Consistent increase in dimethyl sulfide (DMS) in response to high CO 2 in five shipboard bioassays from contrasting NW European waters
The ubiquitous marine trace gas dimethyl sulfide (DMS) comprises the greatest natural source of sulfur to the atmosphere and is a key player in atmospheric chemistry and climate. We explore the short-term response of DMS production and cycling and that of its algal precursor dimethyl sulfoniopropion...
Published in: | Biogeosciences |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2014
|
Subjects: | |
Online Access: | https://doi.org/10.5194/bg-11-4925-2014 https://doaj.org/article/25fa8dd68c5e47349549d407b2edfc55 |
id |
ftdoajarticles:oai:doaj.org/article:25fa8dd68c5e47349549d407b2edfc55 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:25fa8dd68c5e47349549d407b2edfc55 2023-05-15T17:52:00+02:00 Consistent increase in dimethyl sulfide (DMS) in response to high CO 2 in five shipboard bioassays from contrasting NW European waters F. E. Hopkins S. D. Archer 2014-09-01T00:00:00Z https://doi.org/10.5194/bg-11-4925-2014 https://doaj.org/article/25fa8dd68c5e47349549d407b2edfc55 EN eng Copernicus Publications http://www.biogeosciences.net/11/4925/2014/bg-11-4925-2014.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 doi:10.5194/bg-11-4925-2014 https://doaj.org/article/25fa8dd68c5e47349549d407b2edfc55 Biogeosciences, Vol 11, Iss 18, Pp 4925-4940 (2014) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2014 ftdoajarticles https://doi.org/10.5194/bg-11-4925-2014 2022-12-30T20:50:38Z The ubiquitous marine trace gas dimethyl sulfide (DMS) comprises the greatest natural source of sulfur to the atmosphere and is a key player in atmospheric chemistry and climate. We explore the short-term response of DMS production and cycling and that of its algal precursor dimethyl sulfoniopropionate (DMSP) to elevated carbon dioxide (CO 2 ) and ocean acidification (OA) in five 96 h shipboard bioassay experiments. Experiments were performed in June and July 2011, using water collected from contrasting sites in NW European waters (Outer Hebrides, Irish Sea, Bay of Biscay, North Sea). Concentrations of DMS and DMSP, alongside rates of DMSP synthesis and DMS production and consumption, were determined during all experiments for ambient CO 2 and three high-CO 2 treatments (550, 750, 1000 μatm). In general, the response to OA throughout this region showed little variation, despite encompassing a range of biological and biogeochemical conditions. We observed consistent and marked increases in DMS concentrations relative to ambient controls (110% (28–223%) at 550 μatm, 153% (56–295%) at 750 μatm and 225% (79–413%) at 1000 μatm), and decreases in DMSP concentrations (28% (18–40%) at 550 μatm, 44% (18–64%) at 750 μatm and 52% (24–72%) at 1000 μatm). Significant decreases in DMSP synthesis rate constants (μDMSP, d −1 ) and DMSP production rates (nmol d −1 ) were observed in two experiments (7–90% decrease), whilst the response under high CO 2 from the remaining experiments was generally indistinguishable from ambient controls. Rates of bacterial DMS gross consumption and production gave weak and inconsistent responses to high CO 2 . The variables and rates we report increase our understanding of the processes behind the response to OA. This could provide the opportunity to improve upon mesocosm-derived empirical modelling relationships and to move towards a mechanistic approach for predicting future DMS concentrations. Article in Journal/Newspaper Ocean acidification Directory of Open Access Journals: DOAJ Articles Biogeosciences 11 18 4925 4940 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
spellingShingle |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 F. E. Hopkins S. D. Archer Consistent increase in dimethyl sulfide (DMS) in response to high CO 2 in five shipboard bioassays from contrasting NW European waters |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
The ubiquitous marine trace gas dimethyl sulfide (DMS) comprises the greatest natural source of sulfur to the atmosphere and is a key player in atmospheric chemistry and climate. We explore the short-term response of DMS production and cycling and that of its algal precursor dimethyl sulfoniopropionate (DMSP) to elevated carbon dioxide (CO 2 ) and ocean acidification (OA) in five 96 h shipboard bioassay experiments. Experiments were performed in June and July 2011, using water collected from contrasting sites in NW European waters (Outer Hebrides, Irish Sea, Bay of Biscay, North Sea). Concentrations of DMS and DMSP, alongside rates of DMSP synthesis and DMS production and consumption, were determined during all experiments for ambient CO 2 and three high-CO 2 treatments (550, 750, 1000 μatm). In general, the response to OA throughout this region showed little variation, despite encompassing a range of biological and biogeochemical conditions. We observed consistent and marked increases in DMS concentrations relative to ambient controls (110% (28–223%) at 550 μatm, 153% (56–295%) at 750 μatm and 225% (79–413%) at 1000 μatm), and decreases in DMSP concentrations (28% (18–40%) at 550 μatm, 44% (18–64%) at 750 μatm and 52% (24–72%) at 1000 μatm). Significant decreases in DMSP synthesis rate constants (μDMSP, d −1 ) and DMSP production rates (nmol d −1 ) were observed in two experiments (7–90% decrease), whilst the response under high CO 2 from the remaining experiments was generally indistinguishable from ambient controls. Rates of bacterial DMS gross consumption and production gave weak and inconsistent responses to high CO 2 . The variables and rates we report increase our understanding of the processes behind the response to OA. This could provide the opportunity to improve upon mesocosm-derived empirical modelling relationships and to move towards a mechanistic approach for predicting future DMS concentrations. |
format |
Article in Journal/Newspaper |
author |
F. E. Hopkins S. D. Archer |
author_facet |
F. E. Hopkins S. D. Archer |
author_sort |
F. E. Hopkins |
title |
Consistent increase in dimethyl sulfide (DMS) in response to high CO 2 in five shipboard bioassays from contrasting NW European waters |
title_short |
Consistent increase in dimethyl sulfide (DMS) in response to high CO 2 in five shipboard bioassays from contrasting NW European waters |
title_full |
Consistent increase in dimethyl sulfide (DMS) in response to high CO 2 in five shipboard bioassays from contrasting NW European waters |
title_fullStr |
Consistent increase in dimethyl sulfide (DMS) in response to high CO 2 in five shipboard bioassays from contrasting NW European waters |
title_full_unstemmed |
Consistent increase in dimethyl sulfide (DMS) in response to high CO 2 in five shipboard bioassays from contrasting NW European waters |
title_sort |
consistent increase in dimethyl sulfide (dms) in response to high co 2 in five shipboard bioassays from contrasting nw european waters |
publisher |
Copernicus Publications |
publishDate |
2014 |
url |
https://doi.org/10.5194/bg-11-4925-2014 https://doaj.org/article/25fa8dd68c5e47349549d407b2edfc55 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Biogeosciences, Vol 11, Iss 18, Pp 4925-4940 (2014) |
op_relation |
http://www.biogeosciences.net/11/4925/2014/bg-11-4925-2014.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 doi:10.5194/bg-11-4925-2014 https://doaj.org/article/25fa8dd68c5e47349549d407b2edfc55 |
op_doi |
https://doi.org/10.5194/bg-11-4925-2014 |
container_title |
Biogeosciences |
container_volume |
11 |
container_issue |
18 |
container_start_page |
4925 |
op_container_end_page |
4940 |
_version_ |
1766159306238984192 |