Marshes 



181 



TOPOGRAPHY 



CONTOUR INTERVAL- 0.5 METER 

 150 METERS 



FLORAL COMMUNITIES 



Figure 154. Topography and floral communities of marsh at Newport Bay. Adapted from Stevenson (1954) and 

 Stevenson and Emery (1958, Figs. 32, 34). 



Table 12 



Characteristics of Sediments from Various Environments 



' CaC03 from acid loss and from gasometric C03= determinations. 



-Organic matter = nitrogen x IV, or organic carbon x 17. 



■' Italics indicate number of samples. 



^ Values for basin floors weighted according to relative areas of basins. 



