My research revolves around dissolved organic matter cycling in aquatic systems. In particular I study bacterial transformations of dissolved organic carbon (DOC) and how different factors, namely the origin and molecular structure of the organic matter, temperature, the availability of nutrients and the structure of the bacterial community, regulates how and to what extent DOC is processed by bacteria. Within my research I overlap the fields of biogeochemistry, microbiology and genetic structure/diversity.
Currently I am involved in several research projects including freshwater, brackish as well as marine systems. My main focus is to study the connection between origin, molecular structure and turnover of dissolved organic matter. I am especially interested in the role and fate of terrestrial DOM in inland systems and the Baltic Sea. To what extent is terrestrial organic matter stored or decomposed once it reaches the marine system, and which factors determine that? Im also interested in the factors behind this increasing export of organic matter from the terrestrial system.
Ekström SM, Kritzberg ES, Kleja DB, Larsson N, Nilsson PA, Graneli W, Bergkvist B. 2011. Effect of Acid Deposition on Quantity and Quality of Dissolved Organic Matter in SoilWater Environmental Science & Technology In press.
Kritzberg EK, Duarte CM, Wassmann P. 2010. Changes in Arctic marine bacterial carbon metabolism in response to increasing temperature. Polar Biology 33: 1673-1682
Lindström ES, Feng X, Granéli W, Kritzberg ES. 2010. The interplay between bacterial community composition and the environment determining function of inland water bacteria. Limnology and Oceanography 55: 2052-2060
Kritzberg EK, Arrieta JM, Duarte CM. 2010. Temperature and phosphorus regulating carbon flux through bacteria in a coastal marine system. Aquatic Microbial Ecology 58:141-151
Östman Ö, Drakare S, Kritzberg ES, Langenheder S, Logue J, Lindström E. 2010. Regional invariance among microbial communities. Ecology Letters 13:118-127
Kritzberg ES, Cole JJ, Pace ML, Granéli W. 2006. Bacterial growth on allochthonous carbon in humic and nutrient-enriched lakes: Results from whole-lake 13C addition experiments. Ecosystems 9:489-499
Kritzberg ES, Langenheder S, Lindström ES. 2006. Influence of dissolved organic matter source on lake bacterioplankton community structure and function implications for seasonal dynamics. FEMS Microbiology Ecology 56:406-417
Carpenter SR, Cole JJ, Pace ML, Van de Bogert M, Bade DL, Bastviken D, Gille C, Hodgson JR, Kitchell JF, Kritzberg ES. 2005. Ecosystem subsidies: Terrestrial support of aquatic food webs from 13C addition to contrasting lakes. Ecology 86:2737-2750
Pålsson C, Kritzberg ES, Christoffersen K, Granéli W. 2005. High importance of mixotrophic phytoplankton and allochthonous carbon in oligotrophic clear-water lakes. Freshwater Biology 50:2011-2020
Kritzberg ES, Cole JJ, Pace ML, Granéli W. 2005. Does autochthonous primary production drive variability in bacterial metabolism and growth efficiency in lakes dominated by terrestrial C inputs? Aquatic Microbial Ecology 38:103-111
Kritzberg ES, Cole JJ, Pace ML, Granéli W, Bade D. 2004. Autochthonous versus allochthonous carbon sources to bacteria: Results from whole-lake 13C addition experiments. Limnology and Oceanography 49:588-596
Pace ML, Cole JJ, Carpenter SR, Kitchell JF, Hodgson JR, Van de Bogert MC, Bade DL, Kritzberg ES, Bastviken D. 2004. Whole-lake carbon-13 additions reveal terrestrial support of aquatic food webs. Nature 427:240-24
PhD students, main advisor:
PhD students, assistant advisor: