Articles | Volume 19, issue 3
Research article
10 Feb 2022
Research article |  | 10 Feb 2022

What can we learn from amino acids about oceanic organic matter cycling and degradation?

Birgit Gaye, Niko Lahajnar, Natalie Harms, Sophie Anna Luise Paul, Tim Rixen, and Kay-Christian Emeis

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Cited articles

Abramson, L., Lee, C., Liu, Z., Wakeham, S. G., and Szlosek, J.: Exchange between suspended and sinking particles in the northwest Mediterranean as inferred from the organic composition of in situ pump and sediment trap samples, Limnol. Oceanogr., 55, 725–739, 2011. 
Alldredge, A.: The carbon, nitrogen and mass content of marine snow as a function of aggregate size, Deep-Sea Res. Pt. I, 45, 529–541, 1998. 
Alldredge, A. L. and Silver, M. W.: Charateristics, dynamics and significance of marine snow, Prog. Oceanogr., 20, 41–82, 1988. 
Altabet, M. A.: Isotopic Tracers of the Marine Nitrogen Cycle: Present and Past, in: Marine Organic Matter: Biomarkers, Isotopes and DNA, The Handbook of Environmental Chemistry, edited by: Volkman, J. K., Springer, Berlin, Heidelberg, 251–293,, 2006. 
Altabet, M. A., Deuser, W. G., Honjo, S., and Stienen, C.: Seasonal and depth-related changes in the source of sinking particles in the North Atlantic, Nature, 354, 136–139, 1991. 
Short summary
Amino acids were analyzed in a large number of samples of particulate and dissolved organic matter from coastal regions and the open ocean. A statistical analysis produced two new biogeochemical indicators. An indicator of sinking particle and sediment degradation (SDI) traces the degradation of organic matter from the surface waters into the sediments. A second indicator shows the residence time of suspended matter in the ocean (RTI).
Final-revised paper