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Transparent exopolymer particles (TEP) play an important role in the marine micro-food web and the marine carbon cycle. The distribution patterns and influencing factors of TEP in the coast of eastern Fujian in summer are investigated in this research. The results show that the contents of TEP (calculated with xanthan gum as the standard substance, the same below) in the coast of eastern Fujian ranged from 25.2 μg/L to 935.5 μg/L, with an average value of (201.8±177.9) μg/L. The level of TEP is high in the near-shore and low in the far-shore, which in surface layer is lower than that in bottom layer. Correlation analysis shows that TEP in the research area are positively correlated with turbidity, silicate, phosphate, nitrite, nitrate and ammonium concentration, negatively correlated with pH, DO concentration and Net-level phytoplankton. The results of chlorophyll a fractions show that Net-level phytoplankton in the area may contribute more to TEP than other size phytoplankton. Comparing with phytoplankton as the main controlling factor of TEP in the open ocean, TEP in the coast of eastern Fujian in summer are mainly produced by phytoplankton in the decline stage, and its distribution is mainly affected by the resuspension of particles. The results can not only further clarify the differences between the influencing factors of TEP in the coastal waters and the open ocean, but also supplement the gaps in the study of TEP distribution in different regions of coastal waters in China.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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