摘要
为了解汕头东部近岸海域大型底栖动物群落及其与环境因子的关系,笔者于2020年7月、11月和2021年4月、12月对汕头东部近岸海域开展4个航次的调查,分析其大型底栖动物群落结构、季节变化及其与环境因子的关联。结果显示,4个航次的调查共采集到大型底栖动物44种,其中,环节动物14种、节肢动物10种、软体动物9种、其他类11种。优势种类以内卷齿蚕(Aglaophamus sp.)、光滑倍棘蛇尾(Amphioplus laevis)为主。大型底栖动物年平均栖息密度和平均生物量分别为410.4 ind./m^(2)和133.47 g/m^(2),总栖息密度为夏季>秋季>春季>冬季,总生物量变化为秋季>夏季>春季>冬季。Shannon多样性指数为0.68~0.99, Margalef丰富度指数为0.35~0.64, Pielou均匀度指数为0.89~0.98。聚类分析表明,调查到的大型底栖动物可分为5个群落。丰度/生物量曲线分析显示,夏季时群落因受扰动表现为不稳定状态,而春、秋、冬季则较为稳定。典范对应分析显示,不同季节影响大型底栖动物群落的环境因子不同,盐度、水温和含氮营养盐是影响大型底栖动物群落结构的主要环境因子。
To evaluate the relationship between macrozoobenthic communities and environmental factors in the eastern coastal waters of Shantou,four voyage investigations were conducted in this study in July,November of 2020 and April,December of 2021.Community structure(species composition,density,biomass,diversity indices and community classification),seasonal variation of macrozoobenthos and its relationship with environmental factors were analysed.A total of 44 species were collected,which mainly composed of 14 species of annelins,10 species of arthropods,9 species of molluscs,and 11 species of others.Aglaophamus sp.and Amphioplus laevis were the dominant species.The average abundance of macrozoobenthos were 410.4 ind./m^(2) and the biomass were 133.47 g/m^(2).The total density of macrozoobenthos was the greatest in summer,followed by autumn,spring,and winter.Total biomass was the greatest in autumn followed by summer,spring and winter.Shannon index of four seasons were 0.68~0.99,Margalef richness index were 0.35~0.64,and Pielou evenness index were 0.89~0.98.Cluster analysis showed that five communities of macrozoobenthos can be identified in the studied area.The abundance/biomass curves showed that macrozoobenthic communities were disturbed in summer,but stable in spring,autumn and winter.Canonical correspondence analysis(CCA)showed that,the main environmental factor affecting macrozoobenthic community was salinity,temperature,ammonium(NH4-N),nitrate(NO3-N)and nitrite(NO2-N).
作者
赵晨辉
王永生
贾胜华
刘国强
ZHAO Chenhui;WANG Yongsheng;JIA Shenghua;LIU Guoqiang(Shantou Marine Center,MNR,Shanwei 516600,China;Marine Academy of Zhejiang Province,Hangzhou 310000,China;Key Laboratory of Ocean Space Resource Management Technology,MNR,Hangzhou 310000,China)
出处
《海洋环境科学》
CAS
CSCD
北大核心
2023年第6期853-863,共11页
Marine Environmental Science
基金
国家自然科学基金青年基金(21307019)。
