| 摘要: |
| 为分析夏季南黄海潮汐锋及其对浮游动物和初级生产分布的影响, 本文利用2011 年夏季航次的水文数据、小拟哲水蚤(Paracalanus parvus)样品及叶绿素a资料, 对南黄海潮汐锋区位置及小拟哲水蚤丰度和叶绿素a分布进行了研究, 探讨了夏季南黄海潮汐锋对小拟哲水蚤丰度和初级生产分布的影响。结果表明, 在调查水域存在明显的浅海潮汐锋; 小拟哲水蚤丰度高值(18267ind/m3)出现在锋区, 其低丰度值(1480ind/m3)出现于锋区附近混合区, 两者之间相差1 个数量级, 其丰度由远岸层化区至锋区逐渐升高。叶绿素a表层浓度高值(4.7μg/L)出现在锋区附近层化区, 锋区叶绿素a表层浓度较低(2.2μg/L)。锋区中出现小拟哲水蚤丰度高、表层叶绿素a浓度较低的现象, 表明桡足类的摄食压力对初级生产具有明显影响。可见, 潮汐锋是影响南黄海浮游生物分布的重要驱动因子。本研究可为深入探讨潮汐锋对跨锋区生物要素分布乃至海洋生态系统结构与功能的影响提供重要依据。 |
| 关键词: 潮汐锋 桡足类 小拟哲水蚤 初级生产 南黄海 |
| DOI：10.11693/hyhz20140400113 |
| 分类号: |
| 基金项目:国家自然科学基金项目, 40876066号, 41030858号 |
附件 |
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| INFLUENCE OF TIDAL FRONT ON DISTRIBUTION OF PARACALANUS PARVUS AND CHLOROPHYLL A IN SUMMER OVER SOUTH YELLOW SEA |
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LIU Guang-Xing1,2, KONG Wei2, YANG Gui-Peng3
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1.Key Laboratory of Ministry of Education for Marine Environment and Ecology, Ocean University of China, Qingdao 266100, China;2.College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China;3.College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China
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| Abstract: |
| To understand the influence of tidal front on the distribution and primary production of marine zooplankton, we studied the location of the tidal front, the abundance of Paracalanus parvus and concentration of chlorophyll a (chl a) using hydrological data and biological samples collected in summer 2011 in the South Yellow Sea, China. Results show that a tidal front existed in the surveyed area. The abundance of P. parvus was 10 times higher in the tidal front (18267ind/m3) than that in the adjacent mixed areas (1480ind/m3), and its abundance increased gradually from the stratification zone to the tidal front. The surface concentration of chl a in the stratification zone was higher(4.7μg/L) than that in the tidal front (2.2μg/L). High abundance of P. parvus and low concentration of chl a co-occurred in the tidal front, while low abundance of P. parvus and high concentration of chl a in the stratification zone, suggesting that the feeding pressure of copepod affected the primary production apparently. Therefore, a tidal front is an important driving factor affecting the distribution of plankton in the South Yellow Sea, and the influence of hydrological environment affects the biological element in a marine ecosystem. |
| Key words: tidal front copepoda Paracalanus parvus primary production South Yellow Sea |
