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Mats Öquist

Mats Öquist
I carry out research and teaching in the fields of soil science and environmental biogeochemistry, and am primarily interested in how microorganisms in the environment are involved in the cycling of carbon and nitrogen in forests and wetlands. A central part of this research is linked to the production and consumption of atmospheric greenhouse gases, with special emphasis on biogeochemical processes at low temperatures. The scale at which I address these issues range from the molecular level to whole ecosystems. I am also interested in how different forest management regimes, e.g. forest fertilization, influence the exchange of carbon and greenhouse gases between ecosystems and the atmosphere. I am Deputy Head of Department and I am also the Director of the analytical infrastructure SLU Stable Isotope Laboratory (SSIL)

Selected publications

Selected publications

2024

Ågren, A. M., Anderson, O., Lidberg, W., Öquist, M., and E. M. Hasselquist (2024) Ditches show systematic impacts on soil and vegetation properties across the Swedish forest landscape. Forest Ecology and Management, 555, 121707, https://doi.org/10.1016/j.foreco.2024.121707

Ehnvall, B., Ratcliffe, J. L., Nilsson, M. B., Öquist, M. G., Sponseller, R. A. & Grabs, T. 2024. Topography and time shape mire morphometry and large-scale mire distribution patterns in the northern boreal landscape. Journal of Geophysical Research – Earth Surface, 129, e2023JF007324, https://doi.org/10.1029/2023JF007324.

Öquist, M. G., Hongxing, H., Bortolazzi, A., Nilsson, M.B., Rodeghiero, M., Tognetti, R., Ventura, M. & Egnell, G. 2024. Nitrogen fertilization increases N2O emission but does not offset the reduced radiative forcing caused by the increased carbon uptake in boreal forests, Forest Ecology and Management, 556, https://doi.org/10.1016/j.foreco.2024.121739.

Peura, S., Saetre, P., Ehnvall, B., Nilsson, M. B. & Öquist, M. Plant functional type and species determine elemental concentrations in boreal mire vegetation. Heliyon, https://doi.org/10.1016/j.heliyon.2024.e38925. .

Klaus, M., Öquist, M. & Machacova, K. 2024. Tree stem-atmosphere greenhouse gas fluxes in a boreal riparian forest, Science of the Total Environment, 954, https://doi.org/10.1016/j.scitotenv.2024.176243.

Thirunavukkarasu, A.,  Hedenström, M., Sparrman, T., Nilsson, M. B., Jürgen Schleucher, J. & Öquist, M. 2024. Unraveling the dynamics of lignin chemistry on decomposition to understand its contribution to soil organic matter accumulation, Plant and Soil, doi: 10.1007/s11104-024-07066-y.

2023

Ehnvall, B., Ratcliffe, J. L., Bohlin, E., Nilsson, M. B., Öquist, M. G., Sponseller, R. A. & Grabs, T. 2023. Landscape constraints on mire lateral expansion. Quaternary Science Reviews, 302, 107961. Doi: 

Noumonvi, K. D., Ågren, A. M., Ratcliffe, J. L., Öquist, M. G., Ericson, L., Tong, C. H. M., Järveoja, J., Zhu, W., Ostervalder, S., Peng, H., Erefur, C., Bishop, K., Laudon, H., Nilsson, M. B., & Peichl, M. 2023. The Kulbäcksliden research infrastructure: a unique setting for northern peatland studies. Frontiers in Earth Science, 11:1194749. Doi: 10.3389/feart.2023.11.94749.

Ehnvall, B., Agren, A., Nilsson, M. B., Ratcliffe, J. L., Noumonvi, K. D., Peichl, M., Lidberg, W., Giesler, R., Mörth, C-M. & Öquist, M. G. 2023. Catchment characteristics control boreal mire nutrient regime and vegetation patterns over ~ 5 000 years of landscape development. Science of the Total Environment, 895. http://dx.doi.org/10.1016/j.scitotenv.2023.165132.

2022

Smeds, J., Öquist M.G., Nilsson, M.B. & Bishop, K. 2022. A simplified drying procedure for analyzing Hg concentrations. Water, Air and Soil Pollution, 233, 216, https://doi.org/10.1007/s11270-022-05678-7.

