Contrasting distributions and cycling of reduced sulfur compounds in saline and estuarine waters of the coastal NE subarctic Pacific ...

• Main Author: Zheng, Zhiyin
• Format: Text
• Language: English
• Published: University of British Columbia 2021
• Subjects: Subarctic
• Online Access: https://dx.doi.org/10.14288/1.0400499; https://doi.library.ubc.ca/10.14288/1.0400499

The trace gas dimethylsulfide (DMS) is considered to be one of the most important sulfur compounds in the marine environment. Research on this volatile sulfur compound has been stimulated by its potential role in regulating regional and global climate, and its importance, along with the related sulfur compounds, dimethylsulfoniopropionate (DMSP) and dimethylsulfoxide (DMSO), as carbon and sulfur sources for microbes in the marine environment. The northeast subarctic Pacific (NESAP) is one of the global DMS hotspots, with significant spatial and temporal variability in DMS production. The difference in nutrient supply between coastal and offshore waters in this region drives significant variability in phytoplankton community structure, primary productivity, and thus sulfur cycling. The goal of this thesis is to characterize the patterns of sulfur cycling in two hydrographically distinct regimes in the NESAP, and to provide insights into the relative contribution of various DMS production pathways. Chapter 2 ...