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Oehler, Till; Martinez, Roi; Schückel, Ulrike; Winter, Christian; Kröncke, Ingrid; Schlüter, Michael (2015): Benthic oxygen and nitrogen fluxes at different time series sites in the southern North Sea, 2012 to 2014 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.847445, Supplement to: Oehler, T et al. (2015): Seasonal and spatial variations of benthic oxygen and nitrogen fluxes in the Helgoland Mud Area (southern North Sea). Continental Shelf Research, 106, 118-129, https://doi.org/10.1016/j.csr.2015.06.009

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Published: 2015-06-23 • DOI registered: 2015-07-27

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Abstract:
Benthic oxygen and nitrogen fluxes were quantified within the years 2012 to 2014 at different time series sites in the southern North Sea with the benthic lander NuSObs (Nutrient and Suspension Observatory). In situ incubations of sediments, in situ bromide tracer studies, sampling of macrofauna and pore water investigations revealed considerable seasonal and spatial variations of oxygen and nitrogen fluxes.
Seasonal and spatial variations of oxygen fluxes were observed between two different time series sites, covering different sediment types and/or different benthic macrofaunal communities. On a sediment type with a high content of fine grained particles (<63 µm) oxygen fluxes of -15.5 to -25.1 mmol/m**2/d (June 2012), -2.0 to -8.2 mmol/m**2/d (March 2013), -16.8 to -21.5 mmol/m**2/d (November 2013) and -6.1 mmol/m**2/d (March 2014) were measured. At the same site a highly diverse community of small species of benthic macrofauna was observed. On a sediment type with a low content of fine grained particles (<63 µm) high oxygen fluxes (-33.2 mmol/m**2/d August 2012; -47.2 to -55.1 mmol/m**2/d November 2013; -16.6 mmol/m**2/d March 2014) were observed. On this sediment type a less diverse benthic macrofaunal community, which was dominated by the large bodied suspension feeder Ensis directus, was observed.
Average annual rain rates of organic carbon and organic nitrogen to the seafloor of 7.44 mol C/m**2/y and 1.34 mol N/m**2/y were estimated. On average 79% of the organic bound carbon and 95% of the organic bound nitrogen reaching the seafloor are recycled at the sediment-water interface.
Coverage:
Median Latitude: 54.115780 * Median Longitude: 8.128491 * South-bound Latitude: 54.062500 * West-bound Longitude: 7.965800 * North-bound Latitude: 54.210300 * East-bound Longitude: 8.349200
Date/Time Start: 2012-06-28T12:13:00 * Date/Time End: 2014-03-21T11:45:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
14 datasets

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Datasets listed in this publication series

  1. Oehler, T; Martinez, R; Schückel, U et al. (2015): Bottom water data time series at benthic lander NuSOB station HE383/46-2. https://doi.org/10.1594/PANGAEA.847292
  2. Oehler, T; Martinez, R; Schückel, U et al. (2015): Pore water nutrients, metals and ions during HEINCKE cruise HE383. https://doi.org/10.1594/PANGAEA.846849
  3. Oehler, T; Martinez, R; Schückel, U et al. (2015): Bottom water data time series at benthic lander NuSOB station HE386/01-2. https://doi.org/10.1594/PANGAEA.847294
  4. Oehler, T; Martinez, R; Schückel, U et al. (2015): Bottom water data time series at benthic lander NuSOB station HE386/33-1. https://doi.org/10.1594/PANGAEA.847296
  5. Oehler, T; Martinez, R; Schückel, U et al. (2015): Pore water nutrients, metals and ions during HEINCKE cruise HE386. https://doi.org/10.1594/PANGAEA.846850
  6. Oehler, T; Martinez, R; Schückel, U et al. (2015): Bottom water data time series at benthic lander NuSOB station HE395/38-2. https://doi.org/10.1594/PANGAEA.847297
  7. Oehler, T; Martinez, R; Schückel, U et al. (2015): Bottom water data time series at benthic lander NuSOB station HE395/56-1. https://doi.org/10.1594/PANGAEA.847298
  8. Oehler, T; Martinez, R; Schückel, U et al. (2015): Pore water nutrients, metals and ions during HEINCKE cruise HE395. https://doi.org/10.1594/PANGAEA.846851
  9. Oehler, T; Martinez, R; Schückel, U et al. (2015): Bottom water data time series at benthic lander NuSOB station HE412/27-1. https://doi.org/10.1594/PANGAEA.847299
  10. Oehler, T; Martinez, R; Schückel, U et al. (2015): Bottom water data time series at benthic lander NuSOB station HE412/38-1. https://doi.org/10.1594/PANGAEA.847300
  11. Oehler, T; Martinez, R; Schückel, U et al. (2015): Pore water nutrients, metals and ions during HEINCKE cruise HE412. https://doi.org/10.1594/PANGAEA.846852
  12. Oehler, T; Martinez, R; Schückel, U et al. (2015): Bottom water data time series at benthic lander NuSOB station HE417/38-1. https://doi.org/10.1594/PANGAEA.847288
  13. Oehler, T; Martinez, R; Schückel, U et al. (2015): Bottom water data time series at benthic lander NuSOB station HE417/54-1. https://doi.org/10.1594/PANGAEA.847289
  14. Oehler, T; Martinez, R; Schückel, U et al. (2015): Pore water nutrients, metals and ions during HEINCKE cruise HE417. https://doi.org/10.1594/PANGAEA.846853