NATURE … shows us, in no uncertain manner the disturbing effect of introducing foreign species into places that they just do not naturally belong. Plant’s,insects animals etc, that have made their way to our shores, either by mistakenly introduced by man or otherwise ! can be found below.
These highly invasive and hostile invaders cost Britain countless billions of pounds to control. One day they shall become unmanageable.
What happens then I wonder ?
Red-eared terrapins, originally from the US, are foot-long former pets that can terrorise ducklings.
Some invaders pose a risk to human health, like this giant hogweed, whose sap causes blistering.
The Department for Environment, Food and Rural Affairs (Defra) says that non-native species, such as this floating pennywort, damage Britain’s wildlife and cost the economy some £2bn a year
Some of Britain’s best loved wildlife, including bluebells, red squirrels and water voles, are threatened by invasive species. The red squirrel has suffered since the introduction in the 19th century of the stronger, more adaptable, grey squirrel
The Azolla fern, a fast-growing floating aquatic plant, is capable of spreading completely over lake surfaces in a matter of months
British bluebells are threatened because they hybridise with Spanish bluebells
Japanese knotweed is known in its native language as Itadori, which means simply “strong plant”. Experts have put the cost of removing the species from Britain at £1.6bn. The plant has no natural enemies here and causes problems through rapid invasion of habitats, exclusion of other plants, and damage to property.
An American mink. Farmed until the 1980s, hungry escaped minks are blamed for the collapse in water vole numbers. Water voles have declined by 90% since 1990 because of habitat loss and the spread of American mink which prey on them.