The strong similarities between zinc and silicon vertical profiles have led many studies to suggest the uptake of zinc in diatom frustules, followed by simultaneous remineralisation at depth. However, recent lab experiments have demonstrated that zinc, although essential for diatoms, is located in the organic part of the cell...
- What is generating the benthic nepheloid layers?
How ubiquitous, variable or persistent are nepheloid layers? What is the main process generating these "clouds at the bottom of the sea"? Gardner and co-workers explore these two critical questions, with a focus on the western North Atlantic for which numerous time series and survey data exist...
- Siderophores facilitate microbial adaptation to iron limitation in the eastern tropical Pacific Ocean
Siderophores are organic compounds secreted by microbes to facilitate iron uptake. Using new methods to characterize trace metal organic ligands in seawater, Boiteau and colleagues measured the distribution of siderophores along the US East Pacific Zonal Transect (EPZT; GEOTRACES GP16).
- Big success of the Arctic-GEOTRACES Early Career Scientists Event
Twenty seven early career scientists came together to kick off the ASLO Aquatic Sciences meeting in Honolulu, Hawai'i on 27 February 2017 to discuss emerging areas of international scientific collaboration within the Arctic GEOTRACES programme...
- "East Asia GEOTRACES Workshop" a successful workshop in Japan
The East Asia GEOTRACES Workshop was held on 16-18 January 2017 in Sapporo, Japan to evaluate the current status of trace elements and their isotopes (TEI) studies in the Northwestern Pacific Ocean and its marginal seas, and to identify important scientific questions and directions for future regional collaborative studies...
-Tagliabue, A., Bowie, A. R., Boyd, P. W., Buck, K. N., Johnson, K. S., & Saito, M. A. (2017). The integral role of iron in ocean biogeochemistry. Nature, 543(7643), 51–59. doi: 10.1038/nature21058
- Boyd, P. W., Ellwood, M. J., Tagliabue, A., & Twining, B. S. (2017). Biotic and abiotic retention, recycling and remineralization of metals in the ocean. Nature Geoscience, 10(3), 167–173. doi: 10.1038/ngeo2876
- Hutchins, D. A., & Boyd, P. W. (2016). Marine phytoplankton and the changing ocean iron cycle. Nature Climate Change, 6(12), 1072–1079. doi: 10.1038/nclimate3147
-Fitzsimmons, J. N., John, S. G., Marsay, C. M., Hoffman, C. L., Nicholas, S. L., Toner, B. M., German, C. R., Sherrell, R. M. (2017). Iron persistence in a distal hydrothermal plume supported by dissolved-particulate exchange. Nature Geoscience. doi: 10.1038/ngeo2900
- Poehle, S., & Koschinsky, A. (2017). Depth distribution of Zr and Nb in seawater: The potential role of colloids or organic complexation to explain non-scavenging-type behavior. Marine Chemistry, 188, 18–32. doi: 10.1016/j.marchem.2016.12.001
-John, S. G., Kunzmann, M., Townsend, E. J., & Rosenberg, A. D. (2017). Zinc and cadmium stable isotopes in the geological record: A case study from the post-snowball Earth Nuccaleena cap dolostone. Palaeogeography, Palaeoclimatology, Palaeoecology, 466, 202–208. doi: 10.1016/j.palaeo.2016.11.003
Banner 3D scene figure: 3D scene showing the distribution of dissolved iron in the Atlantic Ocean. Source: Schlitzer, R., eGEOTRACES - Electronic Atlas of GEOTRACES Sections and Animated 3D Scenes, http://www.egeotraces.org, 2014.