Matches in SemOpenAlex for { <https://semopenalex.org/work/W4240647564> ?p ?o ?g. }
- W4240647564 abstract "Abstract. Runoff from small glacier systems contains dissolved organic carbon (DOC), rich in protein-like, low molecular weight (LMW) compounds, designating glaciers as an important source of bioavailable carbon for downstream heterotrophic activity. Fluxes of DOC and particulate organic carbon (POC) exported from large Greenland catchments, however, remain unquantified, despite the Greenland Ice Sheet (GrIS) being the largest source of global glacial runoff (ca. 400 km3 yr−1). We report high and episodic fluxes of POC and DOC from a large (1200 km2) GrIS catchment during contrasting melt seasons. POC dominates organic carbon (OC) export (70–89% on average), is sourced from the ice sheet bed and contains a significant bioreactive component (9% carbohydrates). A major source for the bioavailable (free carbohydrates) LMW-DOC fraction is microbial activity on the ice sheet surface, with some further addition of LMW-DOC to meltwaters by biogeochemical processes at the ice sheet bed. The bioavailability of the exported DOC (30–58%) to downstream marine microorganisms is similar to that reported from other glacial watersheds. Annual fluxes of DOC and free carbohydrates during two melt seasons were similar, despite the ~ 2 fold difference in runoff fluxes, suggesting production-limited DOC sources. POC fluxes were also insensitive to an increase in seasonal runoff volumes, indicating supply-limitation of suspended sediment in runoff. Scaled to the GrIS, the combined DOC and POC fluxes (0.13–0.17 Tg C yr−1 DOC, 0.36–1.52 Tg C yr−1 mean POC) are of a similar order of magnitude to a large Arctic river system, and hence represent an important OC source to the North Atlantic, Greenland and Labrador Seas." @default.
- W4240647564 created "2022-05-12" @default.
- W4240647564 creator A5008943918 @default.
- W4240647564 creator A5016499068 @default.
- W4240647564 creator A5026534185 @default.
- W4240647564 creator A5030210175 @default.
- W4240647564 creator A5033341956 @default.
- W4240647564 creator A5047240083 @default.
- W4240647564 creator A5052312089 @default.
- W4240647564 creator A5057191587 @default.
- W4240647564 creator A5068282620 @default.
- W4240647564 creator A5069330732 @default.
- W4240647564 date "2013-12-10" @default.
- W4240647564 modified "2023-09-29" @default.
- W4240647564 title "Greenland Ice Sheet exports labile organic carbon to the Arctic oceans" @default.
- W4240647564 cites W1499549225 @default.
- W4240647564 cites W1557582538 @default.
- W4240647564 cites W1799264173 @default.
- W4240647564 cites W1876020679 @default.
- W4240647564 cites W1877156060 @default.
- W4240647564 cites W1970117549 @default.
- W4240647564 cites W1976086632 @default.
- W4240647564 cites W1978135936 @default.
- W4240647564 cites W1986966441 @default.
- W4240647564 cites W1987432568 @default.
- W4240647564 cites W1995283781 @default.
- W4240647564 cites W2000378492 @default.
- W4240647564 cites W2006763490 @default.
- W4240647564 cites W2007181472 @default.
- W4240647564 cites W2008268620 @default.
- W4240647564 cites W2009094693 @default.
- W4240647564 cites W2009254779 @default.
- W4240647564 cites W2016576552 @default.
- W4240647564 cites W2020778973 @default.
- W4240647564 cites W2031033493 @default.
- W4240647564 cites W2031473827 @default.
- W4240647564 cites W2033147097 @default.
- W4240647564 cites W2033233017 @default.
- W4240647564 cites W2033338965 @default.
- W4240647564 cites W2033360682 @default.
- W4240647564 cites W2035982597 @default.
- W4240647564 cites W2040921034 @default.
- W4240647564 cites W2042015642 @default.
- W4240647564 cites W2045646640 @default.
- W4240647564 cites W2048795567 @default.
- W4240647564 cites W2049856856 @default.
- W4240647564 cites W2052947122 @default.
- W4240647564 cites W2059271609 @default.
- W4240647564 cites W2069248215 @default.
- W4240647564 cites W2074179901 @default.
- W4240647564 cites W2075357311 @default.
- W4240647564 cites W2075871983 @default.
- W4240647564 cites W2077006844 @default.
- W4240647564 cites W2077709380 @default.
- W4240647564 cites W2079847387 @default.
- W4240647564 cites W2088034060 @default.
- W4240647564 cites W2088986846 @default.
- W4240647564 cites W2092990959 @default.
- W4240647564 cites W2095711082 @default.
- W4240647564 cites W2096510407 @default.
- W4240647564 cites W2098706036 @default.
- W4240647564 cites W2103166954 @default.
- W4240647564 cites W2107293678 @default.
- W4240647564 cites W2120310788 @default.
- W4240647564 cites W2120321951 @default.
- W4240647564 cites W2120918440 @default.
- W4240647564 cites W2124085139 @default.
- W4240647564 cites W2124562303 @default.
- W4240647564 cites W2126770601 @default.
- W4240647564 cites W2126855263 @default.
- W4240647564 cites W2134542073 @default.
- W4240647564 cites W2137899037 @default.
- W4240647564 cites W2138963913 @default.
- W4240647564 cites W2140534161 @default.
- W4240647564 cites W2145282289 @default.
- W4240647564 cites W2147380432 @default.
- W4240647564 cites W2148156522 @default.
- W4240647564 cites W2152300282 @default.
- W4240647564 cites W2162889508 @default.
- W4240647564 cites W4211057975 @default.
- W4240647564 cites W79127606 @default.
- W4240647564 doi "https://doi.org/10.5194/bgd-10-19311-2013" @default.
- W4240647564 hasPublicationYear "2013" @default.
- W4240647564 type Work @default.
- W4240647564 citedByCount "3" @default.
- W4240647564 countsByYear W42406475642014 @default.
- W4240647564 countsByYear W42406475642017 @default.
- W4240647564 countsByYear W42406475642019 @default.
- W4240647564 crossrefType "posted-content" @default.
- W4240647564 hasAuthorship W4240647564A5008943918 @default.
- W4240647564 hasAuthorship W4240647564A5016499068 @default.
- W4240647564 hasAuthorship W4240647564A5026534185 @default.
- W4240647564 hasAuthorship W4240647564A5030210175 @default.
- W4240647564 hasAuthorship W4240647564A5033341956 @default.
- W4240647564 hasAuthorship W4240647564A5047240083 @default.
- W4240647564 hasAuthorship W4240647564A5052312089 @default.
- W4240647564 hasAuthorship W4240647564A5057191587 @default.
- W4240647564 hasAuthorship W4240647564A5068282620 @default.
- W4240647564 hasAuthorship W4240647564A5069330732 @default.
- W4240647564 hasBestOaLocation W42406475641 @default.