List name
WFD UKTAG 2015 Alien Species Alarm list
List type
Species characters list
The alarm list has been compiled by the UKTAG Alien Species Group using data from a range of sources and suggestions from external reviewers. Its aim is to encourage reporting of any species listed to the relevant authorities and thus provide an opportunity for appropriate action to be taken. The species listed are those thought to pose a risk to surface waters and their ecological status under the EC Water Framework Directive, but whose presence has not yet been recorded in Great Britain. The lists will be kept under continual review and amended as necessary. The United Kingdom Technical Advisory Group (UKTAG) was established to provide coordinated advice on technical aspects of the implementation of the Water Framework Directive (WFD) in the UK. Part of the role of the UKTAG is to help assess the risk of water bodies failing to achieve the WFD's environmental objectives. The UKTAG consider that non-native species are one of the significant pressures that could result in a water body failing to meet environmental objectives (such as failing to achieve good ecological status). The UK TAG Alien Species Group (ASG) is a technical sub-group that provides scientific advice to the Water Framework Directive UK Technical Advisory Group. The ASG uses scientific evidence to decide how an invasive non-native species should be categorised in relation to the potential level of adverse impact and risk it poses to the water environment; economic considerations or other issues are not taken into account at this stage. Species are assessed to be of high, low, or unknown impact and this listing is then incorporated into guidance for the implementation of the Water Framework Directive (WFD).
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1 Number of Taxa

1 Distinct Species

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Megabalanus coccopoma
Megabalanus coccopoma (Darwin, 1854)
Action Supplied Name Scientific Name (matched) Image Author (matched) Common Name (matched) region
Megabalanus coccopoma Megabalanus coccopoma (Darwin, 1854)
England, Scotland, Wales
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