Biogeochemical Fate of DMSP in Seawater

ABSTRACTOCE-9907471这项工作将研究控制上层海洋中 DMSP（二甲基磺基丙酸盐）中硫的归宿的生化因素。 DMSP 是海洋富光带中最丰富、循环最迅速的还原硫化合物之一，也是化学活性气体二甲硫醚 (DMS) 的重要前体，人们认为二甲硫醚对全球气候有影响。这项工作将研究 DMSP/DMS 循环的性质以及硫在各种条件下各种海洋环境中的归宿。将研究细菌在这些物种循环中的作用。实地工作将在四次探险中进行，范围从墨西哥湾的温暖水域到拉布拉多海的寒冷水域。

ABSTRACTOCE-9907471This work will investigate the biochemical factors which control the fate of sulfur from DMSP (dimethylsulfoniopropionate) in the upper ocean. DMSP is one of the most abundant and rapidly cycled reduced sulfur compounds in the euphotic zone of the oceans, and is an important precursor of the chemically active gas dimethyl sulfide (DMS) which is thought to have an effect on global climate. The work will investigate the nature of DMSP/DMS cycling and the fate of the sulfur in a variety of ocean settings under a variety of conditions. The role of bacteria in the cycling of these species will be investigated. Field work will be carried out during four expeditions, ranging from the warm waters of the Gulf of Mexico to the cold waters of the Labrador Sea.