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Disentangling co-occurrence patterns in n-partite ecosystems


Solé-Ribalta, Albert; Tessone, Claudio; Ferrari, Carlo; Borge-Holthoefer, Javie (2018). Disentangling co-occurrence patterns in n-partite ecosystems. arXiv.org 1810.12785, University of Zurich.

Abstract

The need to harmonise apparently irreconcilable arrangements in an ecosystem –nestedness andsegregation– has triggered so far different strategies. Methodological refinements, or the inclusion ofbehavioural preferences to the network dynamics offer a limited approach to the problem, since oneremains constrained within a 2-dimensional view of an ecosystem, i.e. a presence-absence matrix.Here we question this partial-view paradigm, and show that nestedness and segregation may coexistacross a varied range of scenarios. To do so, we rely on an upscaled representation of an ecologicalcommunity as ann-partite hypergraph, inspired by Hutchinson’s high-dimensional niche conceptand the latest trends on ecological multilayer networks. This yields an inclusive description of anecological system, for which we develop a natural extension of the definition of nestedness to largerdimensional spaces, revealing how competitive exclusion may operate regardless of a highly nestedbipartite system.

Abstract

The need to harmonise apparently irreconcilable arrangements in an ecosystem –nestedness andsegregation– has triggered so far different strategies. Methodological refinements, or the inclusion ofbehavioural preferences to the network dynamics offer a limited approach to the problem, since oneremains constrained within a 2-dimensional view of an ecosystem, i.e. a presence-absence matrix.Here we question this partial-view paradigm, and show that nestedness and segregation may coexistacross a varied range of scenarios. To do so, we rely on an upscaled representation of an ecologicalcommunity as ann-partite hypergraph, inspired by Hutchinson’s high-dimensional niche conceptand the latest trends on ecological multilayer networks. This yields an inclusive description of anecological system, for which we develop a natural extension of the definition of nestedness to largerdimensional spaces, revealing how competitive exclusion may operate regardless of a highly nestedbipartite system.

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Additional indexing

Item Type:Working Paper
Communities & Collections:03 Faculty of Economics > Department of Business Administration
Dewey Decimal Classification:330 Economics
Language:English
Date:12 July 2018
Deposited On:24 Sep 2019 12:34
Last Modified:04 Feb 2020 16:13
Series Name:arXiv.org
Number of Pages:11
ISSN:2331-8422
OA Status:Green
Free access at:Publisher DOI. An embargo period may apply.
Official URL:https://arxiv.org/abs/1807.04666
Other Identification Number:merlin-id:18455

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