Functional groups of benthic macrofauna in the 14th Yong intertidal zone of Nansha,Guangzhou

大型底栖动物根据食性可分为浮游生物食者(planktophagous,Pl)、植食者(phytophagous,Ph)、肉食者(carnivorous,C)、杂食者(omnivorous,O)和碎屑食者(detritivorous,D)五个功能群。本文根据2007–2008年度和2013–2014年度在茳芏(Cyperus malaccensis)、海桑(Sonneratia caseolaris)2种生境调查获得的各4个季度的大型底栖动物数据,分析了广州南沙十四涌潮间带大型底栖动物功能群的生境差异、季节变化和年际变化。2007–2008年度采集到26种大型底栖动物,低于2013–2014年度的36种。无论是2007–2008年度还是2013–2014年度,茳芏、海桑生境的大型底栖动物均以植食者的栖息密度和生物量最高,碎屑食者的栖息密度和生物量最低。生境比较得出,茳芏生境大型底栖动物浮游生物食者(Pl)的丰富度指数(d)、均匀度指数(J)和多样性指数(H')均高于海桑生境。年度比较得出,在茳芏和海桑生境,2013–2014年度浮游生物食者的丰富度指数、均匀度指数和多样性指数均高于2007–2008年度,这是因为2013–2014年度采集到红树蚬(Gelonia coaxans)和彩虹明樱蛤(Morerlla iridescens)等,而2007–2008年度没有采集到。Benthic macrofauna were classified into 5 functional groups,i.e.planktophagous(Pl),phytophagous(Ph),carnivorous(C),omnivorous(O) and detritivorous(D).The biotope difference,seasonal and annual variations of functional group of benthic macrofauna in the intertidal zone of the 14 th Yong of Nansha,Guangzhou were analyzed in this study according to the four seasonal data of benthic macrofauna collected in two biotopes(Cyperus malaccensis and Sonneratia caseolaris) in 2007–2008 and 2013–2014.A total of 26 species were recorded in 2007–2008,which was lower than 36 species in 2013–2014.Both in 2007–2008 and 2013–2014,phytophagous group showed the highest value while detritivorous group shared the lowest one in density and biomass.Habitat comparison showed that the abundance index(d),evenness index(J) and diversity index(H') of planktophagous group in Cyperus malaccensis habitat were all higher than those in Sonneratia caseolaris habitat.Annual comparison showed that the abundance index,evenness index and diversity index of planktophagous group in 2013–2014 were all higher than those in 2007 –2008 both in Cyperus malaccensis and Sonneratia caseolaris habitats because the planktophagous such as Gelonia coaxans and Morerlla iridescens and so on were collected in 2013–2014 but they were not found in 2007–2008.国家自然科学基金(41176089和41376113

Current Status and Management Strategies of Zoobenthic Resources in Quanzhou Bay Mangrove Wetland

根据泉州湾红树林湿地底栖动物历史调查数据和文献,阐述了泉州湾红树林湿地底栖动物的资源和研究现状,分析了泉州湾红树林湿地底栖动物调查研究的不足,提出今后的研究思路和管理策略,旨在为泉州湾红树林湿地底栖动物资源保护和管理提供科学依据。According to the data of historical surveys and literature, current status of zoobenthic resources and studies of them were described.Shortages of zoobenthic surveys in Quanzhou Bay mangrove wetland were analyzed.Research needs and management strategies were proposed, providing a scientific basis for zoobenthic resource protection and management of Quanzhou Bay mangrove wetland

Polychaete community in mangrove and salt marsh in Zhangjiang River Estuary,Fujian Province of East China

