Die Biogeochemie der Ozean-Eis-Interaktion in Grönland
Zusammenfassung der Projektergebnisse
In summary, via field studies in Disko Bay, southwest Greenland (Nuup Kangerlua and Ameralik), northeast Greenland (Nioghalvfjerdsbræ, ‘the 79° North Glacier’) and the Western Antarctic Peninsula, we characterize glaciers as important sources of the micronutrient Mn to marine budgets, and minor sources of Fe and silica. Diverging responses to glacier retreat and increasing freshwater are expected contrasting the Antarctic and Arctic. Freshwater in Greenland glacier fjords increases stratification in systems where primary production is already N-limited throughout summer, further favoring heterotrophic processes and reinforcing conditions that induce ow marine primary production. Conversely, light remains the main bottom-up driver of primary production around the WAP in summer. Runoff thereby promotes stratification with macronutrients and micronutrient (Fe and Mn) concentrations both sufficient to facilitate increased primary production under more favorable light regimes.
Projektbezogene Publikationen (Auswahl)
-
Review article: How does glacier discharge affect marine biogeochemistry and primary production in the Arctic? The Cryosphere, 14(4), 1347–1383.
Hopwood, Mark J.; Carroll, Dustin; Dunse, Thorben; Hodson, Andy; Holding, Johnna M.; Iriarte, José L.; Ribeiro, Sofia; Achterberg, Eric P.; Cantoni, Carolina; Carlson, Daniel F.; Chierici, Melissa; Clarke, Jennifer S.; Cozzi, Stefano; Fransson, Agneta; Juul-Pedersen, Thomas; Winding, Mie H. S. & Meire, Lorenz
-
Decoupling of particles and dissolved iron downstream of Greenlandic glacier outflows. Earth and Planetary Science Letters, 576, 117234.
van Genuchten, C.M.; Rosing, M.T.; Hopwood, M.J.; Liu, T.; Krause, J. & Meire, L.
-
The 79°N Glacier cavity modulates subglacial iron export to the NE Greenland Shelf. Nature Communications, 12(1).
Krisch, Stephan; Hopwood, Mark James; Schaffer, Janin; Al-Hashem, Ali; Höfer, Juan; Rutgers, van der Loeff Michiel M.; Conway, Tim M.; Summers, Brent A.; Lodeiro, Pablo; Ardiningsih, Indah; Steffens, Tim & Achterberg, Eric Pieter
-
Trace Element (Fe, Co, Ni and Cu) Dynamics Across the Salinity Gradient in Arctic and Antarctic Glacier Fjords. Frontiers in Earth Science, 9.
Krause, Jana; Hopwood, Mark J.; Höfer, Juan; Krisch, Stephan; Achterberg, Eric P.; Alarcón, Emilio; Carroll, Dustin; González, Humberto E.; Juul-Pedersen, Thomas; Liu, Te; Lodeiro, Pablo; Meire, Lorenz & Rosing, Minik T.
-
Dissolved, Labile, and Total Particulate Trace Metal Dynamics on the Northeast Greenland Shelf. Global Biogeochemical Cycles, 36(12).
Chen, Xue‐Gang; Krisch, Stephan; Al‐Hashem, Ali; Hopwood, Mark James; Rutgers, van der Loeff Michiel M.; Huhn, Oliver; Lodeiro, Pablo; Steffens, Tim & Achterberg, Eric P.
-
Quantifying Ice‐Sheet Derived Lead (Pb) Fluxes to the Ocean; A Case Study at Nioghalvfjerdsbræ. Geophysical Research Letters, 49(21).
Krisch, Stephan; Huhn, Oliver; Al‐Hashem, Ali; Hopwood, Mark J.; Lodeiro, Pablo & Achterberg, Eric P.
-
Solid-phase Mn speciation in suspended particles along meltwater-influenced fjords of West Greenland. Geochimica et Cosmochimica Acta, 326, 180-198.
van Genuchten, C.M.; Hopwood, M.J.; Liu, T.; Krause, J.; Achterberg, E.P.; Rosing, M.T. & Meire, L.
-
Glacier‐Derived Particles as a Regional Control on Marine Dissolved Pb Concentrations. Journal of Geophysical Research: Biogeosciences, 128(10).
Krause, Jana; Zhu, Xunchi; Höfer, Juan; Achterberg, Eric P.; Engel, Anja; Meire, Lorenz; Stuart‐Lee, Alice E. & Hopwood, Mark J.
-
Influence of glacier type on bloom phenology in two Southwest Greenland fjords. Estuarine, Coastal and Shelf Science, 284, 108271.
Stuart-Lee, A.E.; Mortensen, J.; Juul-Pedersen, T.; Middelburg, J.J.; Soetaert, K.; Hopwood, M.J.; Engel, A. & Meire, L.
