Only monoecious plants have been discovered.
滋擾人類: Hydrilla makes recreational activities difficult by entangling boat motors and choking swimming areas.
競爭: Hydrilla grows tall and dense and displaces other aquatic life thereby reducing biodiversity.
經濟 /民生: Overabundant Hydrilla makes it difficult for fish to find their prey, causing a decline in valuable sport fisheries. Recreational areas lose visitors and their associated monetary spending when Hydrilla clogs boat motors and entangles swimmers.
最後修改 ： 29/12/2003 11:44:43 a.m.