为了比较漳江口4种植物生境之间多毛类动物群落的差异性,2010年对漳江口潮间带秋茄、桐花树、白骨壤和互花米草4种植物生境的多毛类动物进行4个季度的定量取样.共获得15种多毛类动物,4个季度在4种植物生境中均出现三角洲双须虫、溪沙蚕、拟突齿沙蚕、凿贝才女虫、小头虫和加州中蚓虫.多毛类动物栖息密度、生物量、丰度指数、均匀度指数和多样性指数的季节变化不明显;但4种植物生境之间多毛类动物栖息密度、生物量、丰度指数、均匀度指数和多样性指数有显著差异,且互花米草生境与3种红树林生境之间多毛类动物优势种不同.PEArSOn相关分析表明,漳江口红树林和盐沼湿地除了多毛类物种数与泥温显著相关外,多毛类动物栖息密度、生物量、丰度指数、均匀度指数和多样性指数均与泥温、盐度、总有机碳、总氮无显著相关关系,其原因是漳江口4种植物生境多毛类动物常见种小头虫、加州中蚓虫和溪沙蚕均是广温、广盐及耐高有机质含量的种类.In order to understand the community structure of polychaete in different botanic habitats in Zhangjiang River Estuary,an investigation was conducted in the habitats of Kandelia candel,Aegiceras corniculatum,Spartina alterniflora,and Avicennia marina in four seasons,2010.A total of 15 polychaete species were recorded,and 6 species including Eteone delta,Namalycastis abiuma,Paraleonnates uschakovi,Polydora ciliata,Capitella capitata,and Mediomastus californiensis were found in the four habitats and four seasons.The density,biomass,richness index,evenness index,and diversity index of the polychaete had no significant differences among seasons but significant differences among habitats,and the dominant species of polychaete in S.alterniflora habitat differed from that in the other three mangrove habitats.Pearson correlation analysis showed that in the mangrove and salt marsh,there were no significant correlations between the polychaete parameters(density,biomass,richness index,evenness index,and diversity index) and the environmental factors(sediment temperature,salinity,total organic carbon,and total nitrogen),except that the species number of polychaete had significant correlation with sediment temperature due to the common species of polychaete such as Capitella capitata,Mediomastus californiensis,and Namalycastis abiuma in the mangrove and salt marsh in Zhangjiang River Estuary being of eurytherm and eurysalinity,and resistant to high organic matter content.国家自然科学基金重点项目(30930017)资

Secondary productivity of macrobenthos in mangrove and salt marsh in Gaoqiao of Zhanjiang,Guangdong Province of South China

为了比较湛江高桥潮间带不同植物生境的大型底栖动物次级生产力,根据2010年4个季度湛江高桥潮间带生境的大型底栖动物数据,运用brEy经验公式计算不同植物生境的大型底栖动物次级生产力.结果表明:湛江高桥红树林和盐沼湿地不同生境大型底栖动物平均次级生产力为11.77gAfdM·M-2·A-1.其中,无瓣海桑生境次级生产力最高,为18.16gAfdM·M-2·A-1,其次是桐花树、盐地鼠尾粟和木榄生境,分别为17.67、8.34和2.92gAfdM·M-2·A-1.在4种生境中,木榄生境的年生产力/年均生物量(P/b)最高,为2.38,其次是无瓣海桑、盐地鼠尾粟和桐花树生境,分别为1.23、0.99和0.48.湛江高桥潮间带不同植物生境大型底栖动物次级生产力和P/b值的差异主要与总有机碳含量、食物类型和动物个体大小有关.In order to understand the secondary productivity of macrobenthos in different botanic habitats in intertidal zone in Gaoqiao of Zhanjiang,the Brey's empirical formula was applied to calculate the secondary productivity based on the investigations in the habitats of Sonneratia apetala,Aegiceras corniculatum,Sporobolus virginicus,and Bruguiera conjugate in four seasons,2010.The secondary productivity of the macrobenthos in the habitats in four seasons was averagely 11.77 g AFDM·m-2·a-1,being the highest in S.apetala habitat(18.16 g AFDM·m-2·a-1),followed by in A.corniculatum habitat(17.67 g AFDM·m-2·a-1),S.virginicus habitat(8.34 g AFDM·m-2·a-1),and B.conjugate habitat(2.92 g AFDM·m-2·a-1).The P/B ratio of the macrobenthos was the highest in B.conjugate habitat(2.38),followed by in S.virginicus,S.virginicus,and A.corniculatum habitats,with the values of 1.23,0.99,and 0.48,respectively.The differences in the secondary productivity and P/B ratio of the macrobenthos among the four botanic habitats were mainly related to the sediment total organic carbon,food type,and macrobenthos individual size.国家自然科学基金重点项目(30930017)资

