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Publication . Article . Other literature type . 2020

Benthic phosphorus cycling within the Eurasian marginal sea ice zone

Allyson Tessin; Christian März; Monika Kędra; Jens Matthiessen; Nathalie Morata; Michael Nairn; Matt O'Regan; +1 Authors
Open Access
Published: 31 Aug 2020 Journal: Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, volume 378, page 20,190,358 (issn: 1364-503X, eissn: 1471-2962, Copyright policy )
Publisher: The Royal Society

The Arctic Ocean region is currently undergoing dramatic changes, which will likely alter the nutrient cycles that underpin Arctic marine ecosystems. Phosphate is a key limiting nutrient for marine life but gaps in our understanding of the Arctic phosphorus (P) cycle persist. In this study, we investigate the benthic burial and recycling of phosphorus using sediments and pore waters from the Eurasian Arctic margin, including the Barents Sea slope and the Yermak Plateau. Our results highlight that P is generally lost from sediments with depth during organic matter respiration. On the Yermak Plateau, remobilization of P results in a diffusive flux of P to the seafloor of between 96 and 261 µmol m −2  yr −1 . On the Barents Sea slope, diffusive fluxes of P are much larger (1736–2449 µmol m −2  yr −1 ), but these fluxes are into near-surface sediments rather than to the bottom waters. The difference in cycling on the Barents Sea slope is controlled by higher fluxes of fresh organic matter and active iron cycling. As changes in primary productivity, ocean circulation and glacial melt continue, benthic P cycling is likely to be altered with implications for P imported into the Arctic Ocean Basin. This article is part of the theme issue ‘The changing Arctic Ocean: consequences for biological communities, biogeochemical processes and ecosystem functioning’.

Subjects by Vocabulary

Microsoft Academic Graph classification: Oceanography Nutrient cycle Benthic zone Environmental science Sea ice geography.geographical_feature_category geography Arctic Plateau Biogeochemical cycle Marine ecosystem Oceanic basin


General Physics and Astronomy, General Engineering, General Mathematics, Arctic Regions, Diffusion, Ecosystem, Geologic Sediments, Global Warming, Ice Cover, Iron, Norway, Organic Chemicals, Phosphorus, Seasons, Seawater, Articles

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Funded by
Paleo-nutriet dynamics in the Eurasian Arctic Ocean
  • Funder: European Commission (EC)
  • Project Code: 709175
  • Funding stream: H2020 | MSCA-IF-EF-ST
Related to Research communities
European Marine Science Marine Environmental Science : Paleo-nutriet dynamics in the Eurasian Arctic Ocean
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Europe PubMed Central
Other literature type . 2020
Data sources: PubMed Central