Temporal and spatial variations of benthic diatom communities at three estuaries in the Bohai Sea

Wang Shanshan; Liu Dongyan; Wang Yujue; Yuan Zineng

doi:10.3969/j.issn.0253-4193.2020.08.009

Volume 42 Issue 8

Nov. 2020

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Wang Shanshan，Liu Dongyan，Wang Yujue, et al. Temporal and spatial variations of benthic diatom communities at three estuaries in the Bohai Sea[J]. Haiyang Xuebao，2020, 42(8)：101–114 doi: 10.3969/j.issn.0253-4193.2020.08.009

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Temporal and spatial variations of benthic diatom communities at three estuaries in the Bohai Sea

doi: 10.3969/j.issn.0253-4193.2020.08.009

Wang Shanshan^{1, 2
,},
Liu Dongyan^{3, 4
,
,},
Wang Yujue³,
Yuan Zineng⁵

1.
Key Laboratory of Coastal Environmental Processes and Ecological Remediation of Chinese Academy ofSciences, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China
3.
State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, China
4.
Institude of Eco-Chongming, East China Normal University, Shanghai 200241, China
5.
Center for Deep Sea Interdisciplinary Research, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266200

Received Date: 2019-08-10
Rev Recd Date: 2019-10-28

Available Online: 2020-11-18

Publish Date: 2020-08-25

Abstract

Abstract

Benthic diatoms are important primary producers in estuarine mudflat system, and the spatial and temporal changes in the communities can significantly impact the productivity of benthic fauna in the estuary. In this study, the ecological parameters in the estuaries of Daliao River, Hangu River and Huanghe River along the Bohai Sea coastline were surveyed and the related environmental factors were discussed, aiming to understand the seasonal variations and spatial differences of benthic diatom communities. The results showed that the species diversity index and absolute abundance of benthic diatoms were the highest in autumn, and the dominant species displayed obviously seasonal succession. The diatom absolute abundance in the estuaries of Daliao River and Hangu River were significantly higher than that of Huanghe River Estuary. The coarser sediments and significant phosphorus limitation in the Huanghe River Estuary are main reasons for the low diatom abundance. The correlation analysis between the benthic diatom communities and environmental factors indicated that the changes of temperature and nutrient concentration have significant effects on the seasonal pattern of the benthic diatom communities, while the sediment size, tidal range and runoff of the three estuaries are more important to explain spatial differences.
- estuary,
- mudflat,
- benthic diatom,
- sediment,
- nitrogen pollution

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References(39)

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