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Sulu-Gambari, Fatimah; Seitaj, Dorina; Meysman, Filip J R; Schauer, Regina; Polerecky, Lubos; Slomp, Caroline P (2017): Cable bacteria control iron-phosphorus dynamics in sediments and water column at two sites of a Coastal Hypoxic Basin. PANGAEA, https://doi.org/10.1594/PANGAEA.876145, Supplement to: Sulu-Gambari, F et al. (2016): Cable bacteria control iron-phosphorus dynamics in sediments of a coastal hypoxic basin. Environmental Science & Technology, 50(3), 1227-1233, https://doi.org/10.1021/acs.est.5b04369

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Abstract:
Phosphorus is an essential nutrient for life. The release of phosphorus from sediments is critical in sustaining phytoplankton growth in many aquatic systems and is pivotal to eutrophication and the development of bottom water hypoxia. Conventionally, sediment phosphorus release is thought to be controlled by changes in iron oxide reduction driven by variations in external environmental factors, such as organic matter input and bottom water oxygen. Here, we show that internal shifts in microbial communities, and specifically the population dynamics of cable bacteria, can also induce strong seasonality in sedimentary iron-phosphorus dynamics. Field observations in a seasonally hypoxic coastal basin demonstrate that the long-range electrogenic metabolism of cable bacteria leads to a dissolution of iron sulfides in winter and spring. Subsequent oxidation of the mobilized ferrous iron with manganese oxides results in a large stock of iron-oxide-bound phosphorus below the oxic zone. In summer, when bottom water hypoxia develops and cable bacteria are undetectable, the phosphorus associated with these iron oxides is released, strongly increasing phosphorus availability in the water column. Future research should elucidate whether formation of iron-oxide-bound phosphorus driven by cable bacteria, as observed in this study, contributes to the seasonality in iron-phosphorus cycling in aquatic sediments worldwide
Further details:
Coverage:
Median Latitude: 51.747000 * Median Longitude: 3.892667 * South-bound Latitude: 51.747000 * West-bound Longitude: 3.890000 * North-bound Latitude: 51.747000 * East-bound Longitude: 3.898000
Date/Time Start: 2012-01-01T00:00:00 * Date/Time End: 2013-12-01T00:00:00
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12 datasets

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Datasets listed in this Collection

  1. Sulu-Gambari, F; Seitaj, D; Meysman, FJR et al. (2017): (Fig S1) Porewater geochemistry at site S1, Lake Grevelingen, The Netherlands. https://doi.org/10.1594/PANGAEA.876141
  2. Sulu-Gambari, F; Seitaj, D; Meysman, FJR et al. (2017): (Fig S2, S3, S4) Solid phase geochemistry at site S1, Lake Grevelingen, The Netherlands. https://doi.org/10.1594/PANGAEA.876142
  3. Sulu-Gambari, F; Seitaj, D; Meysman, FJR et al. (2017): (Tab S2) Flux of phosphate from the sediment to the water column as measured in incubations in cores at site S1, Lake Grevelingen, The Netherlands. https://doi.org/10.1594/PANGAEA.876133
  4. Sulu-Gambari, F; Seitaj, D; Meysman, FJR et al. (2017): (Tab S2) Flux of phosphate from the sediment to the water column as measured in incubations in cores at site S3, Lake Grevelingen, The Netherlands. https://doi.org/10.1594/PANGAEA.876134
  5. Sulu-Gambari, F; Seitaj, D; Meysman, FJR et al. (2017): Change in Fe-P inventory in sediment at S1, Lake Grevelingen, The Netherlands. https://doi.org/10.1594/PANGAEA.876135
  6. Sulu-Gambari, F; Seitaj, D; Meysman, FJR et al. (2017): Oxygen and phosphate in bottom water at site S1, Lake Grevelingen, The Netherlands. https://doi.org/10.1594/PANGAEA.876136
  7. Sulu-Gambari, F; Seitaj, D; Meysman, FJR et al. (2017): Oxygen in bottom water at site S3, Lake Grevelingen, The Netherlands. https://doi.org/10.1594/PANGAEA.876137
  8. Sulu-Gambari, F; Seitaj, D; Meysman, FJR et al. (2017): Phosphate in water column at site S1, Lake Grevelingen, The Netherlands. https://doi.org/10.1594/PANGAEA.876138
  9. Sulu-Gambari, F; Seitaj, D; Meysman, FJR et al. (2017): Porewater geochemistry at site S1, Lake Grevelingen, The Netherlands. https://doi.org/10.1594/PANGAEA.876139
  10. Sulu-Gambari, F; Seitaj, D; Meysman, FJR et al. (2017): Porewater geochemistry at site S3, Lake Grevelingen, The Netherlands. https://doi.org/10.1594/PANGAEA.876140
  11. Sulu-Gambari, F; Seitaj, D; Meysman, FJR et al. (2017): Solid phase geochemistry at site S3, Lake Grevelingen, The Netherlands. https://doi.org/10.1594/PANGAEA.876143
  12. Sulu-Gambari, F; Seitaj, D; Meysman, FJR et al. (2017): Total change of phosphate at site S1, Lake Grevelingen, The Netherlands. https://doi.org/10.1594/PANGAEA.876144