Articles | Volume 18, issue 10
https://doi.org/10.5194/bg-18-3029-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-18-3029-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
20 May 2021
Research article |
| 20 May 2021
| 20 May 2021
Rain-fed streams dilute inorganic nutrients but subsidise organic-matter-associated nutrients in coastal waters of the northeast Pacific Ocean
Kyra A. St. Pierre
CORRESPONDING AUTHOR
Hakai Institute, Tula Foundation, Heriot Bay, BC, V0P 1H0, Canada
Institute for the Oceans and Fisheries, University of British
Columbia, Vancouver, BC, V6T 1Z4, Canada
Brian P. V. Hunt
Hakai Institute, Tula Foundation, Heriot Bay, BC, V0P 1H0, Canada
Institute for the Oceans and Fisheries, University of British
Columbia, Vancouver, BC, V6T 1Z4, Canada
Department of Earth, Ocean and Atmospheric Sciences, University of
British Columbia, Vancouver, BC, V6T 1Z4, Canada
Suzanne E. Tank
Hakai Institute, Tula Foundation, Heriot Bay, BC, V0P 1H0, Canada
Department of Biological Sciences, University of Alberta, Edmonton, AB,
T6G 2E9, Canada
Ian Giesbrecht
Hakai Institute, Tula Foundation, Heriot Bay, BC, V0P 1H0, Canada
School of Resource and Environmental Management, Simon Fraser
University, Burnaby, BC, V5A 1S6, Canada
Maartje C. Korver
Hakai Institute, Tula Foundation, Heriot Bay, BC, V0P 1H0, Canada
current address: Department of Geography, McGill University, Montréal, QC, H3A
0B9, Canada
William C. Floyd
Ministry of Forests, Lands and Natural Resource Operations, Nanaimo,
BC, V9T 6E9, Canada
Vancouver Island University, Nanaimo, BC, V9R 5S5, Canada
Allison A. Oliver
Hakai Institute, Tula Foundation, Heriot Bay, BC, V0P 1H0, Canada
Department of Biological Sciences, University of Alberta, Edmonton, AB,
T6G 2E9, Canada
current address: Skeena Fisheries Commission, Kispiox, BC, V0J 1Y4, Canada
Kenneth P. Lertzman
Hakai Institute, Tula Foundation, Heriot Bay, BC, V0P 1H0, Canada
School of Resource and Environmental Management, Simon Fraser
University, Burnaby, BC, V5A 1S6, Canada
Related authors
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Earth Syst. Sci. Data Discuss., https://doi.org/10.5194/essd-2025-585, https://doi.org/10.5194/essd-2025-585, 2025
Preprint under review for ESSD
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This dataset includes monthly measurements of carbon dioxide and methane exchange between land, water, and the atmosphere from over 1,000 sites in Arctic and boreal regions. It combines measurements from a variety of ecosystems, including wetlands, forests, tundra, lakes, and rivers, gathered by over 260 researchers from 1984–2024. This dataset can be used to improve and reduce uncertainty in carbon budgets in order to strengthen our understanding of climate feedbacks in a warming world.
Jessica A. Serbu, Suzanne E. Tank, Bernhard Peucker-Ehrenbrink, Xiying Sun, Craig A. Emmerton, and Vincent L. St. Louis
EGUsphere, https://doi.org/10.5194/egusphere-2025-5020, https://doi.org/10.5194/egusphere-2025-5020, 2025
This preprint is open for discussion and under review for Biogeosciences (BG).
Short summary
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In water, CO2 can chemically react with (i.e., weather) fine sediment produced as glaciers abrade bedrock. Studying three glacier-fed rivers in the Canadian Rockies across multiple seasons, we found that near glaciers, rivers consumed CO2 mainly via carbonate weathering. Importance of silicate weathering and organic matter decomposition as drivers of CO2 cycling increased downriver. As glaciers retreat, subsequent shifts in river biogeochemistry will affect regional and global carbon budgets.
Hayley F. Drapeau, Suzanne E. Tank, Maria A. Cavaco, Jessica A. Serbu, Vincent L. St. Louis, and Maya P. Bhatia
Biogeosciences, 22, 1369–1391, https://doi.org/10.5194/bg-22-1369-2025, https://doi.org/10.5194/bg-22-1369-2025, 2025
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From glacial headwaters to 100 km downstream, we found clear organic matter gradients in Canadian Rocky Mountain rivers. In contrast, microbial communities exhibited overall cohesion, indicating that species dispersal may be an over-riding control on community dynamics in these connected rivers. Identification of glacial-specific microbes suggests that glaciers seed headwater microbial assemblages; these findings show the importance of glacial waters and microbiomes in changing mountain systems.
Krysten Rutherford, Laura Bianucci, and William Floyd
Geosci. Model Dev., 17, 6083–6104, https://doi.org/10.5194/gmd-17-6083-2024, https://doi.org/10.5194/gmd-17-6083-2024, 2024
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Nearshore ocean models often lack complete information about freshwater fluxes due to numerous ungauged rivers and streams. We tested a simple rain-based hydrological model as inputs into an ocean model of Quatsino Sound, Canada, with the aim of improving the representation of the land–ocean connection in the nearshore model. Through multiple tests, we found that the performance of the ocean model improved when providing 60 % or more of the freshwater inputs from the simple runoff model.
