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Evolutionary winners are ecological losers among oceanic island plants

Title data

Fernández-Palacios, José María ; Otto, Rüdiger ; Borregaard, Michael K. ; Kreft, Holger ; Price, Jonathan P. ; Steinbauer, Manuel J. ; Weigelt, Patrick ; Whittaker, Robert J.:
Evolutionary winners are ecological losers among oceanic island plants.
In: Journal of Biogeography. (7 June 2021) .
ISSN 0305-0270
DOI: https://doi.org/10.1111/jbi.14143

Official URL: Volltext

Abstract in another language

Abstract 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 <25% cover. Species of diversified lineages, although constituting 54% of the archipelagic native flora, were only abundant in two rare ecosystems: high mountain scrub and rock communities. Main conclusions Radiated species, endemic products of in situ speciation, are mostly rare in all three rarity axes and typically do not play an important role in structuring plant communities on the Canaries. The vegetation of the major ecosystem types is dominated by plants representing non-diversified lineages (species that derive from immigration and accumulation), while species of evolutionarily successful lineages are abundant only in marginal habitats and could, therefore, be considered ecological losers. Within this particular oceanic archipelago, and we posit within at least some others, evolutionary success in plants is accomplished predominantly at the margins.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Canary Islands; Colonization; Community assembly; Diversified lineages; Ecological losers; Island evolution; Rabinowitz rarity; Vascular plants; Vegetation plots
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Cultural Studies > Department of Sport Science > Professor Sport Ecology
Faculties > Faculty of Cultural Studies > Department of Sport Science > Professor Sport Ecology > Professor Sport Ecology - Univ.-Prof. Dr. Manuel Jonas Steinbauer
Profile Fields > Advanced Fields > Ecology and the Environmental Sciences
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties
Faculties > Faculty of Cultural Studies
Faculties > Faculty of Cultural Studies > Department of Sport Science
Profile Fields
Profile Fields > Advanced Fields
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 500 Natural sciences
500 Science > 560 Fossils, prehistoric life
500 Science > 570 Life sciences, biology
500 Science > 580 Plants (Botany)
Date Deposited: 09 Jun 2021 08:55
Last Modified: 24 Jun 2021 12:59
URI: https://eref.uni-bayreuth.de/id/eprint/65707