ArticleBMC evolutionary biology2019
Leaps and bounds: geographical and ecological distance constrained the colonisation of the Afrotemperate by Erica.
Article in BMC evolutionary biology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed, 24 citations in OpenAlex.
- Article
- Redefining the megagenusPhytoKeys · 2024Review
- Spatial decoupling of taxon richness, phylogenetic diversity and threat status in the megagenusPhytoKeys · 2024Article
- Repeatedly Northwards and Upwards: Southern African Grasslands Fuel the Colonization of the African Sky Islands inPlants (Basel, Switzerland) · 2023Article
- Floral Color, Anthocyanin Synthesis Gene Expression and Control in Cape Erica Species.Frontiers in plant science · 2019Article
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Authors and funding
8 authors at 5 institutions in 4 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe coincidence of long distance dispersal (LDD) and biome shift is assumed to be the result of a multifaceted interplay between geographical distance and ecological suitability of source and sink areas. Here, we test the influence of these factors on the dispersal history of the flowering plant genus Erica (Ericaceae) across the Afrotemperate. We quantify similarity of Erica climate niches per biogeographic area using direct observations of species, and test various colonisation scenarios while estimating ancestral areas for the Erica clade using parametric biogeographic model testing.
resultsWe infer that the overall dispersal history of Erica across the Afrotemperate is the result of infrequent colonisation limited by geographic proximity and niche similarity. However, the Drakensberg Mountains represent a colonisation sink, rather than acting as a "stepping stone" between more distant and ecologically dissimilar Cape and Tropical African regions. Strikingly, the most dramatic examples of species radiations in Erica were the result of single unique dispersals over longer distances between ecologically dissimilar areas, contradicting the rule of phylogenetic biome conservatism.
conclusionsThese results highlight the roles of geographical and ecological distance in limiting LDD, but also the importance of rare biome shifts, in which a unique dispersal event fuels evolutionary radiation.
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