1. First occurrence of Cylindrospermopsin in the Azores (Lake São Brás, S. Miguel Island)

   • Rita Cordeiro
   • Joana Azevedo
   • Vítor Gonçalves

   Rapid communication 15 April 2021 Pages: 269 - 275

   

2. Distribution patterns and niche segregation of three closely related Japanese ephemerid mayflies: a re-examination of each species’ habitat from “megadata” held in the “National Census on River Environments”

   • Seiya Okamoto
   • Koji Tojo

   Research paper 04 March 2021 Pages: 277 - 287

   

3. Litter decomposition of exotic and native plant species of agricultural importance in Amazonian streams

   • Viviane Caetano Firmino
   • Leandro Schlemmer Brasil
   • Leandro Juen

   Research paper 27 March 2021 Pages: 289 - 297

   

4. Lipid and fatty acid composition of scavenging amphipods Ommatogammarus spp. from different depths of lake Baikal

   • Svetlana N. Pekkoeva
   • Viktor P. Voronin
   • Svetlana A. Murzina

   Research paper 05 May 2021 Pages: 299 - 311

   

5. Benthic macroinvertebrates of tropical streams: functional and trophic diversity of the Lacantún River, Mexico

   • Daniela Cortés-Guzmán
   • Javier Alcocer
   • Kenneth W. Cummins

   Research paper 24 May 2021 Pages: 313 - 328

   

6. Long-term changes in morphological traits of Daphnia pulex in Lake Fukami-ike, Japan

   • Yurie Otake
   • Hajime Ohtsuki
   • Takehito Yoshida

   Research paper 26 May 2021 Pages: 329 - 336

   

7. Volcanic and environmental impacts on subfossil chironomids from Northern Patagonia (Argentina) over the last 700 years

   • M. Noel Serra
   • Julieta Massaferro
   • Gustavo Villarosa

   Research paper 01 July 2021 Pages: 337 - 346

   

8. Nematode fauna associated with freshwater microbialites in Bacalar Lake, Quintana Roo, Mexico

   • Alberto de Jesús-Navarrete
   • Alfredo Yanez-Montalvo
   • Abel Vargas-Espósitos

   Research paper 12 July 2021 Pages: 347 - 355

   

9. Antibiotic resistance of fecal indicator bacteria from fishponds and nearby water sources in the Ayeyarwady Delta region of Myanmar

   • Shane Htet Ko
   • Anil Kumar Anal
   • Hiroshi Sakai

   Asia/Oceania report 03 July 2021 Pages: 357 - 362

   

10. Application of environmental DNA metabarcoding in a lake with extensive algal blooms

    • Qianqian Wu
    • Masayuki K. Sakata
    • Toshifumi Minamoto

    Asia/Oceania report 14 July 2021 Pages: 363 - 370