black sea red data book - Department of Biology

of Tritia reticulata., Ceritium vulgatum, or, sometimes, of young Rapana thomasiam,
in which the unarmored Diogenes conceals its soft abdomen.
Population trends. Strong decline in numbers since the late 1970s. A reduction by
60-70% over the last 10 years.
Threats. Bottom hypoxia provoked by eutrophication.
Conservation measures taken. None.
Conservation measures proposed. Include in Black Sea Red Data Book. Reduce
Black Sea coastal zone pollution.
References
Kiseleva, M. I., 1992. Changes in bottom communities on the sand biotope near the
south-western Crimean coast. In: Mnogoletnye izmenenya zoobentosa Chernogo
morya (Multiannual changes in the Black Sea zoobenthos). Kiev, Naukova Dumka:
pp. 62-69 (in Russian).
Povchun, A. S., 1992. Changes in the bottom communities of Karkinitsky Bay. In:
Mnogoletnye izmenenya zoobentosa Chernogo morya (Multiannual changes in the
Black Sea zoobenthos). Kiev, Naukova Dumka: 105-138 (in Russian).
Compiled by Y. Zaitsev.
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