2004 Volume 48 Pages 1231-1236
Field observations were carried out to investigate the effects of suspended sediment from the Ishikari River and bottom material originating from the Ishikari River on water quality in the coastal area of Ishikari Bay during the snowmelt season in 2003. In particular, in terms of suspended sediment and bottom material, the forms of phosphorous were analyzed to determine the release of phosphorous into the seawater. Results showed that during the snowmelt season, adsorbed phosphate from the suspended sediment was released into the seawater near the surface and that the phosphate was not released into the seawater from the bed material according to the vertical distribution of dissolved phosphate in the pore water of the seabed.
