Phenological description of major plants of the twelve data collection days.

Quantitative values in parentheses are plant height of corresponding plants estimated by vision. The difference between vegetative growth1 and vegetative growth2 is that stems elongate quickly in the former while little stem development and mainly development of harvestable vegetative part occurs in the latter. On January 14 and March 16, a large part of Scirpus covers fell down due to tidal water and, thus, their canopy height was lower than the height given in this table.