Format:
Online-Ressource (PDF-Datei: 5255 KB, 146 S.)
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Ill., graph. Darst., Kt.
Content:
The Arctic is considered as a focal region in the ongoing climate change debate. The currently observed and predicted climate warming is particularly pronounced in the high northern latitudes. Rising temperatures in the Arctic cause progressive deepening and duration of permafrost thawing during the arctic summer, creating an ‘active layer’ with high bioavailability of nutrients and labile carbon for microbial consumption. The microbial mineralization of permafrost carbon creates large amounts of greenhouse gases, including carbon dioxide and methane, which can be released to the atmosphere, creating a positive feedback to global warming. However, to date, the microbial communities that drive the overall carbon cycle and specifically methane production in the Arctic are poorly constrained. To assess how these microbial communities will respond to the predicted climate changes, such as an increase in atmospheric and soil temperatures causing increased bioavailability of organic carbon, it is necessary to investigate the current status …
Note:
Potsdam, Univ., Diss., 2013
Additional Edition:
Erscheint auch als Druck-Ausgabe Bischoff, Juliane Microbial communities and their response to Pleistocene and Holocene climate variabilities in the Russian Arctic 2013
Language:
English
Keywords:
Hochschulschrift
URN:
urn:nbn:de:kobv:517-opus-68895
URL:
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