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  • Data  (2)
  • 6,9,12,15-Hexadecatetraenoic acid of total fatty acids; ACS; all-cis-4,7,10,13,16,19-Docosahexaenoic acid of total fatty acids; all-cis-5,8,11,14,17-Eicosapentaenoic acid of total fatty acids; all-cis-5,8,11,14-Eicosatetraenoic acid of total fatty acids; all-cis-8,11,14-Octadecatrienoic acid of total fatty acids; all-cis-9,12-Octadecadienoic acid of total fatty acids; cis-11-Docosenoic acid of total fatty acids; cis-11-Icosenoic acid of total fatty acids; cis-11-Octadecenoic acid of total fatty acids (IUPAC: Octadec-11-enoic acid); cis-11-Octadecenol of total fatty alcohols; cis-15-Tetracosenoic acid of total fatty acids; cis-9-Hexadecenoic acid of total fatty acids (IUPAC: (9Z)-hexadec-9-enoic acid); cis-9-Hexadecenol of total fatty alcohols; cis-9-Octadecenoic acid of total fatty acids (IUPAC: Octadec-9-enoic acid); cis-9-Octadecenol of total fatty alcohols; Coastal Upwelling System in a Changing Ocean; CUSCO; CUSCO-1; Date/Time of event; Depth, bottom/max; Depth, top/min; Docosenol of total fatty alcohols; Eicosenol of total fatty alcohols; Event label; Gas chromatography; Hexadecanoic acid of total fatty acids; Hexadecanol of total fatty alcohols; IKMT; Individual dry mass; Isaac-Kid-Midwater Trawl; Latitude of event; Life stage; Lipids; Longitude of event; Maria S. Merian; Microstructure Profiler; MSM80; MSM80_102-4; MSM80_13-4; MSM80_15-5; MSM80_1-6; MSM80_16-4; MSM80_18-4; MSM80_18-7; MSM80_1-9; MSM80_20-4; MSM80_30-4; MSM80_31-4; MSM80_31-7; MSM80_34-4; MSM80_40-5; MSM80_4-6; MSM80_46-15; MSM80_46-20; MSM80_46-23; MSM80_49-6; MSM80_56-5; MSM80_58-4; MSM80_67-4; MSM80_68-5; MSM80_68-6; MSM80_7-4; MSM80_74-4; MSM80_7-8; MSM80_85-3; MSM80_94-5; MSM80_95-4; MSN; MSSP; Multiple opening/closing net; Octadecanoic acid of total fatty acids; Octadecanol of total fatty alcohols; Optical Profiler, ACS; Order; Phytanic acid of total fatty acids; Sample ID; Species; Station label; Tetradecanoic acid of total fatty acids; Tetradecanol of total alcohols; Wax esters  (1)
  • ACS; Carbon, total; Carbon/Nitrogen ratio; Coastal Upwelling System in a Changing Ocean; CUSCO; CUSCO-1; Date/Time of event; Depth, bottom/max; Depth, top/min; Event label; IKMT; Isaac-Kid-Midwater Trawl; Latitude of event; Life stage; Lipid corrected; Longitude of event; Maria S. Merian; Microstructure Profiler; MOC1; MOCNESS opening/closing plankton net 1 sqm; MSM80; MSM80_102-4; MSM80_102-5; MSM80_104-6; MSM80_13-4; MSM80_15-5; MSM80_15-6; MSM80_1-6; MSM80_16-4; MSM80_1-7; MSM80_18-4; MSM80_18-6; MSM80_18-7; MSM80_20-4; MSM80_25-4; MSM80_28-4; MSM80_30-4; MSM80_31-4; MSM80_31-7; MSM80_34-4; MSM80_36-4; MSM80_36-5; MSM80_38-5; MSM80_40-5; MSM80_43-5; MSM80_4-6; MSM80_46-15; MSM80_46-20; MSM80_46-23; MSM80_49-6; MSM80_51-5; MSM80_56-5; MSM80_66-4; MSM80_68-5; MSM80_68-6; MSM80_7-4; MSM80_74-4; MSM80_7-8; MSM80_80-11; MSM80_80-17; MSM80_80-6; MSM80_85-3; MSM80_94-5; MSM80_96-4; MSM80_99-5; MSM80_99-6; MSN; MSSP; Multiple opening/closing net; Nitrogen, total; Optical Profiler, ACS; Order; Sample ID; Species; Station label; δ13C/12C ratio; δ15N/14N ratio  (1)
Document type
  • Data  (2)
Source
Keywords
Publisher
Years
  • 1
    facet.materialart.
