Abstract
Analysis of data on processing samples of macrophytobenthos was used to determine the species richness and composition of Zostera marina and Z. noltei communities in the Taman Bay of the Sea of Azov. The study has shown a weak statistically significant relationship between the degree of dominance of these species and the species richness of communities on an area of 0.25 m2; this relationship can be explained by the “species-energy” theory. If the total biomass of associated species in homogeneous areas was approximately the same, the number of associated species growing in large areas in communities with a high degree of Z. marina and Z. noltei dominance was no less than in small areas with a low degree of Zostera dominance. The similarity (difference) of the species composition of communities with a high and a low degree of Z. marina and Z. noltei dominance was approximately the same. The occurrence of most macroalgal species almost did not depend on the density of Zostera thickets, and an increase in the degree of Zostera dominance could represent a danger only for a few species, such as charophytes Lamprothamnium papulosum and Chara baltica, endemic green algae Ulva maeotica, and the yellow–green algae Vaucheria dichotoma.
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This work was supported by the Russian Foundation for Basic Research (grants nos. 16-04-00228 and 20-04-00364).
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Afanasyev, D.F., Sushkova, E.G. & Akatov, V.V. The Impact of Zostera marina Linnaeus 1753 and Zostera noltei Hornemann 1832 (Alismatales: Monocots) on the Species Richness and Coenotic Diversity of the Macrophythobentos of the Taman Bay of the Sea of Azov. Russ J Mar Biol 48, 166–174 (2022). https://doi.org/10.1134/S1063074022030026
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DOI: https://doi.org/10.1134/S1063074022030026