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Showing 1–22 of 22 results
Advanced filters: Author: Melanie Wegener Clear advanced filters

  • Organisms vary in their nitrogen and phosphorus content, shaping ecological and evolutionary processes. This study shows that nitrogen deposition is a consistent global factor associated with plant and animal stoichiometry.

    • Angélica L. González
    • Julian Merder
    • Olivier Dézerald
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-12

  • Water isotope modelling is an important tool in climate reconstructions, but there remain gaps in our understanding of the effects upon oxygen and hydrogen isotope fractionation, and thus the source of the deposited signal. Here, the authors present a dataset assembled over two years that shows deuterium excess is controlled by humidity and sea surface temperature, and oxygen and hydrogen isotopes as well as deuterium excess are controlled by sublimation of snow in sea-ice regions.

    • Jean-Louis Bonne
    • Melanie Behrens
    • Martin Werner
    ResearchOpen Access
    Nature Communications
    Volume: 10, P: 1-10

  • The North Atlantic biological pump has the most intense absorption of C globally, but how this will fare in light of climate changes (especially sea-ice melting) is poorly understood. Here the authors present a 24-month continuous time series of physical, chemical, and biological observations in the Fram Strait.

    • Wilken-Jon von Appen
    • Anya M. Waite
    • Antje Boetius
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-16

  • Upwelling of CO2 from the Southern Ocean may have played a key role in deglacial warming, but marine sediment studies are hindered by inaccurate chronologies. Siani et al. present new surface reservoir 14C ages derived from tephra and show that deglacial CO2escape was synchronous with Antarctic warming.

    • Giuseppe Siani
    • Elisabeth Michel
    • Anna Lourantou
    Research
    Nature Communications
    Volume: 4, P: 1-9

  • Microplastic (MP) pollution in polar regions is a growing environmental concern, yet little is known regarding the role of sea-ice as a sink and transport vector of MPs. Here, the authors show that MPs in sea-ice have no uniform polymer composition and observe unique MP patterns in different sea-ice horizons.

    • Ilka Peeken
    • Sebastian Primpke
    • Gunnar Gerdts
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-12

  • An ice core record of carbon isotopic ratios in methane over the entire last glacial–interglacial transition is presented. The data show that the carbon in atmospheric methane is isotopically much heavier in cold climate periods. It is suggested that methane emissions due to biomass burning remained approximately constant throughout the glacial termination and that the atmospheric lifetime of methane is reduced during cold climate periods.

    • Hubertus Fischer
    • Melanie Behrens
    • Thomas F. Stocker
    Research
    Nature
    Volume: 452, P: 864-867

  • A new international competition aims to speed up the development of AI models that can assist radiologists in detecting suspicious lesions from hundreds of millions of pixels in 3D mammograms. The top three winning teams compare notes.

    • Jungkyu Park
    • Yoel Shoshan
    • Krzysztof J. Geras
    Comments & Opinion
    Nature Machine Intelligence
    Volume: 3, P: 735-736

  • Early stellarator designs suffered from high particle losses, an issue that can be addressed by optimization of the coils. Here the authors measure the magnetic field lines in the Wendelstein 7-X stellarator, confirming that the complicated design of the superconducting coils has been realized successfully.

    • T. Sunn Pedersen
    • M. Otte
    • Sandor Zoletnik
    ResearchOpen Access
    Nature Communications
    Volume: 7, P: 1-10

  • Arctic lake methane emissions, which occur primarily by ebullition, are difficult to quantify from extrapolating in situ data due to spatial and temporal variability. Remote sensing can detect ebullition, through changes in frozen lake surface properties, reducing uncertainty in emission fluxes.

    • M. Engram
    • K. M. Walter Anthony
    • F. J. Meyer
    Research
    Nature Climate Change
    Volume: 10, P: 511-517

  • Plastic debris and microplastics are ubiquitous in the Arctic. This Review describes the sources, distribution and consequences of this pollution, and calls for immediate action to mitigate further ecosystem impact.

    • Melanie Bergmann
    • France Collard
    • Mine B. Tekman
    Reviews
    Nature Reviews Earth & Environment
    Volume: 3, P: 323-337

  • A systematic review and meta-analysis of studies covering 66 countries reported wide-ranging maternal, fetal and neonatal health harms associated with heat exposure, including increased risks of preterm birth, stillbirths, obstetric complications, congenital anomalies and gestational diabetes.

    • Darshnika P. Lakhoo
    • Nicholas Brink
    • Nicholas Brink
    ResearchOpen Access
    Nature Medicine
    Volume: 31, P: 684-694

  • Atmospheric transport of microplastics could be a major source of plastic pollution to the ocean, yet observations currently remain limited. This Perspective quantifies the known budgets of the marine-atmospheric micro(nano)plastic cycle and proposes a future global observation strategy.

    • Deonie Allen
    • Steve Allen
    • Stephanie Wright
    Reviews
    Nature Reviews Earth & Environment
    Volume: 3, P: 393-405

  • Bracher et al. compare 15 forecasting models of COVID-19 cases and deaths in Germany and Poland between January and mid-April 2021. Many, though not all, models outperform a simple baseline model up to four weeks ahead, with ensemble methods showing very good relative performance.

    • Johannes Bracher
    • Daniel Wolffram
    • Melanie Schienle
    ResearchOpen Access
    Communications Medicine
    Volume: 2, P: 1-17