Benthic phosphorus cycling within the Eurasian marginal sea ice zone.

ABSTRACT: 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^-2yr^-1. On the Barents Sea slope, diffusive fluxes of P are much larger (1

SUBMITTER: Tessin A 

PROVIDER: S-EPMC7481675 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature