Restoration of seabird habitats in Chilbaldo island

Restoration of seabird habitats in Chilbaldo island

Korea National Park Service (KNPS) has successfully restored seabird breeding grounds of Chilbaldo Island in the Dadohaehaesang National Park, which is a stopover site for over 50 species of rare seabirds.

The lighthouse in Chilbaldo island was operated until 1990’s, which allowed people and alien species such as Artemisia indica, Brassica juncea, and Miscanthus sinensis to the island. They have gradually prospered until they impeded the growth of native species, which prevent birds from making nests for breeding.

In particular, Achyranthes bidentata is a perennial plant that produces hook-shaped seeds in September and October. The wings of seabirds get entangled in them. It makes birds unable to flip their wings, driving them to death from exhaustion.

Since 2014, KNPS has been restoring the habitats by intensively removing alien species and planting the native Carex boottiana Hook. & Arn. to allow seabirds to make nests stably between bedrock and underplant roots.