Articles | Volume 22, issue 2
https://doi.org/10.5194/bg-22-601-2025
© Author(s) 2025. 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-22-601-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
31 Jan 2025
Research article |
| 31 Jan 2025
| 31 Jan 2025
Contrasting seasonal patterns in particle aggregation and dissolved organic matter transformation in a sub-Arctic fjord
Maria G. Digernes
CORRESPONDING AUTHOR
Department of Chemistry, Norwegian University of Technology, Trondheim, 7049, Norway
Yasemin V. Bodur
CORRESPONDING AUTHOR
Arctic and Marine Biology, UiT The Arctic University of Norway, Tromsø, 9019, Norway
Martí Amargant-Arumí
Arctic and Marine Biology, UiT The Arctic University of Norway, Tromsø, 9019, Norway
Oliver Müller
Department of Biological Sciences, University of Bergen, Bergen, 78303, Norway
Jeffrey A. Hawkes
Department of Chemistry, University of Uppsala, Uppsala, 75124, Sweden
Stephen G. Kohler
Department of Chemistry, Norwegian University of Technology, Trondheim, 7049, Norway
Ulrike Dietrich
Arctic and Marine Biology, UiT The Arctic University of Norway, Tromsø, 9019, Norway
Marit Reigstad
Arctic and Marine Biology, UiT The Arctic University of Norway, Tromsø, 9019, Norway
Maria L. Paulsen
Department of Biology, Aarhus University, Aarhus, 8000, Denmark
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Short summary
Dissolved (DOM) and particulate organic matter (POM) are in constant exchange but are usually studied as distinct entities. We investigated the dynamics between POM and DOM in a sub-Arctic fjord across different seasons by conducting bi-monthly aggregation–dissolution experiments. During the productive period, POM concentrations increased in the experiment, and DOM molecules became more recalcitrant. During the winter period, POM concentrations decreased, and DOM molecules became more labile.
Dissolved (DOM) and particulate organic matter (POM) are in constant exchange but are usually...
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