Deforestation and apparent extinctions of endemic forest beetles in Madagascar

Ilkka Hanski, Helena Koivulehto, Alison Cameron, Pierre Rahagalala

    Research output: Contribution to journalArticleScientificpeer-review

    Abstract

    Madagascar has lost about half of its forest cover since 1953 with much regional variation, for instance most of the coastal lowland forests have been cleared. We sampled the endemic forest-dwelling Helictopleurini dung beetles across Madagascar during 2002-2006. Our samples include 29 of the 51 previously known species for which locality information is available. The most significant factor explaining apparent extinctions (species not collected by us) is forest loss within the historical range of the focal species, suggesting that deforestation has already caused the extinction, or effective extinction, of a large number of insect species with small geographical ranges, typical for many endemic taxa in Madagascar. Currently, roughly 10% of the original forest cover remains. Species-area considerations suggest that this will allow roughly half of the species to persist. Our results are consistent with this prediction.
    Original languageEnglish
    JournalBiology Letters
    Volume3
    Issue number3
    Pages (from-to)344-347
    Number of pages4
    ISSN1744-9561
    DOIs
    Publication statusPublished - 2007
    MoE publication typeA1 Journal article-refereed

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