Gradients in dimethylsulfide, dimethylsulfoniopropionate, dimethylsulfoxide, and bacteria near the sea surface
Zemmelink, Hendrik J.
Houghton, Leah A.
Sievert, Stefan M.
Frew, Nelson M.
Dacey, John W. H.
MetadataShow full item record
KeywordMarine sulfur; Bacteria; Depth profiles; Microlayer sampling; Coastal waters; DMS; DMSP; DMSO
Gradients of dimethylsulfide (DMS), dimethylsulfoniopropionate (DMSP), dimethylsulfoxide (DMSO), and bacterial numbers and diversity from the surface microlayer to 500 cm depth were assessed in coastal waters surrounding the Martha’s Vineyard Coastal Observatory, Massachusetts, USA. Microlayer samples were collected with a surface skimmer: a partially submerged, rotating glass cylinder (‘drum’) that allows the collection of a thin layer of water by adherence to the drum. A depletion of DMS towards the water surface (10 cm) was found at all sampling days, with largest gradients during rough sea surface conditions. The steep gradients show that gas fluxes and transfer velocities, based on the concentration disequilibrium between the water and the atmosphere, need to be based on near surface gas concentration values. Elevated DMSP, DMSO concentrations and bacterial numbers were found at the sea surface during calm conditions. Although degassing and photo-oxidation on the skimmer will bias the microlayer data, the results indicate stratification of DMSP, DMSO and bacteria during periods of smooth sea surface conditions.
Author Posting. © Inter-Research, 2005. This article is posted here by permission of Inter-Research for personal use, not for redistribution. The definitive version was published in Marine Ecology Progress Series 295 (2005): 33-42, doi:10.3354/meps295033.
Suggested CitationMarine Ecology Progress Series 295 (2005): 33-42
Showing items related by title, author, creator and subject.
Doherty, Mary; Yager, Patricia L.; Moran, Mary Ann; Coles, Victoria J.; Fortunato, Caroline S.; Krusche, Alex V.; Medeiros, Patricia M.; Payet, Jérôme P.; Richey, Jeffrey E.; Satinsky, Brandon; Sawakuchi, Henrique O.; Ward, Nicholas D.; Crump, Byron C. (Frontiers Media, 2017-05-23)Spatial and temporal patterns in microbial biodiversity across the Amazon river-ocean continuum were investigated along ∼675 km of the lower Amazon River mainstem, in the Tapajós River tributary, and in the plume and coastal ...
Factors affecting the bacterial community composition and heterotrophic production of Columbia River estuarine turbidity maxima Herfort, Lydie; Crump, Byron C.; Fortunato, Caroline S.; McCue, Lee-Ann; Campbell, Victoria; Simon, Holly M.; Baptista, Antonio; Zuber, Peter (John Wiley & Sons, 2017-08-06)Estuarine turbidity maxima (ETM) function as hotspots of microbial activity and diversity in estuaries, yet, little is known about the temporal and spatial variability in ETM bacterial community composition. To determine ...
Genomic and physiological characterization of Bacilli isolated from salt-pans with plant growth promoting features Petrillo, Claudia; Castaldi, Stefany; Lanzilli, Mariamichela; Selci, Matteo; Cordone, Angelina; Giovannelli, Donato; Isticato, Rachele (Frontiers Media, 2021-09-13)Massive application of chemical fertilizers and pesticides has been the main strategy used to cope with the rising crop demands in the last decades. The indiscriminate use of chemicals while providing a temporary solution ...