Invasion information |
Range in Japan |
Ogasawara (Bonin) and southern Ryukyus. |
|
Origin |
Unknown. |
Date |
Introduced to Ogasawara since 1862 (large scale introduction was since 1879). Introduced to Sakishima since 1910. |
Route |
Deliberate: For afforestation, green manure, animal feed, sand erosion protection, fuel, pulp, etc. |
Impact |
Competition with native species. Allelopathy. Nutrient enrichment (soil nitrogen). Native organism(s) affected: Native plants. |
Regulation in Japan |
100 of the World's Worst Invasive Alien Species. |
Introduced range in other countries |
Wide area of tropical and subtropical region, such as SE Asia. |