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Providing evidence to improve practice

Action: Floating pennywort: Flame treatment Control of Freshwater Invasive Species

Key messages

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  • A controlled, replicated, pilot experiment in 2010 in The Netherlands, found that flame treatments of 1, 2 or 3 seconds had a significantly negative and progressive impact on floating pennywort, and a 3 second repeat treatment after 11 days proved fatal.

Supporting evidence from individual studies

1 

A controlled, replicated, pilot experiment in 2010 in greenhouses in The Netherlands (Joost van der Burg & Michielsen 2010) found that flame treatments of 1, 2 or 3 seconds had a significantly negative and progressive impact on floating pennywort Hydrocotyle ranunculoides.  Repeat treatment six hours after the first had no marked effect on the eventual recovery of the plants, but a three second repeat treatment after 11 days proved fatal.  The plants were collected from the wild in Laarne, Belgium in early spring 2010 and raised in containers in the greenhouse. Photographs were taken of all treatments and estimates were made of pot surface coverage by green leaves.

 

Referenced papers

Please cite as:

Aldridge, D., Ockendon, N., Rocha, R., Smith, R.K. & Sutherland, W.J. (2019) Some aspects of control of freshwater invasive species. Pages 569-602 in: W.J. Sutherland, L.V. Dicks, N. Ockendon, S.O. Petrovan & R.K. Smith (eds) What Works in Conservation 2019. Open Book Publishers, Cambridge, UK.