| 摘要: |
| 为了解西太平洋菲律宾海浮游动物丰度和生物量的水平分布特征, 于2012年11月26日至2012年12月12日对菲律宾海上层海洋(0 - 200m)的浮游动物进行了调查。调查站位分别位于受赤道逆流(NECC)、棉兰老流(MC)、北赤道流(NEC)和黑潮(KC)影响的海域。通过比较浮游动物的丰度和生物量(分别用干重, 灰分, 无灰干重和含能量等指标表示), 探讨不同海流中浮游动物的分布特征。结果表明: 桡足类、毛颚类和水母类是菲律宾海浮游动物的三大主要类群。调查海域浮游动物丰度为11 – 116 ind./m3, NECC区平均丰度最高((96±28) ind./m3), 然后依次是MC区和KC区, NEC区最小((26±9) ind./m3)。在浮游动物生物量(干重)方面, 同样NECC区最高((3.25±1.11) mg/m3), 其次为MC区, 但是平均丰度最小的NEC区生物量超过KC区。造成这一差异的主要原因, 可能是由于KC区的浮游动物具有更高的含水量以及较小个体所占比例较高。不同水团之间浮游动物灰分、无灰干重和含能量的分布特征与干重相一致。结合环境因子分析显示, 上升流、叶绿素a、初级生产力、海流和温度等因素对浮游动物的分布具有一定影响。 |
| 关键词: 浮游动物 丰度 生物量 菲律宾海 |
| DOI：10.11693/hyhz20140100020 |
| 分类号: |
| 基金项目:中国科学院战略性先导科技专项“热带西太平洋海洋系统物质能量交换及其影响”, XDA11030200 号 |
|
| ABUNDANCE AND BIOMASS OF ZOOPLANKTON IN PHILIPPINE SEA IN WINTER 2012 |
|
DAI Lu-Ping,LI Chao-Lun,SUN Xiao-Xia,JI Peng and ZHANG Wu-Chang
|
|
Key Laboratory of Marine Ecology and Environmental Science, Institute of Oceanology, Chinese Academy of Science, Qingdao; University of Chinese Academy of Sciences, Beijing,Key Laboratory of Marine Ecology and Environmental Science, Institute of Oceanology, Chinese Academy of Science, Qingdao,Jiaozhou Bay Marine Ecosystem Research Station, Institute of Oceanology, Chinese Academy of Sciences, Qingdao,Key Laboratory of Marine Ecology and Environmental Science, Institute of Oceanology, Chinese Academy of Science, Qingdao,Key Laboratory of Marine Ecology and Environmental Science, Institute of Oceanology, Chinese Academy of Science, Qingdao
|
| Abstract: |
| To understand the abundance and biomass of zooplankton in the western Pacific Ocean, we sampled zooplankton in the upper ocean (0 - 200m) of the Philippine Sea during November 26-December 12, 2012. The survey stations were classified into the NECC, MC, NEC, and KC regions representing and being influenced by the North Equatorial Countercurrent, Mindanao Current, North Equatorial Current, and Kuroshio, respectively. The distribution of zooplankton in different water masses were studied in terms of zooplankton abundance and biomass. Dry mass (DM), ash, ash-free dry mass (AFDM) and energy content were used to indicate the zooplankton biomass. The results show that copepod was the major group, followed by chaetognaths, and medusae. Zooplankton abundances ranged between 11 and 116 ind./m3. On average, the largest abundance was in NECC region ((96±28) ind./m3), followed by MC, KC, and NEC region ((26±9) ind./m3) in turn. DM was the largest in NECC region ((3.25±1.11) mg/m3) and MC region the second. However, though minimum abundance was in NEC region, the biomass was higher than that in KC region ((0.52± 0.32) mg/m3). This difference was caused mainly by the higher water content and smaller body size of zooplankton in KC region. The distribution of water mass was consistent with abundance, while the distributions of AFDM and energy content were in accordance with DM. According to the analysis on the environmental factors, the distribution pattern of zooplankton was affected by upwelling, chlorophyll a, primary production, currents, and temperature. |
| Key words: zooplankton abundance biomass Philippine Sea |
