Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China.
Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China.
Mar Pollut Bull. 2021 Jan;162:111885. doi: 10.1016/j.marpolbul.2020.111885. Epub 2020 Dec 8.
Three cruises were conducted during an Ulva prolifera bloom in 2018 off the Qingdao coast to observe early-, late-, and after-bloom characteristics. Spatio-temporal changes in dimethylsulfide (DMS), dimethylsulphoniopropionate (DMSP), and acrylic acid (AA) and their relationships with environmental parameters were examined. Mesocosm experiments tested the effect of nutrient on the release of biogenic sulfur compounds during the decline period. Biogenic sulfur concentrations contrasted with those in non-bloom regions and reached their highest values during the late-bloom period. The average sea-to-air DMS flux was about 5 times higher than those of non-bloom regions. The mean concentrations of DMS and DMSP in the enclosures were 3-5 times those of in-situ seawater. Biogenic sulfur release was promoted by the addition of high concentrations of nutrients as U. prolifera was declining. The contribution of the U. prolifera bloom to atmospheric DMS was estimated to be 125 kg S d.
2018 年，在青岛沿海进行了三次绿潮爆发期间的巡航，以观察早期、晚期和爆发后的特征。考察了二甲硫（DMS）、二甲亚砜丙酸盐（DMSP）和丙烯酸（AA）的时空变化及其与环境参数的关系。中观实验测试了营养物质对衰退期生物硫化合物释放的影响。生物硫浓度与非爆发区的浓度形成对比，并在爆发后期达到最高值。海-气间 DMS 通量的平均值比非爆发区高出约 5 倍。围隔内 DMS 和 DMSP 的平均浓度是原位海水的 3-5 倍。随着绿潮的衰退，高浓度营养物质的添加促进了生物硫的释放。估计绿潮爆发对大气 DMS 的贡献为 125 公斤 S d。
