• Acidification of the Nordic Seas 

      Fransner, Sara Filippa Krusmynta; Fröb, Friederike; Tjiputra, Jerry; Goris, Nadine; Lauvset, Siv Kari; Skjelvan, Ingunn; Jeansson, Emil; Omar, Abdirahman; Chierici, Melissa; Jones, Elizabeth Marie; Fransson, Agneta; Ólafsdóttir, Sólveig R.; Johannessen, Truls; Olsen, Are (Journal article; Peer reviewed, 2022)
      Due to low calcium carbonate saturation states, and winter mixing that brings anthropogenic carbon to the deep ocean, the Nordic Seas and their cold-water corals are vulnerable to ocean acidification. Here, we present a ...
    • Compositions of dissolved organic matter in the ice-covered waters above the Aurora hydrothermal vent system, Gakkel Ridge, Arctic Ocean 

      Sert, Muhammed Fatih; Niemann, Helge; Reeves, Eoghan; Granskog, Mats A.; Hand, Kevin P.; Kekäläinen, Timo; Jänis, Janne; Rossel, Pamela; Ferré, Benedicte; Silyakova, Anna; Gründger, Friederike (Journal article; Peer reviewed, 2022)
      Hydrothermal vents modify and displace subsurface dissolved organic matter (DOM) into the ocean. Once in the ocean, this DOM is transported together with elements, particles, dissolved gases and biomass along with the ...
    • 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, 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. ...
    • Evaluation of ocean dimethylsulfide concentration and emission in CMIP6 models 

      Bock, Josué; Michou, Martine; Nabat, Pierre; Abe, Manabu; Mulcahy, Jane P.; Oliviè, Dirk Jan Leo; Schwinger, Jörg; Suntharalingam, Parvadha; Tjiputra, Jerry; van Hulten, Marco Marinus Peter; Watanabe, Michio; Yool, Andrew; Séférian, Roland (Journal article; Peer reviewed, 2021)
      Characteristics and trends of surface ocean dimethylsulfide (DMS) concentrations and fluxes into the atmosphere of four Earth system models (ESMs: CNRM-ESM2-1, MIROC-ES2L, NorESM2-LM, and UKESM1-0-LL) are analysed over the ...
    • Experiment design and bacterial abundance control extracellular H2O2 concentrations during four series of mesocosm experiments 

      Hopwood, M. J.; Sanchez, Nicolas; Polyviou, Despo; Leiknes, Øystein; Gallego-Urrea, Julian Alberto; Achterberg, Eric P.; Ardelan, Murat Van; Aristegui, Javier; Bach, Lennart T.; Besiktepe, Sengul; Heriot, Yohann; Kalantzi, Ioanna; Terblylk Kurt, Tuba; Santi, Ioulia; Tsagaraki, Tatiana Margo; Turner, David (Journal article; Peer reviewed, 2020)
      The extracellular concentration of H2O2 in surface aquatic environments is controlled by a balance between photochemical production and the microbial synthesis of catalase and peroxidase enzymes to remove H2O2 from solution. ...
    • 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 ...
    • First phytoplankton community assessment of the Kong Håkon VII Hav, Southern Ocean, during austral autumn 

      Kauko, Hanna Maria; Assmy, Philipp; Peeken, Ilka; Rózańska-Pluta, Magdalena; Wiktor, Józef M; Bratbak, Gunnar; Singh, Asmita; Ryan-Keogh, Thomas J.; Moreau, Sebastien (Journal article; Peer reviewed, 2022)
      We studied phytoplankton and protozooplankton community composition based on light microscopy, flow cytometry, and photosynthetic pigment data in the Atlantic sector of the Southern Ocean during March 2019 (early austral ...
    • Geodiversity and biodiversity on a volcanic island: The role of scattered phonolites for plant diversity and performance 

      Kienle, David; Walentowitz, Anna; Sungur, Leyla; Chiarucci, Alessandro; Irl, Severin D. H.; Jentsch, Anke; Vetaas, Ole Reidar; Field, Richard; Beierkuhnlein, Carl (Journal article; Peer reviewed, 2022)
      Oceanic islands are cradles of endemism, contributing substantially to global biodiversity. A similarity in magmatic origin translates into high global comparability of substrates of volcanic islands on the oceanic crust ...
    • The northern European shelf as an increasing net sink for CO2 

      Becker, Meike; Olsen, Are; Landschützer, Peter; Omar, Abdirahman; Rehder, Gregor; Rödenbeck, Christian; Skjelvan, Ingunn (Journal article; Peer reviewed, 2021)
      We developed a simple method to refine existing open-ocean maps and extend them towards different coastal seas. Using a multi-linear regression we produced monthly maps of surface ocean fCO2 in the northern European coastal ...
    • On giant shoulders: how a seamount affects the microbialcommunity composition of seawater and sponges 

      Busch, Kathrin; Hanz, Ulrike; Mienis, Furu; Mueller, Benjamin; Franke, Andre; Roberts, Emyr Martyn Tomas; Rapp, Hans Tore; Hentschel, Ute (Journal article; Peer reviewed, 2020)
      Seamounts represent ideal systems to study the influence and interdependency of environmental gradients at a single geographic location. These topographic features represent a prominent habitat for various forms of life, ...
    • Riverine impact on future projections of marine primary production and carbon uptake 

      Gao, Shuang; Schwinger, Jörg; Tjiputra, Jerry; Bethke, Ingo; Hartmann, Jens; Mayorga, Emilio; Heinze, Christoph (Journal article; Peer reviewed, 2023)
      Riverine transport of nutrients and carbon from inland waters to the coastal and finally the open ocean alters marine primary production (PP) and carbon (C) uptake regionally and globally. So far, this process has not been ...