Sommer, Stefan; Dale, Andy W; Lomnitz, Ulrike; Mehrtens, Hela (eds.) (2021): SFB754 Benthic work (BIGO and MUC geochemistry) [dataset editorial publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.927050

In the Peruvian upwelling area, benthic biogeochemical fieldwork focused on the FS Meteor cruises M77/1, M77/2, M92, M136, and M137. Off Mauritania, benthic investigations were mainly conducted on FS Maria S. Merian cruise MSM17/4 and FS Meteor cruise M107 (Sommer et al., 2021; see Table 2 and supplementary Tables S29 to S35). Research questions addressed organic carbon degradation, associated element cycling, and solute fluxes in the benthic boundary layer in response to variable bottom water redox conditions and hydrodynamic forcing (e.g. Bohlen et al., 2011; Dale et al., 2014; Dale et al., 2016; Dale et al., 2019; Dale et al., 2021; Loginova et al., 2020; Lomnitz et al., 2016; Noffke et al., 2012; Plass et al., 2020; Schroller-Lomnitz et al., 2019; Sommer et al., 2016). Effects of variable bottom water conditions on seabed nutrient and trace metal release were studied during in situ and ex situ on-board sediment incubations and the analysis of pore water geochemistry. Further emphasis was placed on resolving the imprint of specific microbial processes and foraminiferal metabolic activity on element turnover and exchange across the sediment water interface (e.g. Glock et al., 2013, 2019, 2020; Gier et al., 2016, 2017; Scholz et al., 2016; 2017). The results were further interpreted using benthic numerical models (e.g. Bohlen et al., 2011; Dale et al., 2014, 2015, 2016, 2017, 2019).