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Marcus Wallin

Marcus Wallin
I am Associated Professor in Environmental Analysis and my research is focused on the landscape carbon balance. Here we investigate how carbon is cycled and transported between soil, water and atmosphere, and how this cycling is affected by different anthropogenic pressures.


I am interested in the landscape carbon (C) balance and particular the influence of streams, lakes and coastal areas and their function as processors of C and as conduits for transferring C across the terrestrial/aquatic/atmosphere interfaces. Much of my research focus on 1) the terrestrial/aquatic hydrochemical connectivity and how it is affected by human disturbances. 2) aquatic/atmospheric interactions with focus on controls of the exchange of C between water and air.


I am course leader for Geology and Hydrology (Mv0226), 7.5 hp which is given within the bachelor programs in Biology and Environmental science, and Crop production. I have also teaching within the courses Natural resources for energy systems in a biogeochemical perspective (BI1360) and  Environmental Assessment (Mx0152).


Current projects

2022-2026, Sources and dynamics of greenhouse gases in agricultural streams (SAD-GAS) – a process-based approach for improved understanding of a large atmospheric source, Swedish Research Council (VR)

2020-2024, Wetland restoration and its effect on brownification of surface waters, Oskar and Lili Lamm foundation

2020-2023, Forest ditch cleaning and its effect on mobilization of an old soil carbon store, Swedish Research Council for the Environment (Formas)

Selected publications

Zannella, A., Eklöf, K., Lannergård, E., Laudon, H., Maher Hasselquist, E., Wallin, M. B., 2023, Metabolic processes control carbon dioxide dynamics in a boreal forest ditch affected by clear-cut forestry, Frontiers in Water, 5, 1250068, doi:10.3389/frwa.2023.1250068 

Stanley, E. H., Rocher-Ros, G., Loken, L., Oliver, S., Casson, N., Sponseller, R., Wallin, M. B., Zhang, L., GRiMeDB: The global river database of methane concentrations and atmospheric flux, Earth System Science Data, 15(7), 2879-2926, doi:10.5194/essd-15-2879-2023

Rehn, L., Sponseller, R., Laudon, H., Wallin, M. B. 2023, Long-term changes in dissolved inorganic carbon across boreal streams caused by altered hydrology, Limnology & Oceanography, 68 (2), 409-423, doi:10.1002/lno.12282

Wallin, M.B., Audet, J., Peacock, M., Sahlée, E., Winterdahl, M., 2020, Carbon dioxide dynamics in an agricultural headwater stream driven by hydrology and primary production. Biogeosciences. 17, 2487-2498, doi:10.5194/bg-2019-486

Campeau, A., Bishop, K., Amvrosiadi, N., Billett, M. F., Garnett M. H., Laudon, H., Öquist, M.G., Wallin, M. B., 2019, Current forest carbon fixation fuels stream CO2 emissions, Nature Communications, 10, 1876, doi:10.1038/s41467-019-09922-3

Wallin, M. B., Campeau, A., Audet, J., Bastviken, D., Bishop, K., Kokic, J., Laudon, H., Lundin, E., Löfgren, S., Natchimuthu, S., Sobek, S., Teutschbein, C., Weyhenmeyer, G., Grabs, T., 2018, Carbon dioxide and methane emissions of Swedish low-order streams – a national estimate and lessons learnt from more than a decade of observations, Limnology and Oceanography – Letters, 3 (3), 156-167, doi:10.1002/lol2.10061

Campeau, A., Bishop K., Billett, M. F., Garnett, M. H., Laudon, H., Leach, J. A., Nilsson, M. B., Öquist, M. G., Wallin, M. B., 2017. Aquatic export of young dissolved and gaseous carbon from a pristine boreal fen: implications for peat carbon stock stability, Global Change Biology, 23 (12), 5523-5536, doi:10.1111/gcb.13815  

Weyhenmeyer, G. A., Kosten, S., Wallin, M. B., Tranvik, L. J., Jeppesen, E., Roland, F., 2015. Significant fraction of CO2 emissions from boreal lakes derived from hydrologic inorganic carbon inputs, Nature – Geoscience, 8(12), 933-936, doi:10.1038/ngeo2582

Wallin, M. B., Löfgren, S., Erlandsson, M., Bishop, K. 2014. Representative regional sampling of carbon dioxide and methane concentrations in hemiboreal headwater streams reveal underestimates in less systematic approaches, Global Biogeochemical Cycles, 28(4), 465-479, doi: 10.1002/2013GB004715

Wallin, M. B., Grabs, T., Buffam, I., Laudon, H., Ågren, A., Öquist, M. G., Bishop, K. 2013. Evasion of CO2 from streams – The dominant component of the carbon export through the aquatic conduit in a boreal catchment, Global Change Biology, 19(3), 785-797, doi:10.1111/gcb.12083.

Publications list: