Blar i forfatter "Kellerman, Anne M."

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    • Catchment characteristics and seasonality control the composition of microbial assemblages exported from three outlet glaciers of the Greenland Ice Sheet 

      Vrbická, Kristýna; Kohler, Tyler J.; Falteisek, Lukáš; Hawkings, Jon R.; Vinšová, Petra; Bulínová, Marie; Lamarche-Gagnon, Guillaume; Hofer, Stefan; Kellerman, Anne M.; Holt, Amy D.; Cameron, Karen Anne; Schön, Martina; Wadham, Jemma Louise; Stibal, Marek (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11-29)
      Glacial meltwater drains into proglacial rivers where it interacts with the surrounding landscape, collecting microbial cells as it travels downstream. Characterizing the composition of the resulting microbial assemblages in transport can inform us about intra-annual changes in meltwater flowpaths beneath the glacier as well as hydrological connectivity with proglacial areas. Here, we investigated ...

    • Large subglacial source of mercury from the southwestern margin of the Greenland Ice Sheet 

      Hawkings, Jon R.; Linhoff, Benjamin S.; Wadham, Jemma L.; Stibal, Marek; Lamborg, Carl H.; Carling, Gregory T.; Lamarche-Gagnon, Guillaume; Kohler, Tyler J.; Ward, Rachael; Hendry, Katharine R.; Falteisek, Lukáš; Kellerman, Anne M.; Cameron, Karen A.; Hatton, Jade E.; Tingey, Sarah; Holt, Amy D.; Vinšová, Petra; Hofer, Stefan; Bulínová, Marie; Větrovský, Tomáš; Meire, Lorenz; Spencer, Robert G. M. (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-24)
      The Greenland Ice Sheet is currently not accounted for in Arctic mercury budgets, despite large and increasing annual runoff to the ocean and the socio-economic concerns of high mercury levels in Arctic organisms. Here we present concentrations of mercury in meltwaters from three glacial catchments on the southwestern margin of the Greenland Ice Sheet and evaluate the export of mercury to downstream ...

    • Seasonal Changes in Dissolved Organic Matter Composition in a Patagonian Fjord Affected by Glacier Melt Inputs 

      Marshall, Matthew G.; Kellerman, Anne M.; Wadham, Jemma Louise; Hawkings, Jon R.; Daneri, Giovanni; Torres, Rodrigo; Pryer, Helena V.; Beaton, Alexander; Ng, Hong Chin; Urra, Alejandra; Robinson, Laura F.; Spencer, Robert G.M. (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-04-09)
      Biogeochemical processes in fjords are likely affected by changes in surrounding glacier cover but very little is known about how meltwater directly influences dissolved organic matter (DOM) in fjords. Moreover, the data available are restricted to a handful of northern hemisphere sites. Here we analyze seasonal and spatial variation in dissolved organic carbon (DOC) concentration and DOM composition ...