1. Complex Analysis of the Plankton Community of two Brown-Water Bog Lakes in the European Part of Russia

   • M. V. Umanskaya
   • S. V. Bykova
   • E. N. Unkovskaya

   STRUCTURE AND FUNCTIONING OF AQUATIC ECOSYSTEMS 26 January 2021 Pages: 473 - 484

   

2. Features of Biomorph of Hydrilla verticillata (Hydrocharitaceae)

   • A. N. Efremov
   • A. A. Pushkina
   • Ya. V. Bolotova

   BIOLOGY, MORPHOLOGY, AND SYSTEMATICS OF HYDROBIONTS 26 January 2021 Pages: 485 - 495

   

3. Micromorphology of Relict Hydrophytes from the Lower Amur Region

   • D. Ju. Tsyrenova

   BIOLOGY, MORPHOLOGY, AND SYSTEMATICS OF HYDROBIONTS 26 January 2021 Pages: 496 - 502

   

4. Expansion of Distribution and Morphology of Diatom Nupela giluwensis

   • A. M. Glushchenko
   • M. S. Kulikovskiy

   BIOLOGY, MORPHOLOGY, AND SYSTEMATICS OF HYDROBIONTS 26 January 2021 Pages: 503 - 506

   

5. Convergences in the Architectonics of Tremadodes Musculature and the Relationship Between the Concepts of Convergence and Parallelism

   • M. V. Yastrebov
   • E. N. Glagoleva
   • I. V. Yastrebova

   BIOLOGY, MORPHOLOGY, AND SYSTEMATICS OF HYDROBIONTS 26 January 2021 Pages: 507 - 515

   

6. Patterns of Phenetic Diversity and Taxonomy of the Common Rudd Scardinius erythrophthalmus (Cypriniformes, Cyprinidae) from the Water Bodies of Russia and Adjacent Countries

   • A. V. Kozhara
   • A. S. Mavrin
   • A. N. Mironovsky

   BIOLOGY, MORPHOLOGY, AND SYSTEMATICS OF HYDROBIONTS 26 January 2021 Pages: 516 - 527

   

7. Copepod Cyclops bohater (Crustacea, Copepoda) in the European Part of Russia

   • V. I. Lazareva
   • S. M. Zhdanova

   BIOLOGY, MORPHOLOGY, AND SYSTEMATICS OF HYDROBIONTS 26 January 2021 Pages: 528 - 538

   

8. Comparative Analysis of Chlorophyll a Content in Freshwater and Marine Waterbodies

   • L. E. Sigareva
   • T. G. Koreneva
   • N. A. Timofeeva

   PHYTOPLANKTON, PHYTOBENTHOS, PHYTOPERIPHYTON 26 January 2021 Pages: 539 - 548

   

9. Interannual Changes in Phytoplankton of the Iriklinsky Reservoir

   • E. A. Dzhaiani

   PHYTOPLANKTON, PHYTOBENTHOS, PHYTOPERIPHYTON 26 January 2021 Pages: 549 - 555

10. Diversity and Peculiarities of the Formation of Stomatocysts of the Chrysophyceae in a Waterbody in the South of Western Siberia

    • O. P. Bazhenova
    • I. Yu. Igoshkina

    PHYTOPLANKTON, PHYTOBENTHOS, PHYTOPERIPHYTON 26 January 2021 Pages: 556 - 565

    

11. Global Occurrence of Cyanobacteria: Causes and Effects (Review)

    • V. I. Sukharevich
    • Yu. M. Polyak

    PHYTOPLANKTON, PHYTOBENTHOS, PHYTOPERIPHYTON 26 January 2021 Pages: 566 - 575

    

12. Composition, Structure, and Distribution of the Phytoplankton of a Highly Mineralized Karst Lake

    • E. L. Vodeneeva
    • A. G. Okhapkin
    • K. O. Skameykina

    PHYTOPLANKTON, PHYTOBENTHOS, PHYTOPERIPHYTON 26 January 2021 Pages: 576 - 584

    

13. Long-Term Dynamics of Heterotrophic Bacterioplankton in a Large Eutrophic Reservoir

    • A. I. Kopylov
    • D. B. Kosolapov
    • I. S. Mikryakova

    AQUATIC MICROBIOLOGY 26 January 2021 Pages: 585 - 591

    

