A study on how moderate heating renders 7.8 million-year-old organic matter bioavailable in deep marine sediments
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| Autores principales: | , , , |
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| Formato: | Dataset Open Access |
| Lenguaje: | en |
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PANGAEA
2026
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| _version_ | 1867167683119677440 |
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| author | Gan, Shuchai Heuer, Verena B Adhikari, Rishi Ram Wörmer, Lars |
| author_facet | Gan, Shuchai Heuer, Verena B Adhikari, Rishi Ram Wörmer, Lars |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | In laboratory experiments on field-collected sediments, we investigated 7.8 million-year-old sediment from a site off the Nankai Trough, Japan, through incubation experiments to simulate future burial conditions. In a 55-day laboratory experiment, we incubated sediment slurried with artificial seawater in four subsets at 20°C (control), and at 35°C, 55°C, and 85°C to simulate future heating during burial and conditions favorable for mesophilic, thermophilic, and hyperthermophilic microorganisms, respectively. We investigated changes in dissolved organic matter quality as a function of microbial activity and temperature using 3D fluorescence spectroscopy (EEMs) and FT-ICR-MS, and analyzed dissolved manganese, iron, and sulfur to detect changes in the sediment's mineral matrix. We observed temperature- and time-dependent changes in the dissolved organic matter (DOM) pool. Data contains (1) bulk parameters about organics and inorganics in the dissolved phase, (2) release of the acetate during laboratory experiments, (3) details about the formulae characterized by Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS). |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_973415 |
| institution | PANGAEA |
| language | en |
| publishDate | 2026 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | A study on how moderate heating renders 7.8 million-year-old organic matter bioavailable in deep marine sediments Gan, Shuchai Heuer, Verena B Adhikari, Rishi Ram Wörmer, Lars "Subduction Inputs"; deep biosphere; DOM; Drilling Vessel DV Chikyu; humic decomposition; Hydrogenase; Integrated Ocean Drilling Program / International Ocean Discovery Program; International Ocean Drilling Program (IODP); IODP; IODP Expedition 322; microbial carbon pump; mineral carbon pump; Nankai Trough Seismogenic Zone Experiment (NanTroSEIZE); Site C0012; thermal environment In laboratory experiments on field-collected sediments, we investigated 7.8 million-year-old sediment from a site off the Nankai Trough, Japan, through incubation experiments to simulate future burial conditions. In a 55-day laboratory experiment, we incubated sediment slurried with artificial seawater in four subsets at 20°C (control), and at 35°C, 55°C, and 85°C to simulate future heating during burial and conditions favorable for mesophilic, thermophilic, and hyperthermophilic microorganisms, respectively. We investigated changes in dissolved organic matter quality as a function of microbial activity and temperature using 3D fluorescence spectroscopy (EEMs) and FT-ICR-MS, and analyzed dissolved manganese, iron, and sulfur to detect changes in the sediment's mineral matrix. We observed temperature- and time-dependent changes in the dissolved organic matter (DOM) pool. Data contains (1) bulk parameters about organics and inorganics in the dissolved phase, (2) release of the acetate during laboratory experiments, (3) details about the formulae characterized by Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS). |
| title | A study on how moderate heating renders 7.8 million-year-old organic matter bioavailable in deep marine sediments |
| topic | "Subduction Inputs"; deep biosphere; DOM; Drilling Vessel DV Chikyu; humic decomposition; Hydrogenase; Integrated Ocean Drilling Program / International Ocean Discovery Program; International Ocean Drilling Program (IODP); IODP; IODP Expedition 322; microbial carbon pump; mineral carbon pump; Nankai Trough Seismogenic Zone Experiment (NanTroSEIZE); Site C0012; thermal environment |
| url | https://doi.org/10.1594/PANGAEA.973415 |