Almost 50 years of monitoring shows that climate, not forestry, controls long-term organic carbon fluxes in a large boreal watershed

2014 ◽  
Vol 20 (4) ◽  
pp. 1225-1237 ◽  
Author(s):  
Ahti Lepistö ◽  
Martyn N Futter ◽  
Pirkko Kortelainen
Keyword(s):  
Organic Carbon ◽  
Carbon Fluxes ◽  
Organic Carbon Fluxes

scholarly journals The ballast effect of lithogenic matter and its influences on the carbon fluxes in the Indian Ocean

2019 ◽  
Vol 16 (2) ◽  
pp. 485-503 ◽  
Author(s):  
Tim Rixen ◽  
Birgit Gaye ◽  
Kay-Christian Emeis ◽  
Venkitasubramani Ramaswamy
Keyword(s):  
Indian Ocean ◽  
Organic Carbon ◽  
Spatial Variability ◽  
Primary Production ◽  
Carbon Flux ◽  
Carbon Fluxes ◽  
Matter Content ◽  
Organic Carbon Flux ◽  
The Indian Ocean ◽  
Organic Carbon Fluxes

Abstract. Data obtained from long-term sediment trap experiments in the Indian Ocean in conjunction with satellite observations illustrate the influence of primary production and the ballast effect on organic carbon flux into the deep sea. They suggest that primary production is the main control on the spatial variability of organic carbon fluxes at most of our study sites in the Indian Ocean, except at sites influenced by river discharges. At these sites the spatial variability of organic carbon flux is influenced by lithogenic matter content. To quantify the impact of lithogenic matter on the organic carbon flux, the densities of the main ballast minerals, their flux rates and seawater properties were used to calculate sinking speeds of material intercepted by sediment traps. Sinking speeds in combination with satellite-derived export production rates allowed us to compute organic carbon fluxes. Flux calculations imply that lithogenic matter ballast increases organic carbon fluxes at all sampling sites in the Indian Ocean by enhancing sinking speeds and reducing the time of organic matter respiration in the water column. We calculated that lithogenic matter content in aggregates and pellets enhances organic carbon flux rates on average by 45 % and by up to 62 % at trap locations in the river-influenced regions of the Indian Ocean. Such a strong lithogenic matter ballast effect explains the fact that organic carbon fluxes are higher in the low-productive southern Java Sea compared to the high-productive western Arabian Sea. It also implies that land use changes and the associated enhanced transport of lithogenic matter from land into the ocean may significantly affect the CO2 uptake of the organic carbon pump in the receiving ocean areas.

Organic carbon fluxes mediated by corals at elevated pCO2 and temperature

2015 ◽  
Vol 519 ◽  
pp. 153-164 ◽  
Author(s):  
S Levas ◽  
AG Grottoli ◽  
ME Warner ◽  
WJ Cai ◽  
J Bauer ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Carbon Fluxes ◽  
Elevated Pco2 ◽  
Organic Carbon Fluxes

Phosphorus, nitrogen and dissolved organic carbon fluxes from sediments in freshwater rivermouths entering Green Bay (Lake Michigan; USA)

2020 ◽  
Vol 147 (2) ◽  
pp. 179-197 ◽  
Author(s):  
James H. Larson ◽  
William F. James ◽  
Faith A. Fitzpatrick ◽  
Paul C. Frost ◽  
Mary Anne Evans ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Lake Michigan ◽  
Carbon Fluxes ◽  
Green Bay ◽  
Organic Carbon Fluxes

Dissolved Organic Carbon Fluxes under Bare Soil

2007 ◽  
Vol 36 (2) ◽  
pp. 597-606 ◽  
Author(s):  
Jan Mertens ◽  
Jan Vanderborght ◽  
Roy Kasteel ◽  
Thomas Pütz ◽  
Roel Merckx ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Carbon Fluxes ◽  
Bare Soil ◽  
Organic Carbon Fluxes

Correlation of 210Pb removal with organic carbon fluxes in the Pacific Ocean

Nature ◽  
1988 ◽  
Vol 331 (6154) ◽  
pp. 339-341 ◽  
Author(s):  
Willard S. Moore ◽  
Jack Dymondt
Keyword(s):  
Pacific Ocean ◽  
Organic Carbon ◽  
Carbon Fluxes ◽  
The Pacific ◽  
The Pacific Ocean ◽  
Organic Carbon Fluxes

scholarly journals Erratum: Biophysical controls on organic carbon fluxes in fluvial networks

2009 ◽  
Vol 2 (8) ◽  
pp. 595-595 ◽  
Author(s):  
Tom J. Battin ◽  
Louis A. Kaplan ◽  
Stuart Findlay ◽  
Charles S. Hopkinson ◽  
Eugenia Marti ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Carbon Fluxes ◽  
Organic Carbon Fluxes ◽  
Biophysical Controls
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