black sea red data book - Department of Biology

IUCN Status
World level:
Black Sea Regional level: VU
Subregion level: VU
Distribution, Habitat type, Critical habitats, Limiting factors. Found in Zernov's
fields; on rocky, gravely bottoms at depths of 0 to 60 m. A deterioration in water
transparency reduces light penetration and leads to the disappearance of this plant.
Biology. Formation of cystocarps in summer.
Population trends. A severe reduction of all three species has been recorded on the
Romanian shelf. In the 1950s, total biomass reached about 10 7
tonnes. In 1980, it had
declined to 14.10 5
tonnes, and in 1990 to 3-5.10 5
tonnes.
Threats. Decline in light energy penetration; eutrophication.
Conservation measures proposed. Improve the ecological conditions of the central
northwestern Black Sea; areas of the main Phyllophora beds to be closed to dragged
fishing gear disturbing the bottom; delimit ecological sanctuaries to protect unique
associated fauna.
References
Bavaru A., A. S. Bologa & H. V. Skolka, 1991. A checklist of the benthic marine
algae (except Diatoms) along the Romanian shore of the Black Sea. Rev. roum. Biol.,
Biol, veget. 36: 7-22.
Bologa, A. S., 1987-88. Annotated bibliography on the macrophytobenthos along the
Romanian Black Sea coast (1881-1986). Cercet. mar. 20/21: 353-384.
Bologa A. S., N. Bodeanu, A. Petran, V. Tiganus & Y. P. Zaitsev, 1995. Major
modifications of the Black Sea benthic and planktonic biota in the last three decades.
Bull. Inst, oceanogr. Monaco 15: 85-110.
Kalugina-Gutnik, A.A., 1975. Phytobenfhos of the Black Sea. Kiev, Naukova
Dumka: 245 pp.
Kaminer, K. M., 1987. Degradation of the phytocoenoses of Dzharylgachskiy Bay of
the north-western Black Sea as a result of several years anthropogenic load. In:
Hydrobiological investigation on the Ukraine in thel 1th Five-Year Plan. Kiev, 41-42.
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