black sea red data book - Department of Biology

Population trends. A sharp decline in numbers since the 1970s, with a reduction of
50-60% over the last 10 years.
Threats. Pollution of the surface microlayer and eutrophication causing hypoxia at
the bottom.
Conservation measures taken. None.
Conservation measures proposed. Include in Black Sea Red Data Book. Reduce
Black Sea pollution.
References
Dolgopolskaya, M. A., 1969. Otryad Calanoida G.O. Sars (Order Calanoida G.O.
Sars). In Opredelitel fauny Chernogo I Azovskogo morey (A key to Black Sea and
Sea of Azov fauna). Kiev, Naukova Dumka 2: 34-48 (in Russian).
Newell, G. E. & R. C. Newell, 1966. Marine Plankton, a practical guide. London,
Hutchinson Educational: 221 pp.
Zaitsev, Y. P., 1971. Marine Neustonology. Jerusalem, Israel Program for Scientific
Translations: 207 pp.
Zaitsev, Y. & V. Mamaev, 1997. Marine Biological Diversity in the Black Sea. A
Study of Change and Decline. New York, United Nations Publications: xv + 208 pp.
Compiled by Y. Zaitsev.
327