Low Level Islands with Endemic Lichens

Examples of such islands include Porto Santo [16 18] and Bermuda [19]. The fact that some of the lichens on these islands are endemic suggests that they are either not capable of dispersal and/or their ecological requirements are not met elsewhere. In the event of a marked temperature rise or a change in the incidence of fog, the climate may become unsuitable for these species, and the chances of reaching a suitable substitute location are remote. The risks are highest at islands without mountains, as no suitable habitat will become available higher up the mountains.

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