Functional groups of macrofauna in Xunpu intertidal zone,Quanzhou Bay

为了比较不同生境的大型底栖动物功能群,根据在泉州湾蟳埔潮间带3种生境类型获得的大型底栖动物数据进行了分析。2011年4月-至2012年1月在泉州湾蟳埔潮间带获得大型底栖动物101种,其中浮游生物食者(Pl)、植食者(PH)、肉食者(C)、杂食者(O)和碎屑食者(d)物种数分别为21种、18种、21种、26种和15种。光滩(沙滩)、互花米草和牡蛎石三种生境大型底栖动物物种数、平均栖息密度、平均生物量、多样性指数的优势功能群多样化,表明泉州湾蟳埔潮间带大型底栖动物功能群的复杂化和多样化,这种特征是潮汐、生境、底质粒径等环境因子共同作用的结果。潮汐导致潮间带的空间异质性(沉积物粒径的差异),空间异质性导致大型底栖动物功能群组成的差异。互花米草、牡蛎石构成了多种小生境,有利于众多大型底栖动物的栖息。还讨论了大型底栖动物物种鉴定水平和功能群划分标准不同对功能群研究结果的影响。To study the functional groups of macrofauna in different biotopes, we analyzed the macrofauna data in three biotopes in Xunpu intertidal zone, Quanzhou Bay.A total of 101 benthic macrofauna were got.We divided the macrofauna into five functional groups, namely planktophagous group( Pl), phytophagous group( Ph), carnivorous group( C),omnivorous group(O) and detritivorous group(D).The species number of Pl, Ph, C, O and D was 21, 18, 21, 26 and 15 respectively.Dominant functional groups of macrofauna in species, mean density, mean biomass and diversity index were various in sandy, Spartina alterniflora and oyster-stone biotopes.The distribution characteristic indicated the complication and diversity in functional groups of macrofauna in Quanzhou Bay intertidal zone, and the joint action of tide, biotope,sediment particle size and other environmental factors.Tides result in spatial heterogeneity(different in sediment particle size) on intertidal zone, and spatial heterogeneity results in different functional groups of macrofauna.S.alterniflora and oyster-stone constitute various niches, which had advantages to many macrofaunas.This paper also discussed the influences of accuracy in macrofaunal identification and functional group classification criteria on the results of functional group research.国家自然科学基金(41176089

Research on the status of Amphioxus and other macrofauna resources in Xiamen waters

根据2014年8月在厦门黄厝和十八线潮下带海区,以及2014年1月-6月在厦门玩月坡潮间带获得的文昌鱼及其他大型底栖动物数据,对厦门海域文昌鱼及其他大型底栖动物资源现状进行了分析。黄厝潮下带大型底栖动物物种数、栖息密度和生物量分别为25种、80.7 Ind/M2和13.46 g/M2,十八线潮下带大型底栖动物物种数、栖息密度和生物量分别为25种、76.2 Ind/M2和6.53 g/M2。黄厝潮下带大型底栖动物丰度指数(d)平均值略低于十八线潮下带,而均匀度指数(J)和物种多样性指数(H')平均值略高于十八线潮下带。黄厝潮下带、十八线潮下带的文昌鱼栖息密度分别为51.1 Ind/M2和39.8 Ind/M2文昌鱼生物量分别为4.63 g/M2和3.68 g/M2。单因素方差分析表明,除了黄厝海区和十八线海区之间的文昌鱼体长呈显著差异,其余文昌鱼种群参数和大型底栖动物群落参数均无显著差异。文昌鱼栖息密度和生物量与底质粒径分选系数呈显著负相关。玩月坡潮间带低潮区文昌鱼及其他大型底栖动物资源贫乏。厦门海域文昌鱼的资源量与文昌鱼放流、海岸工程和采砂作业有关。The status of amphioxus and other macrofauna resources in Xiamen waters were analyzed according to the am-phioxus macrofauna samples collected in the subtidal zone in October 2014 and in the intertidal zone from January 2014 toJune 2014.The species number, density and biomass of marcofauna in Huangcuo subtidal zone were, 25, 80.7 ind/m2.and13.46 g/m2 respectively, and in 18 Line subtidal zone were 25, 76.2 ind/m2 and 6.53 g/m2 respectively.The average of theabundance index (d) of macrofauna in Huangcuo subtidal zone was slightly lower than that in 18 Line subtidal zone, butthe average of the evenness index (J) and the biodiversity index (H') was opposite.The densities of amphioxus inHuangcuo and 18 Line were 51.1 ind/m2 and 3.68 g /m2 respectively, and the biomasses of amphioxus in these two areas were4.63 g/m2 and 3.68 g /m2 respectively.The result of one-way ANOVA showed that, amphioxus length in these two areas wassignificantly different.The relationships between the density, biomass of amphioxus and sediment sorting coefficient had sig-nificant negative correlation.The resources of amphioxus and other macrofauna were scarce in the low tidal zone of Wanyuepowhich located in the eastern waters of Xiamen.The resources of amphioxus related to the amphioxus artificial releasing,coastal engineering and sand mining operations.海洋公益性行业科研专项(201305030-6); 厦门大学凌锋计划资助项

