Open AccessMICROPHYTOBENTHOS DIATOMS OF THE BLACK SEA: BIODIVERSITY AND ECOLOGY
Author(s) -
L. I. Ryabushko,
Daria Balycheva,
V. I. Ryabushko
Publication year - 2017
Publication title -
ecologica montenegrina
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.534
H-Index - 10
eISSN - 2337-0173
pISSN - 2336-9744
DOI - 10.37828/em.2017.14.6
Subject(s) - periphyton , macrophyte , benthic zone , algae , ecology , biomass (ecology) , diatom , biology , hydrobiology , botany , aquatic environment
The results of original studies (1987–2016) of the floristic composition of diatoms of natural and anthropogenic substrates in different regions of the Black Sea at depths of 0–53 m are summarized. 350 taxa of Bacillariophyta were identified, 77% from them are benthic, 57% – marine, 29% – boreal and 25% – boreal-tropical. In the epilithon, 140 taxa were found, in the epiphyton of macrophytes – 254, the epizoon of the mussel Mytilus galloprovincialis Lam. – 154, on the skin of dolphins – 10 and in the periphyton of anthropogenic substrates – 194. The Сzekonowsky-Sörensen coefficient of species similarity depending on the ecotope varied from 54 to 64%. In both ecotopes of epizoon and periphyton 28 species were common. The maximum values of abundance (N), biomass (B) and the Shannon index of species diversity (H) of diatoms in all ecotopes were observed in the winter-spring season: epilithon – N =416•103 cells•cm-2, B=0.4 mg•cm-2,Н = 1,89; epiphyton – N=366.3•103 cells•cm-2,B=0.82 mg•cm-2, Н=3.03; epizoon – N=179.3•103 cells•cm-2, B=0,54 mg•cm-2, Н=3.81; periphyton at exposure of experimental plates from 1 to 13 months – N =2180.8•103 cells•cm-2, B=0.543 mg•cm-2, H=0.97–3.67 and with monthly exposure – N=1229•103 cells•cm-2, B=0.35 mg•cm-2, H=1.1–3.5. The questions of similarity and dissimilarity of qualitative and quantitative characteristics of microphytobenthos diatoms in different ecotopes and areas of the Black Sea are discussed.