black sea red data book - Department of Biology

Distribution. Mostly in the north-western part of Zernov's Phyllophora fields.
Habitat type, Critical habitats, Limiting factors. On stones and shelly bottoms at a
depth of 25-30 m. High concentration of suspended matter highly detrimental. Plant
suffers from low light penetration.
Biology. Perennial. P. pseuduceranoid.es has tetrasporophites and two-housed
gametes.
Population trends. In the 1960s, the biomass reached 10-350 g.m" 2
, and stocks were
of the order of 25-10 3
tons. Currently in decline.
Threats. Decreased water transparency. 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 phosphorus and nitrogen.
References
Kalugina-Gutnik, A. A., 1975. Phytobenthos of the Black Sea. Kiev, Naukova
Dumka: 245 pp.
Red Book of the Ukraine, 1996. Plant World, 1996. Kiyiv, Ukrainskyi
Encyklopediya Publ.: 494 pp.
Zinova, A. D., 1967. Definition of green,brown and red algae of the southern seas of
the USSR. Leningrad, Nauka: 397 pp.
Compiled by G. Minicheva.
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