Tangan-Tangan trees were introduced, primarily, as an erosion-prevention mechanism, due to the decimation of the landscape brought on by WWII. Remaining native forest occurs in small isolated fragments on steep slopes at low elevations and highland conservation areas of the island. Coconuts, papayas, and Thai hot peppers – locally called "donni' såli" or "boonie peppers" – are among the fruits that grow wild. Mango, taro root, breadfruit (locally called "Lemai"), and bananas are a few of the many foods cultivated by local families and farmers.