Bouillon, R. C.. Université du Québec à Rimouski, Rene_Bouillon@uqar.uquebec.ca
Lee, P. C.. Université du Québec à Rimouski, Peter_Lee@uqar.uquebce.ca
de Mora, S. J.. Université du Québec à Rimouski, Stephen_deMora@uqar.uquebec.ca
Levasseur, M. Institut Maurice-Lamontagne,
CONCENTRATIONS AND SPATIAL DISTRIBUTIONS OF DMSO, DMSP AND DMS IN THE NORTHWATER POLYNYA, BAFFIN BAY
This study presents the first measurements of dimethylsulfoxide (DMSO), dimethylsulfoniopropionate (DMSP) and dimethylsulfide (DMS) in an Arctic polynya. The Northwater Polynya in Baffin Bay is one of the largest polynyas in the Canadian Arctic. Formation of the polynya is thought to involve both latent and sensible heat mechanisms and as such, may cause different planktonic communities to evolve depending on which mechanism is dominant at any given location and time. This could also influence the distribution of biogenic sulfur compounds. In the period of April to June 1998 as part of the International North Water Project, concentrations of DMSO, DMSP and DMS were determined in water samples taken from the North Water Polynya. In addition, samples were collected for the analysis of DMSO and DMSP in particulate material. Data for particulate DMSO in samples of a marine origin are rare in scientific literature. This study examines the spatial distribution of DMSO, DMSP and DMS, and how the observed distribution of these compounds is influenced by the mechanisms responsible for the formation of the polynya.
Day: Thursday, Feb. 4
Location: Sweeney Center