Najas marina ssp. ehrenbergii


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Najas marina ssp. ehrenbergii
Species Authority: (A.Braun) L. Triest
Parent Species:
Common Name(s):
English Spiny Naiad

Assessment Information [top]

Red List Category & Criteria: Near Threatened ver 3.1
Year Published: 2010
Date Assessed: 2007-09-15
Assessor(s): Ali, M.M.
Reviewer(s): Grillas, P., Temple, H. (IUCN Species Programme), Rhazi, L. & de Bélair, G.
Najas marina ssp. ehrenbergii has a small area of occupancy (presumed to be less than 2,000 km² although it has not been quantified) and is considered to be declining. But it is found at more than 10 locations and is not severely fragmented. More research on its distribution is needed. It is therefore listed as Near Threatened.

Geographic Range [top]

Range Description: This species is endemic to North Africa and is found in Algeria, Tunisia, Libya and Egypt.
The area of occupancy is suspected to be less than 2,000 km² although it has not been quantified. The species is found at more than 10 locations and is not severely fragmented.
Algeria; Egypt; Libya; Tunisia
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: It is very rare in Egypt. There is no information on the population trend available but it is suspected to be declining.
Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: This species occurs in fresh and brackish waters.
Systems: Freshwater

Threats [top]

Major Threat(s): The major threats are competiton by introduced plants and intrinsic factors such as low dispersal.

Conservation Actions [top]

Conservation Actions: Research on population numbers and range, as well as habitat maintenance and conservation are needed.

Bibliography [top]

Boulos, L. 2005. Flora of Egypt, Monocotyledons (Alismataceae - Orchidaceae). Al Hadara Publishing, Cairo.

IUCN. 2010. IUCN Red List of Threatened Species (ver. 2010.2). Available at: (Accessed: 29 June 2010).

Citation: Ali, M.M. 2010. Najas marina ssp. ehrenbergii. The IUCN Red List of Threatened Species. Version 2015.2. <>. Downloaded on 31 August 2015.
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