Biological production of methyl bromide in the coastal waters of the North Sea and open ocean of the northeast Atlantic

J. M. Baker*, C. E. Reeves, P. D. Nightingale, S. A. Penkett, S. W. Gibb, A. D. Hatton

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

39 Citations (SciVal)

Abstract

Two separate studies in different oceanic regions provide evidence for the production of methyl bromide (CH3Br) by the prymnesiophyte Phaeocystis. A sampling program to study the seasonal cycle of CH3Br in a coastal area demonstrated that the seawater was supersaturated with respect to CH3Br for over 3 months of the year. The greatest saturation was observed during a bloom of Phaeocystis. Also, in situ field measurements demonstrated that CH3Br was supersaturated over a large region of the northeast Atlantic. A positive correlation was observed between CH3Br and dimethylsulphoniopropionate (DMSP), indicating that there was a source common to both compounds. An accessory pigment, hexanoyloxyfucoxanthin, which indicates the presence of prymnesiophytes, also correlated positively with CH3Br.

Original languageEnglish
Pages (from-to)267-285
Number of pages19
JournalMarine Chemistry
Volume64
Issue number4
DOIs
Publication statusPublished - Apr 1999
Externally publishedYes

Keywords

  • Air-sea gas exchange
  • Chlorophyll
  • Methyl bromide
  • Phaeocystis
  • Pigments
  • Sulphur

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