2021

Kunfu Pi, Magdalena Bieroza, Anatoli Brouchkov, Weitao Chen, Louis Dufour, Konstantin Gongalsky, Anke Herrmann, Eveline Krab, Catherine Landesman, Anniet Laverman, Natalia Mazei, Yuri Mazei, Mats Öquist, Sergey Pozdniakov, Fereidoun Rezanezhad, Céline Roose-Amsaleg, Anastasia Shatilovich, Andong Shi, Christina Smeaton, Lei Tong, Andrey Tsyganov, and Philippe Van Cappellen. 2021. The cold region critical zone in transition: responses to climate warming and land use change, Annual Reviews of Environmental Resources, https://doi.org/10.1146/annurev-environ-012220-12570.

Grau-Andrés, R., Pingree, M.R.A., Öquist, M.G., Wardle, D.A.y, Nilsson, M-C., Gundale, M.J. 2021. Biochar increases tree biomass in a managed boreal forest, but does not alter N2O, CH4, and CO2 emissions. Global Change Biology – Bioenergy, doi: 10.1111/gcbb.12864

Marshall, J., Peichl, M., Tarvainen, L., Lundmark, T., Näsholm, T., Öquist, M. G. & Linder, S. A carbon-budget approach shows that reduced decomposition causes the nitrogen-induced increase in soil carbon in a boreal forest, Forest Ecology and Management (accepted).

2020

Audet, J., Bastviken, D., Bundschuh, M., Buffam, I., Feckler, A., Klemedtsson, L., Laudon, H., Löfgren, S., Natchimuthu, S., Öquist, M. G., Peacock, M. &Wallin, M. B. 2020. Forest streams are important sources for nitrous oxide emissions, Global Change Biology, 2, 629-641, doi: 10.1111/gcb.14812.

2019

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, art. no. 1876, doi: 10.1038/s41467-019-09922-3.

Segura, J., Nilsson, M. B., Haei, M., Sparrman, T., Serk, H., Schleucher, J., Tolu, J., & Öquist, M. G. 2019. Boreal tree species affect soil organic matter composition and saprotrophic mineralization rates, Plant and Soil, 441, 173-190, doi: 10.1007/s11104-019-04105-x..

Segura, J., Nilsson, M. B., Schleucher, J., Haei, M., Sparrman, T., Székely, A., Bertilsson, S. & Öquist, M. G. 2019. Microbial utilization of simple carbon substrates in boreal peatland soils at low temperatures, Soil Biology and Biochemistry, 135, 438-448, doi: 10.1016/j.soilbio.2019.06.006.

2018

Campeau, A., Bishop, K., Klemedtsson, L., Laudon, H., Leith, F. I., Öquist, M. G. & Wallin, M. B. 2018. Stable carbon isotopes reveal soil-stream DIC linkages in contrasting headwater streams, Journal of Geophysical Research, Biogeosciences, doi: 10.1002/2017JG004083.

Skov-Nielsen, C., Hasselquist, N., Nilsson, M. B., Öquist, M. G., Järveoja, J. & Peichl, M. 2018. A novel approach for figh-frequency in-situ quantification of methane oxidation in peatlands, Soil Systems, 3, 4, doi:10.3390/soilsystems3010004.

2017

Segura, J., Nilsson, M. B., Haei, M., Sparrman, T., Mikkola, J-P., Schleucher, J. & Öquist, M. G. 2017. Microbial mineralization of cellulose in frozen soils, Nature Communications, 8, art. No. 1154, doi:10.1038/s41467-017-01230-y.

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

Soucemarianadin, L, Erhagen, B. Nilsson, M. Öquist M. G. & Schleucher, J. 2017. Two-dimensional NMR spectroscopy strongly enhances soil organic matter composition analysis, Organic Geochemistry, 113, 184-195.

2016

Zhao, J., Peichl, M., Öquist, M. G. & Nilsson, M. 2016. Gross primary production controls winter CO2 exchange in a boreal peatland, Global Change Biology, doi:10.1111/gcb.133308.

