<rahmann et al. 
Foltz, G. R., Hummels, R., Dengler, M., Perez, R. C., and Araujo, M. (2020). Vertical) 
urbulent cooling of the mixed layer in the Atlantic ITCZ and trade wind 
regions. J. Geophys. Res. 125:e2019JC015529. doi: 10.1029/2019JC015529 
Franz, J., Krahmann, G., Lavik, G., Grasse, P., Dittmar, T., and Riebesell, U. 
{(2012a). Dynamics and stoichiometry of nutrients and phytoplankton in waters 
influenced by the oxygen minimum zone in the eastern tropical Pacific. Deep- 
Sea Res. Pt. 1, 62, 20-31. doi: 10.1016/j.dsr.2011.12.004 
Franz, J., Hauss, H., Sommer, U., Dittmar, T., and Riebesell, U. (2012b). Production, 
partitioning and stoichiometry of organic matter under variable nutrient supply 
during mesocosm experiments in the tropical Pacific and Atlantic Ocean. 
Biogeosciences 9, 4629-4643. doi: 10.5194/bgd-9-5755-2012 
Frey, C., Bange, H. W., Achterberg, E. P., Jayakumar, A., Löscher, C. R., Arevalo- 
Martinez, D. L., et al. (2020). Regulation of nitrous oxide production in 
ow-oxygen waters off the coast of Peru. Biogeosciences 17, 2263-2287. doi 
‚0.5194/bg-17-2263-2020 
Garcia, H. E., Weathers, K., Paver, C. R., Smolyar, I., Boyer, T. P., Locarnini, 
R. A., et al. (2018). World Ocean Atlas 2018: Dissolved Oxygen, Apparent 
Oxygen Utilization, and Oxygen Saturation. Washington, D.C: U.S. Government 
Printing Office. 
Sasol, J. M., and del Giorgio, P. A. (2000). Using flow cytometry 
“or counting natural planktonic bacteria and understanding the 
structure of planktonic bacterial communities. Sci. Mar. 64, 197-224 
doi: 10.3989/scimar.2000.64n2197 
Gier, J., Löscher, C. R., Dale, A. W., Sommer, S., Lomnitz, U., and Treude, T. (2017). 
Benthic dinitrogen fixation traversing the oxygen minimum zone off mauritania 
{NW Africa). Front. Mar. Sci. 4:390. doi: 10.3389/fmars.2017.00390 
Gier, J., Sommer, S., Löscher, C. R., Dale, A. W., Schmitz, R. A., and Treude, 
T. (2016). Nitrogen fixation in sediments along a depth transect through the 
Peruvian oxygen minimum zone. Biogeosciences 13, 4065-4080. doi: 10.5194/ 
bg-13-4065-2016 
Gledhill, M., and Van Den Berg, C. M. G. (1994). Determination of complexation 
of iron(I1I) with natural organic complexing ligands in seawater using cathodic 
stripping voltammetry. Mar. Chem. 47, 41-54. doi: 10.1016/0304-4203(94) 
90012-4 
Glock, N., and Mehrtens, H. (eds) (2021). Data from: SFB754 core-top Calibrations 
of Paleo-Proxies, PANGAEA. doi: 10.1594/PANGAEA.927049 
Glock, N., Romero, D., Roy, A. S., Woehle, C., Dale, A. W., Schönfeld, J., et al. 
(2020). A hidden sedimentary phosphate pool inside benthic foraminifera 
irom the Peruvian upwelling region might nucleate phosphogenesis. Geochim. 
Cosmochim. Acta 289, 14-32. doi: 10.1016/j.gca.2020.08.002 
Glock, N., Roy, A.-S., Weissenbach, J., Revsbech, N. P., et al. (2019). Metabolic 
reference of nitrate over oxygen as an electron acceptor in foraminifera 
“rom the Peruvian oxygen minimum zone. Proc. Natl. Acad. Sci. US A. 116, 
2860-2865. doi: 10.1073/pnas.1813887116 
Glock, N., Schönfeld, J., Eisenhauer, A., Hensen, C., Mallon, J., and Sommer, S. 
