Microbial dimethylsulfoniopropionate (DMSP) dynamics along a natural iron gradient in the northeast subarctic Pacific
We characterized the effect of an inshore‐offshore gradient in Fe in the northeast subarctic Pacific on the bacterioplankton and phytoplankton assemblages and on the microbial cycling of particulate and dissolved dimethylsulfoniopropionate (DMSP p and DMSP d ) and dimethylsulfide (DMS). Averaged con...
Published in: | Limnology and Oceanography |
---|---|
Main Authors: | , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2010
|
Subjects: | |
Online Access: | http://dx.doi.org/10.4319/lo.2010.55.4.1614 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flo.2010.55.4.1614 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lo.2010.55.4.1614 |
id |
crwiley:10.4319/lo.2010.55.4.1614 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.4319/lo.2010.55.4.1614 2023-12-03T10:30:55+01:00 Microbial dimethylsulfoniopropionate (DMSP) dynamics along a natural iron gradient in the northeast subarctic Pacific Royer, Sarah-Jeanne Levasseur, Maurice Lizotte, Martine Arychuk, Michael Scarratt, Michael G. Wong, Chi Shing Lovejoy, Connie Robert, Marie Johnson, Keith Peña, Angelica Michaud, Sonia Kiened, Ronald P. 2010 http://dx.doi.org/10.4319/lo.2010.55.4.1614 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flo.2010.55.4.1614 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lo.2010.55.4.1614 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Limnology and Oceanography volume 55, issue 4, page 1614-1626 ISSN 0024-3590 1939-5590 Aquatic Science Oceanography journal-article 2010 crwiley https://doi.org/10.4319/lo.2010.55.4.1614 2023-11-09T13:20:49Z We characterized the effect of an inshore‐offshore gradient in Fe in the northeast subarctic Pacific on the bacterioplankton and phytoplankton assemblages and on the microbial cycling of particulate and dissolved dimethylsulfoniopropionate (DMSP p and DMSP d ) and dimethylsulfide (DMS). Averaged concentrations of total dissolved Fe (TDFe) decreased linearly with increasing water density along the transect, from 3.4 nmol L −1 at the two inshore stations to 1.0 nmol L −1 at the offshore stations, as a result of the vertical and lateral mixing between the Fe‐rich coastal water and the Fe‐poor Alaska Current. The Fe‐rich inshore stations were dominated by diatoms and characterized by low DMSP p : chlorophyll a (Chl a ) ratios (ca. 26 nmol [g −1 ) and bacterial DMS yield (< 4%). In contrast, the Fe‐poor offshore stations were dominated by prymnesiophytes and exhibited high DMSP p : Chl a ratios (ca. 84 nmol [g −1 ) and bacterial DMS yield (8%). Chl a , DMSPp, and the abundance of total bacteria and three bacterial clades ( Gammaproteobacteria , Roseobacter , and Betaproteobacteria ) were positively correlated with the TDFe gradient. At the Fe‐poor offshore stations, the positive correlation found between TDFe and the DMSPp : Chl a ratios suggests that Fe supplied by mixing stimulated DMSP production in the prymnesiophyte‐dominated assemblage, a response similar to that generally observed during the first days of most of the large‐scale ocean iron fertilizations (OIFs). These results suggest that the stimulation of DMSP production takes place whatever the Fe supply mode: atmospheric dust deposition, as simulated by OIFs, or mixing, as reported in this study. Article in Journal/Newspaper Subarctic Alaska Wiley Online Library (via Crossref) Pacific Limnology and Oceanography 55 4 1614 1626 |
institution |
Open Polar |
collection |
Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Aquatic Science Oceanography |
spellingShingle |
Aquatic Science Oceanography Royer, Sarah-Jeanne Levasseur, Maurice Lizotte, Martine Arychuk, Michael Scarratt, Michael G. Wong, Chi Shing Lovejoy, Connie Robert, Marie Johnson, Keith Peña, Angelica Michaud, Sonia Kiened, Ronald P. Microbial dimethylsulfoniopropionate (DMSP) dynamics along a natural iron gradient in the northeast subarctic Pacific |
