Abstract
It is well known that a seagrass (Zostera japonica) has a function to let the benthic fauna of intertidalzone increase. To conserve and construct seagrass bed, it is important to clarify the relationship between growth conditions and environmental factors. However, it is difficult to understand the factors that affectthe growth of Z japonica from the results of a field survey. Therefore, a laboratory experiment wascarried out to study the effect of environmental conditions such as emergence time and bottom sedimentconditions on the growth of Z japonica. The growth of Z japonica was found to be good in thesubmergence condition, but it was not affected by the various sediment conditions. Thus, it was indicatedthat compared to sediment, emergence time is one of the most important environmental factors on thegrowth of Z japonica.
