Mills, Christopher T; Dias, Robert F; Graham, Dennis; Mandernack, Kevin W (2006): Total phospholipid fatty acid concentrations structrures of ODP Hole 191-1179 samples (Table 1) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.757372, Supplement to: Mills, CT et al. (2006): Determination of phospholipid fatty acid structures and stable carbon isotope compositions of deep-sea sediments of the Northwest Pacific, ODP site 1179. Marine Chemistry, 98(2-4), 197-209, https://doi.org/10.1016/j.marchem.2005.10.001
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Abstract:
Sediment samples ranging from 0.05 to 278 m below sea floor (mbsf) at a Northwest Pacific deep-water (5564 mbsl) site (ODP Leg 191, Site 1179) were analyzed for phospholipid fatty acids (PLFAs). Total PLFA concentrations decreased by a factor of three over the first meter of sediment and then decreased at a slower rate to approximately 30 mbsf. The sharp decrease over the first meter corresponds to the depth of nitrate and Mn(IV) reduction as indicated by pore water chemistry. PLFA-based cell numbers at site 1179 had a similar depth profile as that for Acridine orange direct cell counts previously made on ODP site 1149 sediments which have a similar water depth and lithology. The mole percentage of straight chain saturated PLFAs increases with depth, with a large shift between the 0.95 and 3.95 mbsf samples. PLFA stable carbon isotope ratios were determined for sediments from 0.05 to 4.53 mbsf and showed a general trend toward more depleted d13C values with depth. Both of these observations may indicate a shift in the bacterial community with depth across the different redox zones inferred from pore water chemistry data. The PLFA 10me16:0, which has been attributed to the bacterial genera Desulfobacter in many marine sediments, showed the greatest isotopic depletion, decreasing from -20 to -35 per mil over the first meter of sediment. Pore water chemistry suggested that sulfate reduction was absent or minimal over this same sediment interval. However, 10me16:0 has been shown to be produced by recently discovered anaerobic ammonium oxidizing (anammox) bacteria which are known chemoautotrophs. The increasing depletion in d13C of 10me16:0 with the unusually lower concentration of ammonium and linear decrease of nitrate concentration is consistent with a scenario of anammox bacteria mediating the oxidation of ammonium via nitrite, an intermediate of nitrate reduction.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Latitude: 41.079817 * Longitude: 159.963150
Date/Time Start: 2000-07-25T00:00:00 * Date/Time End: 2000-07-25T00:00:00
Minimum DEPTH, sediment/rock: 0.05 m * Maximum DEPTH, sediment/rock: 6.45 m
Event(s):
191-1179 * Latitude: 41.079817 * Longitude: 159.963150 * Date/Time: 2000-07-25T00:00:00 * Elevation: -5565.0 m * Penetration: 1232 m * Recovery: 363.2 m * Location: North Pacific Ocean * Campaign: Leg191 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 56 cores; 509 m cored; 723 m drilled; 71.4% recovery
Parameter(s):
# | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
---|---|---|---|---|---|---|
1 | DEPTH, sediment/rock | Depth sed | m | Mills, Christopher T | Geocode | |
2 | Phospholipid fatty acids | PLFA | nmol/g | Mills, Christopher T | ||
3 | Cells | Cells | 106 #/cm3 | Mills, Christopher T | ||
4 | Tetradecanoic acid of total fatty acids | 14:0 | % | Mills, Christopher T | ||
5 | 10-methyl-Tetradecanoic acid of total fatty acids | 10me14:0 | % | Mills, Christopher T | Identified by mass spectrum and expected retention time, no comparison to authentic standard | |
6 | iso-Pentadecanoic acid of total fatty acids (IUPAC: 13-methyltetradecanoic acid) | i-15:0 (IUPAC: 13-Me-C14:0) | % | Mills, Christopher T | ||
7 | 12-methyl-Tetradecanoic acid of total fatty acids (IUPAC: 12-methyltetradecanoic acid) | ai-15:0 (IUPAC: 12-Me-C14:0) | % | Mills, Christopher T | ||
8 | Pentadecanoic acid of total fatty acids | 15:0 | % | Mills, Christopher T | ||
