174 



MARSH 



TABLE 1 



Reef System Structural and Functional Characteristics 

 That Have Been Measured at Enewetak 



Characteristic 



Quantitative 

 estimate 



Reference 



Organic CO2 flux 



CaCOa precipitation 



CaCOs precipitation 



Vertical reef accretion 



Nitrogen export from reef flat 



Mucus exfxirt from reef flat 

 to lagoon 



BOD, "internal sediments" 



Net P, algal mats 



Net P, Halimeda 



Net P, calcareous red algae 



Gross P, calcareous red algae 



Pavement O2 evolution 



Pavement P:R ratio (24h) 



Photosynthate of pavement 

 community released as 

 soluble organics 



Nitrogen fixation, algal-colored 

 pavement 

 Upper intertidai 

 Reef flat 



Ratio of nitrogen :pfiosphorus 

 release in sea cucumbers 



±0.2 to 6 moles m"^d"' 

 4 kg m~^ yr~' 



-0.02 to 02 moles m"^d ' 

 3 to 5 mm yr~' 



1000kgha~V' 

 20 mg m"2fi"' 



0.06 to 0.50 mgg~'h~' 

 0.6 to 2 ISgCm'^d^' 

 Up to 2 3 gCm^^d"' 



0.66 gCm"^d"' 



1.5 gCm-^d"' 



Up to 5.5 X 10"^ ml cm"^h' 



Up to 1.6 



50% 



34 X 10^' moles cm"^h ' 

 55 X 10"' moles cm"^h"' 



Odum and Odum, 1955 

 Smith and Marsh, 1973 

 Smith and Marsh, 1973 



Odum and Odum, 1955 

 Smith and Marsh, 1973 

 Smith and Marsh, 1973 



Odum and Odum, 1955 

 Smith and Marsh, 1973 

 Smith and Marsh, 1973 



Smith, 1974 



Smith and Kinsey, 1976 



Smith, 1974 



Smith and Kinsey, 1976 



Webb et al., 1975 



Johannes, 1967 



DiSalvo, 1971 



Bakus, 1967 



Hillis-Colinvaux, 

 1974 



Marsh, 1970 



Marsh, 1970 



Wells et al., 1973. 



Wells et al., 1973 



Pomeroy et al., 1974 



Wiebe et al., 1975 



Webb et al., 1977 



Webb et al., 1977 



Wethey and Porter, 1976b 

 (This table continued on next page.) 



