| Summary: | The WHONDRS Summer 2019 Sampling (S19S) Campaign collected samples in 97 globally distributed river corridor systems between July and September 2019. Surficial streambed sediments were collected at three locations within each site (upstream, midstream, and downstream). Surface water was collected at the downstream site. This dataset includes a portion of the data types produced from the sediment samples and does not include any results from the surface water. Surface water data can be found at https://data.ess-dive.lbl.gov/view/doi:10.15485/1603775. Future datasets from this study will include geochemical, hydrologic, and microbial data from the surface water and sediment. The S19S campaign was designed with the science community to ask questions associated with links among core/transient metabolomes, microbial metabolism, biogeochemical function, and physical properties of watershed and river corridor systems. This dataset contains (1) high resolution characterization of dissolved organic matter from sediment via 12 Tesla Fourier transform ion cyclotron resonance mass spectrometry (FTICR-MS) through the Environmental Molecular Sciences Laboratory (EMSL; https://www.pnnl.gov/environmental-molecular-sciences-laboratory); (2) dissolved organic carbon (DOC, measured as non-purgeable organic carbon, NPOC); (3) respiration rates calculated from laboratory incubations; (4) X-ray fluorescence (XRF) elemental composition; (5) grain size distribution from the < 2 millimeter fraction of sediment; (6) total organic carbon and total nitrogen content; (7) bacterial abundance flow cytometry data; (8) sediment stable isotopes (C and N); (9) site photos; (10) field and laboratory methods metadata; (11) file-level metadata (flmd); and (12) data dictionary (dd). The FTICR-MS files are .xml, and the data package includes instructions for using Formularity (https://omics.pnl.gov/software/formularity) and an R script to process the data based on the user’s specific needs. The XRF data includes .msa, .txt, and .spx files. All other data files are .csv, .pdf, .txt, .jpg, or .jpeg. This data package was originally published in December 2020. It was updated in April 2021, May 2022, November 2022, January 2023, and February 2023. See the change history section in the data package readme for more details.
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