Native and non-native species of the Dutch Wadden Sea in 2014

In the summer of 2014 a rapid assessment was done of the marine algae and macrofauna of both the hard substrata and soft substrata in the Dutch Wadden Sea. Between August and October the diversity of native and non-native species was assessed 242 times at different times and locations in either samples or during visual inspections of specific Wadden Sea habitats.