(2013). The role of benthic foraminifera in the benthic nitrogen cycle of the 
Peruvian oxygen minimum zone. Biogeosciences 10, 4767-4783. doi: 10.5194/ 
bg-10-4767-2013 
Gorsky, G., Ohman, M. D., Picheral, M., Gasparini, S., Stemmann, L., Romagnan, 
".-B., et al. (2010). Digital zooplankton image analysis using the ZooScan 
integrated system. J. Plankt. Res. 32, 285-303. doi: 10.1093/plankt/fbp 124 
Grasse, P., Bosse, L., Hathorne, E. C., Böning, P., Pahnke, K., and Frank, M. (2017). 
Short-term variability of dissolved rare earth elements and neodymium isotopes 
in the entire water column of the Panama Basin. Earth Planet. Sci. Lett. 475, 
242-253. doi: 10.1016/j.epsl.2017.07.022 
Grasse, P., Ehlert, C., and Frank, M. (2013). The influence of water mass mixing 
on the dissolved Si isotope composition in the Eastern Equatorial Pacific. Earth 
Planet. Sci. Lett. 380, 60-71. doi: 10.1016/j.epsl.2013.07.033 
Grasse, P., Hauss, H., and Mehrtens, H. (eds) (2021). Data from: SFB754 Stable 
and Radiogenic Isotope(measurements). Los Angeles, CA: World Data Center 
PANGAEA, doi: 10.1594/PANGAEA.926530 
Grasse, P., and Mehrtens, H. (eds) (2021). Data From: SFB754 Stable and 
Radiogenic Isotope Measurements. PANGAEA: World Data Center. doi: 10. 
L594/PANGAEA.926530 
Grasse, P., Ryabenko, E., Ehlert, C., Altabet, M. A., and Frank, M. (2016). Silicon 
and nitrogen cycling in the upwelling area off Peru: a dual isotope approach. 
Limnol. Oceanogr. 61, 1661-1676. doi: 10.1002/1no.10324 
Grasse, P., Stichel, T., Stumpf, R., Stramma, L., and Frank, M. (2012). The 
distribution of neodymium isotopes and concentrations in the Eastern 
-rontiers in Marine Science | www.frontiersin.orc 
SFB754 Data Legacy 
Equatorial Pacific: water mass advection versus particle exchange. Earth Planet. 
Sci. Lett. 353, 198-207. doi: 10.1016/j.epsl.2012.07.044 
Großkopf, T., Mohr, W., Baustian, T., Schunck, H., Gill, D., Kuypers, M. M. M., 
et al. (2012). Doubling of marine dinitrogen-fixation rates based on direct 
measurements. Nature 488, 361-364. doi: 10.1038/nature11338 
Hahn, J., Brandt, P., Greatbatch, R. J., Krahmann, G., and Körtzinger, A. (2014). 
Oxygen variance and meridional oxygen supply in the tropical North East 
Atlantic oxygen minimum zone. Climate Dynamics 43, 2999-3024. doi: 10. 
1007/s00382-014-2065-0 
Hahn, J., Krahmann, G., and Mehrtens, H. (eds) (2021). Data from: 
S$FB754(moorings) 2006-2018. World Data Center PANGAEA. doi: 
10.1594/PANGAEA.926545 
Hansen, H. P., and Koroleff, F. (1999). “Determination of nutrients;” in Methods of 
Seawater Analysis, ed. K. Grasshof (Hoboken, NJ: Wiley). 
Hathorne, E., Haley, B., Stichel, T., Grasse, P., Zieringer, M., and Frank, M. (2012). 
Online preconcentration ICP-MS analysis of rare earth elements in seawater. 
Geochem. Geophy. Geosy. 13, 1-12. doi: 10.1029/2011gc003907 
Hauss, H., Franz, J. M., and Sommer, U. (2012). Changes in N: pstoichiometry 
influence taxonomic composition and nutritional quality of phytoplankton in 
the Peruvian upwelling. J. Sea Res. 73, 74-85. doi: 10.1016/j.seares.2012.06.010 
Hauss, H., Kiko, R., and Mehrtens, H. (eds) (2021a). Data from: SFB754 
Multinet Zooplankton Distribution. World Data Center PANGABEA. doi: 10. 
