Phyllophora pseudoceranoides ((Gmel.) Newr. et R. Tayl., 1971)

Synonyms: Phyllophora membranifolia (Good. et Wood.) J.Ag. Hauck, 1885, Fucus pseudoceranoides Gmelin, 1768.

Common names: Russ: Fillofora psevdorogataya; Turk: Filofora.

Order (Scientific): GIGARTINALES.

Family (Scientific): PHYLLOPHORACEAE.

Taxonomic descriptions: Tallus are 3-20 cm chaotically branched. Stems finish on the top leaf-shape lamellas which have a triangular form. The base part of the stems is cylindrical, width about 1 mm, dark almost black colour. The leaf lamellas have no rib, they are thin and tender. The length of the lamellas are 1.5-3 cm, width at base 2-5 mm, at the top 10-20 mm. Same lamellas on the top dichotomic division. Tsistokarps developing on stems and lamelle are large at - 1.5-2 mm on the feet .

IUCN Status:
    World level:
    Black Sea Regional level:
    Subregion level: CE (Ukrainian sector)

Distribution: Accumulation in the north-western part of the “Zernov`s Phyllophora field”.

Habitat type, Critical habitats, Limiting factors: On stones and shells at a depth of 25-30m. High concentration of suspended matter. Diminution of light penetration.

Biology: Perennial. Ph. pseuduceranoides have tetrasporophit and two-housed gametophit.

Population trends: In the 1960s the biomasse comprised 10-350 g/m², stocks - 25·10³ tons. Currently in decline.

Threats: Decreasing transparence. High level of eutrophication.

Conservation measures taken: Included in the Red Data Book of the Ukraine.

Conservation measures proposed: Reduce concentrations of suspended matter. Reduce the level of the combination of phosphorus and nitrogen.

References:

1. Kalugina-Gutnik A.A. Phytobenthos of the Black Sea.-Kiev.:Naukova Dumka,1975.-245 p.
2. Red Book of the Ukraine. Plant`s World. -Kiev.: Ukr. entsykloped.,1996.-494 p.
3. Zinova A.D. Definition of green,brown and red algae of the southern seas of the USSR.-Leningrad.:Nauka,1967.-397 p.

Compiled by: G.Minicheva.