Dr. Kristin Scharnweber

Current employment

Since March 2021: Scientific coordinator of the DFG-funded Research Training Group (RTG) BioMove for 'Integrating Biodiversity Research with Movement Ecology in dynamic agricultural landscapes' 

Education

2019                     Evolutionary Biology Centre, Department of Ecology and Genetics; Limnology, Uppsala
                               University, Sweden
                               Docent in Biology with specialization in Limnology (Swedish equivalent to German Habilitation)

2014-2020          Evolutionary Biology Centre, Department of Ecology and Genetics; Limnology,  Uppsala University, Sweden   
                               Postdoctoral researcher

2010-2013          Department of Biology and Ecology of Fishes, Leibniz-Institute of Freshwater Ecology
                               and Inland Fisheries (IGB), Berlin, Germany
                               PhD within the TERRALAC-project: The effects of structural complexity on ecological and evolutionary processes in shallow lake                                                   ecosystems.

2006-2010          Department of Biology, University of Potsdam, Germany
                                Advanced studies of Biological Sciences with focus on Animal Ecology, Evolution, Limnology and 
                                Behavior   
                                External diploma thesis at Texas A&M University, College Station, Texas, USA: Trophic niche 
                                segregation between sexual and asexual species of the genus Poecilia.        

2004-2006          Department of Biology,University of Hamburg, Germany
                                Basic studies of Biological Sciences. Intermediate diploma.

Research interests

• aquatic ecosystem ecology
• aquatic-terrestrial linkages
• food web ecology
• evolutionary ecology
• animal mediation of carbon cycling
• population divergence of consumers
• predator induced morphological defenses.

