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Fate of Terrigenous Nitrogen in East Siberian Arctic Shelf Sediments
| Content Provider | Semantic Scholar |
|---|---|
| Author | Burns, E. Jeffreys, Rees Wolff, George A. Sparkes, Robert B. Gustafsson, Ӧ. Wild, Birgit Semiletov, I. P. Dongen, Bart E. Van |
| Copyright Year | 2019 |
| Abstract | Climate warming in the East Siberian Arctic region has caused enhanced transport of large amounts of ‘old’ terrigenous organic matter (OM), previously stored for thousands of years in the (thawing) Siberian permafrost, to the East Siberian Arctic Seas (ESAS; Vonk et al., 2012). Although major progress has been made in the last decades, the fate of the organic carbon component of this remobilised terrigenous OM is still a matter of debate. Recent studies, for instance, indicate that (i) there are large differences in the degradation of different compound classes and fractions (e.g. dissolved vs particulate OM) and (ii) matrix association of these compounds exerts a first order control over their degradability (Sánchez-García et al., 2011; Karlsson et al., 2016; Sparkes et al., 2016; Tesi et al., 2016). A substantial part of the remobilised terrigenous organic carbon is degraded in the Arctic shelf water column and released into the atmosphere, particularly close to the point of origin, e.g. river outflow or coastal erosion of organic rich Pleistocene permafrost ice complex deposits, leading to a further positive feedback for global climate warming (Vonk et al., 2012; Vonk and Gustafsson, 2013; Bröder et al., 2016). |
| File Format | PDF HTM / HTML |
| DOI | 10.3997/2214-4609.201903035 |
| Alternate Webpage(s) | http://www.earthdoc.org/publication/download/?publication=99715 |
| Alternate Webpage(s) | https://doi.org/10.3997/2214-4609.201903035 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
