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Showing 1–7 of 7 results
Advanced filters: Author: Adina Paytan Clear advanced filters

  • Interdisciplinary research may be lauded, but it's not yet rewarded.

    • Adina Paytan
    • Mary Lou Zoback
    Comments & Opinion
    Nature
    Volume: 445, P: 950

  • Despite the broad use of barium as a proxy for past ocean export production, the underlying mechanisms of barite precipitation remain unknown. Here, the authors show, under experimental conditions, that barium bioaccumulation on bacterially produced biofilms is the crucial step for barite formation.

    • Francisca Martinez-Ruiz
    • Fadwa Jroundi
    • María Teresa González-Muñoz
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-9

  • Globally increased temperatures and a perturbation of the carbon cycle and biosphere characterized the Palaeocene–Eocene Thermal Maximum about 55.9 million years ago, but its effect on ocean productivity is controversial. Records of marine barite accumulation rates suggest that carbon sequestration during the event could have been enhanced by an efficient biological pump.

    • Zhongwu Ma
    • Ellen Gray
    • Adina Paytan
    Research
    Nature Geoscience
    Volume: 7, P: 382-388

  • Groundwater discharge is a mechanism that transports chemicals from inland systems to the ocean, but it has been considered of secondary influence compared to rivers. Here the authors assess the global significance of groundwater discharge, finding that it has a unique and important contribution to ocean chemistry and Earth-system models.

    • Kimberley K. Mayfield
    • Anton Eisenhauer
    • Adina Paytan
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-9

  • According to the 'iron hypothesis', the availability of iron as a nutrient is the main control on phytoplankton growth in the oceans, and so determines how much CO2 is drawn down from the atmosphere. The results of a study of sediment cores from the eastern equatorial Pacific Ocean cast doubt on this view.

    • Adina Paytan
    News & Views
    Nature
    Volume: 406, P: 468-469