1594/PANGAEA.926794 
Hauss, H., Kiko, R., Löscher, C. R., and Mehrtens, H. (eds) (2021b). Data from: 
S$FB754 Nutrient Amendment Experiments. World Data Center PANGAEA. 
doi: 10.1594/PANGAEA.927042 
Hegslund, S., Revsbech, N. P., Cedhagen, T., Nielsen, L. P., and Gallardo, V. A. 
(2008). Denitrification, nitrate turn over, and aerobic respiration by benthic 
foraminiferans in the oxygen minimum zone off Chile. J. Exp. Mar. Biol. Ecol 
359, 85-91. doi: 10.1016/j.jembe.2008.02.015 
‚Aolmes, R. M., Aminot, A., Kerouel, R., Hooker, B. A., and Peterson, B. J. 
1999). A simple and precise method for measuring ammo-nium in marine 
and freshwater ecosystems. Can. J. Fish. Aquat.Sci. 56, 1801-1808. doi: 10.1139/ 
cjfas- 56-10-1801 
Holtappels, M., Tiano, L., Kalvelage, T., Lavik, G., Revsbech, N. P., and Kuypers, 
M. M. M. (2014). Aquatic respiration rate measurements at low oxygen 
concentrations. PLoS One 9:e89369. doi: 10.1371/journal.pone.0089369 
Hoppe, H.-G. (1983). Significance of exoenzymatic activities in the ecology of 
brackish water: measurements by means of methylumbelliferyl-substrates. Mar. 
Ecol.-Prog. Ser. 11, 299-308. doi: 10.3354/meps011299 
Hu, H., Bourbonnais, A., Larkum, J., Bange, H. W., and Altabet, M. A. (2016). 
Nitrogen cycling in shallow low oxygen coastal waters off Peru from nitrite 
and nitrate nitrogen and oxygen isotopes. Biogeosciences 13, 1453-1468. doi: 
10.5194/bg-13-1453-2016 
Hydes, D. J., Aoyama, M., Aminot, A., Bakker, K., Becker, S., Coverly, S., et al. 
(2010). “The GO-SHIP repeat hydrography manual: a collection of expert 
reports and guidelines. version 1; in Recommendations for the Determination of 
Nutrients in Seawater to High Levels of Precision and Inter-Comparability using 
Continuous Flow Analysers, eds E. M. Hood, C. L. Sabine, and B. M. Sloyan 
<Lyon: ICPO). 
Kalvelage, T., Jensen, M. M., Contreras, S., Revsbech, N. P., Lam, P., Günter, M., 
at al. (2011). Oxygen sensitivity of anammox and coupled N-cycle processes 
in oxygen minimum zones. PLoS One 6:e29299. doi: 10.1371/iournal.pone. 
0029299 
Kalvelage, T., Lavik, G., Jensen, M. M., Revsbech, N. P., Löscher, C. R., Schunck, H., 
et al. (2015). Aerobic microbial respiration in oceanic oxygen minimum zones. 
PLoS One 10:e0133526. doi: 10.1371/journal.pone.0133526 
Kalvelage, T., Lavik, G., Lam, P., Contreras, S., Arteaga, L., Löscher, C., et al. (2013). 
Nitrogen cycling driven by organic matter export in the south pacific oxygen 
minimum zone. Nature Geosci. 6, 228-234. doi: 10.1038/ngeo1739 
Kawano, T. (2010). “Method for salinity (Conductivity Ratio) measurement; 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). 
Kiko, R., Brandt, P., Christiansen, S., Faustmann, J., Kriest, I., Rodrigues, E., et al. 
(2020). Zooplankton-Mediated fluxes in the eastern tropical North Atlantic. 
Front. Mar. Sci. 7:358. doi: 10.3389/fmars.2020.00358 
Kiko, R., and Hauss, H. (2019). On the estimation of zooplankton-mediated active 
fluxes in Oxygen Minimum Zone regions. Front. Mar. Sci. 6:741. doi: 10.3389/ 
fmars.2019.00741 
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