The Robustness, Link-species Relationship and Network Properties of Model Food Webs

Gavin Abernethy, M McCartney, David H. Glass

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1 Citation (Scopus)

Abstract

New results are collected using the Webworld model which simulates evolutionary food web construction with population dynamics (Drossel et al., 2001 [1]). We show that it supports a link-species relationship of neither constant link-density nor constant connectance, and new properties for the food webs are calculated including clustering coefficients and stability in the sense of community robustness to species deletion. Time-series for more than 40 properties of the taxonomic and trophic webs are determined over the course of individual simulations. Robustness is found to be positively correlated with connectance, but negatively with diversity, and we study the long-term development of model webs including the distribution of extinction events in a simulation with 10 8 speciation events.

LanguageEnglish
Pages20-47
Number of pages28
JournalCommunications in Nonlinear Science and Numerical Simulation
Volume70
Early online date12 Oct 2018
DOIs
Publication statusPublished - 1 May 2019

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Food Web
Robustness
Speciation
Population dynamics
Clustering Coefficient
Population Dynamics
Extinction
Deletion
Time series
Simulation
Model
Relationships
Community

Keywords

  • Food web simulation
  • eco-evolutionary models
  • link-species relationship
  • community robustness
  • Eco-evolutionary models
  • Link-species relationship
  • Community robustness
  • Food web simulation

Cite this

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