Project

DFG Research Training Group BioMove

Publications

• Závorka L, Blanco A, Chaguaceda F, Cucherousset J, Killen SS, Lienart C, Mathieu-Resuge M, Němec P, Pilecky M, Scharnweber K, Twining CW, Kainz M J(2022). The role of bioactive molecules as a common currency in eco-evo-devo dynamics. TREE. DOI: 10.1016/j.tree.2022.08.010
• Mehner, T., Attermeyer, K., Brauns, M., Brothers, S., Hilt,S., Scharnweber, K.,et al . Trophic Transfer Efficiency in Lakes. Ecosystems (2022). doi.org/10.1007/s10021-022-00776-3
• Scharnweber, K., Chaguaceda, F., Eklöv, P. 2021. Fatty acid accumulation in feeding types of a natural freshwater fish population. Oecologia 196: 53-63. doi.org/10.1007/s00442-021-04913-y
• Scharnweber, K., Andersson, M. L., Chaguaceda, F., Eklöv, P. 2021. Intra-specific differences in metabolic rates shape carbon stable isotope trophic discrimination factors of muscle tissue in the common teleost Eurasian perch (Perca fluviatilis). Ecology and Evolution 11 (14): 9804-9814. *both authors contributed equally.  https://doi.org/10.1002/ece3.7809
• Scharnweber, K., Peura, S., Attermeyer, K., Bertilsson, S., Bolender, L., Buck, M., Einarsdóttir, K., Garcia, S. L., Gollnisch, R., Grasset, C., Groeneveld, M., Hawkes, J., Lindström, E. S., Manthey, C., Rengefors, K., Sedano-Núñez, V. T., Tranvik, L. J., Övergaard, R. & Székely, A. J. 2021. Comprehensive analysis of chemical and biological problems associated with browning agents used in aquatic studies. Limnology and Oceanography: Methods 19 (12) 818-835. doi.org/10.1002/lom3.10463
• Chaguaceda, F., Scharnweber, K., Dalman, E., Tranvik, L. & Eklöv, P. Short-term apparent mutualism drives responses of aquatic prey to increasing productivity. Accepted in Journal of Animal Ecology.
• Grasset, C., Sobek, S., Scharnweber, K., Moras, S., Villwock, H., Andersson, S., Hiller, C., Chaguaceda, F., Colom, W. & Tranvik, L. 2020. Non-linear response of the CO2-equivalent balance of freshwater ecosystems to productivity. Global Change Biology 26 (10): 5705-5715.
• Scharnweber, K., Gårdmark, A. 2020. Feeding specialists on fatty acid rich prey have higher gonad weights: pay-off in Baltic perch? Ecosphere 11(8):e03234. 10.1002/ecs2.3234.
• Scharnweber, K. 2020. Morphological and trophic divergence of lake and stream minnows (Phoxinus phoxinus). Ecology and Evolution 10 (15): 8358-8367.
• Chaguaceda, F., Eklöv, P. & Scharnweber, K. 2020. Regulation of fatty acid composition related to ontogenetic changes and niche differentiation of a common aquatic consumer. Oecologia 193: 325-336.
• Scharnweber, K., Chaguaceda, F., Dahlman, E., L. J. Tranvik & Eklöv, P. 2020. The emergence of fatty acids – Aquatic insects as vectors along a productivity gradient. Freshwater Biology. 65 (3): 565-578.
• Marklund M. H. K., Svanbäck, R., Faulks, L., Breed, M., Scharnweber, K., Zha, Y. & Eklöv, P. 2019. Asymmetrical habitat coupling of an aquatic predator – the importance of individual specialisation. Ecology and Evolution 9 (6): 3405-3415.
• Nydahl, A. C., Wallin, M. B., Tranvik, L. J., Hiller, C., Attermeyer, K., Garrison, J., Chaguaceda, F., Scharnweber, K. & Weyhenmeyer, G. A. 2019. Colored organic matter increases CO2 in meso-eutrophic lake water through altered light climate and acidity. Limnology & Oceanography 64 (2): 744-756.
• Mehner, T., Lischke, B., Scharnweber, K., Attermeyer, K., Brothers, S., Gaedke, U., Hilt, S. & Brucet, S. 2018. Empirical correspondence between trophic transfer efficiency in freshwater food webs and the slope of their size spectra. Ecology 99 (6): 1463-1472.
• Marklund, M. H. K., Svanbäck, R., Zha, Y., Scharnweber, K. & Eklöv, P. 2018. The influence of habitat accessibility on the dietary and morphological specialization of an aquatic predator. Oikos 127 (1): 160-169.
• Lischke, B., Mehner, T., Hilt, S., Attermeyer, K., Brauns, M., Brothers, S., Grossart, H. P., Köhler, J. Scharnweber, K. & Gaedke, U. 2017. Benthic carbon is inefficiently transferred in the food webs of two eutrophic shallow lakes. Freshwater Biology 62(10): 1693-1706.
• Scharnweber, K., Strandberg, U., Karlsson, K. & Eklöv, P. 2016. Decrease of Population Divergence in Eurasian Perch (Perca fluviatilis) in Browning Waters: Role of Fatty Acids and Foraging Efficiency. PLOSone 11(9): e0162470. doi:10.1371/journal.pone.0162470.