    Unknown
    Stable isotope composition of zooplankton, fishes and sea birds from the northern Humboldt Current System during Maria S. Merian cruise MSM80 (2022)
    PANGAEA
    Details
    Publication Date: 2024-03-09
    Description: Stable isotopes of carbon and nitrogen (δ13C, δ15N) were analyzed using a mass spectrometer with IAEA-VPDB (IAEA-C1) and atmospheric air (IAEA-N1) as standards, respectively. Two different approaches were used to determine a δ15N baseline for the food web of the northern Humboldt Current System. i) Particulate organic matter (POM) samples representing trophic position 1 and ii) Filter-feeding salps (Iasis cylindrica) as primary consumers representing trophic position 2. In general, low isotope ratios at the surface occurred in Thaliacea (I. cylindrica and Pyrosoma sp.). δ15N values of copepods inhabiting waters 〈50 m depth ranged from 3.9 ± 0.2‰ in Nannocalanus minor to 6.7 ± 0.6‰ in Calanus chilensis. Deeper-living copepods (〉200 m depth) within the oxygen minimum zone had about 4 to 8‰ higher δ15N values (~11-15‰) than surface living ones. For the diel vertical migrating euphausiids, mean δ15N and δ13C' values were in a similar range as for copepods from the upper water layers. The squat lobster Pleuroncodes monodon had extraordinarily high δ13C'. Among the key fish species, the eastern Pacific bonito Sarda chilensis had a slightly higher δ15N value compared to the anchovy Engraulis ringens. In some species a strong increase of the δ15N ratio of up to ~5‰ was determined from North (8.5°S) to South (16°S). These pronounced differences in d15N values highlight the importance of adequate baseline values to avoid misinterpretations of a species' regional feeding behaviour. In order to compensate for the reginal shift, using a filter-feeding salp as reference for herbivorous consumers seemed advantageous. In fact, calculated trophic positions for C. chilensis and other species did not differ between regions, when shifts in the baseline were taken into account.
    Keywords: ACS; Carbon, total; Carbon/Nitrogen ratio; Coastal Upwelling System in a Changing Ocean; CUSCO; CUSCO-1; Date/Time of event; Depth, bottom/max; Depth, top/min; Event label; IKMT; Isaac-Kid-Midwater Trawl; Latitude of event; Life stage; Lipid corrected; Longitude of event; Maria S. Merian; Microstructure Profiler; MOC1; MOCNESS opening/closing plankton net 1 sqm; MSM80; MSM80_102-4; MSM80_102-5; MSM80_104-6; MSM80_13-4; MSM80_15-5; MSM80_15-6; MSM80_1-6; MSM80_16-4; MSM80_1-7; MSM80_18-4; MSM80_18-6; MSM80_18-7; MSM80_20-4; MSM80_25-4; MSM80_28-4; MSM80_30-4; MSM80_31-4; MSM80_31-7; MSM80_34-4; MSM80_36-4; MSM80_36-5; MSM80_38-5; MSM80_40-5; MSM80_43-5; MSM80_4-6; MSM80_46-15; MSM80_46-20; MSM80_46-23; MSM80_49-6; MSM80_51-5; MSM80_56-5; MSM80_66-4; MSM80_68-5; MSM80_68-6; MSM80_7-4; MSM80_74-4; MSM80_7-8; MSM80_80-11; MSM80_80-17; MSM80_80-6; MSM80_85-3; MSM80_94-5; MSM80_96-4; MSM80_99-5; MSM80_99-6; MSN; MSSP; Multiple opening/closing net; Nitrogen, total; Optical Profiler, ACS; Order; Sample ID; Species; Station label; δ13C/12C ratio; δ15N/14N ratio
    Type: Dataset
    Format: text/tab-separated-values, 5448 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
    facet.materialart.
