Cryptocoryne crispatula

Habitats and sites in which this species occurs are threatened by the factors which affect all wetlands in the region, including deforestation and the secondary effects of this, as well as urbanisation and habitat degradation. The only record of a direct threat is of a site in the downstream reaches of a river, where forest clearance had been extensive, run-off was immense and as a result the riverbeds were completely washed out, devoid of any vegetation and even large stones were dislodged (J. Maxwell pers. comm. 2011). It is almost certainly also threatened by riverine development, river pollution, watershed deforestation and for some varieties possibly by collecting for trade.
This species may also be threatened by dam construction and any other actions which modify the flow character of the River Mekong and its larger tributaries, as well as logging or clear-felling the banks or floodplain of the river. This species, as with all of the Cryptocoryne species which occur on the Mekong River, is potentially severely threatened by over-grazing during the dry season.

There are no conservation actions specifically in place for this species. It is known to occur in three protected areas: Khao Yai National Park, Khlong Naka Game Sanctuary, Phou-Khao-Kuay National Park, Phu Khieo Wildlife Sanctuary and Umphang Wildlife Sanctuary in Thailand; and in Yod Dome Wildlife Sanctuary in Vietnam. It would be useful to have up-to-date information on the conservation status of populations throughout its range to assess the impacts of threats such as forest clearance.