<rahmann et al. 
Metabolic Rates of Benthic Microorganisms and 
Their Role in Benthic N-Cycling 
Denitrification and oxygen respiration rates of benthic 
microorganisms (i.e., foraminifera) were measured during one 
cruise to the Peruvian OMZ (M137) and one research trip 
to the Swedish Gullmar Fjord (Woehle et al., 2018; Glock 
2t al., 2019). The rates were calculated from linear steady-state 
gradients of nitrous oxide or oxygen in glass microcapsules (after 
Hogslund et al., 2008; Pifia-Ochoa et al., 2010; Glock et al., 2019). 
Abundances of living benthic foraminifera were determined on 
three cruises to the Peruvian OMZ (Mallon et al., 2012; Glock 
zt al., 2013; Erdem et al., 2020). Total abundances and individual 
metabolic rates were used to upscale to the total contribution of 
foraminifers to benthic N-fluxes and nitrate storage (Glock et al., 
2013, 2019). On M137, intracellular phosphate storage was also 
investigated (Glock et al., 2020). 
SUMMARY 
The SFB 754 project was a milestone for the investigation 
of biogeochemical and physical interactions in the tropical 
oaceans. The extended period of funding granted by the German 
Research Foundation allowed for the development of a highly 
interdisciplinary research program that has lead to a wealth of 
new insights documented in a large number of publications, 
theses, and presentations. The open access publication of the 
large number of different data sets collected during the project 
can be expected to form a lasting legacy well beyond the project 
itself. We anticipate and look forward to many more publications 
and projects that will build upon this unique basis. 
DATA AVAILABILITY STATEMENT 
The datasets presented in this study can be found in online 
repositories. The names of the repository/repositories and 
accession number(s) can be found in the article/Supplementary 
Material. 
SFB754 Data Legacy 
the common sections. HM handled the data submissions to 
PANGAEBA. All authors contributed to the article and approved 
the submitted version. 
FUNDING 
We gratefully acknowledge the financial support for the 
“Sonderforschungsbereich 754: Climate-Biogeochemistry 
Interactions in the Tropical Ocean” by the DFG. The main 
support for the cruises M91 and MSM18/3 came through the 
BMBF-funded joint projects SOPRAN I-III (FKZ 03F0462, 
03F0611, and 03F0662). Cruise SO243 was mainly supported 
by the BMBF-funded project SO243 - ASTRA-OMZ (FKZ 
03G0243A). Support for cruises ATA_IFMGEOMAR_4, M80/1, 
MSM18/2, MSM22, M130, and M145 came also through the 
BMBF-funded joint projects NORDATLANTIK, RACE, and 
RACE II (FKZ 03F0443B, 03F0651B, and 03F0729C). Cruises 
MSM22 and M105 received further support from the EU-funded 
project CARBOCHANGE (grant 264879). 
ACKNOWLEDGMENTS 
We would like to extend our sincere thanks to the authorities 
from the countries bordering the Eastern Tropical Pacific and 
che Tropical Atlantic for granting the permissions to conduct 
studies in their territorial waters. The captains and crews of 
the research vessels made our measurements possible with 
'heir much appreciated invariably skilled support. Principal 
investigators, scientists, students, technicians, administrators, 
and support personnel all worked together to form the 
SFB 754 and a big thank you goes to all of them. The 
Deutsche Forschungsgemeinschaft of course deserves our deep 
gratitude for making such long-term and large-scale science 
projects possible. 
SUPPLEMENTARY MATERIAL 
AUTHOR CONTRIBUTIONS 
Sach of authors wrote subsections of the manuscript and 
provided data for the tables. GK combined the input and wrote 
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