Population of the ngaio weevil (Anagotus stephenensis) on Stephens Island/Takapourewa
Stephens Island is a remote island in western Cook Strait, three kilometres north of D’urville Island. It was heavily deforested by fire and grazing following the building of a lighthouse in 1894, removing around 90% of the forest cover. Presently, the island consists of small patches of original forest, which cover approximately 12% of the island area. The remainder of the island’s vegetation consists of vines, tall and short grass, scrub and areas of regenerating forest, where trees have been planted since 1990.