热带海洋学报 ›› 2014, Vol. 33 ›› Issue (2): 52-59.doi: 10.11978/j.issn.1009-5470.2014.02.007

• 海洋生物学 • 上一篇    下一篇

南海北部深海小型底栖动物丰度和生物量

刘晓收1, 许嫚1, 张敬怀2, 牟刚3, 刘丹1, 李肖1   

  1. 1. 中国海洋大学海洋生命学院, 山东 青岛 266003;; 2. 国家海洋局南海环境监测中心, 广东 广州 510300;; 3. 国家海洋局大连海洋环境监测中心站, 辽宁 大连 116015
  • 收稿日期:2013-04-18 修回日期:2013-09-22 出版日期:2014-04-02 发布日期:2014-04-02
  • 作者简介:刘晓收(1979~), 男, 博士, 副教授, 主要从事生物海洋学与海洋生物生态学研究。E-mail: liuxs@ouc.edu.cn

Abundance and biomass of deep-sea meiofauna in the northern South China Sea

LIU Xiao-shou1, XU Man1, ZHANG Jing-huai2, MU Gang3, LIU Dan1, LI Xiao1   

  1. 1. College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China;; 2. South China Sea Environmental Monitoring Center, State Oceanic Administration, Guangzhou 510300, China;; 3. Dalian Marine Environmental Monitoring Central Station, State Oceanic Administration, Dalian 116015, China
  • Received:2013-04-18 Revised:2013-09-22 Online:2014-04-02 Published:2014-04-02
  • Contact: 国家自然科学基金项目(41006081); 中国海洋大学高校基本科研业务费项目(201013002, 201262010)

摘要: 2010年9月在南海北部5个深海站位和1个浅海站位进行了小型底栖动物和环境因子采样, 对小型底栖动物的丰度和生物量进行了定量研究。本次调查中, 共鉴定出10个小型底栖动物类群, 分别是线虫、桡足类、多毛类、介形类、甲壳类幼体、异足类、寡毛类、涡虫、无板类和等足类。从丰度来看, 线虫是绝对的优势类群, 占总丰度百分比为94.72%; 桡足类次之, 占2.70%; 多毛类再次, 占1.62%; 其他类群之和仅占0.96%。从生物量来看, 线虫的生物量最大, 占总生物量的53.83%; 其次是多毛类, 占32.17%; 居生物量第三位的是桡足类, 占7.14%; 其他类群之和占6.85%。小型底栖动物的丰度和干重生物量分别为566.12±635.61个·(10cm2)-1和398.43±431.98µg·?10cm 2? -1? 线虫的丰度和干重生物量分别为536.21±593.48个· (10cm 2? -1和214.48±237.39µg·?10cm 2? -1。研究站位线虫、桡足类、多毛类和小型底栖动物丰度, 小型底栖动物生物量与环境因子的相关分析表明, 影响线虫丰度、小型底栖动物丰度、小型底栖生物生物量的主要环境因子包括底层水pH值、沉积物粉砂黏土含量和有机质含量。单因素方差分析(One-way ANVOA)结果表明, 线虫丰度、桡足类丰度、小型底栖动物丰度和生物量在不同站位均有显著差异。与渤海、北黄海、南黄海、长江口、芽庄湾(越南)、大亚湾、北部湾、南海近海等海域相比, 本研究海域的小型底栖动物丰度和生物量偏低。

关键词: 小型底栖动物, 丰度, 生物量, 南海北部, 深海

Abstract: Meiofauna and environmental variables were sampled and analyzed at five deep-sea stations and one shallow-sea station in the northern South China Sea in September 2010. A total of 10 taxa of meiofauna were identified, including Nematoda, Copepoda, Polychaeta, Ostracoda, nauplii, Tanaidacea, Oligochaeta, Turbellaria, Aplacophora, and Isopoda. Nematoda was the most dominant group, accounting for 94.72% of the total meiofauna abundance, followed by Copepoda (2.70%), Polychaeta (1.62%) and other taxa that only account for 0.96%. In terms of biomass, Nematoda accounts for 53.83%, followed by Polychaeta (32.17%), Copepoda (7.14%) and other taxa that account for 6.85%. The average abundance and dry biomass of meiofauna were 566.12±635.61 ind·(10cm2)-1 and 398.43±431.98 µg·(10cm2)-1, respectively. Those of Nematoda were 536.21±593.48 ind·(10cm2)-1 and 214.48±237.39 µg·(10cm2)-1, respectively. Results of correlation analysis between abundance of nematode, copepod, polychaete, total meiofauna, biomass of total meiofauna and environmental factors showed that the main factors controlling nematode abundance, meiofaunal abundance and biomass were bottom-water pH, silt-clay percentage and sediment organic matter. Results of one-way analysis of variance (ANOVA) showed that there were significant differences for nematode abundance, copepod abundance, total meiofauna abundance, and biomass at different stations. Compared with the Bohai Sea, northern Yellow Sea, southern Yellow Sea, Yangtze River Estuary, Nha Trang Bay (Vietnam), Daya Bay, Beibu Gulf, and the coastal areas of South China Sea, the abundance and biomass of meiofauna in the present study were lower.

Key words: meiofauna, abundance, biomass, northern South China Sea, deep-sea

中图分类号: 

  • Q178.53