Evolutionary winners are ecological losers among oceanic island plants

Aim Adaptive radiation, in which successful lineages proliferate by exploiting untapped niche space, provides a popular but potentially misleading characterization of evolution on oceanic islands. Here we analyse the respective roles of members of in situ diversified vs. non‐diversified lineages in...

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Bibliographic Details
Published in:Journal of biogeography 2021-09, Vol.48 (9), p.2186-2198
Main Authors: Fernández‐Palacios, José María, Otto, Rüdiger, Borregaard, Michael K., Kreft, Holger, Price, Jonathan P., Steinbauer, Manuel J., Weigelt, Patrick, Whittaker, Robert J., Lavergne, Sebastien
Format: Article
Language:English
Subjects:
Adaptive radiation
Archipelagoes
Canary Islands
colonization
community assembly
Coniferous forests
diversified lineages
ecological losers
Ecology
Ecosystems
Endemic species
Evolution
Flora
Flowers & plants
Forest ecosystems
Geographical distribution
island evolution
Islands
Mountains
Niches
Oceanic islands
Plant communities
Plant populations
Plants
Plants (botany)
Rabinowitz rarity
Radiation
Scrub
Shrubs
Speciation
vascular plants
Vegetation
vegetation plots
Woodlands
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Summary:Aim Adaptive radiation, in which successful lineages proliferate by exploiting untapped niche space, provides a popular but potentially misleading characterization of evolution on oceanic islands. Here we analyse the respective roles of members of in situ diversified vs. non‐diversified lineages in shaping the main ecosystems of an archipelago to explore the relationship between evolutionary and ecological ‘success’. Location Canary Islands. Taxon Vascular plants. Methods We quantified the abundance/rarity of the native flora according to the geographical range (number of islands where present and geographical extent of the range), habitat breadth (climatic niche) and local abundance (cover) using species distribution data based on 500 × 500 m grid cells and 2000 vegetation inventories located all over the archipelago. Results Species of diversified lineages have significantly smaller geographic ranges, narrower climatic niches and lower local abundances than those of non‐diversified lineages. Species rarity increased with the degree of diversification. The diversified Canarian flora is mainly comprised by shrubs. At both archipelagic and island level, the four core ecosystems (Euphorbia scrub, thermophilous woodlands, laurel forest and pine forest) were dominated by non‐diversified lineages species, with diversified lineages species providing
ISSN:0305-0270
1365-2699
DOI:10.1111/jbi.14143