The Research for Dynamics of Oxygen in the Eutrophicated Shallow Sea Area

Susumu YAMOCHI, Hiroyuki SHIMIZU, Takaaki SHIGEMATSU, Toshiya KOIKE
2007 PROCEEDINGS OF COASTAL ENGINEERING JSCE  
at the bottom of shallow area of the artificial tidal flat where ground levels were from D.L.-2.3 to D.L.-1.9m. Photosynthesis of phytoplankton and seaweed played an important role on the dynamics of oxygen at the artificial tidal flat. Release of oxygen by phytoplankton changed depending on photon flux density, while dominant seaweed, Ulva sp. showed active photosynthesis in spite of low photon flux density. Oxygen consumption by respiration of Ulva sp. promoted hypoxia at night at the ground
more » ... evel of ca.D.L.-1. Om of the artificial tidal flat.
doi:10.2208/proce1989.54.1261 fatcat:cakkqu6iazfn3jnd5hyh6bdube