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Article
Dimethylsulfide (DMS) and Dimethylsulfoniopropionate (DMSP) in Relation to Phytoplankton in the Gulf of Maine
Marine Ecology-Progress Series
  • David Townsend, University of Maine - Main
  • M. D. Keller
Document Type
Article
Publication Date
6-1-1996
Abstract/ Summary
Dimethylsulfide (DMS) and its precursor dimethylsulfoniopropionate (DMSP), in both particulate and dissolved forms, were surveyed during the early spring (March and April) and summer (July) of 1991 in coastal and offshore waters of the Gulf of Maine, USA, along with the hydrography, inorganic nutrients, phytoplankton chlorophyll, and phytoplankton taxonomic composition and abundance. Concentrations as high as 15 nM DMS (in April and July), 208 nM particulate DMSP (in April), and 101 nM dissolved DMSP (in July) were recorded. Total DMSP (dissolved plus particulate) reached 293 nM in a patch of the dinoflagellate Katodinium sp. in April. This is the first report of high DMSP concentrations in temperate waters in early spring associated with any organism other than the prymnesiophyte Phaeocystis pouchetii. There were no correlations between phytoplankton biomass, as measured by chlorophyll a, and DMS, and there were only slight correlations between chlorophyll a and DMSP in either dissolved or particulate form. As previously demonstrated by others, concentrations of intracellular (particulate) DMSP were related more to the presence of specific phytoplankton species rather than to overall phytoplankton biomass. The occurrence of high DMSP and DMS levels in early spring, comparable with or higher than those seen in summer maxima, at a time when bacterial activity is minimal and wind speeds are typically high may result in enhanced air-sea-fluxes of DMS.
Citation/Publisher Attribution
Townsend DW, Keller MD. Dimethylsulfide (DMS) and Dimethylsulfoniopropionate (DMSP) in Relation to Phytoplankton in the Gulf of Maine. Marine Ecology-Progress Series. 1996;137: 229-241.
Publisher Statement
Copyright 1996 Inter-Research.
DOI
10.3354/meps137229
Version
publisher's version of the published document
Citation Information
David Townsend and M. D. Keller. "Dimethylsulfide (DMS) and Dimethylsulfoniopropionate (DMSP) in Relation to Phytoplankton in the Gulf of Maine" Marine Ecology-Progress Series Vol. 137 Iss. 40546 (1996) p. 229 - 241
Available at: http://works.bepress.com/david_townsend/2/