水生生物学报2018，Vol.42Issue(4)：865-870,6.DOI:10.7541/2018.106
淡水中型浮游动物群体与悬浮物碳氮磷比耦联研究
INVESTIGATING THE STOICHIOMETRIC COUPLING BETWEEN MESOZOOPLANKTON ASSEMBLAGE AND SESTON IN FRESHWATERS
摘要
Abstract
Food quality can significantly affect the phosphorus content, growth, reproduction, as well as physiological behavior of zooplankton, leading to regulate the energy transfer efficiency at the primary producer-consumer interface. However, the elemental coupling between zooplankton and food is scarcely observed at the community level. In this study, the elemental coupling and the elemental imbalances between seston and mesozooplankton assemblage in addi-tion to the ecological impacts of such imbalances on zooplankton-phytoplankton interaction were detailed by analyzing the compositions of carbon, nitrogen, and phosphorus in seston and mesozooplankton assemblage derived from 13 samples containing water bodies in the Hubei province, China. The achieved results showed that both C∶N and C∶P ra-tios in mesozooplankton were positively correlated with the corresponding ratios in seston. Besides, the elemental im-balances between seston and mesozooplankton were positively correlated with the corresponding seston ratio (C∶N, r=0.97, P＜0.001; C∶P, r=0.81, P=0.001). Further analysis also revealed that the energy transfer efficiency between zo-oplankton and phytoplankton declined with the increase of elemental imbalance in C∶P ratio (r= –0.58, P=0.037). Moreover, a similar decline in zooplankton biomass was found as well as increase of imbalance in C∶P ratio (r= –0.59, P=0.033). These results indicated that seston stoichiometry could remarkably impact the elemental stoichiometry of mesozooplankton assemblage, and the elemental imbalances tended to be greater with the increase of seston stoi-chiometry; consequently, the energy transferred to mesozooplankton was decreased as well.关键词
悬浮物/食物质量/生态化学计量学/能量传递效率Key words
Seston/Food quality/Ecological stoichiometry/Energy transfer efficiency分类
生物科学引用本文复制引用
耿红,程凤,王松波,杜鸿,吴来燕..淡水中型浮游动物群体与悬浮物碳氮磷比耦联研究[J].水生生物学报,2018,42(4):865-870,6.基金项目
国家自然科学基金(31200361) （31200361）
中央高校专项基金(CZY16012和CZP17012)资助 [Supported by the National Natural Science Foundation of China (31200361) （CZY16012和CZP17012）
the Special Fund for Basic Scientific Research of Central Colleges (CZY16012 and CZP17012)] （CZY16012 and CZP17012）
