Surveying & Monitoring Case
Pilot eradication of invasive non-native seasquirt,
In 2008 the invasive non-native seasquirt
Didemnum vexillum was
discovered in Holyhead marina. Across the world, from St George's
Bank off North America to oyster and mussel farms in New Zealand, this sea squirt has
been making a pest of itself.
It overgrows the native animals and plants (including
commercial oysters and mussels), and can then take a long 'pendular'
form which means native species can no longer settle. Its life
strategy means that it can out compete most things, and has no known
predators. Marine EcoSol has been working with the Countryside
to trial its eradication from Holyhead Marina, therefore curbing its
impact on the local environment. This also involves monitoring the
species movements in and around the harbour.
Watch more detail about the eradication project on You Tube:
or for more detail on
Didemnum vexillum from the
GB Non-Native Species
on You Tube:
For more detail on invasive non-native species in the
see the GB