Size spectrum of benthic fauna in Zhanjiang Gaoqiao Mangrove Wetlands,China

在我国,红树林湿地底栖动物粒径谱研究很少。根据2010年1月、4月、7月、10月在湛江高桥红树林湿地获得的大型和小型底栖动物数据,构建了底栖动物生物量粒径谱,以期为湛江高桥红树林湿地的生态保护和持续利用提供科学依据。主要研究结果如下:(1)高桥红树林湿地生物量粒径谱基本为3峰模式。第一峰在-2粒级,主要由线虫构成;第二峰在4—12粒级,主要由寡毛类、多毛类和小个体甲壳类构成;第三峰在13—22粒级,主要由大个体腹足类、双壳类和甲壳类构成。(2)木榄、桐花树和无瓣海桑生境在0—4粒级之间出现一个明显的波谷,这个波谷介于线虫和寡毛类之间,是大型与小型底栖动物粒级交汇区。(3)高桥红树林湿地底栖动物正态化生物量粒径谱的斜率大于-1,截距为16.533—18.150。桐花树(AEgICErAS COrnICulATuM)和无瓣海桑(SOnnErATIA APETAlA)生境的截距、最小粒级的生物量(bMS)高于木榄(bruguIErA gyMnOrrHIzA)和盐地鼠尾粟(SPOrObOluS VIrgInICuS)生境,说明桐花树和无瓣海桑生境的底栖动物生产力水平较木榄和盐地鼠尾粟生境的高;秋季的截距、bMS较其他季节高,说明秋季的底栖动物生产力水平较其他季节高。The biomass size spectrum( BSS) theory was introduced by Sheldon et al.in 1972 to describe the features of marine pelagic ecosystems.Schwinghamer was the first to extend this concept to benthic assemblages.Traditionally,benthic communities are described by structural variables,such as abundance,species composition,and biodiversity indices.Analysis of the distribution of biomass by size is an ataxonomic approach to studying the structures and functions of the benthic communities.The introduction of the BSS theory provides a new method for benthic ecology research.Compared to taxonomic approaches for studying the structures and functions of benthic communities,the BSS theory is easier to operate,in which calculation errors caused by inaccurate taxonomic identification may be avoided.Because of the urgent need to understand the structures and functions of marine ecosystems,and to accurately detect the ecological systems,the fields of application for the BSS theory will become more extensive.In China,most studies on the size spectrum of zoobenthos have been conducted in the subtidal zone,with only a few studies having been conducted in the intertidal zone.In addition,no studies have been conducted in mangrove swamps.To provide a scientific basis for the ecological protection and sustainableuse of the Gaoqiao Mangrove Wetlands,the BSS of the benthic fauna in this area was constructed from macrofaunal and meiofaunal samples collected in January,April,July,and October 2010.The main results showed that the BSS of the benthic fauna in Gaoqiao Mangrove Wetlands exhibits 3 peaks.The first peak appeared at a grain size of- 2,and comprised nematodes.The second peak appeared at grain sizes of 4—12,and comprised oligochaetes,polychaetes,and small-bodied crustaceans.The third peak appeared at grain sizes of 13—22,and comprised large-bodied gastropods,bivalves,and crustaceans.For Aegiceras corniculatum,Sonneratia apetala and Bruguiera gymnorrhiza biotopes,there was a trough at grain sizes 0—4,which was the intersection grain size between macrofauna and meiofauna.The slope values of the normalized biomass size spectra( NBSS) were greater than- 1,while the intercepts ranged from 16.533 to 18.150.The intercepts and the biomass of minimum size( BMS) for A.corniculatum and S.apetala biotopes were higher than those in B.gymnorrhiza and Sporobolus virginicus biotopes.This result indicated that zoobenthic productivity in the A.corniculatum,and S.apetala biotopes were higher than that in the B.gymnorrhiza and S.virginicus biotopes.The intercept and BMS in fall were higher than those in other seasons,indicating that zoobenthic productivity was higher in fall compared to the other seasons.国家自然科学基金(41176089;41376113

