Providing evidence to improve practice

Action: Crassula helmsii: Physical control using manual/mechanical control or dredging Control of Freshwater Invasive Species

Key messages

  • We found no evidence for the effects of physical control, using manual or mechanical control or dredging, on Crassula helmsii.

'No evidence' for an action means we have not yet found any studies that directly and quantitatively tested this action during our systematic journal and report searches. Therefore we have been unable to assess whether or not the action is effective or has any harmful impacts. Please get in touch if you know of such a study for this action.

 

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