高桥红树林湿地冬季海洋线虫群落结构

于2018年冬季,在广东湛江高桥红树林湿地布设6个站点进行沉积物样品采集,研究该区域海洋线虫的丰度、生物量、优势属、种类组成、生物多样性指数和群落结构等.结果表明,高桥红树林湿地海洋线虫丰度变化范围为(69.68±35.22)～(123.03±22.19)ind/cm2,平均丰度为(96.37±23.24)ind/cm...

Community Structure of Marine Nematodes in Winter in Gaoqiao Mangrove Wetland

In the winter of 2018,6 stations were set up to collect sediment samples to study the abundance,biomass,dominant genera,species composition,biodiversity index and community structure of marine nematodes in mangrove wetland of Gaoqiao,Zhanjiang,Guangdong.The results showed that the abundance of marine nematodes in Gaoqiao mangrove wetland ranged from （69.68±35.22）ind/cm2 to （123.03±22.19） ind/cm2,with an average abundance of （96.37±23.24） ind/cm2.The biomass of marine nematodes was （5574±28.17） μg/cm2 to （98.43±17.75） μg/cm2,and the average biomass was （77.10±31.52） μg/cm2.Marine nematodes were identified as 32 genera belonging to 15 families,and 6 dominant genera with more than 5% dominance were Sabatieria,Hopperia,Halichoanolaimus,Parasphaerolaimus,Paracanthonchus and Parodontophora.Sabatieria and Hopperia were distributed in six stations with the average dominance degrees of 47.84% and 24.32%,respectively.The feeding type of marine nematodes was dominated by 1B(non-selective sedimentary predator),and the high value of biodiversity index and low value of community dominance appeared at station 5 near the open sea.