Zostera noltii (Hornem, 1832)
Synonyms: Zostera nana Roth.
Common names: Rom: Iarba de mare; Russ: Vzmornik maliy; Turk: Ince deniz otu.
Order (Scientific): HELOBIALES.
Family (Scientific): POTAMOGETONACEAE.
Taxonomic description: Thin, branched rhizome stem 10-40 cm long. Narrow linear leaves, 5-20 (30) cm long, 0.5-2 mm broad, having 1-3 main nerves and 3-4 secondary nerves and emarginate point. Non-thickened peduncle under the sheat. Ear 1.5 cm long, having (3) 6-12 flowers. Ripe fruit completely smooth - VI-VIII.
Black Sea Regional level:
Subregion level: VU
Habitats type, Critical habitats, Limiting factors: Rocky and sandy bottoms of sea and littoral lakes. Mediterranean Sea, Baltic Sea, Caspian Sea, Karacum. Species belonging to arctic-northern area. Increasing turbidity; human exploitation (by fishermen).
Biology: Besides the utilization mentioned for the previous species, it is used as a substitute for artificial wool. It contains 14% proteins and 2.1% fats and can be used as food for swine.
Population trends: On the Romanian littoral, on the sandy-muddy bottoms in the Mamaia-Midia, Agigea and Mangalia zones, there were belts of this phanerogam till 1975-1980. Severe reduction after the hydrotechnical works for harbour building.
Threats: Exploitation, increasing turbidity causing diminution of light penetration.
Conservation measures taken: None.
Conservation measures proposed: Reduce pollution from coastal point sources.
Compiled by: A.Bologa, A.Bavaru, B.Öztürk.