Aspects of the biogeochemistry of carbohydrates in aquatic environments

Mopper, Kenneth

doi:10.1575/1912/1247

Cited by 19 publications

(11 citation statements)

References 26 publications

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“…For comparison, Mopper and Degens (1972) found THAA-N:TN ratios ranging from 0.5 to 0.8 in mixed marine plankton samples from diverse sites in the Atlantic and Pacific Oceans. Sediment trap material collected during Know 73-2 near our stations 4, 5A, and 6 had THAA-N:TN ratios of 0.3-l (mean 0.7) for five samples collected at the base of the euphotic zone and THAA-N:TN ratios of 0.5 and 0.6 for two samples collected at 52-m depth (Lee and Cronin 1982).…”

Section: Discussionmentioning

confidence: 98%

Peru upwelling region sediments near 15°S. 2. Dissolved free and total hydrolyzable amino acids1

Henrichs

Farrington

Lee

1984

Limnology & Oceanography

118

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Dissolved free and total hydrolyzable amino acid concentrations were measured in five cores of Peru coastal sediments collected along a 70-km transect perpendicular to the coast in the upwelling region near 15% at depths of 92, 268, 506, 1,428, and 5,300 m. Total hydrolyzable amino acids (THAA) made up 20-70% of the total nitrogen in these sediments, with the highest proportions in surface sediments of the 92-, 268-, and 506-m cores. Variations in THAA content with depth were attributable to a combination of remineralization and varying inputs to the sediment surface over time. The individual amino acid rcsiduc composition was remarkably uniform, both with depth in core and bctwecn stations.Dissolved free amino acid (DFAA) concentrations ranged from about 1 PM to >200 FM. The highest concentrations were found near the sediment-water interface of sulfide-containing sediments. Concentrations generally decreased with depth in sediment. Glutamic acid was a major constituent of nearly all samples, suggesting a bacterial source for most of the DFAA. A nonprotein amino acid, ,&aminoglutaric acid, was also a major component and was the most abundant DFAA below 20-cm depth in the 92-, 268-, and 506-m cores. The major trends in DFAA concentration and composition appear to bc the net result of biological (largely bacterial) sources and sinks.

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Section: Discussionmentioning

confidence: 98%

Peru upwelling region sediments near 15°S. 2. Dissolved free and total hydrolyzable amino acids1

Henrichs

Farrington

Lee

1984

Limnology & Oceanography

118

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“…Some portion of the labile materials are are in kinetically less available sites within the plankton. In EDTA-leaching experiments with plankton samples, Mopper and Degens(1972) reported the release of significant fractions of the total hydrolyzable monosaccarides and amino acids. This was attributed to the extraction of metals functioning as binding bridges between these organic ligands and other organic surface sites.…”

Section: Labile Organic Associationsmentioning

confidence: 99%

The trace element geochemistry of marine biogenic particulate matter

Collier

Edmond

1984

Progress in Oceanography

412

217

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“…Some portion of the labile materials are are in kinetically less available sites within the plankton. In EDTA-leaching experiments with plankton samples, Mopper and Degens(1972) reported the release of significant fractions of the total hydrolyzable monosaccarides and amino acids. This was attributed to the extraction of metals functioning as binding bridges betweèn these organic ligands and other organic surface sites.…”

Section: Labile Organic Associationsmentioning

confidence: 99%

Trace element geochemistry of marine biogenic particulate matter

Collier¹

1980

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Aspects of the biogeochemistry of carbohydrates in aquatic environments

Cited by 19 publications

References 26 publications

Peru upwelling region sediments near 15°S. 2. Dissolved free and total hydrolyzable amino acids1

Peru upwelling region sediments near 15°S. 2. Dissolved free and total hydrolyzable amino acids1

The trace element geochemistry of marine biogenic particulate matter

Trace element geochemistry of marine biogenic particulate matter

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