Abstract
The removal plan of the belt conveyer pier is under way in Niigata Prefecture Joetsu City. It is concerned that the KATANORI (Grateloupia divaricata) vegetation surrounding the pier site might be influenced by this plan. G. divaricatais important algae for local fishermen. However, information of the growth conditions ofG. divaricataand influence by construction were little. Therefore, each stakes holder cooperated to reproduce theG. divaricatacolony and the conference for the problem solving was held. In the conference, the field investigation, the examination construction and the execution scheme were executed. As a result, the KATANORI beds was succeeded.
