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Are islands the end of the colonization road?

Ecologists have, up to now, widely regarded colonization of islands from continents as a one-way journey, mainly because of widely accepted assertions that less diverse island communities are easier to invade. However, continents present large targets and island species should be capable of making t...

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Published in:Trends in ecology & evolution (Amsterdam) 2008-08, Vol.23 (8), p.461-468
Main Authors: Bellemain, Eva, Ricklefs, Robert E.
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Language:English
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Ricklefs, Robert E.
description Ecologists have, up to now, widely regarded colonization of islands from continents as a one-way journey, mainly because of widely accepted assertions that less diverse island communities are easier to invade. However, continents present large targets and island species should be capable of making the reverse journey, considering they are the direct descendants of successful colonists and provided that they have not lost their dispersal abilities. Recent mapping of geography onto molecular phylogenies has revealed several cases of ‘reverse colonization’ (from islands to continents). We suggest this phenomenon warrants closer attention in ecology and biogeography. Assessing its significance will contribute to understanding the role of dispersal and establishment in biogeographic distributions and the assembly of natural biotas.
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subjects Animal and plant ecology
Animal, plant and microbial ecology
Animals
Biological and medical sciences
Fundamental and applied biological sciences. Psychology
General aspects
Geography
Phylogeny
Population Dynamics
Synecology
Terrestrial ecosystems
Vertebrates
Vertebrates: general zoology, morphology, phylogeny, systematics, cytogenetics, geographical distribution
title Are islands the end of the colonization road?
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