Articles | Volume 23, issue 12
https://doi.org/10.5194/bg-23-4227-2026
© Author(s) 2026. 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-23-4227-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
26 Jun 2026
Research article |
| 26 Jun 2026
| 26 Jun 2026
Macroalgal influence on particulate organic matter sources and early transformation in an Arctic fjord
National Centre for Polar and Ocean Research, Ministry of Earth Sciences, Vasco-da-Gama, Goa 403804, India
National Centre for Polar and Ocean Research, Ministry of Earth Sciences, Vasco-da-Gama, Goa 403804, India
Anand Jain
National Centre for Polar and Ocean Research, Ministry of Earth Sciences, Vasco-da-Gama, Goa 403804, India
Nandini Raj
Amity Institute of Biotechnology, Amity University, Uttar Pradesh 201313, India
Manish Tiwari
National Centre for Polar and Ocean Research, Ministry of Earth Sciences, Vasco-da-Gama, Goa 403804, India
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Short summary
Rapid Arctic warming is driving the expansion of coastal macroalgal forests, yet the role of their organic carbon in Arctic biogeochemistry remain largely unexplored. Here, isotopic, bulk, biochemical, and biomolecular analyses of surface particulate organic matter reveal that labile macroalgal carbon is a major contributor and is laterally transported with selective degradation. Continued expansion of macroalgal forests will enhance their role in Arctic carbon cycling and ecosystem functioning.
Rapid Arctic warming is driving the expansion of coastal macroalgal forests, yet the role of...
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