topic_facet |
Aquatic Science Oceanography |
description |
We characterized the effect of an inshore‐offshore gradient in Fe in the northeast subarctic Pacific on the bacterioplankton and phytoplankton assemblages and on the microbial cycling of particulate and dissolved dimethylsulfoniopropionate (DMSP p and DMSP d ) and dimethylsulfide (DMS). Averaged concentrations of total dissolved Fe (TDFe) decreased linearly with increasing water density along the transect, from 3.4 nmol L −1 at the two inshore stations to 1.0 nmol L −1 at the offshore stations, as a result of the vertical and lateral mixing between the Fe‐rich coastal water and the Fe‐poor Alaska Current. The Fe‐rich inshore stations were dominated by diatoms and characterized by low DMSP p : chlorophyll a (Chl a ) ratios (ca. 26 nmol [g −1 ) and bacterial DMS yield (< 4%). In contrast, the Fe‐poor offshore stations were dominated by prymnesiophytes and exhibited high DMSP p : Chl a ratios (ca. 84 nmol [g −1 ) and bacterial DMS yield (8%). Chl a , DMSPp, and the abundance of total bacteria and three bacterial clades ( Gammaproteobacteria , Roseobacter , and Betaproteobacteria ) were positively correlated with the TDFe gradient. At the Fe‐poor offshore stations, the positive correlation found between TDFe and the DMSPp : Chl a ratios suggests that Fe supplied by mixing stimulated DMSP production in the prymnesiophyte‐dominated assemblage, a response similar to that generally observed during the first days of most of the large‐scale ocean iron fertilizations (OIFs). These results suggest that the stimulation of DMSP production takes place whatever the Fe supply mode: atmospheric dust deposition, as simulated by OIFs, or mixing, as reported in this study. |
format |
Article in Journal/Newspaper |
author |
Royer, Sarah-Jeanne Levasseur, Maurice Lizotte, Martine Arychuk, Michael Scarratt, Michael G. Wong, Chi Shing Lovejoy, Connie Robert, Marie Johnson, Keith Peña, Angelica Michaud, Sonia Kiened, Ronald P. |
author_facet |
Royer, Sarah-Jeanne Levasseur, Maurice Lizotte, Martine Arychuk, Michael Scarratt, Michael G. Wong, Chi Shing Lovejoy, Connie Robert, Marie Johnson, Keith Peña, Angelica Michaud, Sonia Kiened, Ronald P. |
author_sort |
Royer, Sarah-Jeanne |
title |
Microbial dimethylsulfoniopropionate (DMSP) dynamics along a natural iron gradient in the northeast subarctic Pacific |
title_short |
Microbial dimethylsulfoniopropionate (DMSP) dynamics along a natural iron gradient in the northeast subarctic Pacific |
title_full |
Microbial dimethylsulfoniopropionate (DMSP) dynamics along a natural iron gradient in the northeast subarctic Pacific |
title_fullStr |
Microbial dimethylsulfoniopropionate (DMSP) dynamics along a natural iron gradient in the northeast subarctic Pacific |
title_full_unstemmed |
Microbial dimethylsulfoniopropionate (DMSP) dynamics along a natural iron gradient in the northeast subarctic Pacific |
title_sort |
microbial dimethylsulfoniopropionate (dmsp) dynamics along a natural iron gradient in the northeast subarctic pacific |
publisher |
Wiley |
publishDate |
2010 |
url |
http://dx.doi.org/10.4319/lo.2010.55.4.1614 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flo.2010.55.4.1614 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lo.2010.55.4.1614 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Subarctic Alaska |
genre_facet |
Subarctic Alaska |
op_source |
Limnology and Oceanography volume 55, issue 4, page 1614-1626 ISSN 0024-3590 1939-5590 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.4319/lo.2010.55.4.1614 |
container_title |
Limnology and Oceanography |
container_volume |
55 |
container_issue |
4 |
container_start_page |
1614 |
op_container_end_page |
1626 |
_version_ |
1784256999834255360 |