Laudon, Hjalmar
- Department of Forest Ecology and Management, Swedish University of Agricultural Sciences
Letter2024Peer reviewedOpen access
Establishing fluvial silicon regimes and their stability across the Northern Hemisphere
Johnson, Keira; Jankowski, Kathi Jo; Carey, Joanna; Lyon, Nicholas J.; Mcdowell, William H.; Shogren, Arial; Wymore, Adam; Sethna, Lienne; Wollheim, Wilfred M.; Poste, Amanda E.; Kortelainen, Pirkko; Heindel, Ruth; Laudon, Hjalmar; Raeike, Antti; Jones, Jeremy B.; Mcknight, Diane; Julian, Paul; Bush, Sidney; Sullivan, Pamela L.
Abstract
Fluvial silicon (Si) plays a critical role in controlling primary production, water quality, and carbon sequestration through supporting freshwater and marine diatom communities. Geological, biogeochemical, and hydrological processes, as well as climate and land use, dictate the amount of Si exported by streams. Understanding Si regimes-the seasonal patterns of Si concentrations-can help identify processes driving Si export. We analyzed Si concentrations from over 200 stream sites across the Northern Hemisphere to establish distinct Si regimes and evaluated how often sites moved among regimes over their period of record. We observed five distinct regimes across diverse stream sites, with nearly 60% of sites exhibiting multiple regime types over time. Our results indicate greater spatial and interannual variability in Si seasonality than previously recognized and highlight the need to characterize the watershed and climate variables that affect Si cycling across diverse ecosystems.
Published in
Limnology and Oceanography Letters
2024, volume: 9, number: 3, pages: 237-246
Publisher: WILEY
SLU Authors
Global goals (SDG)
SDG6 Clean water and sanitation
SDG14 Life below water
UKÄ Subject classification
Oceanography, Hydrology, Water Resources
Publication identifier
- DOI: https://doi.org/10.1002/lol2.10372
Permanent link to this page (URI)
https://res.slu.se/id/publ/128148