Nutrient availability determines dimethyl sulfide and isoprene distribution in the eastern Atlantic Ocean.

Zindler, Cathleen , Marandino, Christa, Bange, Hermann W. , Schütte, Florian and Saltzman, Eric S. (2014) Nutrient availability determines dimethyl sulfide and isoprene distribution in the eastern Atlantic Ocean. Open Access Geophysical Research Letters, 41 (9). pp. 3181-3188. DOI 10.1002/2014GL059547.

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Abstract

Continuous high-resolution underway measurements of dimethyl sulfide (DMS) and isoprene in the ocean surface were conducted from Germany to South Africa in November 2008. DMS, total dimethylsulfoniopropionate (DMSPt), isoprene and 19'-hexanoyloxyfucoxanthin (19'-hex) correlated in nitrogen-depleted regions when they were clustered by nitrogen to phosphorous ratio (N:P). The 19'-hex-containing algae groups might be a common source of DMS, DMSPt, and isoprene in the low N: P regions. Additionally, DMS and isoprene correlated in nitrate-depleted regions when they were clustered against nitrate concentrations. Correlations between DMS and isoprene were also found within nitrate-depleted eddies encountered along the cruise track. Eddies with N: P of similar to 2.8 showed the highest positive correlations between DMS and isoprene. We conclude that the DMS/isoprene relationships in the eastern Atlantic Ocean were influenced by nutrient availability, with implications for using nutrients to predict the DMS and isoprene concentrations over a range of oceanographic areas depleted in nitrogen

Document Type: Article
Research affiliation: OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-CH Chemical Oceanography
OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-PO Physical Oceanography
OceanRep > The Future Ocean - Cluster of Excellence
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1002/2014GL059547
ISSN: 0094-8276
Projects: SOPRAN, OCEANET, AWA, Future Ocean
Date Deposited: 12 Aug 2014 10:32
Last Modified: 22 May 2017 12:23
URI: http://oceanrep.geomar.de/id/eprint/25445

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