Colloidal and dissolved organic matter in lake water: Carbohydrate and amino acid composition, and ability to support bacterial growth

1995 ◽  
Vol 30 (2) ◽  
Author(s):  
LarsJ. Tranvik ◽  
NielsO.G. J�rgensen
Keyword(s):  
Organic Matter ◽  
Amino Acid ◽  
Dissolved Organic Matter ◽  
Amino Acid Composition ◽  
Acid Composition ◽  
Bacterial Growth ◽  
Lake Water

Carbohydrate and amino acid composition of dissolved organic matter leached from soil

2007 ◽  
Vol 39 (11) ◽  
pp. 2926-2935 ◽  
Author(s):  
Holger Fischer ◽  
Axel Meyer ◽  
Klaus Fischer ◽  
Yakov Kuzyakov
Keyword(s):  
Organic Matter ◽  
Amino Acid ◽  
Dissolved Organic Matter ◽  
Amino Acid Composition ◽  
Acid Composition

Organic matter characteristics in a Mediterranean stream through amino acid composition: changes driven by intermittency

2011 ◽  
Vol 73 (4) ◽  
pp. 523-535 ◽  
Author(s):  
Irene Ylla ◽  
Isis Sanpera-Calbet ◽  
Isabel Muñoz ◽  
Anna M. Romaní ◽  
Sergi Sabater
Keyword(s):  
Organic Matter ◽  
Amino Acid ◽  
Amino Acid Composition ◽  
Acid Composition ◽  
Mediterranean Stream ◽  
Composition Changes

scholarly journals Amino acid composition and δ<sup>15</sup>N of suspended matter in the Arabian Sea

2013 ◽  
Vol 10 (8) ◽  
pp. 13317-13352
Author(s):  
B. Gaye ◽  
B. Nagel ◽  
K. Dähnke ◽  
T. Rixen ◽  
N. Lahajnar ◽  
...  
Keyword(s):  
Organic Matter ◽  
Amino Acid ◽  
Amino Acid Composition ◽  
Water Column ◽  
Acid Composition ◽  
Residence Time ◽  
Mixed Layer ◽  
Suspended Matter ◽  
Arabian Sea ◽  
Surface Mixed Layer

Abstract. Sedimentation in the ocean is fed by large aggregates produced in the surface mixed layer that sink rapidly through the water column. These particles sampled by sediment traps have often been proposed to interact by disaggregation and scavenging with a pool of fine suspended matter with very slow sinking velocities and thus a long residence time. We investigated the amino acid composition and stable nitrogen isotopic ratios of suspended matter sampled during the late SW monsoon season in the Arabian Sea and compared them to those of sinking particles to investigate organic matter degradation/modification during passage through the water column. We found that amino acid (AA) composition of mixed layer suspended matter corresponds more to fresh plankton and their aggregates, whereas AA composition of suspended matter in the sub-thermocline water column deviated progressively from mixed layer composition. We conclude that suspended matter in deep waters and in the mixed layers of oligotrophic stations is dominated by fine material that has a long residence time and organic matter that is resistant to degradation. Whereas SPM in areas of high primary productivity is essentially derived from fresh plankton and thus has a strong imprint of the subsurface nitrate source, SPM at oligotrophic stations and at subthermocline depths appears to exchange amino acids with the DOC pool influencing also the δ15N values.

Amino acid composition of soil organic matter

1998 ◽  
Vol 26 (3) ◽  
pp. 235-242 ◽  
Author(s):  
Z. N. Senwo ◽  
M. A. Tabatabai
Keyword(s):  
Organic Matter ◽  
Amino Acid ◽  
Soil Organic Matter ◽  
Amino Acid Composition ◽  
Acid Composition

Effect of maternal diet on the amino acid composition of human uterine fluid

2014 ◽  
Author(s):  
Alexandra Jayne Kermack ◽  
Ying Cheong ◽  
Nick Brook ◽  
Nick Macklon ◽  
Franchesca D Houghton
Keyword(s):  
Amino Acid ◽  
Amino Acid Composition ◽  
Acid Composition ◽  
Maternal Diet ◽  
Uterine Fluid
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