The ghost of competition past in the phylogeny of island endemic plants.
Journal of Ecology, 92(1) pp. 168–173.
1 Large endemic plant taxa found on oceanic archipelagos are frequently monophyletic, indicating that they originate from a single colonization event. 2 Colonization is a two-stage process requiring both dispersal and establishment to be successful. Accordingly, once-only colonization may be explained either by dispersal barriers limiting colonization, or by the first successful colonization of an island inhibiting the establishment of later arrivals through niche pre-emption and interspecific competition. 3 Using the endemic flora of the Canaries and Macaronesia as a test case, I argue that barriers to dispersal are low and that niche pre-emption is therefore the more likely explanation for the monophyly of large endemic groups in these islands.
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||Canary Islands; colonization; endemism; interspecific
competition; Macaronesia; niche pre-emption; phylogeny; plants; speciation; nuclear ribosomal dna; internal transcribed spacers; olea-europaea l.; canary-islands; molecular phylogeny; sequence data; macaronesian islands; tolpis asteraceae; field experiments; evolution
||Science > Environment, Earth and Ecosystems
|Interdisciplinary Research Centre:
||Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
||14 Nov 2006
||21 Oct 2011 08:26
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