9 | 10-methyl-Pentadecanoic acid of total fatty acids | 10me15:0 | % | Mills, Christopher T | Identified by mass spectrum and expected retention time, no comparison to authentic standard | |
10 | iso-Hexadecanoic acid of total fatty acids (IUPAC: 14-methylpentadecanoic acid) | i-16:0 (IUPAC: 14-Me-C15:0) | % | Mills, Christopher T | ||
11 | Hexadecanoic acid of total fatty acids | 16:0 | % | Mills, Christopher T | ||
12 | 10-methyl-Hexadecanoic acid of total fatty acids (IUPAC: 10-methylhexadecanoic acid) | 10me16:0 (IUPAC: 10-Me-C16:0) | % | Mills, Christopher T | ||
13 | cis-9-Hexadecenoic acid of total fatty acids (IUPAC: (9Z)-hexadec-9-enoic acid) | 16:1(n-7) (IUPAC: C16:1w7c) | % | Mills, Christopher T | ||
14 | iso-Heptadecanoic acid of total fatty acids (IUPAC: 15-methylhexadecanoic acid) | i-17:0 (IUPAC: 15-Me-C16:0) | % | Mills, Christopher T | Identified by mass spectrum and expected retention time, no comparison to authentic standard | |
15 | 14-methyl-Hexadecanoic acid of total fatty acids (IUPAC: 14-methylhexadecanoic acid) | ai-17:0 (IUPAC: 14-Me-C16:0) | % | Mills, Christopher T | Identified by mass spectrum and expected retention time, no comparison to authentic standard | |
16 | Heptadecanoic acid of total fatty acids | 17:0 | % | Mills, Christopher T | ||
17 | iso-Octadecanoic acid of total fatty acids | i-18:0 | % | Mills, Christopher T | Identified by mass spectrum and expected retention time, no comparison to authentic standard | |
18 | Cyclopropane fatty acid of total fatty acids (IUPAC: Methylenehexadecanoic acid) | cy17:0 (IUPAC: cy-C17:0) | % | Mills, Christopher T | ||
19 | Heptadecenoic acid/15-methyl-heptadecanoic acid ratio | 17:1/ai18:0 | % | Mills, Christopher T | Identified by mass spectrum and expected retention time, no comparison to authentic standard. Co-eluting peaks. | |
20 | Heptadecenoic acid of total fatty acids | 17:1 | % | Mills, Christopher T | ||
21 | Octadecanoic acid of total fatty acids | 18:0 | % | Mills, Christopher T | ||
22 | 11-methyloctadec-12-enoic acid of total fatty acids | br19:1 | % | Mills, Christopher T | Co-eluting peaks. Methyl branch positiomn not determined. | |
23 | Methylnonadecanoic acid of total fatty acids | br20:0 | % | Mills, Christopher T | #1. Identified by mass spectrum and expected retention time, no comparison to authentic standard. Methyl branch position not determined. | |
24 | Nonadecanoic acid of total fatty acids | 19:0 | % | Mills, Christopher T | ||
25 | 10-methyl-Octadecanoic acid of total fatty acids | 10me18:0 | % | Mills, Christopher T | ||
26 | Methylnonadecanoic acid of total fatty acids | br20:0 | % | Mills, Christopher T | #2. Identified by mass spectrum and expected retention time, no comparison to authentic standard. Methyl branch position not determined. | |
27 | Nonadecanoic acid of total fatty acids | 19:0 | % | Mills, Christopher T | ||
28 | cyclo-Nonadecanoic acid of total fatty acids (IUPAC: Methyleneoctadecanoic acid) | cy19:0 (IUPAC: cy-C19:0) | % | Mills, Christopher T | ||
29 | Icosanoic acid of total fatty acids | 20:0 | % | Mills, Christopher T | ||
30 | Methyleicosanoic acid of total fatty acids | br21:0 | % | Mills, Christopher T | Identified by mass spectrum and expected retention time, no comparison to authentic standard. Methyl branch position not determined. | |
31 | Heneicosanoic acid of total fatty acids | 21:0 | % | Mills, Christopher T | ||
32 | Docosanoic acid of total fatty acids | 22:0 | % | Mills, Christopher T | ||
33 | Tricosanoic acid of total fatty acids | 23:0 | % | Mills, Christopher T | ||
34 | Tetracosanoic acid of total fatty acids | 24:0 | % | Mills, Christopher T | ||
35 | Hexacosanoic acid of total fatty acids | 26:0 | % | Mills, Christopher T | ||
36 | Saturated fatty acids of total fatty acids | SFA | % | Mills, Christopher T | ||
37 | Total branched fatty acids of total fatty acids | br FA | % | Mills, Christopher T | ||
38 | Unsaturated fatty acids/cyclic fatty acids ratio | UFA/cyclicFA | Mills, Christopher T |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
370 data points