scholarly journals Influence of bacterial uptake on deep-ocean dissolved organic carbon

2002 ◽  
Vol 16 (4) ◽  
pp. 74-1-74-12 ◽  
Author(s):  
Jørgen Bendtsen ◽  
Claus Lundsgaard ◽  
Mathias Middelboe ◽  
David Archer
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Deep Ocean ◽  
Bacterial Uptake

scholarly journals Hidden cycle of dissolved organic carbon in the deep ocean

2014 ◽  
Vol 111 (47) ◽  
pp. 16706-16711 ◽  
Author(s):  
Christopher L. Follett ◽  
Daniel J. Repeta ◽  
Daniel H. Rothman ◽  
Li Xu ◽  
Chiara Santinelli
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Deep Ocean

scholarly journals Comment on "Dilution limits dissolved organic carbon utilization in the deep ocean"

Science ◽  
2015 ◽  
Vol 350 (6267) ◽  
pp. 1483-1483 ◽  
Author(s):  
N. Jiao ◽  
L. Legendre ◽  
C. Robinson ◽  
H. Thomas ◽  
Y.-W. Luo ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Deep Ocean ◽  
Carbon Utilization

scholarly journals The Seasonal Flux and Fate of Dissolved Organic Carbon Through Bacterioplankton in the Western North Atlantic

2021 ◽  
Vol 12 ◽  
Author(s):  
Nicholas Baetge ◽  
Michael J. Behrenfeld ◽  
James Fox ◽  
Kimberly H. Halsey ◽  
Kristina D. A. Mojica ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
North Atlantic ◽  
Phytoplankton Bloom ◽  
North Atlantic Ocean ◽  
Net Primary Production ◽  
Deep Ocean ◽  
Carbon Demand ◽  
Carbon Pump ◽  
Biological Carbon Pump

The oceans teem with heterotrophic bacterioplankton that play an appreciable role in the uptake of dissolved organic carbon (DOC) derived from phytoplankton net primary production (NPP). As such, bacterioplankton carbon demand (BCD), or gross heterotrophic production, represents a major carbon pathway that influences the seasonal accumulation of DOC in the surface ocean and, subsequently, the potential vertical or horizontal export of seasonally accumulated DOC. Here, we examine the contributions of bacterioplankton and DOM to ecological and biogeochemical carbon flow pathways, including those of the microbial loop and the biological carbon pump, in the Western North Atlantic Ocean (∼39–54°N along ∼40°W) over a composite annual phytoplankton bloom cycle. Combining field observations with data collected from corresponding DOC remineralization experiments, we estimate the efficiency at which bacterioplankton utilize DOC, demonstrate seasonality in the fraction of NPP that supports BCD, and provide evidence for shifts in the bioavailability and persistence of the seasonally accumulated DOC. Our results indicate that while the portion of DOC flux through bacterioplankton relative to NPP increased as seasons transitioned from high to low productivity, there was a fraction of the DOM production that accumulated and persisted. This persistent DOM is potentially an important pool of organic carbon available for export to the deep ocean via convective mixing, thus representing an important export term of the biological carbon pump.

scholarly journals Response to Comment on "Dilution limits dissolved organic carbon utilization in the deep ocean"

Science ◽  
2015 ◽  
Vol 350 (6267) ◽  
pp. 1483-1483 ◽  
Author(s):  
J. M. Arrieta ◽  
E. Mayol ◽  
R. L. Hansman ◽  
G. J. Herndl ◽  
T. Dittmar ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Deep Ocean ◽  
Carbon Utilization

scholarly journals Excretion of dissolved organic carbon by phytoplankton of different sizes and subsequent bacterial uptake

1996 ◽  
Vol 132 ◽  
pp. 249-255 ◽  
Author(s):  
NZ Malinsky-Rushansky ◽  
C Legrand
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Bacterial Uptake

scholarly journals Complementary pathways of dissolved organic carbon removal pathways in clear-water Amazonian ecosystems: photochemical degradation and bacterial uptake

2006 ◽  
Vol 56 (1) ◽  
pp. 8-17 ◽  
Author(s):  
André M. Amado ◽  
Vinicius F. Farjalla ◽  
Francisco de A. Esteves ◽  
Reinaldo L. Bozelli ◽  
Fábio Roland ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Photochemical Degradation ◽  
Clear Water ◽  
Carbon Removal ◽  
Bacterial Uptake

Deep-ocean gradients in the concentration of dissolved organic carbon

Nature ◽  
10.1038/26200 ◽  
1998 ◽  
Vol 395 (6699) ◽  
pp. 263-266 ◽  
Author(s):  
Dennis A. Hansell ◽  
Craig A. Carlson
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Deep Ocean

scholarly journals Localized refractory dissolved organic carbon sinks in the deep ocean

2013 ◽  
Vol 27 (3) ◽  
pp. 705-710 ◽  
Author(s):  
Dennis A. Hansell ◽  
Craig A. Carlson
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Deep Ocean ◽  
Carbon Sinks
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