4-29 Geographic distribution of site groups sampled on 



the coast of Haine (Larsen and Doggett, in press ) 4-90 



4-30 Distribution of a typical marine intertidal invertebrate 

 community in moderately exposed New England sand beaches 

 during winter and summer (from Crocker et al. 1975) 4-98 



4-31 Relations among the major biotic components of the sand 



beach class (adapted from Odum et al. 1974) 4-99 



5-1 The major estuarine systems in region 1 of the characterization 

 area as listed in table 5-1 and as delineated by the National 

 Wetlands Inventory (Cowardin et al . 1979) 5-4 



5-2 The major estuarine systems in region 2 of the characterization 

 area as listed in table 5-1 and as delineated by the National 

 Wetlands Inventory (Cowardin et al . 1979) 5-5 



5-3 The major estuarine systems in region 3 of the characterization 

 area as listed in table 5-1 and as delineated by the National 

 Wetlands Inventory (Cowardin et al. 1979) 5-6 



5-4 The major estuarine systems in region 4 of the characterization 

 area as listed in table 5-1 and as delineated by the National 

 Wetlands Inventory (Cowardin et al. 1979) 5-7 



5-5 The major estuarine systems in region 5 of the characterization 

 area as listed in table 5-1 and as delineated by the National 

 Wetlands Inventory (Cowardin et al. 1979) 5-8 



5-6 The major estuarine systems in region 6 of the characterization 

 area as listed in table 5-1 and as delineated by the National 

 Wetlands Inventory (Cowardin et al. 1979) 5-9 



5-7 Hierarchical classification of the estuarine system 



of coastal Maine (Cowardin et al. 1979) 5-10 



5-8 Size distribution of sediment particles in estuarine 

 habitats of coastal Maine. Dots indicate dominant 

 size, arrows indicate range 5-14 



5-9 Cross-sectional diagrams of generalized estuarine 



types found in coastal Maine 5-19 



5-10 Salinity (ppt) , flushing time (number of tides) , 



mean tidal velocity (km/hr) , and non-tidal velocity 

 (km/hr) as predicted by the Ketchum estuarine flushing 

 model for the Presumpscot estuary. Data are plotted from 

 the head of the estuary (0 km) downstream to the 

 point of predicted oceanic salinity 5-23 



XI 



