渤海湾潮下带底栖线虫群落的垂直分布  

Study on the Vertical Distribution of Benthic Nematode Community in Sublittoral Zone of Bohai Bay,China

作　　者：张青田[1,2] 王新华[2] 胡桂坤[1] 

机构地区：[1]天津科技大学海洋资源与化学重点实验室,天津300457 [2]南开大学生命科学学院,天津300071

出　　处：《海洋科学进展》2012年第3期416-422,共7页Advances in Marine Science

基　　金：中国近海海洋综合调查与评价专项--天津市专项海洋生物生态调查(908-TJ-10);国家科技支撑计划重点项目--典型人工海岸污染控制与生态构建技术研究及示范(2010BAC68B04);天津科技大学科学研究基金--小型底栖动物生物量估算模型研究(20100220)

摘　　要：2007年春季在渤海湾天津潮下带采集小型底栖生物样品,分析沉积物中自由生活线虫的垂直分布情况。多元统计分析结果表明,底栖线虫的垂直分布和沉积物深度有关。在较深的5～10cm层,线虫群落与其上层次的差异较大:0～2cm层和5～10cm层差异极显著(P=0.001),2～5cm层和5～10cm层间差异显著(P=0.016)。不同站点间底层的线虫群落差异明显。而沉积物0～2cm层和2～5cm间的线虫群落差异不明显(P=0.541)。列出了SIMPER分析中16种明显影响表层-底层群落的线虫,13种明显影响中层-底层间群落比较的线虫。在研究和比较线虫群落时,应该考虑取样深度的影响。The meiofaunal core samples were collected in April 2007 and the nematodes were identified in the laboratory. The multivariate statistical results indicated that the distribution of benthic nematode com- munity had vertical variation. The nematode community in 5-10 cm layer was different from that of the upper two layers and the differences were significant. The significance of community difference between 0 -2 cm layer and 5~10 cm layer was P=0. 001; and that between 2-5 cm layer and 5-10 cm layer was P=0. 016. Furthermore, the nematode species composition of 5-10 cm layer among these survey stations varied obviously. On the other hand, the community difference between 0-2 cm layer and 2-5 cm layer was not significant （P=0. 541）. Some nematode species obviously affecting the community composition were also listed by the SIMPER analysis. There were 16 species between 0-2 cm and 5-10 cm layer and 13 species between 2-5 cm and 5-10 cm layer affecting the communities composition evidently. Conse- quently, the sampling depth should be taken into consideration in further study and comparison of nema- tode community.

关 键 词：底栖线虫 自由生活线虫 群落 垂直分布 渤海湾 

分 类 号：Q178.53[生物学—水生生物学]