Halophila australis 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Liliopsida Alismatales Hydrocharitaceae

Scientific Name: Halophila australis Doty & B.C.Stone
Common Name(s):
English Species Code: Ha
Taxonomic Notes: This species is often difficult to distinguish from H. ovalis.

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2010
Date Assessed: 2007-10-17
Needs updating
Assessor(s): Short, F.T., Carruthers, T.J.R., Waycott, M., Kendrick, G.A., Fourqurean, J.W., Callabine, A., Kenworthy, W.J. & Dennison, W.C.
Reviewer(s): Livingstone, S., Harwell, H. & Carpenter, K.E.
This species is listed as Least Concern as there are no known major threats causing declines in the current range. There are, however, taxonomic issues with this species due to the difficulties in distinguishing it from H. ovalis.

Geographic Range [top]

Range Description:Halophila australis is endemic to Australia, occurring along the southern coast from Perth to Victoria and in northern Tasmania.
Countries occurrence:
FAO Marine Fishing Areas:
Indian Ocean – eastern; Pacific – southwest
Additional data:
Lower depth limit (metres):15
Upper depth limit (metres):1
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:There is no specific population information for H. australis, but the population trend is thought to be stable. This species is difficult to distinguish from H. ovalis except when flowering.
Current Population Trend:Stable
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:Halophila australis is a temperate species growing in the southern seas of Australia, with rapid growth, high turn-over and wide ecological range. It is considered a pioneering species.
Generation Length (years):4

Threats [top]

Major Threat(s): Localized threats in the region are coastal development from industry, pipelines, and communication cables, mining and dredging, eutrophication, aquaculture, farming, direct physical damage by recreational and commercial boating activities, and to some extent trawling activities. Light reduction due to high sediment loads in water is also a threat to this species (Green and Short 2003).

Conservation Actions [top]

Conservation Actions: Halophila australis is protected by the Fisheries Act, National Park, and Marine Park Acts (Green and Short 2003).

Citation: Short, F.T., Carruthers, T.J.R., Waycott, M., Kendrick, G.A., Fourqurean, J.W., Callabine, A., Kenworthy, W.J. & Dennison, W.C. 2010. Halophila australis. The IUCN Red List of Threatened Species 2010: e.T173371A7001541. . Downloaded on 23 July 2018.
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