuweisAmos Maritan

Abstract

The relationships between the core-periphery architecture of the species interaction network and the mechanisms ensuring the stability in mutualistic ecological communities are still unclear. In particular, most studies have focused their attention on asymptotic resilience or persistence, neglecting how perturbations propagate through the system. Here we develop a theoretical framework to evaluate the relationship between the architecture of the interaction networks and the impact of perturbations by studying localization, a measure describing the ability of the perturbation to propagate through the network. We show that mutualistic ecological communities are localized, and localization reduces perturbation propagation and attenuates its impact on species abundance. Localization depends on the topology of the interaction networks, and it positively correlates with the variance of the weighted degree distribution, a signature of the network topological heterogeneity. Our results provide a different perspective on the interplay between the architecture of interaction networks in mutualistic communities and their stability.

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Citations

Nov 7, 2015·PloS One·Fabio SaraccoLuciano Pietronero
Feb 12, 2015·PloS One·Matthieu CristelliLuciano Pietronero
Aug 23, 2016·Scientific Reports·James P L Tan
May 26, 2018·Proceedings. Biological Sciences·Kazutaka Kawatsu, Michio Kondoh
Oct 30, 2019·Nature Ecology & Evolution·Andrew M Hein, Benjamin T Martin
Sep 28, 2017·Scientific Reports·Daniel M BusielloAmos Maritan
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Jul 16, 2017·Physical Review. E·Chengyi TuSamir Suweis
Feb 25, 2017·Nature Communications·Jacopo GrilliAmos Maritan
Sep 27, 2018·Physical Review. E·Theo GibbsStefano Allesina
Sep 28, 2017·Physical Review. E·Priodyuti PradhanSarika Jalan

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