The ecology of the macrobenthic community in the intertidal zone of Xindao, Jiaozhou Bay

Three sampling sites within intertidal zones of Xindao,Jiaozhou Bay,Shandong Peninsula,were set up to explore the community of macrobenthos during August 2003 to May 2004.Fourty-three species were found in the intertidal zones,of which 27 distributed in low tidal zone(X3),20 in medium tidal zone(X2) and 19 in high tidal zone(X1),and only 6 species are common in the three tidal zones.The total average density of benthos is 102.5 ind./m2,the highest in May,144.67 ind./m2,the lowest in February,52.66 ind./m2;while the total average biomass is 60.01g/m2,the highest in November,102.99 g/m2,the lowest in February,11.87 g/m2.Meanwhile,the density and biomass are evidently different within four seasons.