• Deep-sea sponge grounds as nutrient sinks: Denitrification is common in boreo-Arctic sponges 

      Rooks, Christine; Fang, James Kar-Hei; Mørkved, Pål Tore; Zhao, Rui; Rapp v/dødsbo, Hans Tore; Xavier, Joana R; Hoffmann, Friederike (Journal article; Peer reviewed, 2020-03)
      Sponges are commonly known as general nutrient providers for the marine ecosystem, recycling organic matter into various forms of bioavailable nutrients such as ammonium and nitrate. In this study we challenge this view. ...
    • Fe(II) stability in coastal seawater during experiments in Patagonia, Svalbard, and Gran Canaria 

      Hopwood, Mark J.; Santana-González, Carolina; Gallego-Urrea, Julian Alberto; Sanchez, Nicolas; Achterberg, Eric P.; Ardelan, Murat Van; Gledhill, Martha; González-Dávila, Melchor; Hoffmann, Linn; Leiknes, Øystein; Santana-Casiano, Juana Magdalena; Tsagaraki, Tatiana Margo; Turner, David (Journal article; Peer reviewed, 2020-03)
      The speciation of dissolved iron (DFe) in the ocean is widely assumed to consist almost exclusively of Fe(III)-ligand complexes. Yet in most aqueous environments a poorly defined fraction of DFe also exists as Fe(II), the ...
    • Phytoplankton dynamics in contrasting early stage North Atlantic spring blooms: composition, succession, and potential drivers 

      Daniels, Chris; Poulton, Alex J.; Mario, Esposito; Paulsen, Maria Lund; Bellerby, Richard; St. John, Mike; Martin, Adrian P. (Peer reviewed; Journal article, 2015-04-24)
      The spring bloom is a key annual event in the phenology of pelagic ecosystems, making a major contribution to the oceanic biological carbon pump through the production and export of organic carbon. However, there is little ...