E 2008, by the American Society of Limnology and Oceanography, Inc. Major bacterial contribution to the ocean reservoir of detrital organic carbon and nitrogen
Bacterial biomarkers (D-amino acids and muramic acid) were measured in various organic matter size fractions collected in the North Pacific and North Atlantic, and they were used to quantitatively estimate bacterial contributions to particulate and dissolved organic carbon and nitrogen reservoirs. T...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.228.1009 2023-05-15T17:34:12+02:00 E 2008, by the American Society of Limnology and Oceanography, Inc. Major bacterial contribution to the ocean reservoir of detrital organic carbon and nitrogen Karl Kaiser Ronald Benner The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.228.1009 http://www.aslo.org/lo/toc/vol_53/issue_1/0099.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.228.1009 http://www.aslo.org/lo/toc/vol_53/issue_1/0099.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.aslo.org/lo/toc/vol_53/issue_1/0099.pdf text ftciteseerx 2016-01-07T18:35:42Z Bacterial biomarkers (D-amino acids and muramic acid) were measured in various organic matter size fractions collected in the North Pacific and North Atlantic, and they were used to quantitatively estimate bacterial contributions to particulate and dissolved organic carbon and nitrogen reservoirs. The origins and yields of biomarkers were determined in cultured marine bacteria, and the results indicated that D-amino acids are derived from numerous macromolecules in addition to peptidoglycan and are not solely from peptidoglycan. Bacterial detritus was a major component of particulate organic matter (POM) and is an important source of submicronsize particles and colloids in the ocean. Peptidoglycan was a substantial component of POM but not of dissolved organic matter (DOM). Compositional differences between POM and DOM primarily reflected the selective incorporation of specific bacterial components into these reservoirs. Autotrophic and heterotrophic bacterial sources were not quantified separately, but the presence of D-aspartic acid (D-Asx) and D-serine (D-Ser) suggested that heterotrophic sources were substantial. The average reactivity of bacterial organic matter was comparable to that of the bulk organic carbon pool. Bacteria were important sources of labile, semilabile, and refractory dissolved organic carbon. Bacterial organic matter accounted for,25 % of particulate and dissolved organic carbon and,50 % of particulate and dissolved organic nitrogen. These results demonstrate the Text North Atlantic Unknown Pacific |
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English |
description |
Bacterial biomarkers (D-amino acids and muramic acid) were measured in various organic matter size fractions collected in the North Pacific and North Atlantic, and they were used to quantitatively estimate bacterial contributions to particulate and dissolved organic carbon and nitrogen reservoirs. The origins and yields of biomarkers were determined in cultured marine bacteria, and the results indicated that D-amino acids are derived from numerous macromolecules in addition to peptidoglycan and are not solely from peptidoglycan. Bacterial detritus was a major component of particulate organic matter (POM) and is an important source of submicronsize particles and colloids in the ocean. Peptidoglycan was a substantial component of POM but not of dissolved organic matter (DOM). Compositional differences between POM and DOM primarily reflected the selective incorporation of specific bacterial components into these reservoirs. Autotrophic and heterotrophic bacterial sources were not quantified separately, but the presence of D-aspartic acid (D-Asx) and D-serine (D-Ser) suggested that heterotrophic sources were substantial. The average reactivity of bacterial organic matter was comparable to that of the bulk organic carbon pool. Bacteria were important sources of labile, semilabile, and refractory dissolved organic carbon. Bacterial organic matter accounted for,25 % of particulate and dissolved organic carbon and,50 % of particulate and dissolved organic nitrogen. These results demonstrate the |
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The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Karl Kaiser Ronald Benner |
spellingShingle |
Karl Kaiser Ronald Benner E 2008, by the American Society of Limnology and Oceanography, Inc. Major bacterial contribution to the ocean reservoir of detrital organic carbon and nitrogen |
author_facet |
Karl Kaiser Ronald Benner |
author_sort |
Karl Kaiser |
title |
E 2008, by the American Society of Limnology and Oceanography, Inc. Major bacterial contribution to the ocean reservoir of detrital organic carbon and nitrogen |
title_short |
E 2008, by the American Society of Limnology and Oceanography, Inc. Major bacterial contribution to the ocean reservoir of detrital organic carbon and nitrogen |
title_full |
E 2008, by the American Society of Limnology and Oceanography, Inc. Major bacterial contribution to the ocean reservoir of detrital organic carbon and nitrogen |
title_fullStr |
E 2008, by the American Society of Limnology and Oceanography, Inc. Major bacterial contribution to the ocean reservoir of detrital organic carbon and nitrogen |
title_full_unstemmed |
E 2008, by the American Society of Limnology and Oceanography, Inc. Major bacterial contribution to the ocean reservoir of detrital organic carbon and nitrogen |
title_sort |
e 2008, by the american society of limnology and oceanography, inc. major bacterial contribution to the ocean reservoir of detrital organic carbon and nitrogen |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.228.1009 http://www.aslo.org/lo/toc/vol_53/issue_1/0099.pdf |
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Pacific |
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Pacific |
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North Atlantic |
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North Atlantic |
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http://www.aslo.org/lo/toc/vol_53/issue_1/0099.pdf |
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http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.228.1009 http://www.aslo.org/lo/toc/vol_53/issue_1/0099.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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