Land influence decouples benthic nutrient fluxes on the Siberian Arctic Ocean shelvesстатья
Статья опубликована в высокорейтинговом журнале
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 23 января 2026 г.
Аннотация:Land permafrost thaw transfers increasing amounts of organic matter and nutrients to the Arctic Ocean. Thesenutrients could stimulate primary production directly, or indirectly following remineralization in sediments.Projections of this effect are limited by scarce observations and poor understanding of the underlying controls.Here, we focus on the Kara, Laptev, and East Siberian Sea shelves that receive strong input from large rivers andcoastal erosion, linking ship-board measurements of sediment–water nutrient fluxes to environmental parametersassociated with land input. Ammonium and nitrite releases were positively related to high concentrationand low decomposition state of terrigenous organic matter, based on biomarkers. Nitrate release was related to O2 penetration depth. Phosphate and silicate release were highest at stations with strong marine influence. Ourfindings suggest that changes in environmental conditions, such as land input, might alter the nutrient balancein the Siberian Arctic Ocean, with implications for ecological and biogeochemical processes.