/* DATA DESCRIPTION:
Citation:	Becker, Kevin W; Devresse, Quentin; Prieto-Mollar, Xavier; Hinrichs, Kai-Uwe; Engel, Anja (2025): Lipidomics analysis from water bottle samples in and around a cyclonic eddy during METEOR cruise M156, off Mauritania [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.974978
Abstract:	This dataset includes lipidomics data over the surface mixed layer (0-35 m depth) of eleven stations with five of them inside or in the vicinity of a mesoscale cyclonic eddy that formed off Mauritania along a 900 km zonal corridor between Mauritania and the Cabo Verde islands in the eastern Tropical North Atlantic during the M156 cruise on the RV Meteor from July 3rd to August 1st 2019. Lipid samples were collected onto 0.22 µm Durapore filters (Millipore) and immediately flash-frozen and stored at −80 °C until processing. Extraction was performed using a modified Bligh and Dyer (Bligh and Dyer, 1959; https://doi.org/10.1139/o59-099) method described in Popendorf et al. (2013; https://doi.org/10.1007/s11745-012-3748-0). Lipid extracts were analyzed by HPLC-ESI-MS/MS on a Bruker maXis Ultra-High Resolution quadrupole time-of-flight tandem mass spectrometer (Bruker Daltonik, Bremen, Germany) equipped with an ESI ion source operating in positive mode. The HPLC-ESI-MS method is described in Wörmer et al., 2013 (https://doi.org/10.1016/j.orggeochem.2013.03.004). Lipids were identified by retention time as well as accurate molecular mass and isotope pattern match of proposed sum formulas in full scan mode and MS/MS fragment spectra. Lipid identities are resolved only to the level of lipid species, i.e., the sum of the properties of the substituents at both the sn-1 and sn-2 positions. After identification, quantification of analytes was performed using a series of standard curves, followed by normalization to concentration of an internal standard.
Keyword(s):	Carbon cycle; Cyclonic eddies; lipidomics; Phytoplankton; upwelling systems
Supplement to:	Becker, Kevin W; Devresse, Quentin; Prieto-Mollar, Xavier; Hinrichs, Kai-Uwe; Engel, Anja (2025): Mixed-layer lipidomes suggest offshore transport of energy-rich and essential lipids by cyclonic eddies. Communications Earth & Environment, 6(1), 179, https://doi.org/10.1038/s43247-025-02152-0
Project(s):	Role of Eddies for the Carbon Pump in Coastal upwelling Areas (REEBUS) (URI: https://www.geomar.de/forschen/aktuelle-projekte/detailansicht/prj/349891)
Coverage:	MEDIAN LATITUDE: 18.784912 * MEDIAN LONGITUDE: -20.198741 * SOUTH-BOUND LATITUDE: 17.999500 * WEST-BOUND LONGITUDE: -24.333800 * NORTH-BOUND LATITUDE: 21.167000 * EAST-BOUND LONGITUDE: -16.516300
	DATE/TIME START: 2019-07-04T07:58:00 * DATE/TIME END: 2020-07-27T06:00:00
License:	Creative Commons Attribution 4.0 International (CC-BY-4.0) (URI: https://creativecommons.org/licenses/by/4.0/)
Status:	Curation Level: Enhanced curation (URI: https://wiki.pangaea.de/wiki/Curation_levels)
Size:	11 datasets
*/
/* TABULAR SUMMARY OF DATASETS LISTED IN THIS COLLECTION: */
Filename	Citation of child dataset
M156_1_MGDG.tab	Becker, Kevin W; Devresse, Quentin; Prieto-Mollar, Xavier; Hinrichs, Kai-Uwe; Engel, Anja (2025): Lipidomics analysis (MGDG) from water bottle samples in and around a cyclonic eddy during METEOR cruise M156, off Mauritania. https://doi.org/10.1594/PANGAEA.974976
M156_2_DGDG.tab	Becker, Kevin W; Devresse, Quentin; Prieto-Mollar, Xavier; Hinrichs, Kai-Uwe; Engel, Anja (2025): Lipidomics analysis (DGDG) from water bottle samples in and around a cyclonic eddy during METEOR cruise M156, off Mauritania. https://doi.org/10.1594/PANGAEA.974979
M156_3_SQDG.tab	Becker, Kevin W; Devresse, Quentin; Prieto-Mollar, Xavier; Hinrichs, Kai-Uwe; Engel, Anja (2025): Lipidomics analysis (SQDG) from water bottle samples in and around a cyclonic eddy during METEOR cruise M156, off Mauritania. https://doi.org/10.1594/PANGAEA.974982
M156_4_DGTS.tab	Becker, Kevin W; Devresse, Quentin; Prieto-Mollar, Xavier; Hinrichs, Kai-Uwe; Engel, Anja (2025): Lipidomics analysis (DGTS) from water bottle samples in and around a cyclonic eddy during METEOR cruise M156, off Mauritania. https://doi.org/10.1594/PANGAEA.974983
M156_5_DGTA.tab	Becker, Kevin W; Devresse, Quentin; Prieto-Mollar, Xavier; Hinrichs, Kai-Uwe; Engel, Anja (2025): Lipidomics analysis (DGTA) from water bottle samples in and around a cyclonic eddy during METEOR cruise M156, off Mauritania. https://doi.org/10.1594/PANGAEA.974984
M156_6_DGCC.tab	Becker, Kevin W; Devresse, Quentin; Prieto-Mollar, Xavier; Hinrichs, Kai-Uwe; Engel, Anja (2025): Lipidomics analysis (DGCC) from water bottle samples in and around a cyclonic eddy during METEOR cruise M156, off Mauritania. https://doi.org/10.1594/PANGAEA.974985
M156_7_PG.tab	Becker, Kevin W; Devresse, Quentin; Prieto-Mollar, Xavier; Hinrichs, Kai-Uwe; Engel, Anja (2025): Lipidomics analysis (PG) from water bottle samples in and around a cyclonic eddy during METEOR cruise M156, off Mauritania. https://doi.org/10.1594/PANGAEA.974986
M156_8_PC.tab	Becker, Kevin W; Devresse, Quentin; Prieto-Mollar, Xavier; Hinrichs, Kai-Uwe; Engel, Anja (2025): Lipidomics analysis (PC) from water bottle samples in and around a cyclonic eddy during METEOR cruise M156, off Mauritania. https://doi.org/10.1594/PANGAEA.974987
M156_9_PE.tab	Becker, Kevin W; Devresse, Quentin; Prieto-Mollar, Xavier; Hinrichs, Kai-Uwe; Engel, Anja (2025): Lipidomics analysis (PE) from water bottle samples in and around a cyclonic eddy during METEOR cruise M156, off Mauritania. https://doi.org/10.1594/PANGAEA.974988
M156_10_UQ.tab	Becker, Kevin W; Devresse, Quentin; Prieto-Mollar, Xavier; Hinrichs, Kai-Uwe; Engel, Anja (2025): Lipidomics analysis (UQ) from water bottle samples in and around a cyclonic eddy during METEOR cruise M156, off Mauritania. https://doi.org/10.1594/PANGAEA.975018
M156_11_TAG.tab	Becker, Kevin W; Devresse, Quentin; Prieto-Mollar, Xavier; Hinrichs, Kai-Uwe; Engel, Anja (2025): Lipidomics analysis (TAG) from water bottle samples in and around a cyclonic eddy during METEOR cruise M156, off Mauritania. https://doi.org/10.1594/PANGAEA.975019
