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Coevolution, diversification and alternative states in two-trophic communities

Northfield, Tobin D. ; Ripa, Jörgen LU ; Nell, Lucas A. and Ives, Anthony R. (2020) In Ecology Letters
Abstract

Single-trait eco-evolutionary models of arms races between consumers and their resource species often show inhibition rather than promotion of community diversification. In contrast, modelling arms races involving multiple traits, we found that arms races can promote diversification when trade-off costs among traits make simultaneous investment in multiple traits either more beneficial or more costly. Coevolution between resource and consumer species generates an adaptive landscape for each, with the configuration giving predictable suites of consumer and resource species. Nonetheless, the adaptive landscape contains multiple alternative stable states, and which stable community is reached depends on small stochastic differences... (More)

Single-trait eco-evolutionary models of arms races between consumers and their resource species often show inhibition rather than promotion of community diversification. In contrast, modelling arms races involving multiple traits, we found that arms races can promote diversification when trade-off costs among traits make simultaneous investment in multiple traits either more beneficial or more costly. Coevolution between resource and consumer species generates an adaptive landscape for each, with the configuration giving predictable suites of consumer and resource species. Nonetheless, the adaptive landscape contains multiple alternative stable states, and which stable community is reached depends on small stochastic differences occurring along evolutionary pathways. Our results may solve a puzzling conflict between eco-evolutionary theory that predicts community diversification via consumer–resource interactions will be rare, and empirical research that has uncovered real cases. Furthermore, our results suggest that these real cases might be just a subset of alternative stable communities.

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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
epub
subject
keywords
Coexistence, community structure, divergence, predator, prey
in
Ecology Letters
publisher
Wiley-Blackwell
external identifiers
  • pmid:33201560
  • scopus:85096663977
ISSN
1461-023X
DOI
10.1111/ele.13639
language
English
LU publication?
yes
id
ff6b2e5d-88fb-483d-85de-e0a60d2df193
date added to LUP
2020-12-09 07:45:34
date last changed
2021-03-24 02:56:45
@article{ff6b2e5d-88fb-483d-85de-e0a60d2df193,
  abstract     = {<p>Single-trait eco-evolutionary models of arms races between consumers and their resource species often show inhibition rather than promotion of community diversification. In contrast, modelling arms races involving multiple traits, we found that arms races can promote diversification when trade-off costs among traits make simultaneous investment in multiple traits either more beneficial or more costly. Coevolution between resource and consumer species generates an adaptive landscape for each, with the configuration giving predictable suites of consumer and resource species. Nonetheless, the adaptive landscape contains multiple alternative stable states, and which stable community is reached depends on small stochastic differences occurring along evolutionary pathways. Our results may solve a puzzling conflict between eco-evolutionary theory that predicts community diversification via consumer–resource interactions will be rare, and empirical research that has uncovered real cases. Furthermore, our results suggest that these real cases might be just a subset of alternative stable communities.</p>},
  author       = {Northfield, Tobin D. and Ripa, Jörgen and Nell, Lucas A. and Ives, Anthony R.},
  issn         = {1461-023X},
  language     = {eng},
  month        = {11},
  publisher    = {Wiley-Blackwell},
  series       = {Ecology Letters},
  title        = {Coevolution, diversification and alternative states in two-trophic communities},
  url          = {http://dx.doi.org/10.1111/ele.13639},
  doi          = {10.1111/ele.13639},
  year         = {2020},
}