To explore the effects of Zostera japonica in supporting macrobenthic communities,the macro-benthic community of seagrass beds and unvegetated habitat in Pearl Bay,Guangxi was investigated for four seasons.The species diversity of macrobenthos was evaluated by Margalef richness index(d),Pielou even-ness index(J')and Shannon-Wiener diversity index(H').Hierarchical cluster and Non-metric sort Multidi-mensional Scaling(NMDS)were used to analyze the community structure of macrobenthos.The results showed that the number of macrobenthic species recorded in the seagrass bed(45 species)was higher than that in the unvegetated habitat(29 species)in the four seasons.The average abundance[(673.69±65.22)ind.·m-2],biomass[(574.13±44.06)g·m-2],secondary productivity[(51.37±4.03)g(AFDM)·m 2·a-1],Margalef's richness index(1.36±0.09),Pielou's evenness index(0.57±0.02)and Shannon-Wiener diversity index(1.28±0.07)of macrobenthos in the seagrass bed of the four seasons were higher than those in the unvegetated habitat.There were significant differences in biomass,secondary productivity,Margalef's richness index and Shannon-Wiener diversity index.The results show that the growth of Z.ja-ponic in Pearl Bay can promote the settlement of macrobenthos in the intertidal zone,and the protection of seagrass resources is also conducive to the protection of macrobenthos and the maintenance of biodiversity in the intertidal zone.
关键词
海草床/日本鳗草/大型底栖动物/群落结构/珍珠湾
Key words
seagrass bed/Zostera japonica/macrobenthos/community structure/Pearl Bay
维普
万方数据