Amino acids and hexosamine in sediment trap samples from different oceanic areas collected between 1993 and 2017 from shelf seas to the deep ocean

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

Amino acids and hexosamine in sediment trap samples from different oceanic areas collected between 1993 and 2017 from shelf seas to the deep ocean

2022

This large set of sediment trap samples was collected in different oceanic areas between 1993 and 2017 from shelf seas to the deep ocean. The samples were compiled from previous studies and used for statistical analyses in order to better understand particle dynamics and organic matter cycling in the ocean and to test and refine amino acid (AA) and hexosamine (HA) based biogeochemical indicators. Samples were analysed for total nitrogen (N) using a Carlo Erba nitrogen analyser 1500. Total organic carbon (TOC) was measured with the same instrument after treatment of weighed samples with 1N HCl to remove carbonate. Stable nitrogen isotopes of total particulate nitrogen (δ15N-TPN) were analysed with the mass spectrometer ThermoFisher Scientific MAT 252. AA and HA contents and their individual monomers were analysed by liquid chromatography using a Biochrom 30 amino acid analyzer. Total fluxes, TOC and AA fluxes were calculated in mg m-2 d-1. Contents of AA and HA are presented in µmol/g and µg/g. AAC, AAN, HAC, HAN are presented in µg/g and as percentages of TOC (AA-C/C, HA-C/C) or TN (AA-N/N, HA-N/N). AA and HA monomers are presented in Mol% and comprise aspartic acid (ASP), glutamic acid (Glu), threonine (Thr), serine (Ser), glycine (Gly), alanine (Ala), valine (Val), methionine (Met), isoleucine (Ile), leucine (Leu), tyrosine (Tyr), phenylalanine (Phe), β-Alanine (β-Ala), γ-aminobutyric acid (γ-Aba), histidine (His), ornithine (Orn), lysine (Lys) and arginine (Arg), glucosamine (GlcN) and galactosamine (GalN), cysteic acid (CYA), taurine (TAU), methionine sulfoximine (MSO) and tryptophane (TRP) were determined only in the more recent samples. Data gaps indicate that measurements were not carried out or that they were not stored in the older data sets. The RI was calculated according to Jennerjahn and Ittekkot (1997; https://archimer.ifremer.fr/doc/00093/20403/) and the DI after Dauwe et al. (1999; doi:10.4319/lo.1999.44.7.1809). Definitions of biogeochemical indicators SDI, RTI, ox/anox and a detailed description of the methods can be found in Gaye et al. (2022; doi:org/10.5194/bg-19-807-2022).

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alanine amino acids arabian sea arginine aspartic acid carbon depth galactosamine gamma-aminobutyric acid glucosamine glutamic acid glycine hexosamines histidine indian ocean isoleucine kara sea leucine location lysine methionine moor nitrogen ornithine phenylalanine sediment serine taurine threonine traps tryptophan tyrosine valine water

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M44/1_7-mid; Deployment: bp99-01; Mooring; Maria s. merian; East; Gas chromatography with carlo erba na-1500 cns elemental analyzer; So259_recovery_03-01; Bp02; Eastern arabian sea trap station; Nast; Degradation indicators; Methionine sulfoximine; Mooring (long time); Deployment: m44/1_7st; Nitrogen of total nitrogen; North atlantic ocean; Sinking particles; Central arabian sea trap station; Index2016_trap_03-01; Calculated after gaye et al. (2022); Akademik boris petrov; Ept; Calculated after dauwe et al. 1999; Station label; East pakistan trap station; Aspartic acid/beta-alanine ratio; So259_recovery_01-01; Organic matter degradability; Msm17/3_222-m; Ox/anox ratio; Recovery: msm17/3_258-2; Deployment: bp02-04; Amino acid; Other event; Msm17/3; Wast; Off south java; Total mass; Organic; Bp99-15-yen01; Degradation index; Bp00-24a-yenisei_02; Mass spectrometer; Western arabian sea trap station; Amino acid nitrogen of total nitrogen; Wnat; Enat; Sample id; Residence time index; Cast; Recovery: bp03-04a; Total; South atlantic ocean; Reference of data; Trap; Glutamic acid/gamma-aminobutyric acid ratio; Msm59/2_deployment_03-01; Amino acids/hexosamines ratio; Sediment degradation index; Amino acids non-protein; Event label; Flux; Northeastern arabian sea trap station; Sast; Gas chromatography with carlo erba na1500 after treatment with hcl; Thermofisher scientific mat 252; Bp01; Moory; Wpt; Bp99-01-ob01; Msm17/3_223-d; Amino sugar; Deployment: bp00-24a; Carbon of total organic carbon; Neast; Glucosamine/galactosamine ratio; Recovery: bp02-01a; Bp02-04-yenisei_04; West pakistan trap station; Flux per day; Bp00; Recovery: msm17/3_222-4; Beta-alanine; Bp99; Date/time; Reference/source; Reactivity index of amino acids (jennerjahn & ittekkot; Index2016_trap_01-01; Cysteic acid; 1997); Deployment: bp01-61a; Jam-1; Bp01-61a-kara_02; Msm59/2_deployment_01-01; Amino acid analyser; Sediment trap samples; Calculated after jennerjahn and ittekkot (1997); Deployment: msm17/3_223-2; Southern arabian sea trap station; Recovery: bp01-02; Meteor (1986); Recovery: m44/4_st244; Δ15n; Biochrom 30; Northern arabian sea trap station; M44/1; Eastern basin

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Amino acids and hexosamine in sediment trap samples from different oceanic areas collected between 1993 and 2017 from shelf seas to the deep ocean

2022

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