| 摘要: |
| 2000 年秋季(10 月21 日－11 月7 日)和2001 年春季(4 月30 日－5 月15 日)用稀释培养法在黄海和东海测定了微型浮游动物对浮游植物的摄食, 结果表明: (1)秋季表层浮游植物叶绿素a (Chl a)的内禀生长率为0.40～0.59 d?1, 微型浮游动物对Chl a 的摄食率为0.21～0.63 d?1, 对Chl a 现存量的摄食压力为19%～47% d?1, 对Chl a 生产力的摄食压力为59%～108% d?1。深层Chl a 的内禀生长率为0.25～0.65d?1, 微型浮游动物对Chl a 的摄食率为0.29～0.53 d?1, 对浮游植物Chl a 现存量的摄食压力为25%～41%d?1, 对Chl a 生产力的摄食压力为86%～114% d?1。(2) 春季表层Chl a 的内禀生长率为0.01～0.81 d?1, 微型浮游动物对Chl a 的摄食率为0.13～0.54 d?1, 对Chl a现存量的摄食压力为12%～42% d?1, 对Chl a 生产力的摄食压力为21%～3920% d?1。深层Chl a 的内禀生长率为0.55～0.60 d?1, 微型浮游动物对Chl a的摄食率为0.57%～0.63 d?1, 对Chl a 现存量的摄食压力为44%～47% d?1, 对Chl a 生产力的摄食压力为103%～104% d?1。 |
| 关键词: 微型浮游动物 稀释培养 摄食压力 黄海 东海 |
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| 基金项目:国家自然科学基金(40876085); 国家973 计划项目(2011CB409804);国家自然科学基金(40821004); 中国科学院创新项目(KZCX2-YW-213-3) |
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| Grazing pressure of microzooplankton on phytoplankton in spring and autumn in the Yellow Sea and East China Sea |
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| Abstract: |
| Microzooplankton grazing on phytoplankton was estimated using dilution incubation method in Autumn (21 October-7 November) 2000 and Spring (30 April-15 May) 2001 in Yellow Sea and East China Sea. (1) In Autumn. In the surface waters, the potential growth rate of Chlorophyll a (Chl a) was in a range of 0.40～0.59 d?1. Microzooplankton grazing rates on Chl a were 0.21～0.63 d?1. As a result, microzooplankton grazing pressure on Chl a standing stock and primary production were in the range of 19%～47% d?1 and 59%～108% d?1, respectively. In deep waters, the potential growth rates of Chl a were in a range of 0.25～0.65 d?1. Microzooplankton grazing rates on Chl a were 0.29～0.53 d?1. As a result, microzooplankton grazing pressure on Chl a standing stock and primary production were in the range of 25%～41% d?1 and 86%～114% d?1, respectively. (2) In spring. In the surface waters, the potential growth rates of Chl a were in a range of 0.01～0.81 d?1. Microzooplankton grazing rates on Chl a were 0.13～0.54 d?1. As a result, microzooplankton grazing pressure on Chl a standing stock and primary production were in the range of 12%～42% d?1 and 21%～3 920% d?1, respectively. In deep waters, the potential growth rates of Chl a were in a range of 0.55～0.60 d?1. Microzooplankton grazing rates on Chl a were 0.57～0.63 d?1. As a result, microzooplankton grazing pressure on Chl a standing stock and primary production were in the range of 44%～47% d?1 and 103%～104% d?1, respectively. |
| Key words: microzooplankton grazing Yellow Sea East China Sea |
