生物多样性 ›› 2005, Vol. 13 ›› Issue (1): 1-11.doi: 10.1360/biodiv.040014

• 论文 •    下一篇

夏季黄海一断面底边界层动物多样性初步研究

章飞军1, 2, 张岩松1, 3, 张晓凌4, 郭学武1*, 梁振林5   

  1. 1 (农业部海洋渔业资源可持续利用重点开放实验室,黄海水产研究所,青岛266071)
    2(华东师范大学河口海岸国家重点实验室,上海 200062)
    3(胶州市环境保护局,胶州 266300)
    4(烟台大学海洋学院,烟台 264005)
    5(中国海洋大学水产学院,青岛 266003)
  • 收稿日期:2004-02-08 修回日期:2004-12-11 出版日期:2005-01-20
  • 通讯作者: 郭学武

Diversity of benthic boundary layer fauna in a section of the Yellow Sea in summer

Feijun Zhang1, 2, Yansong Zhang1, 3, Xiaoling Zhang4, Xuewu Guo1*, Zhenlin Liang5   

  1. 1 Key Laboratory for Sustainable Utilization of Marine Fisheries Resource, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Qingdao 266071
    2 State Key Laboratory of Estuarine and Coastal Research,East China Normal University,Shanghai 200062
    3 Jiaozhou Environmental Protection Bureau, Jiaozhou, Shandong 266300
    4 Ocean College, Yantai University, Yantai 264005
    5 Fisheries College, Ocean University of China, Qingdao 266003
  • Received:2004-02-08 Revised:2004-12-11 Online:2005-01-20
  • Contact: Xuewu Guo

2002年8月4日在黄海从青岛至济州岛断面的4个站位上,进行了底边界层动物昼夜连续采样, 对底边界层动物的多样性及其昼夜变化进行了分析。共鉴定出底边界层动物32种, 其中桡足类19种,端足类3种,涟虫3种,糠虾2种,毛颚类2种,枝角类2种,磷虾1种, 可划分为中型浮游动物、大型浮游动物和超底栖动物三个生物类群。主要种类有尖额真猛水蚤(Euterpina acutifrons)、挪威小毛猛水蚤(Microsetella norvegica)、戴氏猛水蚤(Danielssenia sp.)、小拟哲水蚤(Paracalanus parvus)和双刺纺缍水蚤(Acartia bifilosa)等。超底栖动物和中型浮游动物是两个主要类群。此外,桡足类幼体(无节幼体和桡足幼体)也是底边界层动物的重要组成部分。多样性分析显示: 底边界层动物在4个调查站位的均匀度(d)皆较高(0.728-0.915), 但种类较少(19-33), 故多样性指数(H′)较低(2.248-2.827)。超底栖动物的多样性指数相对较高, 中型浮游动物次之, 大型浮游动物较低。各类群的多样性指数在白天和夜间无显著性差异(P>0.05)。底边界层动物的丰度在细砂底质环境的1-3站最低, 在其他3个具有粉砂-粘土底质环境的站位皆较高。通过聚类分析, 可将这两种底质环境上的底边界层动物在26.6%相似性水平上分为两个类群。生物-环境匹配分析显示, 底边界层动物的种类及丰度除了与水深、水温有关外, 还与近底层颗粒有机碳(POC)、颗粒有机氮(PON)的沉降通量以及沉积物中值粒径密切相关。

The biodiversity and diel variation of the species in benthic boundary layer (BBL) fauna were analyzed in samples collected, using a Midicorer, at four stations in a section of the Yellow Sea from Qingdao to Chejudo Island. Thirty-two species were identified from the samples, including 19 copepods, 3 amphipods, 3 cumaceans, 2 mysids, 2 chaetognaths, 2 cladocerans, and 1 euphausiid. These species could be sorted into three biological assemblages: mesozooplankton, macrozooplankton, and hyperbenthos. The main species included Euterpina acutifrons, Microsetella norvegica, Danielssenia sp.,Paracalanus parvus, and Acartia bifilosa. The hyperbenthos dominated the BBL fauna in abundance. Copepod larvae (nauplii and copepodites) also formed an important component. In these samples, the BBL fauna exhibited high evenness (0.728-0.915), low species number (19-33) and low diversity indices (2.248-2.827). The diversity index of hyperbenthos and mesozooplankton was higher than that of macrozooplankton. No significant difference was found in diversity of each assemblage between daytime and nighttime (t-test,P>0.05). The abundance of the BBL fauna at station 1-3 with fine sand sediments was lower than that at the other three stations with silt-clay sediments. Based on these two sedimentary conditions, the BBL fauna could be formed into two Bray-Curtis clusters joining at a distance of 26.6%. The Biota-Environment Matching (BIOENV) analysis showed that the species and abundance of the BBL fauna were correlated closely not only to water depth and bottom water temperature, but also to the vertical fluxes of particulate organic carbon and nitrogen in the near bottom layer and to the nature of the sediment particulates.

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