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Evolution of resour...
Evolution of resource specialisation in competitive metacommunities
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- Wickman, Jonas, 1985- (author)
- Umeå universitet,Institutionen för matematik och matematisk statistik
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- Diehl, Sebastian (author)
- Umeå universitet,Institutionen för ekologi, miljö och geovetenskap
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- Brännström, Åke, 1975- (author)
- Umeå universitet,Institutionen för matematik och matematisk statistik,Evolution and Ecology Program, International Institute for Applied Systems Analysis (IIASA), Laxenburg, Austria
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(creator_code:org_t)
- 2019-08-07
- 2019
- English.
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In: Ecology Letters. - : John Wiley & Sons. - 1461-023X .- 1461-0248. ; 22:11, s. 1746-1756
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Abstract
Subject headings
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- Spatial environmental heterogeneity coupled with dispersal can promote ecological persistence of diverse metacommunities. Does this premise hold when metacommunities evolve? Using a two-resource competition model, we studied the evolution of resource-uptake specialisation as a function of resource type (substitutable to essential) and shape of the trade-off between resource uptake affinities (generalist- to specialist-favouring). In spatially homogeneous environments, evolutionarily stable coexistence of consumers is only possible for sufficiently substitutable resources and specialist-favouring trade-offs. Remarkably, these same conditions yield comparatively low diversity in heterogeneous environments, because they promote sympatric evolution of two opposite resource specialists that, together, monopolise the two resources everywhere. Consumer diversity is instead maximised for intermediate trade-offs and clearly substitutable or clearly essential resources, where evolved metacommunities are characterised by contrasting selection regimes. Taken together, our results present new insights into resource-competition-mediated evolutionarily stable diversity in homogeneous and heterogeneous environments, which should be applicable to a wide range of systems.
Subject headings
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
Keyword
- Adaptive dynamics
- coexistence
- consumer-resource interactions
- ESS
- spatial models
Publication and Content Type
- ref (subject category)
- art (subject category)
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