This fertile area has long been the most populous part of New Zealand and the original kauri forest has mostly been removed. The logging and gum-tapping that caused this has stopped now and much of the remaining kauri forest is now protected in the Northland region and on the
Coromandel Peninsula. The largest stands of kauri are found in
Waipoua Forest with another large area in
Trounson Kauri Park south of
Aranga, both areas are on the west coast of Northland. Wildlife in the region is vulnerable to introduced predators such as the
Polynesian rat,
ferrets and
stoats to the extent that the strongest remaining populations of many plants, birds and reptiles are on offshore islands rather than North Island itself. Some North Island species have been introduced to the offshore as a preservation measure, while other species found there are indigenous to the small islands, including a number of lizards on the
Mercury Islands and the
Falla's skink on the Three Kings Islands. ==References==