Table 6. Driving energy flows of sugarcane and salt marsh 

 ecosystems (Hopkinson 1978) . 



Energy input CE kcal/m 2 



Sugarcane Salt marsh 



Group I. Natural energies 

 Sunlight captured in 



gross photosynthesis 702 1232 



Wind 891 891 



Hydrostatic head of: 



Mississippi River 438 438 



Bayou Lafourche 



Rainwater 



2031 2561 



Group II. Natural energies 



Tides 17 



Chemical free energy of 



mixing: 



Mississippi River 374 



Bayou Lafourche 2 



Rainwater 



393 





 

 

 

 

 

 



1265 



Totals (CE kcal/m 2 /yr) 3296 2954 



40 



