Enrichment of amino acids in the sea surface microlayer at coastal and open ocean sites in the North Atlantic Ocean
We investigated how regional differences in environmental parameters influenced enrichment of amino acids in the sea surface microlayer relative to underlying bulk seawater. Concentrations and compositions of dissolved free (DFAA), dissolved combined (DCAA), and particulate (PAA) amino acids were me...
Published in: | Limnology and Oceanography |
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crwiley:10.4319/lo.2004.49.5.1605 2024-10-13T14:09:27+00:00 Enrichment of amino acids in the sea surface microlayer at coastal and open ocean sites in the North Atlantic Ocean Kuznetsova, Marina Lee, Cindy Aller, Josephine Frew, Nelson 2004 http://dx.doi.org/10.4319/lo.2004.49.5.1605 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flo.2004.49.5.1605 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lo.2004.49.5.1605 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Limnology and Oceanography volume 49, issue 5, page 1605-1619 ISSN 0024-3590 1939-5590 journal-article 2004 crwiley https://doi.org/10.4319/lo.2004.49.5.1605 2024-09-23T04:35:57Z We investigated how regional differences in environmental parameters influenced enrichment of amino acids in the sea surface microlayer relative to underlying bulk seawater. Concentrations and compositions of dissolved free (DFAA), dissolved combined (DCAA), and particulate (PAA) amino acids were measured in the sea surface microlayer and corresponding subsurface waters along a transect from coastal Massachusetts to open ocean waters of the Sargasso Sea. We also measured total bacteria concentrations, the percent bacteria with damaged membranes, and concentrations of virus‐like particles. Microlayer samples taken by two different techniques—screen sampler (thickness 200–400 µm) and rotating drum (thickness 30–60 µm)—were compared. On average, concentrations of bacteria and amino acids in both subsurface and microlayer water were higher in water masses with higher fluorescence, lower temperature and salinity, and historically higher chlorophyll. The microlayer was enriched with amino acids and bacteria and, in most instances, virus‐like particles. Consistent microlayer features such as nonuniform preferential enrichment with DFAA and PAA and a uniform difference in dissolved amino acid compositio between microlayer and subsurface water, were unrelated to environmental parameters measured. Wind, humidity, and light also had no apparent effects on amino acid concentration, composition, or enrichment in the microlayer in this study. Article in Journal/Newspaper North Atlantic Wiley Online Library Paa ENVELOPE(-53.483,-53.483,66.017,66.017) Limnology and Oceanography 49 5 1605 1619 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
We investigated how regional differences in environmental parameters influenced enrichment of amino acids in the sea surface microlayer relative to underlying bulk seawater. Concentrations and compositions of dissolved free (DFAA), dissolved combined (DCAA), and particulate (PAA) amino acids were measured in the sea surface microlayer and corresponding subsurface waters along a transect from coastal Massachusetts to open ocean waters of the Sargasso Sea. We also measured total bacteria concentrations, the percent bacteria with damaged membranes, and concentrations of virus‐like particles. Microlayer samples taken by two different techniques—screen sampler (thickness 200–400 µm) and rotating drum (thickness 30–60 µm)—were compared. On average, concentrations of bacteria and amino acids in both subsurface and microlayer water were higher in water masses with higher fluorescence, lower temperature and salinity, and historically higher chlorophyll. The microlayer was enriched with amino acids and bacteria and, in most instances, virus‐like particles. Consistent microlayer features such as nonuniform preferential enrichment with DFAA and PAA and a uniform difference in dissolved amino acid compositio between microlayer and subsurface water, were unrelated to environmental parameters measured. Wind, humidity, and light also had no apparent effects on amino acid concentration, composition, or enrichment in the microlayer in this study. |
format |
Article in Journal/Newspaper |
author |
Kuznetsova, Marina Lee, Cindy Aller, Josephine Frew, Nelson |
spellingShingle |
Kuznetsova, Marina Lee, Cindy Aller, Josephine Frew, Nelson Enrichment of amino acids in the sea surface microlayer at coastal and open ocean sites in the North Atlantic Ocean |
author_facet |
Kuznetsova, Marina Lee, Cindy Aller, Josephine Frew, Nelson |
author_sort |
Kuznetsova, Marina |
title |
Enrichment of amino acids in the sea surface microlayer at coastal and open ocean sites in the North Atlantic Ocean |
title_short |
Enrichment of amino acids in the sea surface microlayer at coastal and open ocean sites in the North Atlantic Ocean |
title_full |
Enrichment of amino acids in the sea surface microlayer at coastal and open ocean sites in the North Atlantic Ocean |
title_fullStr |
Enrichment of amino acids in the sea surface microlayer at coastal and open ocean sites in the North Atlantic Ocean |
title_full_unstemmed |
Enrichment of amino acids in the sea surface microlayer at coastal and open ocean sites in the North Atlantic Ocean |
title_sort |
enrichment of amino acids in the sea surface microlayer at coastal and open ocean sites in the north atlantic ocean |
publisher |
Wiley |
publishDate |
2004 |
url |
http://dx.doi.org/10.4319/lo.2004.49.5.1605 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flo.2004.49.5.1605 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lo.2004.49.5.1605 |
long_lat |
ENVELOPE(-53.483,-53.483,66.017,66.017) |
geographic |
Paa |
geographic_facet |
Paa |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Limnology and Oceanography volume 49, issue 5, page 1605-1619 ISSN 0024-3590 1939-5590 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.4319/lo.2004.49.5.1605 |
container_title |
Limnology and Oceanography |
container_volume |
49 |
container_issue |
5 |
container_start_page |
1605 |
op_container_end_page |
1619 |
_version_ |
1812816436839579648 |