WireWeed

Why is wireweed a problem?

Wireweed is undesirable for a number of reasons. It is a fast-growing species and has an impact on our natural heritage by competing with native seaweeds and seagrasses through over-growing, shading and abrasion. As observed on Cumbrae, wireweed can form a distinct band along the lower shore (picture) which fundamentally alters the ecology and visual character of the shore.

Where wireweed becomes established in large quantities it has the potential to be a nuisance. For example, in harbours and shallow waters floating masses may become a hazard to commercial and recreational boating through the entanglement of propellers or blocking engine cooling systems.

What is being done about wireweed in Scotland?

Scottish Natural Heritage has listed wireweed in its Species Action Framework, as  an active invasive species with high potential for adverse impact on important biodiversity features. A five-year action plan has been drawn up for the management of wireweed and research is being carried out find out more about it distribution and impacts on native ecosystems. More details of this can be found at the Species Action Framework website.