Macrozoobenthos distribution after flood events offshore the Mimi River estuary, Japan

To assess the distribution of macrozoobenthos and environmental conditions after river flooding events offshore Mimi River, water quality, benthic communities were investigated at five stations over a 6-year period. At station closest to mouth, sediment median grain size was coarser than that other stations. Also, community this particular dominated by crustaceans differed from observed Because these changes in related floods caused typhoon rains, it is suggested outflow relatively coarse sand affected changing conditions. The three detected fine polychaete-dominated communities, they found no evidence flood effects on both their environment macrozoobenthos. remaining station, somewhat changed as result events, composition those These may have depended transport capacity coastal currents for sediments each event. Our results show supply derived could significantly modify conditions, resulting increased macrobenthic biodiversity mouth.