Be a citizen scientist and stop the spread of invasive species in Britain

'The Observer Ethical awards have teamed up with the University of Hull to help record data on invasive species, so that scientists can monitor their spread and their effect on their local environment. The list of Britain's top 10 unwanted non-native invasive species is listed below. Over the next few months we're asking you to keep an eye out for these species and to photograph and catalogue whenever you can, sending this vital data off to the organisations listed in each box'

http://www.guardian.co.uk/environment/gallery/2012/jan/15/citizen-scientist-invasive-species-pictures