CAJ | 학술논문

研究分析了南海南部海域不同粒径浮游动物春季和夏季的生物量和氮稳定同位素特征。结果表明，海域大部分站位春季浮游动物生物量高于夏季(p＜0.05)，而夏季在西南陆架区生物量出现极高值(受西南陆架上升流影响)，拉高了夏季的均值。根据粒径将浮游动物分成3组，分别是大于500μm组(大型)、380～500μm组(中型)和180～380μm组(小型)。大型浮游动物生物量在夏季的比例更高，而中型和小型浮游动物在春季的比例更高。春季浮游动物氮稳定同位素δ15N值高于夏季，大部分站位大型浮游动物的δ15N值高于中型，而小型浮游动物的δ15N值最低。广义加性模型(GAM)分析显示，小型浮游动物δ15N值受环境和生物因子的共同影响非常明显。
연구분석료남해남부해역불동립경부유동물춘계화하계적생물량화담은정동위소특정。결과표명，해역대부분참위춘계부유동물생물량고우하계(p＜0.05)，이하계재서남륙가구생물량출현겁고치(수서남륙가상승류영향)，랍고료하계적균치。근거립경장부유동물분성3조，분별시대우500μm조(대형)、380～500μm조(중형)화180～380μm조(소형)。대형부유동물생물량재하계적비례경고，이중형화소형부유동물재춘계적비례경고。춘계부유동물담은정동위소δ15N치고우하계，대부분참위대형부유동물적δ15N치고우중형，이소형부유동물적δ15N치최저。엄의가성모형(GAM)분석현시，소형부유동물δ15N치수배경화생물인자적공동영향비상명현。
Stable isotope analysis has emerged as one of the primary means to analyze the structure of food webs. Size fractionated zooplankton biomass and stable isotopes in the southern South China Sea during spring and summer 2013 were investigated. The results showed that zooplankton biomass in spring was higher than those in summer at most sites (p<0.05), while the maximal value was found in the southwestern continental shelf (influenced by coastal upwelling) with increased mean value of zooplankton biomass during summer. Zooplankton was divided into three groups according to size. Macro-zooplankton contributed more to the total zooplankton biomass during summer, while meso- and micro-zooplankton contributed more during spring. Mean δ15N value in spring was higher than that in summer, and the δ15N value of macro-zooplankton was higher than those of meso-and micro-zooplankton at most sites. Zooplankton biomass was negatively related to mixed layer depth and seawater temperature at 75-m depth, and positively related to salinity at 75 m, indicating that zooplankton biomass was influenced by vertical mixing. The result of GAM (generalized additive model) indicated that theδ15N value of micro-zooplankton was affected by combined impacts by environmental and biological factors.