Table 23-4. Total Nutrient Budget for the Southeast Sector 

 (+ is in) (thousands of moles/day) 



Process 



(1) Particulate N & P calculated as follows. Steinhilper (9) gives sewage Part. 

 N ^ 1 g/m^; flow is 18 x 10^ m^/day; assume N:P= 10:1. 



(2) Particulate N & P in streams from stream carbon by Steinhilper (9), plus 

 assumption of C:N:P= 100:1 5:1.5. 



(3) Our limited data plus Hartwig's (5) data show dissolved org. N and P 

 flux from sediment is small. 



(4) Sediment resuspension of organic material excluded from calculation. 



(5) Assume particulate N:P= 10:1. 



The lagoon sediments are the repository for most of the "new," or 

 terrigenous, nutrients which have been deUvered to the southeast sector of 

 Kaneohe Bay. There is a substantial cycUng of nutrients between that 

 repository and the water column, with surprisingly Uttle loss (especially of 

 nitrogen). This situation has been recognized on the basis of a water-column 

 nutrient budget. We do not yet have enougli sediment nutrient data to establish 

 a quantitatively defensible sediment nutrient budget, but the nutrient level in 

 the sediment lends qualitative support to the assertion. 



356 



