Effects of forestry operations on dissolved organic carbon concentrations and export in boreal first-order streams
نویسندگان
چکیده
منابع مشابه
Importance of seasonality and small streams for the landscape regulation of dissolved organic carbon export
[1] The regulation of the spatial and seasonal variation in terrestrial dissolved organic carbon (DOC) exports was studied in a 68 km boreal stream system in northern Sweden. A total of 1213 DOC samples were collected in 15 subcatchments over a 3 year period (2003–2005). The mean annual DOC exports from the 15 subcatchments (0.03–21.72 km) ranged from 14.8 to 99.1 kg ha 1 yr . Many catchment ch...
متن کاملDissolved organic carbon pools and export from the coastal ocean
The distribution of dissolved organic carbon (DOC) concentration across coastal waters was characterized based on the compilation of 3510 individual estimates of DOC in coastal waters worldwide. We estimated the DOC concentration in the coastal waters that directly exchange with open ocean waters in two different ways, as the DOC concentration at the edge of the shelf break and as the DOC conce...
متن کاملSeasonal ice and hydrologic controls on dissolved organic carbon and nitrogen concentrations in a boreal‐rich fen
[1] Boreal wetland carbon cycling is vulnerable to climate change in part because hydrology and the extent of frozen ground have strong influences on plant and microbial functions. We examined the response of dissolved organic carbon (DOC) and total dissolved nitrogen (TDN) across an experimental manipulation of water table position (both raised and lowered water table treatments) in a boreal‐r...
متن کاملDissolved organic carbon characteristics in boreal streams in a forest-wetland gradient during the transition between winter and summer
[1] The character and quantity of dissolved organic carbon (DOC) were studied in nine small boreal streams and adjacent soils during two years, with focus on the spring snowmelt period. The streams cover a forest-wetland gradient, spanning from 0% to 69% wetland coverage. Lower values of the absorbance ratio measured at 254 nm and 365 nm (A254/A365), in both soil plots and streams, indicated th...
متن کاملDissolved organic carbon export with North Pacific Intermediate Water formation
[1] An evaluation of DOC export with the formation of North Pacific Intermediate Water is presented. Data from sites representing the relevant North Pacific water masses (subtropical, subpolar, and subtropical transitional) are used to demonstrate the process. We suggest that dissolved organic carbon (DOC)-replete Oyashio (subpolar) water mixes with DOC-depleted Kuroshio (subtropical) water in ...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Biogeosciences
سال: 2012
ISSN: 0148-0227
DOI: 10.1029/2011jg001827