| 摘要: |
| 为探究南黄海和东海不同海域春季中华哲水蚤（Calanus sinicus）分布主要受何种环境因子影响及对各环境因子的响应差异，利用2020年春季南黄海海州湾至长江口以北海域和东海长江口海域、三门湾邻近海域、福建中部近岸海域调查数据，基于广义可加非线性模型（GAMs）分析了中华哲水蚤与环境因子的关系。结果表明：海州湾至长江口以北海域中华哲水蚤主要受温度、溶解氧、化学需氧量、Chl a、pH和氨氮的影响。其密度随着温度的增加呈一个波谷曲线变动，温度在14 ℃时密度最低；随着溶解氧的增加其密度呈一个波谷曲线变动，溶解氧含量在10 mg/L时中华哲水蚤密度最低；随化学需氧量增加其密度波动变化；随着Chl a浓度的增加其密度先下降再呈波动上升；随着pH的增加中华哲水蚤密度逐渐降低；随着氨氮浓度的增加中华哲水蚤密度逐渐增加。长江口海域中华哲水蚤主要受盐度、水深、化学需氧量和活性磷酸盐影响，随盐度和水深的增加其密度逐渐增加；随化学需氧量和活性磷酸盐浓度增加其密度逐渐降低。三门湾邻近海域中华哲水蚤主要受盐度、pH和透明度影响，随盐度的增加其密度逐渐增加；随pH的增加其密度逐渐降低；随透明度的增加其密度先降低后增加，透明度在1.2 m左右其密度最低。福建中部近岸海域中华哲水蚤主要受水深、透明度、温度和溶解氧影响，随水深的增加，其密度逐渐增加；随透明度的增加其密度波动增加；随温度和溶解氧的增加其密度逐渐降低。 |
| 关键词: 海洋生物学 浮游动物 春季 中华哲水蚤 环境因子 南黄海 东海 |
| DOI：10.3969/J.ISSN.2095-4972.20220427002 |
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| 基金项目:中国水产科学研究院东海渔业水域生态环境监测与修复创新团队（2020TD14）；国家重点基础研究发展计划(2010CB429005） |
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| Adaption of Calanus sinicus to the environment factors in bays and estuaries in spring season |
| YANG Jieqing,CHEN Yuange,ZHANG Dongrong,ZHOU Jin,CHAO Min,SHI Yunrong |
| (East China Sea Fisheries Research Institute, China Academy of Fisheries Science, Key Laboratory of East China Sea Fisheries Resources Development and Utilization, Ministry of Agriculture and Rural Affairs, Shanghai 200090, China;Key Laboratory of Engineering Oceanography, Second Institute of Oceanography, MNR, Hangzhou 310012, China) |
| Abstract: |
| A study on the adaptation of Calanus sinicus to environment factors was carried out to explore the distribution and the response of Calanus sinicus affected by the changing environmental factors in different waters of the South Yellow Sea and East China Sea in spring 2020. The generalized additive models were used to analysis the density changes of C. sinicus with the environmental factors. Results showed that C. sinicus was the dominant species in the survey area. The densities of C. sinicus in coastal waters from Haizhou Bay to Changjiang Estuary variated with temperatures with the lowest density at 14 ℃. The densities of C. sinicus varied with increasing chemical oxygen demand. It dropped down at first and then increased with increasing chlorophyll-a concentration. In addition, the densities of C. sinicus varied with increasing dissolved oxygen and reached the lowest at 10 mg/L. The densities reduced with the increasing pH and increased with the concentration of ammonia nitrogen rising. In Changjiang Estuary, the densities increased with the increasing water depth and salinity, decreased with rising chemical oxygen demand and active phosphate concentration. In waters of Sanmen Bay, it increased with increasing salinity, decreased with rising pH, decreased first then increased at the transparency of 1.2 meter. In the central Fujian coastal waters, the densities of C. sinicus increased with the increasing water depth, decreased with increasing temperature and dissolved oxygen and it fluctuated with increasing transparency. |
| Key words: marine biology zooplankton spring Calanus sinicus environmental factors South Yellow Sea East China Sea |