14. Macrozoobenthos Communities of Springs and Streams of the Eastern Circum-Pontic Region

    • D. M. Palatov
    • M. V. Chertoprud

    ZOOPLANKTON, ZOOBENTHOS, ZOOPERIPHYTON 26 January 2021 Pages: 592 - 604

    

15. Zooplankton in the Lake Tana Shore Zone (Ethiopia) at the Beginning of the Dry Season

    • A. V. Krylov
    • W. Zelalem
    • F. N. Shkil

    ZOOPLANKTON, ZOOBENTHOS, ZOOPERIPHYTON 26 January 2021 Pages: 605 - 612

    

16. Exogenous Feeding in the Early Life Stages of Sturgeon (Acipenseridae) (Review)

    • G. I. Ruban

    ICHTHYOLOGY 26 January 2021 Pages: 613 - 619

17. Seasonal Dynamics of the Ratio of Rheoreaction Types of Roach Rutilus rutilus

    • D. S. Pavlov
    • V. Yu. Parshina
    • V. V. Kostin

    ICHTHYOLOGY 26 January 2021 Pages: 620 - 626

    

18. Suckermouth-armored Catfish (Siluriformes: Loricariidae) of Central and Southern Vietnam

    • I. A. Stolbunov
    • Tran Duc Dien
    • J. W. Armbruster

    ICHTHYOLOGY 26 January 2021 Pages: 627 - 639

    

19. Growth and Early Maturation of Brown Trout Salmo trutta in the Alatsoya River (Republic of Karelia)

    • E. D. Pavlov
    • A. G. Bush
    • D. S. Pavlov

    ICHTHYOLOGY 26 January 2021 Pages: 640 - 647

    

20. Unusual Thermoregulatory Behavior of Anadromous and Resident Larvae of the River Lamprey Lampetra fluviatilis (Petromyzontidae)

    • A. K Smirnov
    • V. K. Golovanov
    • A. V. Kucheryavyy

    ICHTHYOLOGY 26 January 2021 Pages: 648 - 654

    

21. Changes in the Gill Lipid Composition of Freshwater Mussel Anodonta cygnea under the Influence of Copper in Various Concentrations

    • N. N. Fokina
    • I. V. Sukhovskaja
    • N. N. Nemova

    ECOLOGICAL PHYSIOLOGY AND BIOCHEMISTRY OF HYDROBIONTS 26 January 2021 Pages: 655 - 663

    

22. Structural Organization of Plasma Proteins as a Factor of Capillary Filtration in Pisces (Review)

    • A. M. Andreeva

    ECOLOGICAL PHYSIOLOGY AND BIOCHEMISTRY OF HYDROBIONTS 26 January 2021 Pages: 664 - 673

    

23. Biomarkers of Oxidative Stress in Freshwater Bivalve Mollusks (Review)

    • Y. S. Klimova
    • G. M. Chuiko
    • E. S. Ivanova

    ECOLOGICAL PHYSIOLOGY AND BIOCHEMISTRY OF HYDROBIONTS 26 January 2021 Pages: 674 - 683

24. Mercury Content in Water Beetles (Coleoptera: Dytiscidae, Hydrophilidae) of Different Size Classes

    • Yu. G. Udodenko
    • A. A. Prokin
    • E. S. Ivanova

    AQUATIC TOXICOLOGY 26 January 2021 Pages: 684 - 690

    

25. Accumulation of Radionuclides in the Marsh Frog Pelophylax ridibundus in the Zone of a Nuclear Plant

    • D. L. Berzin
    • M. Ja. Chebotina
    • V. P. Guseva

    AQUATIC TOXICOLOGY 26 January 2021 Pages: 691 - 696

    

26. Feature of Morphology of Pistillate Flowers of Typha pontica Klok. fil. & A. Krasnova (Typha L., Typhaceae) in Water Bodies in the South of Eastern Europe

    • A. N. Krasnova
    • T. N. Polshina

    SHORT COMMUNICATIONS 26 January 2021 Pages: 697 - 700