CAJ | 학술논문

为查明营养盐对不同赤潮藻不同生长阶段的影响，通过测定不同营养条件下培养的7种赤潮藻δ13 C和δ15 N值，比较不同生长阶段、不同藻种之间稳定同位素组成的差别。结果显示，7种赤潮藻δ13 C和δ15 N值存在一定的差异，海洋原甲藻具有较高的δ13 C值；海洋球石藻δ13 C值相对较小；新月菱形藻、威氏海链藻和塔玛亚历山大藻具有相似的δ13 C值。强壮前沟藻、海洋原甲藻和塔玛亚历山大藻δ15 N值要高于其他赤潮藻，威氏海链藻、海洋球石藻、中肋骨条藻和新月菱形藻具有相似的δ15 N值。塔玛亚历山大藻在NP、3N、1/3P和3P组别指数期δ13 C值要低于稳定期，其他6种赤潮藻指数期δ13 C值要高于稳定期。几种赤潮藻δ13 C值与NO3-和PO3-4浓度普遍呈显著正相关；δ15 N值与NO3-浓度普遍呈显著负相关，与PO3-4浓度普遍呈显著正相关。
위사명영양염대불동적조조불동생장계단적영향，통과측정불동영양조건하배양적7충적조조δ13 C화δ15 N치，비교불동생장계단、불동조충지간은정동위소조성적차별。결과현시，7충적조조δ13 C화δ15 N치존재일정적차이，해양원갑조구유교고적δ13 C치；해양구석조δ13 C치상대교소；신월릉형조、위씨해련조화탑마아력산대조구유상사적δ13 C치。강장전구조、해양원갑조화탑마아력산대조δ15 N치요고우기타적조조，위씨해련조、해양구석조、중륵골조조화신월릉형조구유상사적δ15 N치。탑마아력산대조재NP、3N、1/3P화3P조별지수기δ13 C치요저우은정기，기타6충적조조지수기δ13 C치요고우은정기。궤충적조조δ13 C치여NO3-화PO3-4농도보편정현저정상관；δ15 N치여NO3-농도보편정현저부상관，여PO3-4농도보편정현저정상관。
In this study , seven alga species , such as Thalassiosira weiss f logii , Emiliania huxleyi , Nitzschia closterium , Skeletonema costatum , Amphidinium carterae , Prorocentrum micans , and Alexandrium tamarense ,were used to evaluate the effects of different nutrients on their growth .Theδ13C andδ15 N values of these alga species were determined at different growth stag .The results showed that there were significant differences in the δ13 C andδ15 N values of different alga species ,and P .micans had the highest values whereas E .huxleyi showed the lowest values .No significant differences in the δ13 C valueswere found in the N.closterium,T.weissflogii and A .tamarense,while N.closterium,E. huxleyi ,S . costatum and N . closterium showed the non - significant differences in the δ15 N values . Except for the relatively lower values of δ13 C in the exponential phase of A .tamarense in the NP ,3N ,1/3P ,and 3P groups ,other alga species had the higher δ13 C values in the exponential phase than that in stationary phase .Pearson’s correlation analysis revealed that the δ13 C values of seven alga species were significantly positive correlation with the concentrations of NO 3- and PO3 -4 ,while the δ15 N values of alga species were significantly negative correlation with NO 3- and positive with PO3 -4 .