Temporal and spatial variation of macrofaunal communities in Shenzhen Bay intertidal zone between 1995 and 2010

本文根据1995–2010年在深圳湾潮间带5条断面采集的大型底栖动物数据,分析了群落的物种数、栖息密度、多样性指数(H')、丰度指数(d)和多变量海洋底栖生物指数(M-AMbI)的时空变化。结果表明,物种数、多样性指数、丰度指数和多变量海洋底栖生物指数存在明显的空间差异,即距离深圳河口越近,大型底栖动物物种数越少,多样性指数、丰度指数和多变量海洋底栖生物指数越低。空间差异还体现在越靠近深圳河口的取样断面,大个体物种,如羽须鳃沙蚕(dEndrOnErEIS PInnATICIrrIS)和腺带刺沙蚕(nEAnTHES glAndICInCTA)的栖息密度越低,而小个体、生命周期短的小头虫(CAPITEllA CAPITATA)和寡毛类动物栖息密度所占的比例越高,丰度生物量比较(AbundAnCE bIOMASSCOMPArISOn,简称AbC)法证实了深圳湾潮间带大型底栖动物群落的空间差异。造成这种差异的原因推测是由于深圳市人口的增加和工、农业的发展,排入深圳河的污水量增加,导致距离深圳河越近,有机质含量越高。大型底栖动物群落的物种数、栖息密度、多样性指数、丰度指数、多变量海洋底栖生物指数的年和季节变化各不相同,没有明显的变化趋势。Using macrofaunal data collected at five transects in Shenzhen Bay intertidal zone between 1995 and 2010,we analyzed density,species diversity index(H'),richness index(d) and multivariate marine biotic index(M-AMBI).We found spatial differences in macrofaunal species number,species diversity,richness index and M-AMBI.Namely,the closer to Shenzhen River a sampling transect was located,the lower the macrofaunal species number,species diversity,richness index and multivariate marine biotic index.The most obvious spatial difference in terms of macrofaunal community structure was that densities of the larger-bodied species Dendronereis pinnaticirris and Neanthes glandicincta were low,while the densities of smaller and short-lived species including Capitella capitata and oligochaete animal were high at transect close to Shenzhen River.Abundance biomass comparison(ABC method) validated the spatial difference.Decreasing distance to the Shenzhen River was also related to increased levels of organic matter.We surmise that the spatial differences we observed were related to industrial,aquacultural and municipal wastes entering the Shenzhen River associated with increasing regional population and development during the study period.Yearly and seasonal variations of macrofaunal species number,density,species diversity index,richness index and multivariate marine biotic index were inconsistent,and we found no obvious trends.国家自然科学基金重点项目(30930017);广东内伶仃福田国家级自然保护区管理局资助项

Temporal and spatial variation of macrobenthic communities in the intertidal zone of Xunpu,Quanzhou Bay

