Description: This large set of suspended matter (SPM) samples was collected in different oceanic areas between 1999 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) and total carbon (C) 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 Thermo Finnigan MAT 252. AA and HA contents and their individual monomers were analysed by liquid chromatography using a Biochrom 30 amino acid analyzer. Contents of AA and HA are presented in nmol/g and µg/g. AAC, AAN, HAC, HAN are presented in µg/g and as percentages of TOC (AAC/C, HAC/C) or TN (AAN/N, HAN/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 (Gluam) and galactosamine (Galam). 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).
Global identifier:
Doi(
"10.1594/PANGAEA.940723",
)
DataMeasurements(
DataMeasurements {
domain: Unspecified,
station: None,
measured_variables: [
"Alanine",
"Amino acid nitrogen of total nitrogen",
"Amino acid, carbon",
"Amino acid, carbon of total organic carbon",
"Amino acid, nitrogen",
"Amino acids",
"Amino acids non-protein",
"Amino acids/hexosamines ratio",
"Amino sugar, carbon",
"Amino sugar, carbon of total organic carbon",
"Amino sugar, nitrogen",
"Amino sugar, nitrogen of total nitrogen",
"Arginine",
"Aspartic acid",
"Aspartic acid/beta-Alanine ratio",
"Campaign of event",
"Carbon, organic, total",
"Carbon, total",
"Cysteic acid",
"DEPTH, water",
"Date/Time of event",
"Degradation index",
"Elevation of event",
"Event label",
"Galactosamine",
"Glucosamine",
"Glucosamine/Galactosamine ratio",
"Glutamic acid",
"Glutamic acid/gamma-Aminobutyric acid ratio",
"Glycine",
"Hexosamines",
"Histidine",
"Isoleucine",
"Latitude of event",
"Leucine",
"Location",
"Longitude of event",
"Lysine",
"Methionine",
"Methionine sulfoximine",
"Nitrogen, total",
"Ornithine",
"Ox/Anox ratio",
"Phenylalanine",
"Reactivity index of amino acids (Jennerjahn & Ittekkot, 1997)",
"Residence time index",
"Sample ID",
"Sediment degradation index",
"Serine",
"Suspended particulate matter",
"Taurine",
"Threonine",
"Tryptophan",
"Tyrosine",
"Valine",
"beta-Alanine",
"gamma-Aminobutyric acid",
"δ15N, total particulate nitrogen",
],
methods: [
"Amino acid analyser, Biochrom 30",
"Calculated after Dauwe et al. 1999",
"Calculated after Gaye et al. (2022)",
"Calculated after Jennerjahn and Ittekkot (1997)",
"Gas chromatography with Carlo Erba NA-1500 CNS elemental analyzer",
"Gas chromatography with Carlo Erba NA1500 after treatment with HCL",
"Mass spectrometer, ThermoFisher Scientific MAT 252",
],
},
)
Tags: Tierhaltungsanlage ? Gesamter organischer Kohlenstoff ? Schwebstoff ? Stickstoff ? Geografische Koordinaten ? Gesamtkohlenstoff ? Gesamtstickstoff ? Tiefsee ? Messdaten ? Stichprobe ? Studie ? Wasserprobe ? Sediment ? Meeresgewässer ? amino acids ? degradation indicators ? hexosamines ? organic matter cycling ? organic matter degradation ?
Region: Namibia upwelling, Southeast Atlantic Kara Sea Indian Ocean Arabian Sea
Bounding boxes: 10.999° .. 85.763216666667° x -28.639333333333° .. 76.961783333333°
License: Creative Commons Namensnennung 4.0
Language: Englisch/English
Issued: 2022-02-07
Modified: 2024-04-22
Time ranges: 1999-08-24 - 2017-09-29
Accessed 1 times.