Blar i Publikasjoner fra CRIStin - NTNU på tidsskrift "Biogeosciences"

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    • Continuous and discontinuous variation in ecosystem carbon stocks with elevation across a treeline ecotone 

      Speed, James David Mervyn; Martinsen, Vegard; Hester, Alison J.; Holand, Øystein; Mulder, Jan; Mysterud, Atle; Austrheim, Gunnar (Journal article; Peer reviewed, 2015)
      Treelines differentiate vastly contrasting ecosystems: open tundra from closed forest. Treeline advance has implications for the climate system due to the impact of the transition from tundra to forest ecosystem on ...

    • Environmental and taxonomic controls of carbon and oxygen stable isotope composition in Sphagnum across broad climatic and geographic ranges 

      Granath, Gustaf; Rydin, Håkan; Baltzer, JL; Bengtsson, F; bonocek, n; Bragazza, Luca; Bu, Z-J; Caporn, SJM; Dorrepaal, Ellen; Galanina, O; Galka, M; Ganeva, Anna; Gilikin, DP; Goia, I; Goncharova, N; Hájek, Michal; Haraguchi, A; Harris, Lorna I; Humphreys, E; Jiroušek, M; Kajukało, K; Karofeld, E; Koronatova, NG; Kosykh, NP; Lamentowicz, Mariusz; Lapshina, Elena D.; Limpens, Juul; Linkosalmi, Maiju; Ma, J-Z; Mauritz, Marguerite; Munir, TM; Natali, SM; Natcheva, Rayna; Noskova, M; Payne, Richard J.; Pilkington, K; Robinson, Sean,; Robroek, Bjorn J M; Rochefort, L.; Singer, David; Stenøien, Hans K.; Tuttila, E-S; Vellak, Kai; Verheyden, A; Waddington, JM; Rice, SK (Journal article; Peer reviewed, 2018)
      Rain-fed peatlands are dominated by peat mosses (Sphagnum sp.), which for their growth depend on nutrients, water and CO2 uptake from the atmosphere. As the isotopic composition of carbon (12,13C) and oxygen (16,18O) of ...

    • 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 (Peer reviewed; Journal article, 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 (Peer reviewed; Journal article, 2020)
      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 ...

    • Interpreting eddy covariance data from heterogeneous Siberian tundra: Land-cover-specific methane fluxes and spatial representativeness 

      Tuovinen, Juha Pekka; Aurela, Mika; Hatakka, Juha; Räsänen, Tuomas Aleksi; Virtanen, Tarmo; Mikola, Juha; Ivakhov, Viktor; Kondratyev, Vladimir; Laurila, Tuomas (Journal article; Peer reviewed, 2019)
      The non-uniform spatial integration, an inherent feature of the eddy covariance (EC) method, creates a challenge for flux data interpretation in a heterogeneous environment, where the contribution of different land cover ...

    • Medium-term exposure of the North Atlantic copepod Calanus finmarchicus (Gunnerus, 1770) to CO2-acidified seawater: effects on survival and development 

      Pedersen, Sindre Andre; Hansen, Bjørn Henrik; Altin, D; Olsen, Anders Johny (Journal article; Peer reviewed, 2013)
      The impact of medium-term exposure to CO2-acidified seawater on survival, growth and development was investigated in the North Atlantic copepod Calanus finmarchicus. Using a custom developed experimental system, fertilized ...

    • Radiative forcing bias of simulated surface albedo modifications linked to forest cover changes at northern latitudes 

      Bright, Ryan M.; Myhre, Gunnar; Astrup, Rasmus Andreas; Antón-Fernández, Clara; Strømman, Anders Hammer (Journal article; Peer reviewed, 2015)
      In the presence of snow, the bias in the prediction of surface albedo by many climate models remains difficult to correct due to the difficulties of separating the albedo parameterizations from those describing snow and ...

    • Spatial variation and linkages of soil and vegetation in the Siberian Arctic tundra – coupling field observations with remote sensing data 

      Mikola, Juha; Virtanen, Tarmo; Linkosalmi, Maiju; Vähä, Emmi; Nyman, Johanna; Postagonova, Olga; Räsänen, Aleksi; Kotze, Johan; Laurila, Tuomas; Juutinen, Sari; Kondatyev, Vladimir; Aurela, Mika (Journal article; Peer reviewed, 2018)
      Arctic tundra ecosystems will play a key role in future climate change due to intensifying permafrost thawing, plant growth and ecosystem carbon exchange, but monitoring these changes may be challenging due to the heterogeneity ...