scholarly journals High dissolved organic carbon release by benthic cyanobacterial mats in a Caribbean reef ecosystem

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Hannah J. Brocke ◽  
Frank Wenzhoefer ◽  
Dirk de Beer ◽  
Benjamin Mueller ◽  
Fleur C. van Duyl ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Cyanobacterial Mats ◽  
Caribbean Reef ◽  
Carbon Release ◽  
Reef Ecosystem

Effect of light availability on dissolved organic carbon release by Caribbean reef algae and corals

2014 ◽  
Vol 90 (3) ◽  
pp. 875-893 ◽  
Author(s):  
B Mueller ◽  
RM van der Zande ◽  
PJM van Leent ◽  
EH Meesters ◽  
MJA Vermeij ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Light Availability ◽  
Caribbean Reef ◽  
Carbon Release ◽  
Effect Of Light

Rates of carbon fixation, organic carbon release and translocation in a reef-building foraminifer, Marginopora vertebralis

1977 ◽  
Vol 28 (3) ◽  
pp. 311 ◽  
Author(s):  
DF Smith ◽  
WJ Wiebe
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Particulate Organic Carbon ◽  
Carbon Fixation ◽  
Turnover Time ◽  
In Situ Incubation ◽  
Carbon Release ◽  
Hermatypic Corals ◽  
Shell Carbonate

Rate measurements obtained in this study and the population densities of foraminifera reported elsewhere suggest that such organisms may well exceed the hermatypic corals in their contribution to reef biogensis and energy fluxes. The average rates at which M. vertebralis photosynthetically fixes carbon into particulate organic carbon, dissolved organic carbon, and shell carbonate, per square centimetre of organism, were estimated to be 50, 1 .5, and 26 ng C min-1 respectively. Exogenously supplied dissolved organic carbon was taken up by M. vertebralis at a rate of 0.05 ng C min-1 in the light, and 0.09 ng C min-1 in the dark per square centimetre of organism. The turnover time of particulate organic carbon (91 h) was measured in a long-term in situ incubation during which 19% of the radioactivity lost from the particulate organic carbon entered the calcareous foraminiferal shell.

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