极地研究2018，Vol.30Issue(1)：22-31,10.DOI:10.13679/j.jdyj.20170006
2012年夏季水团输送对挪威-格陵兰海营养盐及浮游植物群落结构的影响
IMPACTS OF WATER MASS ON THE NUTRIENTS AND PHYTOPLANKTON COMMUNITY STRUCTURES IN THE NORWEGIAN-GREENLAND SEAS DURING SUMMER 2012
摘要
Abstract
During the fifth Chinese National Arctic Research Expedition cruise in summer 2012, the nutrients and phytoplankton pigments in the Norwegian-Greenland seas were analyzed, and the effects of water mass transport on both the distribution of nutrients and the phytoplankton community structures were studied. The results showed that the mean concentrations of ni-trate, phosphate, and silicate were 9.0 (±5.0), 0.65 (±0.29), and 1.8 (±1.6) μmol·L-1, respectively, on section AT, and 8.9 (±3.8), 0.71 (±0.22), and 1.8 (±1.6) μmol·L-1, respectively, on section BB. The concentration of silicate in the upper waters of the Norwegian-Greenland seas was considerably lower than that of nitrate because of the limited availability of silicon. With increasing latitude, this limitation diminishes, assuming that the Arctic inflow transports silicon into this area. The distribu-tion of photosynthetic pigments indicated that diatoms were the principal assemblage in the Norwegian-Greenland seas, and that the diatoms were most likely to accumulate above the thermocline below the mixed layer. Prymnesiophyta were found most competitive under low nutrient conditions. In addition, because of the influence of the Atlantic inflow, phytoplankton were found to assemble in Norwegian-Atlantic flow regions where the temperature was higher and the nutrient supply was sufficient; thus, forming the differences observed in the phytoplankton distribution.关键词
挪威海/格陵兰海/水团/浮游植物/营养盐限制Key words
Norwegian Sea/Greenland Sea/water mass/phytoplankton/nutrient limitation引用本文复制引用
辜帆,金海燕,庄燕培,张扬,卢勇,王斌,陈建芳..2012年夏季水团输送对挪威-格陵兰海营养盐及浮游植物群落结构的影响[J].极地研究,2018,30(1):22-31,10.基金项目
国家自然科学基金(41506222,41076135,41276198)、南北极环境综合考察与评估专项(CHINARE2017-03-04,CHINARE2017-04-03)资助 （41506222,41076135,41276198）
