On the phytosociology and ecology of Isoëtes asiatica (Makino) Makino in oligotrophic water bodies of South Sakhalin W. Pietsch OriginalPaper Pages: 99 - 115
The ecology of the seed in Trapa natans var. Japonica in a eutrophic lake M. KuriharaI. Ikusima OriginalPaper Pages: 117 - 124
A study on annual changes in surface cover of floating-leaved plants in a lake using aerial photography S. Nohara OriginalPaper Pages: 125 - 136
Aquatic macrophyte composition in relation to environmental factors of irrigation ponds around Lake Shinji, Shimane, Japan H. Kunii OriginalPaper Pages: 137 - 148
Human impact on the ecological performance of Potamogeton species in northwestern Germany G. WieglebH. BruxW. Herr OriginalPaper Pages: 161 - 172
Effects of Cu, Pb and Zn on two Potamogeton species grown under field conditions M. GregerL. Kautsky OriginalPaper Pages: 173 - 184