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Sci Rep

Title:		Flux of the biogenic volatiles isoprene and dimethyl sulfide from an oligotrophic lake
Author(s):		Steinke M; Hodapp B; Subhan R; Bell TG; Martin-Creuzburg D;
Address:		"School of Biological Sciences, University of Essex, Wivenhoe Park, Colchester, CO4 3SQ, United Kingdom. msteinke@essex.ac.uk. University of Konstanz, Limnological Institute, Mainaustrasse 252, 78464, Konstanz, Germany. School of Biological Sciences, University of Essex, Wivenhoe Park, Colchester, CO4 3SQ, United Kingdom. Plymouth Marine Laboratory, Prospect Place, The Hoe, Plymouth, PL1 3DH, United Kingdom"
Journal Title:		Sci Rep
Year:		2018
Volume:		20180112
Issue:		1
Page Number:		630 -
DOI:		10.1038/s41598-017-18923-5
ISSN/ISBN:		2045-2322 (Electronic) 2045-2322 (Linking)
Abstract:		"Biogenic volatile organic compounds (BVOCs) affect atmospheric chemistry, climate and regional air quality in terrestrial and marine atmospheres. Although isoprene is a major BVOC produced in vascular plants, and marine phototrophs release dimethyl sulfide (DMS), lakes have been widely ignored for their production. Here we demonstrate that oligotrophic Lake Constance, a model for north temperate deep lakes, emits both volatiles to the atmosphere. Depth profiles indicated that highest concentrations of isoprene and DMS were associated with the chlorophyll maximum, suggesting that their production is closely linked to phototrophic processes. Significant correlations of the concentration patterns with taxon-specific fluorescence data, and measurements from algal cultures confirmed the phototrophic production of isoprene and DMS. Diurnal fluctuations in lake isoprene suggested an unrecognised physiological role in environmental acclimation similar to the antioxidant function of isoprene that has been suggested for marine biota. Flux estimations demonstrated that lakes are a currently undocumented source of DMS and isoprene to the atmosphere. Lakes may be of increasing importance for their contribution of isoprene and DMS to the atmosphere in the arctic zone where lake area coverage is high but terrestrial sources of BVOCs are small"
Keywords:
Notes:		"PubMed-not-MEDLINESteinke, Michael Hodapp, Bettina Subhan, Rameez Bell, Thomas G Martin-Creuzburg, Dominik eng Research Support, Non-U.S. Gov't England 2018/01/14 Sci Rep. 2018 Jan 12; 8(1):630. doi: 10.1038/s41598-017-18923-5"