Blar i NIVA Open Access Archive på forfatter "Karlsson, Jan"

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    • Browning affects pelagic productivity in northern lakes by surface water warming and carbon fertilization 

      Puts, Isolde C.; Ask, Jenny; Deininger, Anne; Jonsson, Anders; Karlsson, Jan; Bergström, Ann-Kristin (Peer reviewed; Journal article, 2022)
      Global change impacts important environmental drivers for pelagic gross primary production (GPP) in northern lakes, such as temperature, light, nutrient, and inorganic carbon availability. Separate and/or synergistic impacts ...

    • Multitrophic biodiversity patterns and environmental descriptors of sub-Arctic lakes in northern Europe 

      Lau, Danny C.P.; Christoffersen, Kirsten S.; Erkinaro, Jaakko; Hayden, Brian; Heino, Jani; Hellsten, Seppo; Holmgren, Kerstin; Kahilainen, Kimmo Kalevi; Kahlert, Maria; Karjalainen, Satu Maaria; Karlsson, Jan; Forsström, Laura; Lento, Jennifer; Mjelde, Marit; Ruuhijärvi, Jukka; Sandøy, Steinar; Schartau, Ann Kristin; Svenning, Martin; Vrede, Tobias; Goedkoop, Willem (Peer reviewed; Journal article, 2020)
      1. Arctic and sub-Arctic lakes in northern Europe are increasingly threatened by climate change, which can affect their biodiversity directly by shifting thermal and hydrological regimes, and indirectly by altering landscape ...

    • Pelagic food webs of humic lakes show low short-term response 

      Deininger, Anne; Jonsson, Anders; Karlsson, Jan; Bergström, Ann-Kristin (Journal article; Peer reviewed, 2019)
      Forest harvest in the boreal zone can increase the input of terrestrial materials such as dissolved organic carbon (DOC) and nitrate (NO3) into nearby aquatic ecosystems,with potential effects on phytoplankton growth through ...

    • Response of lake metabolism to catchment inputs inferred using high-frequency lake and stream data from across the northern hemisphere 

      Corman, Jessica R.; Zwart, Jacob A.; Klug, Jennifer; Bruesewitz, Denise A.; de Eyto, Elvira; Klaus, Marcus; Knoll, Lesley B.; Rusak, James A.; Vanni, Michael J.; Alfonso, María Belén; Fernandez, Rocio Luz; Yao, Huaxia; Austnes, Kari; Couture, Raoul-Marie; de Wit, Heleen; Karlsson, Jan; Laas, Alo (Peer reviewed; Journal article, 2023)
      In lakes, the rates of gross primary production (GPP), ecosystem respiration (R), and net ecosystem production (NEP) are often controlled by resource availability. Herein, we explore how catchment vs. within lake predictors ...