R. J. D. Key
Recent range expansions in non-native predatory beetles on sub-Antarctic South Georgia
Key, R. J. D.; Convey, P.; Key, R. S.; Key, R. J. D.; Belchier, M.; Waller, C. L.
R. S. Key
R. J. D. Key
Dr Catherine Waller C.L.Waller@hull.ac.uk
The human-assisted establishment of two non-native predatory carabid beetles (Merizodus soledadinus (Guerin-M,n,ville), Trechisibus antarcticus (Dejean)) on the sub-Antarctic island of South Georgia occurred 30-50 years ago, but the distribution of these species has never been the subject of regular monitoring, and was last assessed in the mid-1990s. Based on opportunistic collection records and directed field survey activities on South Georgia over four summer seasons between 2002/3 and 2008/9, we describe recent and important range expansions in both species on the island. The new distributional ranges of both species are highly suggestive of a continuing inadvertent human role in transferring them across the obstructions presented by tidewater glaciers or higher-altitude mountain passes. Both species now have the potential to spread unchecked by any other geographical obstructions across a large section of the north-east coast of the island and are likely to have considerable negative impacts on the elements of the native (including endemic) terrestrial invertebrate fauna.
|Journal Article Type||Article|
|Peer Reviewed||Peer Reviewed|
|APA6 Citation||Convey, P., Key, R. S., Key, R. J. D., Belchier, M., & Waller, C. L. (2011). Recent range expansions in non-native predatory beetles on sub-Antarctic South Georgia. Polar Biology, 34(4), (597-602). doi:10.1007/s00300-010-0909-6. ISSN 0722-4060|
|Keywords||Carabidae; Invasive species; Endemic species; Human impacts|
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