| Li Shaowen,Li Fan,Song Xiukai,Zhang Mingliang. 2020. The influence of water-sediment regulation on macrobenthic community structures in the Huanghe River (Yellow River) Estuary during 2012–2016. Acta Oceanologica Sinica, 39(10):120－128 |
| The influence of water-sediment regulation on macrobenthic community structures in the Huanghe River (Yellow River) Estuary during 2012–2016 |
| 2012-2016年调水调沙对黄河口海域大型底栖动物群落结构的影响 |
| Received:May 09, 2020 |
| DOI：10.1007/s13131-020-1664-3 |
| Key words:Huanghe River Estuary macrobenthos water-sediment regulation community structure |
| 中文关键词: 黄河口 大型底栖动物 调水调沙 群落结构 |
| 基金项目: |
| Author Name | Affiliation | E-mail | | Li Shaowen | Shandong Provincial Key Laboratory of Restoration for Marine Ecology, Shandong Marine Resource and Environment Research Institute, Yantai 264006, China | lishaowen@shandong.cn | | Li Fan | Shandong Provincial Key Laboratory of Restoration for Marine Ecology, Shandong Marine Resource and Environment Research Institute, Yantai 264006, China | | | Song Xiukai | Shandong Provincial Key Laboratory of Restoration for Marine Ecology, Shandong Marine Resource and Environment Research Institute, Yantai 264006, China | | | Zhang Mingliang | Shandong Provincial Key Laboratory of Restoration for Marine Ecology, Shandong Marine Resource and Environment Research Institute, Yantai 264006, China | |
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| Abstract: |
| To determine if water-sediment regulation has affected macrobenthic community structure in the Huanghe River Estuary, China, macrobenthic samples were collected following regulation events from 2012 to 2016. We identify seven phyla and 138 macrobenthic species from within samples throughout the survey area, over time. Species richness and abundance in 2012 were significantly higher than in 2016. Biomass did not differ significantly during 2012–2016. Dominant species were mostly small polychaetes, with mollusks, arthropods, and echinoderms all being relatively rare. In 2016, dominant species were small polychaetes. MDS reveals macrobenthic communities at all surveyed distances from the estuary to have become the same community structure over time. Shannon-Wiener diversity and Margalef richness indexes trended down over time. CCA reveals the most dominant sediment-dwelling species to prefer lower dissolved oxygen, sulfides, and pH, and sediments with high D50 and low clay content. We speculate that water-sediment regulation has affected seabed communities, particularly Region A in our survey area. |
| 中文摘要: |
| 为了明确黄河调水调沙对河口海域大型底栖动物群落结构的影响，本研究于2012至2016年调水调沙后进行了大型底栖动物样品的采集工作。整个研究时期共鉴定出大型底栖动物7门138种，生物量和丰度2012年显著高于2016年，生物量年间无显著差异；研究时期内优势种以小型多毛类为主，鲜见软体动物、节肢动物和棘皮动物，其中2016年优势种全部为小个体多毛类；MDS显示，随时间的推移距河口不同距离梯度的大型底栖动物逐渐演变为相同的群落结构，且Shannon-Wiener多样性指数和Margalef丰富度指数呈下降趋势；CCA显示研究海域主要底栖动物种类的生态需求为高中值粒径、低溶解氧、pH、黏土和硫化物含量。本研究推测调水调沙工程一定程度上影响了底层生物群落结构，特别是研究海域的A断面。 |
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