Invasive non-native species: attack of the aliens

http://www.guardian.co.uk

Invasive non-native species: attack of the aliens

From green parakeets to grey squirrels, and tree fungi to water weeds, invasive non-native species are driving many British plants and animals to the brink of extinctionSend us your sightingsThere is a war going on in the parks, gardens, ponds, rivers and greenhouses of Britain. At stake is the future of the country’s native flora and fauna.