Laura Bianucci, Jennifer M. Jackson, Susan E. Allen, Maxim V. Krassovski, Ian J. W. Giesbrecht, and Wendy C. Callendar
Ocean Sci., 20, 293–306, https://doi.org/10.5194/os-20-293-2024, https://doi.org/10.5194/os-20-293-2024, 2024
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While the deeper waters in the coastal ocean show signs of climate-change-induced warming and deoxygenation, some fjords can keep cool and oxygenated waters in the subsurface. We use a model to investigate how these subsurface waters created during winter can linger all summer in Bute Inlet, Canada. We found two main mechanisms that make this fjord retentive: the typical slow subsurface circulation in such a deep, long fjord and the further speed reduction when the cold waters are present.
Maartje C. Korver, Emily Haughton, William C. Floyd, and Ian J. W. Giesbrecht
Earth Syst. Sci. Data, 14, 4231–4250, https://doi.org/10.5194/essd-14-4231-2022, https://doi.org/10.5194/essd-14-4231-2022, 2022
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The central coastline of the northeast Pacific coastal temperate rainforest contains many small streams that are important for the ecology of the region but are sparsely monitored. Here we present the first 5 years (2013–2019) of streamflow and weather data from seven small streams, using novel automated methods with estimations of measurement uncertainties. These observations support regional climate change monitoring and provide a scientific basis for environmental management decisions.
Sarah Shakil, Suzanne E. Tank, Jorien E. Vonk, and Scott Zolkos
Biogeosciences, 19, 1871–1890, https://doi.org/10.5194/bg-19-1871-2022, https://doi.org/10.5194/bg-19-1871-2022, 2022
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Permafrost thaw-driven landslides in the western Arctic are increasing organic carbon delivered to headwaters of drainage networks in the western Canadian Arctic by orders of magnitude. Through a series of laboratory experiments, we show that less than 10 % of this organic carbon is likely to be mineralized to greenhouse gases during transport in these networks. Rather most of the organic carbon is likely destined for burial and sequestration for centuries to millennia.
David Olefeldt, Mikael Hovemyr, McKenzie A. Kuhn, David Bastviken, Theodore J. Bohn, John Connolly, Patrick Crill, Eugénie S. Euskirchen, Sarah A. Finkelstein, Hélène Genet, Guido Grosse, Lorna I. Harris, Liam Heffernan, Manuel Helbig, Gustaf Hugelius, Ryan Hutchins, Sari Juutinen, Mark J. Lara, Avni Malhotra, Kristen Manies, A. David McGuire, Susan M. Natali, Jonathan A. O'Donnell, Frans-Jan W. Parmentier, Aleksi Räsänen, Christina Schädel, Oliver Sonnentag, Maria Strack, Suzanne E. Tank, Claire Treat, Ruth K. Varner, Tarmo Virtanen, Rebecca K. Warren, and Jennifer D. Watts
Earth Syst. Sci. Data, 13, 5127–5149, https://doi.org/10.5194/essd-13-5127-2021, https://doi.org/10.5194/essd-13-5127-2021, 2021
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Wetlands, lakes, and rivers are important sources of the greenhouse gas methane to the atmosphere. To understand current and future methane emissions from northern regions, we need maps that show the extent and distribution of specific types of wetlands, lakes, and rivers. The Boreal–Arctic Wetland and Lake Dataset (BAWLD) provides maps of five wetland types, seven lake types, and three river types for northern regions and will improve our ability to predict future methane emissions.
Steven V. Kokelj, Justin Kokoszka, Jurjen van der Sluijs, Ashley C. A. Rudy, Jon Tunnicliffe, Sarah Shakil, Suzanne E. Tank, and Scott Zolkos
The Cryosphere, 15, 3059–3081, https://doi.org/10.5194/tc-15-3059-2021, https://doi.org/10.5194/tc-15-3059-2021, 2021
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Climate-driven landslides are transforming glacially conditioned permafrost terrain, coupling slopes with aquatic systems, and triggering a cascade of downstream effects. Nonlinear intensification of thawing slopes is primarily affecting headwater systems where slope sediment yields overwhelm stream transport capacity. The propagation of effects across watershed scales indicates that western Arctic Canada will be an interconnected hotspot of thaw-driven change through the coming millennia.
Scott Zolkos, Suzanne E. Tank, Robert G. Striegl, Steven V. Kokelj, Justin Kokoszka, Cristian Estop-Aragonés, and David Olefeldt
Biogeosciences, 17, 5163–5182, https://doi.org/10.5194/bg-17-5163-2020, https://doi.org/10.5194/bg-17-5163-2020, 2020
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High-latitude warming thaws permafrost, exposing minerals to weathering and fluvial transport. We studied the effects of abrupt thaw and associated weathering on carbon cycling in western Canada. Permafrost collapse affected < 1 % of the landscape yet enabled carbonate weathering associated with CO2 degassing in headwaters and increased bicarbonate export across watershed scales. Weathering may become a driver of carbon cycling in ice- and mineral-rich permafrost terrain across the Arctic.
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Short summary
Using 4 years of paired freshwater and marine water chemistry from the Central Coast of British Columbia (Canada), we show that coastal temperate rainforest streams are sources of organic nitrogen, iron, and carbon to the Pacific Ocean but not the inorganic nutrients easily used by marine phytoplankton. This distinction may have important implications for coastal food webs and highlights the need to sample all nutrients in fresh and marine waters year-round to fully understand coastal dynamics.
Using 4 years of paired freshwater and marine water chemistry from the Central Coast of British...
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