    Unknown
    Fatty acid composition of zooplankton, fishes and sea birds from the northern Humboldt Current System during Maria S. Merian cruise MSM80 (2022)
    PANGAEA
    Details
    Publication Date: 2024-04-24
    Description: Fatty acids were analyzed by gas chromatography using a DB-FFAP column of 30 m length and 0.25 mm inner diameter and a programmable temperature vaporizer injector. Following the trophic biomarker concept, the fatty acids 16:0, 20:5(n-3) and 22:6(n-3) were classified as typical components of biomembranes. High levels of 16:1(n−7) as well as 16:4(n−1) and 18:1(n−7) were used as diatom markers and 18:4(n−3) as fatty acid marker for dinoflagellates. The fatty acid 18:1(n-9) indicates carnivorous feeding. A carnivory index was applied based on the fatty acid ratio 18:1(n−9) / [16:1(n−7) + 16:4(n−1) + 18:1(n−7) + 18:4(n−3) + 18:1(n−9)] to reflect the proportion of carnivorous compared to herbivorous feeding in an organism. Fatty acid compositions of zooplankton and fish were taxon-specific and did not depend on sampling area or depth. Most species showed a dominance of typical membrane fatty acids, e.g., 16:0, 20:5(n-3) and 22:6(n-3). The dominant copepod Calanus chilensis had a low carnivory index and elevated amounts of diatom fatty acid markers which point to a predominantly herbivorous feeding. Among the krill species, Euphausia mucronata had the lowest carnivory index compared to the other euphausiids indicating a more herbivorous feeding. The squat lobster Pleuroncodes monodon had a significantly lower carnivory ratio compared to the deep-sea decapods Gennadas sp. and Acanthephyra sp. emphasizing its different trophic role compared to other decapods.
    Keywords: 6,9,12,15-Hexadecatetraenoic acid of total fatty acids; ACS; all-cis-4,7,10,13,16,19-Docosahexaenoic acid of total fatty acids; all-cis-5,8,11,14,17-Eicosapentaenoic acid of total fatty acids; all-cis-5,8,11,14-Eicosatetraenoic acid of total fatty acids; all-cis-8,11,14-Octadecatrienoic acid of total fatty acids; all-cis-9,12-Octadecadienoic acid of total fatty acids; cis-11-Docosenoic acid of total fatty acids; cis-11-Icosenoic acid of total fatty acids; cis-11-Octadecenoic acid of total fatty acids (IUPAC: Octadec-11-enoic acid); cis-11-Octadecenol of total fatty alcohols; cis-15-Tetracosenoic acid of total fatty acids; cis-9-Hexadecenoic acid of total fatty acids (IUPAC: (9Z)-hexadec-9-enoic acid); cis-9-Hexadecenol of total fatty alcohols; cis-9-Octadecenoic acid of total fatty acids (IUPAC: Octadec-9-enoic acid); cis-9-Octadecenol of total fatty alcohols; Coastal Upwelling System in a Changing Ocean; CUSCO; CUSCO-1; Date/Time of event; Depth, bottom/max; Depth, top/min; Docosenol of total fatty alcohols; Eicosenol of total fatty alcohols; Event label; Gas chromatography; Hexadecanoic acid of total fatty acids; Hexadecanol of total fatty alcohols; IKMT; Individual dry mass; Isaac-Kid-Midwater Trawl; Latitude of event; Life stage; Lipids; Longitude of event; Maria S. Merian; Microstructure Profiler; MSM80; MSM80_102-4; MSM80_13-4; MSM80_15-5; MSM80_1-6; MSM80_16-4; MSM80_18-4; MSM80_18-7; MSM80_1-9; MSM80_20-4; MSM80_30-4; MSM80_31-4; MSM80_31-7; MSM80_34-4; MSM80_40-5; MSM80_4-6; MSM80_46-15; MSM80_46-20; MSM80_46-23; MSM80_49-6; MSM80_56-5; MSM80_58-4; MSM80_67-4; MSM80_68-5; MSM80_68-6; MSM80_7-4; MSM80_74-4; MSM80_7-8; MSM80_85-3; MSM80_94-5; MSM80_95-4; MSN; MSSP; Multiple opening/closing net; Octadecanoic acid of total fatty acids; Octadecanol of total fatty alcohols; Optical Profiler, ACS; Order; Phytanic acid of total fatty acids; Sample ID; Species; Station label; Tetradecanoic acid of total fatty acids; Tetradecanol of total alcohols; Wax esters
    Type: Dataset
    Format: text/tab-separated-values, 4235 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
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