• Scharnweber, K., Strandberg, U. Marklund, M. H. K. & Eklöv, P. 2016. Combining resource use assessment techniques reveal trade-offs in trophic specialization of perch. Ecosphere 7(8): e01387. 10.1002/ecs2.1387.
• Syväranta, J., Scharnweber, K., Brauns, M. Hilt, S. & Mehner, T. 2016. Assessing the utility of hydrogen, carbon and nitrogen stable isotopes in estimating consumer allochthony in two shallow eutrophic lakes. PLOSone 11(5): e0155562. doi:10.1371/journal.pone.0155562.
• Mikolajewski, D., Scharnweber, K., Jiang, B., Leicht, S., Mauersberger, R. Johansson, F. & Rolff, J. 2016. Changing the habitat: the evolution of inter-correlated traits to escape from predators. Journal of Evolutionary Biology 29: 1394-1405.
• Mehner, T., Attermeyer, K., Brauns, M., Brothers, S., Diekmann, J., Gaedke, U., Grossart, H.-P., Köhler, J., Lischke, B., Meyer, N., Scharnweber, K., Syväranta, J., Vanni M. J. & Hilt, S. 2016. Weak response of animal allochthony and production to enhanced supply of terrestrial leaf litter in nutrient-rich lakes. Ecosystems 19: 311-325.
• Lischke, B., Weithoff, G., Wickham, S. A., Attermeyer, K., Grossart, H.-P., Scharnweber, K., Hilt, S. & Gaedke, U. 2016. Large biomass of small feeders: Ciliates may dominate herbivory in eutrophic lakes. Journal of Plankton Research 38 (1): 2-15.
• Tobler, M., Scharnweber, K., Greenway, R., Passow, C., Arias-Rodriguez, L., & García-De-León, F. 2015. Convergent changes in the trophic ecology of extremophile fish occurring along replicated environmental gradients. Freshwater Biology 60(4): 768-780.
• Hilt, S., Wanke, T., Scharnweber, K., Brauns, M., Syväranta, J., Brothers, S., Gaedke, U., Köhler, J., Lischke, B. & Mehner T. 2015. Contrasting response of two shallow eutrophic lakes to a partial winterkill of fish. Hydrobiologia 749(1): 31-42.
• Scharnweber, K., Vanni, M.J., Hilt, S., Diekmann, J., & Mehner, T. 2014. Boomerang ecosystem subsidies: Organic carbon inputs from land to lakes are returned to terrestrial food webs via aquatic insects. Oikos 123: 1439-1448.
• Brothers, S., Köhler, J., Attermeyer, K., Grossart, H-P., Mehner, T., Meyer, N., Scharnweber. K & Hilt, S. 2014. A feedback loop links brownification and anoxia in a temperate, shallow lake. Limnology and Oceanography 59(4): 1388-1398.
• Scharnweber, K., Syväranta, J., Hilt, S., Brauns, M., Vanni, M.J., Brothers, S., Köhler, J., Knežević-Jarić, J. & Mehner, T. 2014. Whole-lake experiments reveal the fate of terrestrial particulate organic carbon in benthic food webs of shallow lakes. Ecology 95 (6): 1496-1505.
• Brothers, S., Hilt, S., Attermeyer, K., Grossart, H-P., Kosten, S., Lischke, B., Mehner, T., Meyer, N., Scharnweber, K. & Köhler, J. 2013. A regime shift from macrophyte to phytoplankton dominance enhances carbon burial in a shallow, eutrophic lake. Ecosphere 4:11 DOI: 10.1890/ES13-00247.1.
• Scharnweber, K., Watanabe, K., Syväranta, J., Wanke, T., Monaghan, M.T. & Mehner, T. 2013. Effects of predation pressure and resource use on morphological divergence in omnivorous prey fish. BMC Evolutionary Biology 13:132, DOI: 10.1186/1471-2148-13-132.
• Scharnweber, K., Plath, M. & Tobler, M. 2011. Trophic niche segregation between the sexes in two species of livebearing fishes (Poeciliidae). Bulletin of Fish Biology 13:11-20.
• Scharnweber, K., Plath, M., Winemiller, K.O. & Tobler, M. 2011. Dietary niche overlap in sympatric asexual and sexual livebearing fishes (Poecilia spp.). Journal of Fish Biology 79:1760-1773.
• Scharnweber, K., Plath, M. & Tobler, M. 2011. Examination of boldness traits in sexual and asexual mollies (Poecilia latipinna, P. formosa). Acta Ethologica 14:77-83.
• Scharnweber, K., Plath, M. & Tobler, M. 2011. Feeding efficiency and food competition in coexisting sexual and asexual livebearing fishes of the genus Poecilia. Environmental Biology of Fishes 90:197-205.
• Riesch, R., Duwe, V., Herrmann, N., Padur, L., Ramm, A., Scharnweber, K., Schulte, M., Schulz-Mirbach, T., Ziege, M. & Plath, M. 2009. Variation along the shy-bold continuum in extremophile fishes (Poecilia mexicana, Poecilia sulphuraria). Behavioural Ecology and Sociobiology 63:1515-1526.
• Ziege, M., Padur, L., Duwe, V., Ramm, A., Scharnweber, K., Riesch, R. & Plath, M. 2008. Audience effect alters mate choice in male Heterophallus milleri (Poeciliidae). Bulletin of Fish Biology 10:87-92.