1. Long-Term Changes in the Main Indicators of the Trophic State of the Large Plain Reservoir under the Influence of Climatic Transformation and Successional Processes

   • E. A. Shashulovskaya
   • S. A. Mosiyash
   • I. N. Dalechina

   STRUCTURE AND FUNCTIONING OF AQUATIC ECOSYSTEMS 12 December 2021 Pages: 627 - 637

   

2. Comparative Morphology of the Genus Hydrocharis L. (Hydrocharitaceae)

   • A. N. Efremov
   • V. S. Grishina
   • E. N. Tchatchouang

   BIOLOGY, MORPHOLOGY AND SYSTEMATICS OF HYDROBIONTS 12 December 2021 Pages: 638 - 651

   

3. Morphology and Species Composition of Centrohelid Heliozoans (Centroplasthelida) from the Continental Lowland River with Salinity Gradient

   • E. A. Gerasimova

   BIOLOGY, MORPHOLOGY AND SYSTEMATICS OF HYDROBIONTS 29 September 2021 Pages: 652 - 661

   

4. Landmark Based Morphometric Variations among Indian Major Carps

   • A. K. Dwivedi

   BIOLOGY, MORPHOLOGY AND SYSTEMATICS OF HYDROBIONTS 12 December 2021 Pages: 662 - 669

   

5. Phytoplankton As an Indicator of the Modern Ecological State of the Novosibirsk Reservoir

   • O. P. Bazhenova
   • V. V. Mikhailov

   PHYTOPLANKTON, PHYTOBENTHOS, PHYTOPERIPHYTON 12 December 2021 Pages: 670 - 678

   

6. Long-Term Dynamics of Chlorophyll in Plankton of Different Sites in a Large Plain Reservoir

   • N. M. Mineeva

   PHYTOPLANKTON, PHYTOBENTHOS, PHYTOPERIPHYTON Open access 12 December 2021 Pages: 679 - 690

   

7. Phytoplankton Diversity and Environmental Drivers in a Backwater Inlet of Central Kerala, Southwest India

   • P. V. Divya
   • M. G. Sanilkumar

   PHYTOPLANKTON, PHYTOBENTHOS, PHYTOPERIPHYTON 12 December 2021 Pages: 691 - 698

   

8. Taxonomic and Community Composition of Zooperiphyton in Forest-Tundra Lakes (Western Siberia)

   • T. A. Sharapova
   • A. A. Gerasimova
   • A. G. Gerasimov

   ZOOPLANKTON, ZOOBENTHOS, ZOOPERIPHYTON 12 December 2021 Pages: 699 - 708

   

9. Estimating the Biodiversity Level of the Pechora River Delta Freshwater Ecosystems by the Structure of Bottom Communities of Cladocera, Copepoda, and Oligoсhaeta

   • M. A. Baturina
   • E. B. Fefilova

   ZOOPLANKTON, ZOOBENTHOS, ZOOPERIPHYTON 12 December 2021 Pages: 709 - 721

   

10. Current Data on Sakhalin Sturgeon Acipenser mikadoi (Acipenseridae, Acipenseriformes) Biology (Review)

    • E. V. Mikodina
    • G. I. Ruban

    ICHTHYOLOGY 12 December 2021 Pages: 722 - 731

    

11. Growth Properties of Endemic Aphanius marassantensis in Hirfanlı Reservoir, Turkey

    • Semra Benzer

    ICHTHYOLOGY 28 September 2021 Pages: 732 - 738

    

12. Indicators of Cardiac Activity and Oxidative Stress in the Mollusk Anodonta cygnea Under Short-Term Salt Test Load as Biomarkers for Assessing the State of the Organism and the Quality of the Environment

    • S. V. Kholodkevich
    • G. M. Chuiko
    • D. S. Pesnya

    ECOLOGICAL PHYSIOLOGY AND BIOCHEMISTRY OF HYDROBIONTS 12 December 2021 Pages: 739 - 746

    

13. Content of Methemoglobin in the Blood of Teleost Fish: Effect of Environmental Factors and Natural States of the Organism (Review)

    • A. A. Soldatov

    ECOLOGICAL PHYSIOLOGY AND BIOCHEMISTRY OF HYDROBIONTS 12 December 2021 Pages: 747 - 757

14. Comparative Aspects of Hypoxia and Hydrogen Sulfide Effects on the Activity of Oxidoreductases in the Gills and Brain of the Sea Ruff Scorpaena porcus

    • I. V. Golovina
    • E. E. Kolesnikova

    ECOLOGICAL PHYSIOLOGY AND BIOCHEMISTRY OF HYDROBIONTS 12 December 2021 Pages: 758 - 765

    

15. Effects of Polymetallic Ore Occurrences on Mercury Accumulation by Aquatic Biota in River Ecosystems

    • M. I. Shapovalov
    • V. A. Gremyachikh
    • V. T. Komov

    AQUATIC TOXICOLOGY Open access 12 December 2021 Pages: 766 - 776

    

16. Toxicity of Bottom Sediments of the Rybinsk Reservoir According to Long-term Biotesting Data: Report 1. Toxicological Studies

    • I. I. Tomilina
    • R. A. Lozhkina
    • M. V. Gapeeva

    AQUATIC TOXICOLOGY 12 December 2021 Pages: 777 - 787

    

17. Organ Fusion as a Mode of Organ Evolution

    • M. V. Yastrebov
    • I. V. Yastrebova

    BRIEF COMMUNICATIONS 12 December 2021 Pages: 788 - 791

18. Mycoparasite Infection of Daphnia cucullata Sars, 1862 (Crustacea, Cladocera, Daphniidae) in Lake Pleshcheyevo (Yaroslavl Oblast, Russia)

    • L. V. Voronin
    • S. M. Zhdanova

    BRIEF COMMUNICATIONS 12 December 2021 Pages: 792 - 796

    

19. Minimum Cations Concentrations in Water Required for Maintanance of Ion Balance between the Amur Sleeper Perccottus glenii (Pisces) and the External Environment

    • V. I. Martemyanov
    • A. S. Mavrin
    • L. A. Shuman

    BRIEF COMMUNICATIONS 28 September 2021 Pages: 797 - 802