Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Qingdao 266100, PR China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, PR China.
College of Marine Life Sciences, Ocean University of China, Qingdao 266100, PR China.
Mar Pollut Bull. 2020 Mar;152:110940. doi: 10.1016/j.marpolbul.2020.110940. Epub 2020 Feb 17.
Distributions and variations of biogenic sulfur compounds including dimethylsulfide (DMS), dissolved and total dimethylsulfoniopropionate (DMSPd and DMSPt) and acrylic acid (AA) were investigated in coastal waters off Qingdao, China during the late-bloom and after-bloom periods of the Ulva prolifera bloom of 2015. DMSPd, DMS and AA concentrations after the bloom were significantly higher than during the late-bloom, but DMSPt concentrations in surface waters began to decrease. High concentrations of these compounds in the surface layer were associated with the bloom, with the exception of increased concentrations of DMSPt in the middle layer as decaying U. prolifera debris settled. The sea-to-air fluxes of DMS were estimated to be 18.08 and 24.24 μmol m d during the late-bloom and after-bloom, and about three times higher than the reported average fluxes of the Yellow Sea, which highlighted the impacts of U. prolifera blooms on DMS emissions.
在 2015 年浒苔藻华的晚生期和藻华消亡期，对中国青岛近海海域的生源硫化合物（包括二甲基硫（DMS）、溶解态和总二甲硫代丙酸（DMSPd 和 DMSPt）和丙烯酸（AA））的分布和变化进行了调查。藻华消亡期后，DMSPd、DMS 和 AA 的浓度明显高于藻华晚生期，而表层水中的 DMSPt 浓度开始下降。这些化合物在表层的高浓度与藻华有关，除了中上层 DMSPt 浓度因腐烂的浒苔藻华碎屑沉降而增加。藻华晚生期和藻华消亡期，DMS 的海-气通量分别估计为 18.08 和 24.24 μmol m d，大约是黄海报道的平均通量的三倍，这突出了浒苔藻华对 DMS 排放的影响。
