Its colony of Variable Damselfly is of national importance .
Boultham Mere , created in 1989 , is a nature reserve situated near a railway line and looked after by the Lincolnshire Wildlife Trust .
Boultham Mere 's colony of Variable Damselfly is of national importance .
Boultham Mere , created in 1989 , is a nature reserve situated near a railway line and looked after by the Lincolnshire Wildlife Trust .