《厦门大学学报（自然科学版）》

为揭示深圳湾福田红树林区小型底栖动物群落的时空变化,在深圳湾福田红树林区3个取样站进行了夏、秋、冬3个季节的定量取样,共发现7个小型底栖动物类群,分别为自由生活海洋线虫、多毛类、寡毛类、双壳类、腹足类、桡足类和昆虫类,还有少许未定类群归为其他类.分析结果显示自由生活海洋线虫是优势类群,它与桡足类的丰度比值高,小型底栖动物的平均丰度为(1 572±389)ind/(10 cm2),平均生物量为(814±236)μg/(10 cm2).单变量双因素方差分析结果表明:不同取样站和季节的小型底栖动物群落的类群数和丰度无显著差异; 小型底栖动物群落的生物量、类群多样性指数、均匀度指数和丰富度指数呈显著的季节变化,但取样站之间无显著差异.综上,深圳湾福田红树林区小型底栖动物优势类群呈现较高的丰度和较低的类群多样性.

To probe the spatial and temporal variations of benthic meiofaunal communities in Futian mangrove area of the Shenzhen Bay,benthic meiofauna was investigated in three sampling stations in three seasons.The results showed that seven meiofaunal groups were found,which were free-living marine Nematoda,Polychaeta,Oligochaeta,Bivalvia,Gastropoda,benthic Copepoda and Insecta,as well as some unidentified groups classified as others.Among them,Nematoda was the dominant group and the nematode/copepod abundance ratio was high.The average abundance and biomass of meiofauna were(1 572±389)ind/(10 cm2)and(814±236)μg/(10 cm2),respectively.Univariate two-way ANOVA results showed that there was no significant difference in group numbers and meiofunal abundance among seasons and sampling stations.Besides,the meiofaunal biomass,group diversity index,evenness index and richness index were significantly different among seasons,while no significant difference was shown among sampling stations.These results indicate that the dominant meiofaunal group has higher density and lower value of group Shannon-Wiener index in Futian mangrove area of the Shenzhen Bay.

引言
1 材料与方法
2 结果与分析
3 讨论

图1 深圳湾福田红树林区小型底栖动物取样站示意图<br/>Fig.1 Meiofaunal sampling stations in Futian mangrove area of the Shenzhen Bay

图1 深圳湾福田红树林区小型底栖动物取样站示意图
Fig.1 Meiofaunal sampling stations in Futian mangrove area of the Shenzhen Bay

表1 小型底栖动物各类群的个体平均干质量<br/>Tab.1 Individual average dry weight of each meiofaunal group

表1 小型底栖动物各类群的个体平均干质量
Tab.1 Individual average dry weight of each meiofaunal group

图2 深圳湾福田红树林区不同取样站不同季节小型底栖动物的类群数<br/>Fig.2 Group numbers of meiofauna in different sampling stations and seasons in Futian mangrove area of the Shenzhen Bay

图2 深圳湾福田红树林区不同取样站不同季节小型底栖动物的类群数
Fig.2 Group numbers of meiofauna in different sampling stations and seasons in Futian mangrove area of the Shenzhen Bay

表2 深圳湾福田红树林区小型底栖动物群落参数的单变量双因素方差分析<br/>Tab.2 Univariate two-way ANOVA for community parameters of meiofauna between seasons and sampling stations in Futian mangrove area of the Shenzhen Bay

表2 深圳湾福田红树林区小型底栖动物群落参数的单变量双因素方差分析
Tab.2 Univariate two-way ANOVA for community parameters of meiofauna between seasons and sampling stations in Futian mangrove area of the Shenzhen Bay

图3 深圳湾福田红树林区不同取样站不同季节小型底栖动物的丰度<br/>Fig.3 Meiofaunal abundances in different sampling stations and seasons in Futian mangrove area of the Shenzhen Bay

图3 深圳湾福田红树林区不同取样站不同季节小型底栖动物的丰度
Fig.3 Meiofaunal abundances in different sampling stations and seasons in Futian mangrove area of the Shenzhen Bay

图4 深圳湾福田红树林区不同取样站不同季节小型底栖动物的丰度百分比<br/>Fig.4 Percentages of group abundances of meiofauna in different sampling stations and seasons in Futian mangrove area of the Shenzhen Bay

图4 深圳湾福田红树林区不同取样站不同季节小型底栖动物的丰度百分比
Fig.4 Percentages of group abundances of meiofauna in different sampling stations and seasons in Futian mangrove area of the Shenzhen Bay

图5 深圳湾福田红树林区不同取样站不同季节小型底栖动物的生物量<br/>Fig.5 Meiofaunal biomass in different sampling stations and seasons in Futian mangrove area of the Shenzhen Bay

图5 深圳湾福田红树林区不同取样站不同季节小型底栖动物的生物量
Fig.5 Meiofaunal biomass in different sampling stations and seasons in Futian mangrove area of the Shenzhen Bay

图6 深圳湾福田红树林区不同取样站不同季节小型底栖动物的生物量百分比<br/>Fig.6 Percentage of group biomass of meiofauna in different sampling stations and seasons in Futian mangrove area of the Shenzhen Bay

图6 深圳湾福田红树林区不同取样站不同季节小型底栖动物的生物量百分比
Fig.6 Percentage of group biomass of meiofauna in different sampling stations and seasons in Futian mangrove area of the Shenzhen Bay

图7 深圳湾福田红树林区不同取样站不同季节的类群多样性指数(a)、均匀度指数(b)和丰富度指数(c)<br/>Fig.7 Group diversity index(a),evenness index(b)and richness index(c)in different sampling stations and seasons in Futian mangrove area of the Shenzhen Bay

图7 深圳湾福田红树林区不同取样站不同季节的类群多样性指数(a)、均匀度指数(b)和丰富度指数(c)
Fig.7 Group diversity index(a),evenness index(b)and richness index(c)in different sampling stations and seasons in Futian mangrove area of the Shenzhen Bay

表3 深圳湾福田红树林区不同取样站不同季节的RN/C<br/>Tab.3 RN/C in different sampling stations and seasons in Futian mangrove area of the Shenzhen Bay

表3 深圳湾福田红树林区不同取样站不同季节的RN/C
Tab.3 RN/C in different sampling stations and seasons in Futian mangrove area of the Shenzhen Bay

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备注

引言

1 材料与方法

2 结果与分析

3 讨论

学报简介

备注

引言

1 材料与方法

2 结果与分析

3 讨 论

学报简介

3 讨论