Are Non-Native Gastropods a Threat to Endangered Lichens?

Authors

  • Robert Cameron Nova Scotia Environment, Protected Areas Branch, P.O. Box 442, Halifax, Nova Scotia B3J 2P8

DOI:

https://doi.org/10.22621/cfn.v123i2.697

Keywords:

Boreal Felt Lichen, Erioderma pedicellatum, gastropods, non-native, Nova Scotia

Abstract

Extensive grazing by gastropods was found on endangered Boreal Felt Lichen (Erioderma pedicellatum) at Sixth Lake, Nova Scotia, in 2004. At least 80% of arboreal gastropods observed at the site were the introduced species Arion subfuscus. Subsequent surveys at five other locations in Nova Scotia showed 90% of arboreal gastropod individuals observed were introduced species. Potential impact on native lichen species, and in particular on rare and endangered species, is discussed.

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Issue

Vol. 123 No. 2 (2009)

Section

Notes

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