Fighting Invasive Seaweed

In European waters, the non-indigenous, Rugulopteryx is a recent example of an unprecedented case of bioinvasion by a marine macroalgae. The species was first detected in spring 2002, close to a small harbour in Thau Lagoon (France). In 2015 and 2016 it was recorded in Ceuta and in Andalusian waters, respectively.

In the Strait of Gibraltar, Rugulopteryx has expanded massively causing considerable ecological impacts on coastal communities. For instance, after its arrival, Rugulopteryx became the most abundant species over a period of only one year covering over 90% of the bottom between 10 and 20 m depth, which implied a significant change in the structure of benthic communities.

Additionally, hundreds of tons of this invasive species accumulated on beaches becoming a nuisance with implications for both the tourism and public health. Fishermen have also reported that the species clogs fishing nets causing a substantial reduction in their ability to catch fish.

Consequently, an investigation project entitled Rugulopteryx has the objective of helping to prevent, as well as control the expansion of this invasive menace, with the participation of the Universidad de Granada (UGR). Professor María Altamirano at the Botanic & Vegetal Physiology Department at the Universidad de Málaga (UMA) leads the investigation.

Spain was the first European country where this species has shown an invasive nature, and although there are currently no protocols for the management, control or eradication of the problem, the Junta de Andalucía has established a monitoring and early warning network and developed some actions to collect mapping data.

(News: Andalucia)

 

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