Schizoporella japonica Ortmann, 1890

Kakkonen, Jenni E., Worsfold, Tim M., Ashelby, Christopher W., Taylor, Andrea & Beaton, Katy, 2019, The value of regular monitoring and diverse sampling techniques to assess aquatic non-native species: a case study from Orkney, Management of Biological Invasions 10 (1), pp. 46-79 : 62

(13) Schizoporella japonica Ortmann, 1890

Status in U.K. – non-native.

Schizoporella japonica was first reported in British waters from Holyhead in July 2010 ( Ryland et al. 2014) but Loxton et al. (2017) found an archived sample from Plymouth that backdated the introduction to at least November 2009. It has a near continuous distribution in Scotland ( Loxton et al. 2017) and has been present in Orkney since at least May 2011 ( Ryland et al. 2014) where it is also found on human-made structures ( Want et al. 2017). It has been recorded in scrape and rapid assessment samples from several monitoring programme sites each year since 2014.