厦门同安湾下潭尾人工红树林湿地小型底栖动物群落结构

(1.厦门大学环境与生态学院,福建 厦门 361102; 2.厦门大学嘉庚学院环境科学与工程学院, 福建 漳州 363105; 3.厦门大学海洋与地球学院,福建 厦门 361102)

小型底栖动物; 群落; 人工红树林湿地; 同安湾; 下潭尾

Meiofauna Communities in Artificial Mangrove Wetland in Xiatanwei of Tong'an Bay,Xiamen
CHEN Xinwei1,LI Xiang1,ZENG Jiali1,TAN Wenjuan1,

(1.College of the Environment & Ecology,Xiamen University,Xiamen,361102,China; 2.School of Environmental Science and Engineering,Xiamen University Tan Kah Kee College,Zhangzhou,363105,China; 3.College of Ocean and Earth Sciences,Xiamen University,Xiamen 361102,China)

DOI: 10.6043/j.issn.0438-0479.201605025

备注

为研究厦门同安湾下潭尾人工红树林湿地小型底栖动物的群落结构,于2014年在下潭尾人工红树林湿地5个取样站进行了4个季节小型底栖动物定量取样,共获取了9个小型底栖动物类群,分别为自由生活海洋线虫、底栖桡足类、寡毛类、多毛类、涡虫类、有孔虫类、介形类、双壳类、星虫类,还有少许未定类群.其中,自由生活海洋线虫是优势类群,占总丰度的91.75%.下潭尾人工红树林湿地小型底栖动物平均丰度为(441.3±61.0)ind/(10 cm2),平均生物量为(555.8±104.6)μg/(10 cm2).单变量双因素方差分析(two-way ANOVA)表明:不同季节之间小型底栖动物丰度和生物量有极显著差异; 不同取样站之间小型底栖动物丰度无显著差异,生物量有显著差异.小型底栖动物群落的类群均匀度指数(J')、多样性指数(H')和优势度指数(λ)的最高值均出现在光滩取样站.Pearson相关性分析表明:小型底栖动物的个体数与底温呈极显著负相关、与底盐呈显著负相关; 夏、秋两季小型底栖动物的类群数以及夏季小型底栖动物丰度均与底盐呈显著相关.上述结果完善了我国人工红树林湿地小型底栖动物物种和生境多样性资料库,为滨海湿地公园管理、滩涂生态修复和红树林湿地管理提供了基础资料.

In order to study the community structure of meiofauna in artificial mangrove wetland of Xiatanwei located in Tong'an Bay,the meiofauna was quantitatively investigated at five stations in the four seasons of 2014.Nine meiofaunal groups were observed,including free-living marine Nematoda,benthic Copepoda,Oligochaeta,Polychaeta,Turbellaria,Foraminifera,Ostracoda,Bivalvia and Sipuncula.Among them,free-living marine Nematoda was the dominant group,accounting for 91.75% of the total abundance.The average abundance and biomass of meiofauna were(441.3±61.0)ind/(10 cm2)and(555.8±104.6)μg/(10 cm2),respectively.Univariate two-way ANOVA showed that there were highly significant differences in meiofauna abundance and biomass among seasons,and significant differences in biomass but not in meiofauna abundance among stations.The highest values of evenness index(J'),Shannon-Wiener index(H')and dominance index(λ)all appeared in the mudflat station.Meanwhile,Pearson correlation analysis indicated that temperature and salinity were the factors influencing the group number of meiofauna,and salinity was a crucial element that affected the abundance of meiofauna in summer.This study provides new data bank of meiofauna in artificial mangrove areas in China and supplies basic data of coastal wetland park management,intertidal zone ecological restoration and coastal mangrove wetland management.