scholarly journals Spatial and temporal variation of dissolved organic carbon export from gauged and ungauged watersheds of Dee Valley, Scotland: Effect of land cover and C:N

2007 ◽  
Vol 43 (5) ◽  
Author(s):  
J. A. Aitkenhead-Peterson ◽  
R. P. Smart ◽  
M. J. Aitkenhead ◽  
M. S. Cresser ◽  
W. H. McDowell
Keyword(s):  
Organic Carbon ◽  
Land Cover ◽  
Dissolved Organic Carbon ◽  
Temporal Variation ◽  
Spatial And Temporal Variation ◽  
Carbon Export ◽  
Ungauged Watersheds

scholarly journals Recent changes in nitrate and dissolved organic carbon export from the upper Kuparuk River, North Slope, Alaska

2007 ◽  
Vol 112 (G4) ◽  
pp. n/a-n/a ◽  
Author(s):  
J. W. McClelland ◽  
M. Stieglitz ◽  
Feifei Pan ◽  
R. M. Holmes ◽  
B. J. Peterson
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
North Slope ◽  
Carbon Export ◽  
Kuparuk River

scholarly journals Dissolved organic carbon export and internal cycling in small, headwater lakes

2010 ◽  
Vol 24 (4) ◽  
pp. n/a-n/a ◽  
Author(s):  
Edward G. Stets ◽  
Robert G. Striegl ◽  
George R. Aiken
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Carbon Export ◽  
Headwater Lakes ◽  
Internal Cycling

36year trends in dissolved organic carbon export from Finnish rivers to the Baltic Sea

2012 ◽  
Vol 435-436 ◽  
pp. 188-201 ◽  
Author(s):  
Antti Räike ◽  
Pirkko Kortelainen ◽  
Tuija Mattsson ◽  
David N. Thomas
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Baltic Sea ◽  
The Baltic Sea ◽  
Carbon Export ◽  
The Baltic

Effect of water table drawdown on peatland dissolved organic carbon export and dynamics

2008 ◽  
Vol 22 (17) ◽  
pp. 3373-3385 ◽  
Author(s):  
M. Strack ◽  
J. M. Waddington ◽  
R. A. Bourbonniere ◽  
E. L. Buckton ◽  
K. Shaw ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Water Table ◽  
Carbon Export ◽  
Effect Of Water

scholarly journals Hydrological processes and permafrost regulate magnitude, source and chemical characteristics of dissolved organic carbon export in a peatland catchment of northeastern China

2017 ◽  
Author(s):  
Yuedong Guo ◽  
Changchun Song ◽  
Wenwen Tan ◽  
Xianwei Wang ◽  
Yongzheng Lu
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Climate Warming ◽  
Northeastern China ◽  
Organic Layer ◽  
Chemical Characteristics ◽  
Carbon Export ◽  
Study Region ◽  
Growing Seasons ◽  
Doc Export

Abstract. Permafrost thawing in peatland has the potential to alter the catchment export of dissolved organic carbon (DOC), thus influencing carbon cycling in linked aquatic and ocean ecosystems. However, peatland along the southern margins of Eurasian permafrost are seldom examined in spite of the presence of considerable risks associated with degradation due to climate warming. This study examines dynamics of DOC export from a permafrost peatland catchment located in northeastern China during the growing seasons of 2012 to 2014. Our findings show that runoff processes affect observed DOC concentrations, magnitudes, sources, and chemical characteristics of stream discharge. The entire catchment exhibits strong potential for annual DOC exporting (4.87 g C m−2), and DOC from the peatland landscape alone is estimated to amount to 12.89 g C m−2. Annual DOC export processes are closely related to total discharge levels, and floods contribute to approximately 85 % of DOC export levels. Flood volumes derived mainly from peat pore water stored in the upper organic layer of the soil profile prior to rainfall events, creating a strong linkage between discharge and DOC concentrations. DOC source and chemical characteristics, as indicated by three fluorescence indexes, have changed regularly according to source shifts occurring as a result of flood and baseflow processes. A deepening of the active layer due to climate warming should elevate proportions of microbial-originated DOC in the baseflow. Given expected future increases in precipitation, our results show that the magnitude of DOC exports from the study region will increase.

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