The project was started when unusual birds was found dead in Chilbal-do(island), was incorporated into Dadohaehaesang National Park in 2011. Goals of the project are removing noxious plant and vegetation restoration for reducing the mortality rate of birds.
Chilbal-do(island) is the place, designated as a natural monument and raised to IUCN category Ia in 2016, that is managed as Korea national park spacially protected area. And there is middle stopover of unusual birds, so east asian-australasian flyway partnership(EAAFP) certificated Chilbal-do(island) as important habitate for migratory birds networking.
There has been an outbreak of ecological disturbance by past manned lighthouse and residents. As a result, noxious plant, for example japanese chaff-flower, increased rapidly and more than 400 birds died each year because bird's wing hangs on its hook shape plant seeds.
Accordingly, Korea national park service(KNPS) carried forward forming a consultative group with Shinan-gun(district), Koguryeo college etc,. and the project for removing noxious plants, japanese chaff-flower, and replacing native plants, Coastal rock sedge, was started from 2014 to 2017.
As a result, KNPS removed noxious plan, japanese chaff-flower, 34,100㎡, and replace native plant, coastal rock sedge 20,500㎡. So the monitering data in 2017 showed that rate of dead birds, specially swinhoe's storm petrel, decreased 97 percent(%).
