Next Article in Journal
Comparative Phylogenomics, a Stepping Stone for Bird Biodiversity Studies
Next Article in Special Issue
Assessment of Changes in the Structure of Zooplankton Communities to Infer Water Quality of the Caspian Sea
Previous Article in Journal
Marine Fungi: Biotechnological Perspectives from Deep-Hypersaline Anoxic Basins
Open AccessArticle

Species Diversity of Epilithon Diatoms and the Quality of the Waters of the Donuzlav Gulf Ecosystem (Crimea, the Black Sea)

A.O. Kovalevsky Institute of Biology of the Southern Seas of Russian Academy of Sciences, 2, Nakhimov Av., Sevastopol 299011, Russia
*
Author to whom correspondence should be addressed.
Diversity 2019, 11(7), 114; https://doi.org/10.3390/d11070114
Received: 13 June 2019 / Revised: 4 July 2019 / Accepted: 10 July 2019 / Published: 18 July 2019
(This article belongs to the Special Issue Freshwater Algal Diversity and Bio-Indication of Water Resources)
In this work, the species diversity of epilithon diatoms of Donuzlav Gulf (Crimean coastal waters of the Black Sea) is presented for the first time. A total of 60 taxa of Bacillariophyta belonging to 3 classes, 18 families and 34 genera were found. The largest number of species (45) of diatoms was observed in summer, and the smallest number of species (12) in winter. A total of 25 saprobity indicator species of diatoms was found on the epilithon, 12 taxa of which belong to a group of betamesosaprobionts—indicators of moderate organic pollution of water. Marine species comprise 55% and brackish-marine ones make up 37% of them, but no freshwater species were identified. The diatom community was dominated by cosmopolites (32%) and arctic–boreal–tropical species (27%). The maximal abundance (186.2 × 103 cells cm−2) and biomass (0.083 mg cm−2) of diatoms was noted in June 2018 at salinity 16.58‰ and T = 24.4 °C with the dominant cosmopolites species of Licmophora abbreviata and Cocconeis scutellum. The minimum values, 14.8 × 103 cells cm−2 and 0.005 mg cm−2, were observed in January 2019 at salinity 16.86‰ and T = 9.0 °C with the dominant Berkeleya rutilans and Nitzschia hybrida f. hyalina. The high values of BOD5, oxidizability, silicon, Norg and Porg were noted, indicating a certain degree of water pollution by domestic sewage. It has been shown that the pollution in the southwestern part of the Donuzlav Gulf is greatest since this part of the coast was populated most densely in comparison with the northern coast of the Gulf where there are no coastal settlements except for two mariculture farms. View Full-Text
Keywords: species diversity; diatoms; stones; bioindication; indicators; organic pollution; Crimean coastal waters; Donuzlav Gulf; the Black Sea species diversity; diatoms; stones; bioindication; indicators; organic pollution; Crimean coastal waters; Donuzlav Gulf; the Black Sea
Show Figures

Figure 1

MDPI and ACS Style

Ryabushko, L.I.; Lishaev, D.N.; Kovrigina, N.P. Species Diversity of Epilithon Diatoms and the Quality of the Waters of the Donuzlav Gulf Ecosystem (Crimea, the Black Sea). Diversity 2019, 11, 114.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop