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Staff photo Ryan Sponseller

Ryan Sponseller

Research qualifications: Docent

Contact

E-mail
ryan.sponseller@umu.se
Phone
+46 90 786 65 50

Works as

Affiliation
Professor at Department of Ecology, Environment and Geoscience Role: Director of studies
Location
KBC-Fysiologihuset, Linnaeus väg 6, Umeå, A4 24 15 Umeå universitet, 901 87 Umeå
Biogeochemical response to drying-rewetting in riparian soils influences carbon mobilization
Soil Biology and Biochemistry, Elsevier 2026, Vol. 212
Škerlep, Martin; Reidy, Melissa; Laudon, Hjalmar; et al.
Carbon and nutrient solubility in live and dead Betula pubescens leaves across a boreal retrogressive chronosequence
Oikos, John Wiley & Sons 2025, Vol. 2025, (5)
Berg, Noomi; Jonsson, Micael; Sponseller, Ryan A.; et al.
Does dissolved organic matter composition help explain the concentrations of bioavailable macronutrients in organic matter-rich freshwaters?
Freshwater Biology, John Wiley & Sons 2025, Vol. 70, (11)
Berggren, Martin; Rulli, Mayra P. D.; Bergström, Ann-Kristin; et al.
Short-term changes in ecosystem functioning after a wildfire in a tropical headwater stream
Freshwater Science, University of Chicago Press 2025, Vol. 44, (2) : 125-142
Finkler, Nícolas R.; Ferreira, Murilo S.; Bega, Joao M. M.; et al.
The riparian zone controls headwater hydrology and biogeochemistry, doesn't it? reassessing linkages across European ecoregions
Global Biogeochemical Cycles, John Wiley & Sons 2025, Vol. 39, (2)
Ledesma, José L. J.; Musolff, Andreas; Sponseller, Ryan A.; et al.
Rebalancing river lateral connectivity: an interdisciplinary focus for research and management
WIREs Water, John Wiley & Sons 2025, Vol. 12, (1)
Mason, Richard; Johnson, Matthew F.; Wohl, Ellen; et al.
Cumulative and discrete effects of forest harvest and drainage on the hydrological regime and nutrient dynamics in boreal catchments
Forest Ecology and Management, Vol. 585
Mosquera, Virginia; Laudon, Hjalmar; Karimi, Shirin; et al.
Riparian zone heterogeneity influences the amount and fate of biodegradable dissolved organic carbon at the land-water interface
Journal of Geophysical Research - Biogeosciences, American Geophysical Union (AGU) 2025, Vol. 130, (5)
Reidy, Melissa; Berggren, Martin; Lupon, Anna; et al.
Biogeochemical patterns vary with hydrogeomorphology in riparian soils along a boreal headwater stream
Freshwater Science, University of Chicago Press 2025, Vol. 44, (1) : 61-75
Reidy, Melissa; Buckley, Scott; Jamtgard, Sandra; et al.
Emerging patterns of CO2: O2 dynamics in rivers and their link to ecosystem carbon processing
Limnology and Oceanography Letters, John Wiley & Sons 2025, Vol. 10, (6) : 835-850
Rocher-Ros, Gerard; Gomez-Gener, Lluís; Jativa, Carolina; et al.
Nutrient, carbon, and darkening impacts on coastal dissolved phosphorus bioavailability: a mesocosm study
Limnology and Oceanography
Rulli, Mayra P.D.; Garnier, Aurélie; Huss, Magnus; et al.
Patterns and controls of rare earth element (REE) dynamics across a boreal stream network
Water Research, Elsevier 2025, Vol. 276
Škerlep, Martin; Laudon, Hjalmar; Lidman, Fredrik; et al.
Topography and time shape mire morphometry and large-scale mire distribution patterns in the northern boreal landscape
Journal of Geophysical Research - Earth Surface, American Geophysical Union (AGU) 2024, Vol. 129, (2)
Ehnvall, B.; Ratcliffe, J.L.; Nilsson, M.B.; et al.
Several mechanisms drive the heterogeneity in browning across a boreal stream network
Water resources research, John Wiley & Sons 2024, Vol. 60, (11)
Zhu, Xudan; Berninger, Frank; Chen, Liang; et al.
Nutrient limitation masks the dissolved organic matter composition effects on bacterial metabolism in unproductive freshwaters
Limnology and Oceanography, John Wiley & Sons 2023, Vol. 68, (9) : 2059-2069
Berggren, Martin; Ye, Linlin; Sponseller, Ryan A.; et al.
Landscape constraints on mire lateral expansion
Quaternary Science Reviews, Elsevier 2023, Vol. 302
Ehnvall, Betty; Ratcliffe, Joshua L.; Bohlin, Elisabet; et al.
Groundwater-stream connections shape the spatial pattern and rates of aquatic metabolism
Limnology and Oceanography Letters, John Wiley & Sons 2023, Vol. 8, (2) : 350-358
Lupon, Anna; Gómez-Gener, Lluís; Fork, Megan L.; et al.
A long-established invasive species alters the functioning of benthic biofilms in lakes
Freshwater Biology, John Wiley & Sons 2023, Vol. 68, (12) : 2068-2083
McKie, Brendan G.; Tattersdill, Kristina; Ecke, Frauke; et al.
Cascading, interactive, and indirect effects of climate change on aquatic communities, habitats, and ecosystems
Limnology and Oceanography, John Wiley & Sons 2023, Vol. 68, (S1) : S1-S7
Menden-Deuer, Susanne; Mullarney, Julia C.; Boersma, Maarten; et al.
Concentration-discharge patterns reveal catchment controls over the stoichiometry of carbon and nutrient supply to boreal streams
Journal of Geophysical Research - Biogeosciences, American Geophysical Union (AGU) 2023, Vol. 128, (8)
Mosquera, Virginia; Laudon, Hjalmar; Blackburn, Meredith; et al.
Long-term changes in dissolved inorganic carbon across boreal streams caused by altered hydrology
Limnology and Oceanography, John Wiley & Sons 2023, Vol. 68, (2) : 409-423
Rehn, Lukas; Sponseller, Ryan A.; Laudon, Hjalmar; et al.
Global methane emissions from rivers and streams
Nature, Springer Nature 2023, Vol. 621, (7979) : 530-535
Rocher-Ros, Gerard; Stanley, Emily H.; Loken, Luke C.; et al.
GRiMeDB: the global river methane database of concentrations and fluxes
Earth System Science Data, Copernicus Publications 2023, Vol. 15, (7) : 2879-2926
Stanley, Emily H.; Loken, Luke C.; Casson, Nora J.; et al.
Controls on terrestrial carbon fluxes in simulated networks of connected streams and lakes
Global Biogeochemical Cycles, John Wiley & Sons 2023, Vol. 37, (3)
Vachon, Dominic; Sponseller, Ryan A.; Rosvall, Martin; et al.
Differential trends in iron concentrations of boreal streams linked to catchment characteristics
Global Biogeochemical Cycles, John Wiley & Sons 2023, Vol. 37, (3)
Škerlep, Martin; Nehzati, S.; Sponseller, Ryan A.; et al.
Seasonal variation in the coupling of microbial activity and leaf litter decomposition in a boreal stream network
Freshwater Biology, John Wiley & Sons 2022, Vol. 67, (5) : 812-827
Bastias, Elliot; Sponseller, Ryan A.; Bundschuh, Mirco; et al.
Global patterns and controls of nutrient immobilization on decomposing cellulose in riverine ecosystems
Global Biogeochemical Cycles, John Wiley & Sons 2022, Vol. 36, (3)
Costello, David M.; Tiegs, Scott D.; Boyero, Luz; et al.
Emerging technology can guide ecosystem restoration for future water security
Hydrological Processes, John Wiley & Sons 2022, Vol. 36, (10)
Laudon, Hjalmar; Lidberg, William; Sponseller, Ryan A.; et al.
Co-occurrence of browning and oligotrophication in a boreal stream network
Limnology and Oceanography, John Wiley & Sons 2022, Vol. 67, (10) : 2325-2339
Mosquera, Virginia; Maher Hasselquist, Eliza; Sponseller, Ryan A.; et al.
Resolving the Drivers of Algal Nutrient Limitation from Boreal to Arctic Lakes and Streams
Ecosystems (New York. Print), Springer-Verlag New York 2022, Vol. 25 : 1682-1699
Myrstener, Maria; Fork, Megan L.; Bergström, Ann-Kristin; et al.
Landscape determinants of pelagic and benthic primary production in northern lakes
Global Change Biology, John Wiley & Sons 2022, Vol. 28, (23) : 7063-7077
Puts, Isolde C.; Ask, Jenny; Siewert, Matthias B.; et al.
Seasonal patterns in nutrient bioavailability in boreal headwater streams
Limnology and Oceanography, John Wiley & Sons 2022, Vol. 67, (5) : 1169-1183
Rulli, Mayra P. D.; Bergström, Ann-Kristin; Sponseller, Ryan A.; et al.
The emerging role of drought as a regulator of dissolved organic carbon in boreal landscapes
Nature Communications, Nature Publishing Group 2022, Vol. 13, (1)
Tiwari, Tejshree; Sponseller, Ryan A.; Laudon, Hjalmar
Responses of multiple structural and functional indicators along three contrasting disturbance gradients
Ecological Indicators, Elsevier 2022, Vol. 135
Truchy, Amélie; Sponseller, Ryan A.; Ecke, Frauke; et al.
Interactive effects of light and nutrients on stream algal growth modified by forest management in boreal landscapes
Forest Ecology and Management, Elsevier 2021, Vol. 492
Burrows, Ryan M.; Jonsson, Micael; Fältström, Emma; et al.
Integrating Discharge-Concentration Dynamics Across Carbon Forms in a Boreal Landscape
Water resources research, John Wiley & Sons 2021, Vol. 57, (8)
Gómez-Gener, Lluís; Hotchkiss, Erin R.; Laudon, Hjalmar; et al.
Global carbon dioxide efflux from rivers enhanced by high nocturnal emissions
Nature Geoscience, Nature Publishing Group 2021, Vol. 14, (5) : 289-294
Gómez-Gener, Lluís; Rocher-Ros, Gerard; Battin, Tom; et al.
Moving towards multi-layered, mixed-species forests in riparian buffers will enhance their long-term function in boreal landscapes
Forest Ecology and Management, Elsevier 2021, Vol. 493
Hasselquist, Eliza Maher; Kuglerová, Lenka; Sjögren, Jörgen; et al.
The role of macroinvertebrates on plant litter decomposition in streams
The ecology of plant litter decomposition in stream ecosystems, Springer 2021 : 193-216
Jonsson, Micael; Sponseller, Ryan A.
Multiple stressors in small streams in the forestry context of Fennoscandia: The effects in time and space
Science of the Total Environment, Elsevier 2021, Vol. 756
Kuglerova, Lenka; Hasselquist, Eliza Maher; Sponseller, Ryan Allen; et al.
Northern landscapes in transition: Evidence, approach and ways forward using the Krycklan Catchment Study
Hydrological Processes, John Wiley & Sons 2021, Vol. 35, (4)
Laudon, Hjalmar; Hasselquist, Eliza Maher; Peichl, Matthias; et al.
From legacy effects of acid deposition in boreal streams to future environmental threats
Environmental Research Letters, Institute of Physics (IOP) 2021, Vol. 16, (1)
Laudon, Hjalmar; Sponseller, Ryan A.; Bishop, Kevin
Nutrients influence seasonal metabolic patterns and total productivity of Arctic streams
Limnology and Oceanography, John Wiley & Sons 2021, Vol. 66, (S1) : S182-S196
Myrstener, Maria; Gómez-Gener, Lluís; Rocher-Ros, Gerard; et al.
Nitrogen supply and physical disturbance shapes Arctic stream nitrogen uptake through effects on metabolic activity
Freshwater Biology, John Wiley & Sons 2021, Vol. 66, (8) : 1502-1514
Myrstener, Maria; Thomas, Steven A.; Giesler, Reiner; et al.
Metabolism overrides photo-oxidation in CO2 dynamics of Arctic permafrost streams
Limnology and Oceanography, John Wiley & Sons 2021, Vol. 66, (S1) : S169-S181
Rocher-Ros, Gerard; Harms, Tamara K.; Sponseller, Ryan A.; et al.
Stochastic processes and ecological connectivity drive stream invertebrate community responses to short-term drought
Journal of Animal Ecology, John Wiley & Sons 2021, Vol. 90, (4) : 886-898
Sarremejane, Romainyuuii; Truchy, Amelie; McKie, Brendan G.; et al.
Integrating carbon emission, accumulation and transport in inland waters to understand their role in the global carbon cycle
Global Change Biology, John Wiley & Sons 2021, Vol. 27, (4) : 719-727
Vachon, Dominic; Sponseller, Ryan A.; Karlsson, Jan
Water and nitrogen shape winter annual plant diversity and community composition in near-urban Sonoran Desert preserves
Ecological Monographs, Ecological Society of America (esa) 2021, Vol. 91, (3)
Wheeler, Megan M.; Collins, Scott L.; Grimm, Nancy B.; et al.
Heterogeneous CO2 and CH4 patterns across space and time in a small boreal lake
Inland Waters, Taylor & Francis 2020, Vol. 10, (3) : 348-359
Denfeld, Blaize A.; Lupon, Anna; Sponseller, Ryan A.; et al.
Particles and Aeration at Mire-Stream Interfaces Cause Selective Removal and Modification of Dissolved Organic Matter
Journal of Geophysical Research - Biogeosciences, American Geophysical Union (AGU) 2020, Vol. 125, (12)
Einarsdottir, Karolina; Attermeyer, Katrin; Hawkes, Jeffrey A.; et al.
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