1. Three new species of Gromia (Protista, Rhizaria) from western Greenland fjords

   • Andrew J. Gooday
   • Maria Holzmann
   • Jan Pawlowski

   Original Paper 19 April 2021 Pages: 1037 - 1053

   

2. Thermal responses of two sub-Antarctic notothenioid fishes, the black southern cod Patagonotothen tessellata (Richardson, 1845) and the Magellan plunderfish Harpagifer bispinis (Forster, 1801), from southern South America

   • Eloísa Mariana Giménez
   • María Eugenia Barrantes
   • María Eugenia Lattuca

   Original Paper 21 April 2021 Pages: 1055 - 1067

   

3. Zooplankton communities along a Southern Ocean monitoring transect at 110° E from three CPR surveys (Dec 2014, Jan 2015, Mar 2015)

   • Kunio T. Takahashi
   • Tomomi R. Takamura
   • Tsuneo Odate

   Original Paper 21 April 2021 Pages: 1069 - 1081

   

4. Contrast of warm and cold phases in the Bering Sea to understand spatial distributions of Arctic and sub-Arctic gadids

   • Matthew R. Baker

   Original Paper 22 April 2021 Pages: 1083 - 1105

   

5. Recent shift in biological communities: A case study from the Eastern European Russian Arctic (Bol`shezemelskaya Tundra)

   • Larisa B. Nazarova
   • Larisa A. Frolova
   • Olga A. Loskutova

   Original Paper 04 May 2021 Pages: 1107 - 1125

   

6. New insights into reproductive physiology in Antarctic fish: a trial in Lepidonotothen nudifrons

   • Manuel Novillo
   • Mariano Elisio
   • Esteban Barrera-Oro

   Original Paper 04 May 2021 Pages: 1127 - 1139

   

7. Does posture explain the kinematic differences in a grounded running gait between male and female Svalbard rock ptarmigan (Lagopus muta hyperborea) moving on snow?

   • Andres Marmol-Guijarro
   • Robert Nudds
   • Jonathan Codd

   Original Paper Open access 05 May 2021 Pages: 1141 - 1152

   

8. The occurrence of Nematoda in coastal sea ice on Svalbard (European Arctic) determined with the 18S small subunit rRNA gene

   • Vanessa Pitusi
   • Janne E. Søreide
   • Magnus Heide Andreasen

   Original Paper Open access 06 May 2021 Pages: 1153 - 1162

   

9. What is the impact of urban development and thermokarsting on arctic tundra pond zooplankton communities?

   • Mariana Vargas Medrano
   • Vanessa L. Lougheed

   Original Paper 07 May 2021 Pages: 1163 - 1174

   

10. Sea-ice habitat minimizes grazing impact and predation risk for larval Antarctic krill

    • Carmen L. David
    • Fokje L. Schaafsma
    • Hauke Flores

    Original Paper Open access 12 May 2021 Pages: 1175 - 1193

    

11. Mercury contamination of seabird and sea duck eggs from high Arctic Greenland

    • K. K. Burnham
    • F. K. Meyer
    • J. A. Johnson

    Short Note 20 April 2021 Pages: 1195 - 1202

    

12. Cold tolerance is similar but heat tolerance is higher in the alien insect Trichocera maculipennis than in the native Parochlus steinenii in Antarctica

    • L. R. Pertierra
    • P. Escribano-Álvarez
    • M. Á. Olalla-Tárraga

    Short Note 24 April 2021 Pages: 1203 - 1208

    

13. The first complete mitochondrial genomes of two species of charr, Salvelinus boganidae and Salvelinus elgyticus, from Lake El’gygytgyn (Chukotka)

    • Alla G. Oleinik
    • Lubov A. Skurikhina
    • Alexander A. Semenchenko

    Short Note 25 April 2021 Pages: 1209 - 1217

    

14. Cannibalism in southern giant petrels (Macronectes giganteus) at Nelson Island, Maritime Antarctic Peninsula

    • Júlia Victória Grohmann Finger
    • Denyelle Hennayra Corá
    • Lucas Krüger

    Short Note 05 May 2021 Pages: 1219 - 1222

    

15. Growth of baleen along the baleen rack is constant in balaenopterid whales

    • Alex Aguilar
    • Asunción Borrell

    Comment 11 May 2021 Pages: 1223 - 1225

    

16. Differential baleen growth and its consequences

    • Alexander J. Werth
    • Todd L. Sformo
    • J. Craig George

    Reply 11 May 2021 Pages: 1227 - 1228