为了比较泉州湾蟳埔潮间带沙滩、互花米草滩和牡蛎石泥滩3种生境(3个潮层)的大型底栖动物群落,2011年4月至2012年1月对3种生境的大型底栖动物进行了季度定量取样。在3种生境共获得85种大型底栖动物,其中环节动物39种,软体动物20种,节肢动物21种,刺胞动物、扁形动物、纽虫动物、星虫动物和脊索动物各1种。多维标度排序(MdS)分析表明,春季和冬季泉州湾蟳埔潮间带3种生境的大型底栖动物群落相似性较低;夏季和秋季互花米草滩与牡蛎石泥滩的大型底栖动物群落相似性较高,而与沙滩的大型底栖动物群落相似性较低。沙滩大型底栖动物群落的季节变化较明显,其次是牡蛎石泥滩,而互花米草滩大型底栖动物群落的季节变化较不明显。大型底栖动物栖息密度和生物量随着潮层降低而增加。单变量双因素方差分析(TWO-WAy AnOVA)表明,不同生境之间的大型底栖动物物种数、栖息密度、多样性指数、均匀度指数和丰度指数有显著差异,但生物量无显著差异,这是因为沙滩的物种数较少,栖息密度较低,但优势种弧边招潮蟹(uCA ArCuATA)个体较大,互花米草滩和牡蛎石泥滩的优势种为加州中蚓虫(MEdIOMASTuS CAlIfOrnIEnSIS),个体相对弧边招潮蟹小。不同季节之间大型底栖动物物种数、栖息密度、生物量和丰度指数有显著差异,但多样性指数和均匀度指数元显著差异,这是因为沙滩物种数少,但个体分布比较均匀,而互花米草滩和牡蛎石泥滩物种数较多,个体分布较不均匀。以上结果表明,潮汐、沉积物粒径和生境是影响潮间带大型底栖动物群落的主要因素。潮汐导致潮间带的空间异质性,空间异质性导致大型底栖动物群落的差异。This study was conducted in three different tidal levels within the intertidal zone of Xunpu,Quanzhou Bay,namely a sandy flat(on high-tide level),a Spartina alterniflora-dominated flat(on middle-tide flat) and an oysterdominated flat(on middle-tide flat).Investigations were repeated four times between 2011 and 2012.We aimed to understand the spatial and temporal variation of macrobenthic community structure and to evaluate differences among three habitats in the study area.A total of 85 macrobenthic species were recorded,including 39 annelida(38 polychaeta and 1oligochaeta),21 Crustacea,20 mollusca(6 gastropoda and 14 bivalvia),1 cnidaria,platyhelminthes,nemertea,sipuncula and chordata.The results of MDS analysis showed different macrobenthic communities among the three sites in spring and winter,while communities at the S.alterniflora-dormnated and oyster-dominated flats were similar in summer and autumn.Within each season,the species number in the S.alterniflora-dominaied flat was higher than that at the other two sites,probably due to a mixed sediment type and the shadowing of S.alterniflora acting as a shelter to animals.Instead,density and biomass of macrobenthos were higher at the two middle-tide flats than at the high-tidal flat.The temporal variation of macrobenthos was largest in the high-tidal flat and least in the S.alterniflora-dommated flat.With reduced tidal layer,density and biomass increased.Analysis of two-way ANOVA showed that in the three different habitats the species number,density,biodiversity,evenness and richness of macrobenthos were significantly different,while biomass was not.This because the species number and density were lower at the high-tide flat,dominated by the crab Uca arcuata,than at the other two sites,dominated by the polychaete Mediomastus californiensis.A comparison between different seasons showed that there were significant differences in species number,density,biomass and richness index,while diversity index and evenness index were not.This because the species number on the high-tide sand/lat was low,but distribution was more even.The results indicate that larger tidal ranges and longer submerged time in summer and autumn cause more similarity of macrobenthic communities in the S.alterniflora-dommated and oyster-dominated flats.Overall,tidal level,sediment particle size and habitat type were the main factors affecting the temporal and spatial distribution of macrobenthos in Xunpu intertidal zone,Quanzhou Bay.国家自然科学基金(41176089

Characteristic Analysis of Benthic Meiofauna Communities in Futian Mangrove Area of the Shenzhen Bay

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 572389) ind/(10; ${\rm{c}}{{\rm{m}}^2}$),平均生物量为(814 236)mug/(10; ${\rm{c}}{{\rm{m}}^2}$).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; ${\rm{c}}{{\rm{m}}^2}$) and (814236) mug/(10; ${\rm{c}}{{\rm{m}}^2}$),respectively.Univariate two-way ANOVA results; showed that there was no significant difference in group numbers and; meio-funal 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.国家自然科学基金; 海洋公益性行业科研专