中国海洋大学学报（自然科学版）2025，Vol.55Issue(3)：45-54,10.DOI:10.16441/j.cnki.hdxb.20240067
温度变化对典型海洋定鞭藻有机质C∶N∶P的影响
The Effect of Temperature on C∶N∶P Stoichiometry of Particulate Organic Matters in Typical Marine Haptophytes
摘要
Abstract
As sea surface temperature continues to rise,the growth and chemical composition of marine phytoplankton change clearly.Haptophytes is a key phytoplankton group in marine ecosystems.Typical species of haptophytes can photosynthesize and calcify simultaneously,driving marine carbon cycle.To date,most studies have focused on physiological changes of Emiliania huxleyi,while simultaneous studies on C∶N∶P stoichiometry of particulate organic matters(POC,PON,and POP)in various haptophytes are still scarce.In this study,the effect of temperature(12,18 and 24 ℃)on the per-con-tents and molar ratios of POC,PON and POP in typical haptophytes(Ge phyrocapsa oceanica and Iso-chrysis galbana)were tested.Overall,although warming had no significant effect on per-contents and molar ratios of POC,PON and POP in both species,its effect on the two species showed certain pat-terns.Specifically,warming reduced per-cell contents of POC,PON and POP(4％～25％)in both spe-cies.Per-cell contents of POC and PON were higher in G.oceanica,while per-cell contents of POP were higher in I.galbana.Warming resulted in a decrease in POC∶PON(～14％),an increase in PON∶POP(～20％),and no clear changes in POC:POP in both species.This study quantifies the effect of temperature on per-contents and molar ratios of POC,PON and POP in typical haptophytes,which is of great significance for a better understanding of the feedback of haptophytes on marine carbon cycle in the context of global climate change.关键词
全球变暖/颗石藻/球等鞭金藻/颗粒有机碳/颗粒有机氮/颗粒有机磷Key words
global warming/coccolithophores/Isochrysis galbana/particulate organic carbon/partic-ulate organic nitrogen/particulate organic phosphorus分类
海洋学引用本文复制引用
崔家璇,秦肖,涂佳敏,曹中,张传莉,丁杨,毕蓉..温度变化对典型海洋定鞭藻有机质C∶N∶P的影响[J].中国海洋大学学报（自然科学版）,2025,55(3):45-54,10.基金项目
崂山实验室科技创新项目(LSKJ202204005)资助Supported by Laoshan Laboratory Science and Technology Innovation Project(LSKJ202204005) （LSKJ202204005）
