7 Papers
Laura Halbach is an academic researcher from Alfred Wegener Institute for Polar and Marine Research. The author has contributed to research in topics: Glacier & Ice sheet. The author has an hindex of 1, co-authored 1 publications.
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Papers
Active and dormant microorganisms on glacier surfaces
James Bradley,Christopher B. Trivedi,Matthias Winkel,Rey Mourot,Stefanie Lutz,Catherine Larose,Christoph Keuschnig,Eva L. Doting,Laura Halbach,Athanasios Zervas,Alexandre M. Anesio,Liane G. Benning +11 more
TL;DR: In this article , a combination of metabarcoding and metatranscriptomic analyses, as well as cell-specific activity (BONCAT) incubations, were used to assess the diversity and activity of microbial communities from glacial surfaces in Iceland and Greenland.
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Pigment signatures of algal communities and their implications for glacier surface darkening
Laura Halbach,Lou-Anne Chevrollier,Eva L. Doting,Joseph M. Cook,Marie B. Jensen,Liane G. Benning,James Bradley,Martin Hansen,Lars Chr. Lund-Hansen,Stiig Markager,Brian K. Sorrell,Martyn Tranter,Christopher B. Trivedi,Matthias Winkel,Alexandre M. Anesio +14 more
TL;DR: In this paper , the impacts of algal pigment and community composition on surface darkening were investigated on three glaciers in Southeast Greenland, showing that algal biomass and pigments impacted chromophoric dissolved organic matter concentrations.
Dark ice in a warming world: advances and challenges in the study of Greenland Ice Sheet's biological darkening
Laura Halbach,Lou-Anne Chevrollier,Joseph M. Cook,I. T. Stevens,Alexandre M. Anesio,Liane G. Benning,Martyn Tranter +6 more
TL;DR: In this article , the authors summarized recent advances in the study of the biological darkening of the Greenland Ice Sheet and highlighted three key research priorities that are required to better understand and forecast algal-driven melt: identifying the controls on glacier ice algal growth and mortality, quantifying the spatio-temporal variability in glacier ice algae biomass and processes involved in cell redistribution and determining the albedo feedbacks between algal biomass and weathering crust characteristics.
Single-cell imaging reveals efficient nutrient uptake and growth of microalgae darkening the Greenland Ice Sheet
Laura Halbach,Katharina Kitzinger,Martin Hansen,Sten Littmann,Liane G. Benning,James A. Bradley,M. Whitehouse,Malin Olofsson,Rey Mourot,Martyn Tranter,Marcel M. M. Kuypers,Lea Ellegaard-Jensen,Alexandre M. Anesio +12 more
TL;DR: Single-cell imaging reveals microalgae on Greenland's ice sheet efficiently uptake nutrients, exhibiting high C:N and C:P ratios, and intracellular P storage, optimizing growth without additional nutrient inputs under oligotrophic conditions.
The winter pack-ice zone provides a sheltered but food-poor habitat for larval Antarctic krill.
Bettina Meyer,Bettina Meyer,Ulrich Freier,Volker Grimm,Jürgen Groeneveld,Brian P. V. Hunt,Sven E. Kerwath,Sven E. Kerwath,Sven E. Kerwath,Robert King,Christine Klaas,Evgeny A. Pakhomov,Klaus M Meiners,Klaus M Meiners,Jessica Melbourne-Thomas,Jessica Melbourne-Thomas,Eugene J. Murphy,Sally E. Thorpe,Sharon Stammerjohn,Dieter Wolf-Gladrow,Lutz Auerswald,Lutz Auerswald,Albrecht Götz,Albrecht Götz,Laura Halbach,Simon N. Jarman,Simon N. Jarman,So Kawaguchi,So Kawaguchi,Thomas Krumpen,Gernot Nehrke,Robert Ricker,Michael D. Sumner,Michael D. Sumner,Mathias Teschke,Rowan Trebilco,I. Noyan Yilmaz +36 more
TL;DR: Observations from the winter cruise to the southwest Atlantic sector of the Southern Ocean contradict this view and present the first evidence that the pack-ice zone is a food-poor habitat for larval development, but does serve as an important sheltering ground for developing larvae.