U. V. Simakova
Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia
e-mail: yankazeisig@gmail.com
Received December 1, 2008; in final form, June 15, 2009
Abstract—We studied the characteristics of the Cystoseira (Cystoseira barbata C. Ag, Cystoseira crinita
(Desf.) Bory) community at the North Caucasian coast of the Black Sea under the conditions of the pronounced
sea-bottom relief, namely, ridge- and steplike benches. It is shown that a number of parameters of the compo-
sition and community structure (the species richness, the diversity indices, the biomass, the dominance pattern,
and the epiphyte : basephyte ratio) are influenced more strongly by the sea bottom relief than by the depth. Pre-
sumably, this may be due to the variation of the integrated water velocity over different relief elements. The
major dominants are shown to have different ecologies: C. barbata inhabits hollows, where the wave effect is
minor, while C. crinita prefers to inhabit the ridge tops, i.e., the biotopes with increased hydrodynamic activity.
DOI: 10.1134/S0001437009050087
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