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- W2364162004 abstract "Two cruises were carried out for ecological survey on zooplankton in Beibu Bay (South Chian sea) from November 2001 to Januaray 2002. Thirteen species of Chaetognatha were identified, and the species composition in the collected specimens was simple. No obvious seasonal variation was observed. During the survey, the density of Chaetognatha ranged from 0. 76 to 45.7 ind/m3 with the average of 12. 03 ind/m3 in autumn and 6. 29 ind/m3 in winter, and the biomass ranged from 2.00 to 70.04 mg/m3 with the average of 23. 19 mg/m3 in autumn and 19.61 mg/m3 in winter, while the diversity index ranged from 0.18 to 1. 99 with the average of 0. 81 in autumn and 0.90 in winter. The Chaetognatha were mainly dominated by Sagitta enflata (in both seasons) , S. neglecta (in autumn) and S. bedoti (in winter) ,which accounted for 10.4% , 3. 1% and 1.8% of the total density, respectively. From north to south and west to east, the distributions of Chaetognatha density and biomass showed decreasing tendency , but varied slightly in different seasons. The diversity index was high in the mouth and low in the top of the bay, and showed an decreasing trend from the bay mouth to the northwest inside the bay. The relationships between the species composition and quantity distribution of Chaetognatha and the environmental factors, such as aquatic system, water mass, water temperature and salinity, etc, are also discussed." @default.
- W2364162004 created "2016-06-24" @default.
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- W2364162004 date "2003-01-01" @default.
- W2364162004 modified "2023-09-25" @default.
- W2364162004 title "Species composition and quantity distribution of Chaetognatha in Beibu Bay in autumn and winter" @default.
- W2364162004 hasPublicationYear "2003" @default.
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