Georg Jocher, G., Ottosson Löfvenius, M., De Simon, G., Hörnlund, T., Linder, S., Lundmark, T., Marshall, J., Nilsson, M. B., Näsholm, T., Tarvainen, L, Öquist, M. G., & Peichl, M. 2016. Apparent winter CO2 uptake by a boreal forest due to decoupling, Agricultural and Forest Meteorology, 232 23-34.

Winterdahl, M., Wallin, M., Heuseb Karlsen, R., Laudon, H., Öquist, M. G. & Lyon, S. 2016. De-coupling of carbon dioxide and dissolved organic carbon in boreal headwater streams, Journal of Geophysical Research-Biogeosciences, 121, doi:101002/2016JG003420.

Öquist, M. G., Erhagen, B., Haei, M., Sparrman, T., Ilstedt, U., Schleucher, J. & Nilsson, M.B. 2016. The effect of temperature and substrate quality on the carbon use efficiency of saprotrophic decomposition, Plant and Soil.

2015

Leith, F. I., Dinsmore, K. J., Wallin, M. B., Billett, M. F., Heal, K. V., Laudon, H., Öquist, M. G. & Bishop, K. 2015. Carbon dioxide transport across the hillslope-riparian-stream continuum in a boreal headwater catchment. Biogeosciences, 12, 1881-1892, doi: 10.519/bg-12-1881-2015.

2014

Peichl, M., Öquist, M. G., Ottosson-Löfvenius, M., Ilstedt, U., Sagerfors, J., Grelle, A., Lindroth, A., Nilsson, M. 2014. A 12-year record reveals pre-growing season temperature and water table level threshold effects on the net carbon dioxide uptake in a boreal fen. Environmental Research Letters, 9, doi:10.1088/1748-9326/9/055006.

Öquist, M. G., Bishop, K., Grelle, A., Klemedtsson, L., Kohler, S., Laudon, H., Lindroth, A., Ottosson-Löfvenius, M., Wallin, M. B. & Nilsson, M. N. 2014. The full annual carbon balance of boreal forests is highly sensitive to precipitation. Environmental Science & Technology Letters, 1, 315-319, doi:10.1021/ez500169j.4

2013

Haei, M., Öquist, M. G., Kreyling, J. & Laudon, H. 2013. Winter climate controls soil carbon dynamics during summer in boreal forests. Environmental Research Letters, 8, doi:10.1088/1748-9326/8/2/024017

Erhagen, B., Öquist M. G., Sparrman, T., Haei, M., Ilstedt, U., Hedenstrom, M., Schleucher, J. & Nilsson, M. 2013 Temperature response of litter and soil organic matter decomposition is determined by chemical composition of organic material, Global Change Biology, 19, 3858-3871, doi:10.1111/gcb.12342.

2012

Wallin, M., Grabs, T., Buffam, I., Laudon, H., Ågren, A., Öquist, M. & Bishop, K. 2012. Evasion of CO2 from streams - The dominant component of the carbon export through the aquatic conduit in a boreal landscape. Global Change Biology, doi: 10.1111/gcb.12083.

2011

Brooks, P., Groffman, P., Grogan, P., Öquist, M. G., Schimel, J., Templer, P. H. 2011. Biogeochemistry of Seasonally snow covered soils, Geography Compass, 5/9, 682-699, doi: 10.1111/j.1749-8198.2011.00420.x.

Wallin, M., Öquist, M. G., Buffam, I., Billet, M. & Bishop, K. 2011. Spatiotemporal variability of the gas transfer coefficient (KCO2) in boreal streams; implications for large scale estimates of CO2 evasion. Global Biogeochemical Cycles, 25, GB3025, doi:10.1029/2010GB003975.

Haei, M., Rousk, J., Ilstedt, U., Öquist, M.G., Bååth, E. & Laudon, H.2011. Effects of soil frost on growth, composition and respiration of the soil microbial decomposer community. Soil Biology & Biochemistry, 43, 2069-2077. Doi: 10.1016/j_soilbio.2011.06.005.

