<rahmann et al. 
Tengberg, A., Hovdenes, J., Andersson, H. J., Brocandel, O., Diaz, R., 
Tebert, D., et al. (2006). Evaluation of a lifetime-based optode to 
neasure oxygen in aquatic systems. Limnol. Oceanogr.-Meth. 4, 7-17 
doi: 10.4319/lom.2006.4.7 
"homsen, S., Kanzow, T., Krahmann, G., Greatbatch, R., Dengler, M., and Lavik, 
G. (2016). The formation of a subsurface anticyclonic eddy in the Peru- 
Chile Undercurrent and its impact on the near-coastal salinity, oxygen and 
nutrient distributions. J. Geophys. Res.: Oceans. 121, 476-501. doi: 10.1002/ 
2015JC010878 
“hurnherr, A. M., Visbeck, M., Firing, E., King, B. A., Hummon, J. M., Krahmann, 
G., et al. (2010). “A manual for acquiring lowered doppler current profiler data; 
in The GO-SHIP Repeat Hydrography Manual: A Collection of Expert Reports 
and Guidelines, eds C. L. Sabine and B. M. Sloyan (Lyon: ICPO). 
Uchida, H., Johnson, G. C., and McTaggart, K. E. (2010). “CTD oxygen sensor 
calibration procedures” in The GO-SHIP Repeat Hydrography Manual: A 
Collection of Expert Reports and Guidelines, eds E. M. Hood, C. L. Sabine, and 
B. M. Sloyan (Lyon: ICPO). 
Ullman, D. S., and Hebert, D. (2014). Processing of underway CTD 
data. J. Atmosp. Ocean. Tech. 31, 984-998. doi: 10.1175/JTECH-D-13- 
00200.1 
van de Flierdt, T., Pahnke, K., Amakawa, H., Andersson, P., Basak, C., Coles, 
B., et al. (2012). GEOTRACES intercalibration of neodymium isotopes and 
‘are earth element concentrations in seawater and suspended particles. Part 
: reproducibility of results for the international intercomparison. Limnol. 
Oceanogr.-Meth. 10, 234-251. doi: 10.4319/lom.2012.10.234 
Woehle, C., Roy, A.-S., Glock, N., Wein, T., Weissenbach, J., Rosenstiel, P., et al. 
(2018). A novel eukaryotic denitrification pathway in foraminifera. Curr. Biol. 
28, 2536-2543. doi: 10.1016/j.cub.2018.06.027 
Wuttig, K., Heller, M. I., and Croot, P. L. (2013). Pathways of superoxide (O2- 
) decay in the Eastern Tropical North Atlantic. Environ. Sci. Technol. 47, 
10249-10256. doi: 10.1021/es401658t 
:rontiers in Marine Science | www.frontiersin.orc 
SFB754 Data Legacy 
Xie, R. C., Rehkämper, M., Grasse, P., van de Flierdt, T., Frank, M., and Xue, 
Z. (2019). Isotopic evidence for complex biogeochemical cycling of Cd in the 
eastern tropical South Pacific. Earth Planet. Sci. Lett. 512, 134-146. doi: 10.1016/ 
j-epsl.2019.02.001 
Zellweger, C., Steinbrecher, R., Laurent, O., Lee, H., Kim, S., Emmenegger, L., et al. 
‘2019). Recent advances in measurement techniques for atmospheric carbon 
monoxide and nitrous oxide observations. Atmos. Meas. Tech. 12, 5863-5878. 
doi: 10.5194/amt-12-5863-2019 
/solnay, A., Baiger, E., Jimenez, E., Steinweg, B., and Saccomandi, F. (1999). 
Differentiating with fluorescence spectroscopy the source of dissolved organic 
matter in soils subjected to drying. Chemosphere 38, 45-50. doi: 10.1016/S0045 
5535(98)00166-0 
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Zeptember 2021 | Volume 8 | Article 723A0-