Benthic-pelagic coupling in the Barents Sea: an integrated data-model framework.
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Freitas, Felipe S.
Hendry, Katharine R.
Henley, Sian F.
Faust, Johan C.
Tessin, Allyson C.
Stevenson, Mark A.
Abbott, Geoffrey D.
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The Barents Sea is experiencing long-term climate-driven changes, e.g. modification in oceanographic conditions and extensive sea ice loss, which can lead to large, yet unquantified disruptions to ecosystem functioning. This key region hosts a large fraction of Arctic primary productivity. However, processes governing benthic and pelagic coupling are not mechanistically understood, limiting our ability to predict the impacts of future perturbations. We combine field observations with a reaction-transport model approach to quantify organic matter (OM) processing and disentangle its drivers. Sedimentary OM reactivity patterns show no gradients relative to sea ice extent, being mostly driven by seafloor spatial heterogeneity. Burial of high reactivity, marine-derived OM is evident at sites influenced by Atlantic Water (AW), whereas low reactivity material is linked to terrestrial inputs on the central shelf. Degradation rates are mainly driven by aerobic respiration (40-75%), being greate.....
JournalPhilosophical Transactions Of The Royal Society A - Mathematical Physical And Engineering Sciences
Sustainable Development Goals (SDG)14.a
Spatial CoverageBarents Sea
CitationFreitas, F. S., Hendry, K. R., Henley, S. F., Faust, J. C., Tessin, A. C., et al. (2020) Benthic-pelagic coupling in the Barents Sea: An integrated data-model framework. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 378:0359, 15pp. DOI: https://doi.org/10.1098/rsta.2019.0359
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