Annual Variations in Community Structure of Polychaetes in the Coastal Tidal Flats of the Radial Sand Ridges in Southern Yellow Sea
ZHANG Mingming1, ZHAO Dongyang1, YUAN Jianmei2, ZHANG Jialin1, QIAO Guo1, MA Ni1, BEN Chengkai2, ZHANG Hu2
1. College of Marine and Bioengineering, Yancheng Institute of Technology, Yancheng 224051, China; 2. Marine Laboratory of Marine Ecology and Environmental Sciences, Fisheries Research Institute of Jiangsu Province, Nantong 226007, China
Abstract：In order to systematically reveal the interannual dynamics of polychaete communities in the coastal tidal flats of the radial sand ridges in the southern Yellow Sea, a long-term monitoring survey was conducted across 10 transects at core area (N 31°00'—35°00', E 120°00'—122°00')in this region from 2013 to 2023. Species identification and enumeration were performed using morphological taxonomy, and the spatiotemporal dynamics of community structure and key environmental driving factors were analyzed. Results showed that a total of 42 polychaete species were identified across all surveys, belonging to 5 orders and 19 families. It was found that species richness was generally declined in a fluctuating manner, with gradual increase in abundance and biomass during the survey period. The overall diversity index was shown to be remained relatively stable with minor interannual variations, suggesting macroscale stability in the community structure. Three distinct community groups were further distinguished by cluster analysis and non-metric multidimensional scaling (NMDS): the first group represented by year 2013, the second group encompassing years 2015, 2017, 2019, and 2021, and the third group consisting solely of 2023. Redundancy analysis (RDA) results demonstrated that the key environmental factors driving the interannual variations in polychaete community structure were of chemical oxygen demand (COD) and total nitrogen (TN) in this region. In conclusion, the overall relatively stable structure of polychaete communities in this area over the past decade is increasingly threatened by environmental pressures. The finding provides data support and theoretical basis for the scientifically assessing polychaete resources and developing effective conservation strategies.
[1] 纪莹璐,拓宁,刘志强,等.我国沿海多毛类研究的现状[J].水产科学,2012,31(5):306-310. [2] 蔡立哲,林鹏,佘书生.深圳河口泥滩多毛类动物的生态研究[J].海洋环境科学,1998,17(1):41-47. [3] 蔡立哲,王智,杨德援,等.中国海域多毛类环节动物物种多样性研究进展[J].生物多样性,2023,31(10):160-172. [4] 蔡富才,李艳楠,赵欢,等.多毛类动物对多环芳烃的毒性响应及代谢研究进展[J].大连海洋大学学报,2017,32(1):119-126. [5] 傅素晶,饶义勇,林和山,等.九龙江口潮下带春季小型底栖动物分布及优势类群海洋线虫的群落结构分析[J].厦门大学学报(自然科学版),2023,62(1):127-136. [6] YANG G, LI C H, ZHONG Y, et al. Impact of tropical cyclones on the hydrodynamics and sediment dynamics of the radial sand ridge system in the southern Yellow Sea[J].Ocean Modelling,2024,188:102328. [7] QU K C, CHEN K F, WANG N R, et al. Geomorphological processes following the construction of an offshore artificial island in the radial sand ridges of the South Yellow Sea[J].Coastal Engineering,2024,192:104545. [8] 杜家笔,汪亚平.南黄海辐射沙脊群地貌演变的模拟研究[J].南京大学学报(自然科学版),2014,50(5):636-645. [9] 张鹰,张芸,张东,等.南黄海辐射沙脊群海域的水深遥感[J].海洋学报,2009,31(3):39-45. [10] 徐建,孙运坤,来向华,等.南黄海辐射沙脊群太平沙东侧晚更新世以来的沉积环境演化[J].地质学刊,2025,49(3):235-243. [11] 黎慧,万夕和,贲成恺,等.南黄海辐射沙脊群海域浮游植物群落结构特征及主要环境影响因子[J].江苏农业科学,2020,48(1):231-235. [12] 陈可锋,曾成杰,王乃瑞,等.南黄海大型潮汐水道动力地貌环境对人类活动响应——以小庙洪水道为例[J].水科学进展,2020,31(4):514-523. [13] 尹连政,秦永强,苏园园,等.退塘还林红树林大型底栖动物群落结构变化及影响因素[J].热带生物学报,2024,15(6):780-790. [14] 彭松耀.黄东海大型底栖动物群落结构特征[D].青岛:中国科学院研究生院(海洋研究所),2013. [15] 贾海波,曹柳燕,柴小平.2016—2019年夏季长江口海域大型底栖动物群落结构的变化及其原因分析[J].海洋环境科学,2022,41(2):180-186. [16] 姚楠. 三沙湾多毛类动物群落结构特征及其环境指示作用研究[D].上海:上海海洋大学,2023. [17] 王跃云,严润玄,王春生.西太平洋深海底栖多毛类动物地理分布特征[J].海洋学研究,2023,41(2):104-113. [18] 邵聪聪,李少月,王智,等.黄海春季多毛类分布与环境因子关系的初步研究[J].海洋湖沼通报(中英文),2025,47(4):78-84. [19] 王丑明,谢志才,宋立荣,等.滇池大型无脊椎动物的群落演变与成因分析[J].Zoological Research,2011,32(2):212-221. [20] JIANG S Y, WANG J, FAN W Z, et al. Decadal variation and temporal stability of the macrobenthic community in the Bohai Sea, China[J].Marine Pollution Bulletin,2024,207:116904. [21] 彭松耀,李新正,王洪法,等.南黄海春季大型底栖动物优势种生态位[J].生态学报,2015,35(6):1917-1928. [22] HUANG A X, ZHOU W W, HAN W H, et al. Nutrient thresholds drive nonlinear shifts in estuarine macrobenthic functional traits: implications for eutrophication monitoring and ecological resilience[J].Journal of Environmental Management,2025,394:127519. [23] WANG Q, CAO Z F, LIU Q, et al. Enhancement of COD removal in constructed wetlands treating saline wastewater: intertidal wetland sediment as a novel inoculation[J].Journal of Environmental Management,2019,249:109398. [24] CHEN N, WANG L Q, ZHAO Z, et al. Impacts of aquaculture on nitrogen cycling and microbial community dynamics in coastal tidal flats[J].Environmental Research,2025,270:120973. [25] 蒋友,朱奇锋,陈婷,等.藻类代谢对水体pH值及溶解氧影响的分析[J].浙江水利科技,2025,53(4):41-47.
2026, Vol. 45 
