1. Sexual reproduction under fluctuating water levels in an amphibious plant Schoenoplectus lineolatus (Cyperaceae): a waiting strategy?

   • Jun Ishii
   • Yasuro Kadono

   RESEARCH PAPER Pages: 1 - 6

2. The budget of dissolved trace metals in Lake Biwa, Japan

   • Saeko Mito
   • Yoshiki Sohrin
   • Munetsugu Kawashima

   RESEARCH PAPER Pages: 7 - 16

3. Migration from plant to plant: an important factor controlling densities of the epiphytic cladoceran Alona (Chydoridae, Anomopoda) on lake vegetation

   • Masataka Sakuma
   • Takayuki Hanazato
   • Ryoji Nakazato

   RESEARCH PAPER Pages: 17 - 23

4. Submarine groundwater discharge in Osaka Bay, Japan

   • Makoto Taniguchi
   • Hiroteru Iwakawa

   RESEARCH PAPER Pages: 25 - 32

5. Seasonal variation of denitrification rate in Lake Suwa sediment

   • Toru Hasegawa
   • Tokio Okino

   RESEARCH PAPER Pages: 33 - 39

6. An improved method for collecting heterotrophic microorganisms living on pebbles in streams

   • Miwa Fukuda
   • Atsuko Ashida
   • Shin-ichi Nakano

   NOTE Pages: 41 - 46

7. Progress of eutrophication and change of chironomid fauna in Lake Yamanakako, Japan

   • Kimio Hirabayashi
   • Kazuya Yoshizawa
   • Futaba Kazama

   NOTE Pages: 47 - 53

8. Abstracts from the Japanese Journal of Limnology

   • Yuuji Onda
   • Shinji Ohsawa
   • Tohru Yabe

   Abstracts from the Japanese Journal of Limnology Pages: 57 - 60