2010

Eriksson, T., Öquist, M. G. & Nilsson, M. 2010. Production and oxidation of methane in a boreal mire after a decade of increased temperature and nitrogen and sulfur deposition. Global Change Biology,16, 2130-2144, doi: 10.1111/j.1365-2486.2009.02097.x.

Wallin, M., Buffam, I., Öquist, M. G., Laudon, H. & Bishop, K. 2010. Temporal and spatial variability of dissolved inorganic carbon in a boreal stream network – concentrations and downstream fluxes. Journal of Geophysical Research, 115, G02014, doi:10.1029/2009JG001100.

Harrysson Drotz, S., Sparrman, T., Schleucher, J., Nilsson, M. & Öquist, M. G. 2010. Effects of soil organic matter composition on unfrozen water content and heterotrophic CO2 production of frozen soils, Geochimica et Cosmochimica Acta, 47, 2281-2290, doi: 10.1016/j.gca.2010.01.026.

Haei, M., Öquist, M. G., Buffam, I., Ågren, A., Blomkvist, P., Bishop, K., Ottosson-Lofenius, M. & Laudon, H. 2010. Cold winter soils enhance dissolved organic carbon in stream water, Geophysical Research Letters, 37, Art. No. L08501, doi: 10.1029/2010GL042821.

Tilston, E. L., Sparrman, T. & Öquist, M. G. 2010. Unfrozen water content moderates temperature dependence of sub-zero microbial respiration, Soil Biology & Biochemistry 42, 1396-1407, doi:10.1016/j.soilbio.2010.04.018.

Eriksson, T., Öquist, M. G. & Nilsson, M. 2010. Effects of decadal deposition of nitrogen and sulfur, and increased temperature, on methane emissions from a boreal peatland, Journal of Geophysical Research, 115, G04036, doi:10.1029/2010JG001285.

Haei, M., Öquist, M. G., Ilstedt, U. & Laudon, H. 2010.  The influence of soil frost on the quality of dissolved organic carbon in a boreal forest soil – combining field-scale and laboratory experiments. Biogeochemistry, Doi: 10.1007/s10533-010-9534-2.

Harrysson Drotz, S., Sparrman, T., Nilsson, M., Schleucher, J. & Öquist, M. G. 2010. Microbial activity in frozen boreal forest soils - Both catabolic and anabolic processes proceed under frozen conditions. Proceedings of the National Academy of Sciences of the United States of America, doi: 10.1073/pnas.1008885107.

2009

Öquist, M. G. 2009. Contributions of matric and osmotic potentials to the unfrozen water content of frozen soils, Geoderma, 148, 392-398.

Öquist, M. G., Sparrman, T., Harryson Drotz, S., Klemedtsson, L., Grip, H., Schleucher, J. & Nilsson, M. 2009. Water availability controls microbial temperature response in frozen soil CO2 production, Global Change Biology, 15, 2715-2722, doi: 10.1111/j.1365-2486.2009.01898.x.

Öquist, M. G., Wallin, M., Seibert, J., Bishop, K., & Laudon, H. 2009. DIC export across the soil/stream interface and its fate in a boreal headwater stream. Environmental Science & Technology, 43, 7364-7369, doi: 10.1021/es900416h.

Maljanen, M., Virkajärvi,  P., Hytönen, J., Öquist, M. G., Sparrman, T. & Martikainen, P. J. 2009. Nitrous oxide production in boreal soils with variable organic matter content at low temperature – snow manipulation experiment, Biogeosciences, 6, 2461-2473.

Nilsson, M. & Öquist, M. G. 2009. Partitioning litter mass loss into carbon dioxide and methane in peatland ecosystems. In: Northern Peatlands and Carbon Cycling (Ed.  Baird A.J. et al.), Geophysical Monograph Series, 184, 131-144.

 


Contact

Researcher at the Department of Forest Ecology and Management; Department of Forest Ecology and Management, joint staff
Telephone: +46907868525, +46705540361
Postal address:
SLU,
Skogens ekologi och skötsel
901 83 Umeå
Visiting address: Skogsmarksgränd 17, Umeå