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Halophila ovata

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Taxonomy [top]

Kingdom Phylum Class Order Family
PLANTAE TRACHEOPHYTA LILIOPSIDA HYDROCHARITALES HYDROCHARITACEAE

Scientific Name: Halophila ovata
Species Authority: Gaudich.
Common Name(s):
English Species code: Hq, Species code: Hv
Taxonomic Notes: This species is a member of the Halophila ovalis complex.  It is listed as a synonym of H. gaudichadii and some consider H. minor as a synonym of H. ovata. Here it is retained as species until the taxonomy is clarified.

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2010
Date Assessed: 2007-10-17
Assessor(s): Short, F.T. & Waycott, M.
Reviewer(s): Livingstone, S., Harwell, H. & Carpenter, K.E.
Justification:
This species is widespread and common. Although there are likely localized declines due to coastal development throughout its range, population trends are estimated to be stable. It is listed as Least Concern.

Geographic Range [top]

Range Description: Halophila ovata is found in the Pacific in southern China, Indonesia, and in Papua New Guinea, northern Australia, Fiji and Samoa.

In the Indian Ocean, H. ovata occurs from Shark Bay in Western Australia north through the Timor Sea and across southern Indonesia. This species also occurs in the Andaman and Nicobar Islands, the east coast of India, and some of the west coast of India, the Lakshadweep Islands and the northern Red Sea.
Countries:
Native:
Australia; China; Egypt; Fiji; India; Indonesia; Papua New Guinea; Samoa
FAO Marine Fishing Areas:
Native:
Indian Ocean – eastern; Indian Ocean – western; Pacific – eastern central; Pacific – northwest; Pacific – western central
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: This species is relatively common. Population trend is estimated to be stable.
Population Trend: Stable

Habitat and Ecology [top]

Habitat and Ecology: This species is fast-growing and pioneering. It is found in a variety of habitats, including sand and sandy mud bottoms, and is often found in exposed areas. Reproduction is mainly vegetative (Jacobs and Dicks 1985). In the Red Sea, it occurs at 20 m depth.
Systems: Marine

Threats [top]

Major Threat(s): This species is threatened by coastal development and changes in shoreline land-use. It is also affected by water quality from sedimentation, trawling and mechanical damage from boats. These are local threats and are not thought to be causing serious declines on a global scale although they may cause localized declines.

Conservation Actions [top]

Conservation Actions: There are no species-specific conservation measures for this species.

More research is needed on this species taxonomy, and a review of distribution is needed.

Bibliography [top]

Green, E.P. and Short, F.T. 2003. World Atlas of Seagrasses. University of California Press, Berkeley.

IUCN. 2010. IUCN Red List of Threatened Species (ver. 2010.3). Available at: http://www.iucnredlist.org. (Accessed: 2 September 2010).

Jacobs, R.P.W.M. and Dicks, B. 1985. Seagrasses in the Zeit Bay area and at Ras Gharib (Egyptian Red Sea coast). Aquatic Botany 23: 137-147.


Citation: Short, F.T. & Waycott, M. 2010. Halophila ovata. The IUCN Red List of Threatened Species. Version 2014.2. <www.iucnredlist.org>. Downloaded on 26 October 2014.
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