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引用本文:杨纯懿,张龙辉,杜永芬,吴亚平,张安国,袁秀堂.双台子河口砂质潮间带小型底栖动物的群落结构及其对环境的响应.海洋与湖沼,2020,51(3):572-582.
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双台子河口砂质潮间带小型底栖动物的群落结构及其对环境的响应
杨纯懿1, 张龙辉2, 杜永芬3, 吴亚平1, 张安国4, 袁秀堂4
1.河海大学海洋学院 南京 210098;2.南京大学地理与海洋科学学院 南京 210023;3.南京师范大学海洋科学与工程学院 南京 210023;4.国家海洋环境监测中心 大连 116023
摘要:
潮间带是典型的陆海交互区,其生物群落及其环境具有典型性特征。海洋小型底栖动物具有极高的群落多样性和环境适应性,但是其时空分布特征以及与环境因子的关系研究具有区域局限性。2017年春季(5月)、夏季(8月)和秋季(10月)于我国纬度最高的双台子河口潮间带,布设7个断面,21个站位,进行了小型底栖动物和沉积环境的定量采样与分析。共检获7个小型底栖动物主要类群,总平均丰度和生物量分别为(3530±1474)ind./10cm2和(1836.5±976.3)μg dwt/10cm2,其中海洋线虫为最优势类群,平均丰度和生物量分别占96.6%和72.1%,其次是双壳类和桡足类。丰度/生物量的季节波动小,自陆向海略呈降低趋势(高位≥中位>低位),统计分析表明其与中值粒径和和叶绿素a含量显著相关。小型底栖动物群落受季节和潮位影响显著,Bio-env分析显示相关性最高的环境因子组合为沉积物中值粒径、叶绿素和脱镁叶绿酸含量。海洋线虫与桡足的比值(N/C)评估显示该区域存在有机污染,且研究区西部最严重,与同区有机污染物的环境评价结果较为一致,说明其在生物监测中具有重要意义。
关键词:  双台子河口  砂质潮间带  小型底栖动物  群落结构
DOI:10.11693/hyhz20191000202
分类号:
基金项目:国家自然科学基金项目,41576154号;海洋公益性行业科研专项经费项目,201305043号。
MEIOFAUNAL COMMUNITY IN SANDY INTERTIDAL ZONE AND ITS ENVIRONMENTAL RESPONSE IN SHUANGTAIZI ESTUARY, NE CHINA
YANG Chun-Yi1, ZHANG Long-Hui2, DU Yong-Fen3, WU Ya-Ping1, ZHANG An-Guo4, YUAN Xiu-Tang4
1.College of Oceanography, Hohai University, Nanjing 210098, China;2.School of Geography and Ocean Science, Nanjing University, Nanjing 210023, China;3.College of Marine Science and Engineering, Nanjing Normal University, Nanjing 210023, China;4.National Marine Environmental Monitoring Center, Dalian 116023, China
Abstract:
Intertidal area is a typical land-sea interaction zone, where the characteristics in biological composition and their micro-environments are of regional representative. Among them, meiofauna has extremely high community diversity and environmental adaptability, while the data of their spatial-temporal distribution patterns and the related regulators are of regional limit. Cores sediments were quantitatively taken in the northernmost-intertidal zone of the Shuangtaizi estuary in the Bohai Sea, NE China in May (spring), August (summer), and October (autumn) in 2017. Twenty-one stations were designed in seven sections, along which the meiofauna and sedimentary environments were analyzed. Seven meiofaunal taxa were found. Free-living marine nematodes were the most dominant group, accounting for 96.6% and 72.1% of the total in abundance and biomass composition, respectively, followed by bivalves and copepods. The average abundance and biomass of meiofauna were (3530±1474)ind./10cm2 and (1836.5±976.3)μg dwt/10cm2, respectively, with no seasonal variation and downward trends from land to sea. The medium grain size and chl a were correlated significantly to the abundance/biomass. The ratio of nematodes/copepod (N/C) indicated serious organic pollution, which agreed with the results of the macrofaunal analysis and heavy metal samplings in the similar areas, and could be used as a bio-monitoring indicator.
Key words:  Shuangtaizi estuary  sandy intertidal zone  meiofauna  community structure
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