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Laglera, Luis Miguel; Uskaikar, Hema; Klaas, Christine (2021): Iron redox speciation during ANT-XXV/3 - LOHAFEX fertilization experiment [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.926118

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Abstract:
This dataset includes all the Fe(II) measurements carried out during the LOHAFEX ocean iron fertilization (January- March 2009) in waters of a stable eddy located in the Atlantic sector of the Southern Ocean. Data serve the purpose to compare the effect of physicochemical and biological variables in changes in the proportion of Fe(II)/Fe(III) concentrations during the development of a flagellate/copepod bloom. Measurements were performed with a flow injection system where seawater is mixed with an alkaline luminol solution that emits lights proportionally to the concentration of reduced iron (Fe(II)). Data are split in one file showing Fe(II) concentrations before and after filtration through 0.2 mm in the upper 200 m of the water column and several files showing Fe(II) concentrations in unfiltered seawater collected with the underway sampling (11 m deep) while sailing across the fertilized patch. This is the first data sets that address the contribution of particles to Fe(II) concentrations in seawater. Transect Fe(II) data are accompanied by photosynthetic quantum efficiency (FV/FM) and chlorophyll-a data that allow the precise location of the fertilized patch edge.
Keyword(s):
Fe(II); iron speciation; redox reactions
Supplement to:
Laglera, Luis Miguel; Uskaikar, Hema; Klaas, Christine; Naqvi, Syed Wajih Ahmad; Wolf-Gladrow, Dieter A; Tovar-Sánchez, Antonio (2022): Dissolved and particulate iron redox speciation during the LOHAFEX fertilization experiment. Marine Pollution Bulletin, 184, 114161, https://doi.org/10.1016/j.marpolbul.2022.114161
Coverage:
Median Latitude: -43.998547 * Median Longitude: -18.534979 * South-bound Latitude: -48.163000 * West-bound Longitude: -48.402300 * North-bound Latitude: -14.475500 * East-bound Longitude: -14.187000
Date/Time Start: 2009-01-29T15:00:00 * Date/Time End: 2009-03-03T06:20:00
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
9 datasets

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Datasets listed in this publication series

  1. Laglera, LM; Uskaikar, H; Klaas, C (2021): Measurements from the continuos underway sampling of RV Polarstern of Fe(II), chlorophyll a and photosynthetic efficiency (FV/FM), Day 6. https://doi.org/10.1594/PANGAEA.926092
  2. Laglera, LM; Uskaikar, H; Klaas, C (2021): Measurements from the continuos underway sampling of RV Polarstern of Fe(II), chlorophyll a and photosynthetic efficiency (FV/FM), Day 9. https://doi.org/10.1594/PANGAEA.926093
  3. Laglera, LM; Uskaikar, H; Klaas, C (2021): Measurements from the continuos underway sampling of RV Polarstern of Fe(II), chlorophyll a and photosynthetic efficiency (FV/FM), Day 18. https://doi.org/10.1594/PANGAEA.926095
  4. Laglera, LM; Uskaikar, H; Klaas, C (2021): Measurements from the continuos underway sampling of RV Polarstern of Fe(II), chlorophyll a and photosynthetic efficiency (FV/FM), Day 23. https://doi.org/10.1594/PANGAEA.926097
  5. Laglera, LM; Uskaikar, H; Klaas, C (2021): Measurements from the continuos underway sampling of RV Polarstern of Fe(II), chlorophyll a and photosynthetic efficiency (FV/FM), Day 24. https://doi.org/10.1594/PANGAEA.926098
  6. Laglera, LM; Uskaikar, H; Klaas, C (2021): Measurements from the continuos underway sampling of RV Polarstern of Fe(II), chlorophyll a and photosynthetic efficiency (FV/FM), Day 25. https://doi.org/10.1594/PANGAEA.926099
  7. Laglera, LM; Uskaikar, H; Klaas, C (2021): Measurements from the continuos underway sampling of RV Polarstern of Fe(II), chlorophyll a and photosynthetic efficiency (FV/FM), Day 27. https://doi.org/10.1594/PANGAEA.926100
  8. Laglera, LM; Uskaikar, H; Klaas, C (2021): Measurements from the continuos underway sampling of RV Polarstern of Fe(II), chlorophyll a and photosynthetic efficiency (FV/FM), Day 27 Night. https://doi.org/10.1594/PANGAEA.926101
  9. Laglera, LM; Uskaikar, H; Klaas, C (2021): Iron measueremts of CTD casts during LOHAFEX expedition. https://doi.org/10.1594/PANGAEA.926103