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seasonal distribution of macrobenthos and its relationship with environmental factors in yellow sea and east china sea

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Journal of Oceanology and Limnology 2018年第3期36卷 772-782页

作者： SHOU Lu LIAO Yibo TANG Yanbin CHEN Jianfang JIANG Zhibing GAO Aigen CHEN Quanzhen Key Laboratory of Marine Ecosystem and Biogeochemistry Second Institute of OceanographyState Oceanic Administration Hangzhou 310012China Key Laboratory of Applied Marine Biotechnology Ministry of EducationMarine College of Ningbo UniversityNingbo 315211 China

Macrobenthos samples were collected from the yellow and east china seas in four seasons during 2011 to 2012. The seasonal distribution of macrobenthos and its relationship with environmental factors were analyzed. A total of 562 macrobenthic species were identified, with polychaetes and mollusks accounting for 67% of the total number of species. A similarity percentage(SIMPER) analysis showed that the dominant species were bivalve mollusks in the yellow sea and small-sized polychaetes in the east china sea. A two-factor analysis of variance showed significant seasonal variations in species number, density and diversity index, and significant regional differences of biomass and density. Two-factor community similarity analysis also showed significant seasonal and regional differences in macrobenthic communities. Canonical correspondence analysis indicated that the main environmental factors af fecting the macrobenthic communities were water depth, temperature, dissolved oxygen, and inorganic nitrogen. The results demonstrate significant regional differences and seasonal variations in macrobenthos in the two seas. Sediment properties and water mass characteristics are speculated to be the causes of regional differences.

关键词： yellow sea east china sea macrobenthos environmental correlation analysis

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