FIGURES (continued) 



Nunber ^^^^ 



15 (A) An idealized sequence of NWTC bottomland hardwood zones 

 from a water body to an upland, along a moisture continuum. 



(B) One-half of a floodplain from mid-alluvial river to 

 bluff, indicating modification of the idealized sequence by 

 the intrusion of a natural levee between Zones II and III. 



(C) Further modification of the idealized sequence by 



inclusion of an abandoned river channel 24 



16 Diagrammatic scheme of the relationship of bottomland hardwood 

 zones to soil types on a large alluvial river floodplain 



(Congaree Swamp National Monument, SC) 27 



17 Dense surface mat of minute rootlets 28 



18 A remarkable example of multiple-trunked stool ing of Ogeechee 



tupelo at Sutton's Lake (Apalachicola River, FL) 34 



19 Oak displaying buttressing, common among bottomland hardwoods 35 



20 A windthrown diamondleaf oak on a small blackwater creek flood- 

 plain illustrates the large diameter of the root crown of 



bottomland hardwoods 36 



21 The correspondence between alluvial floodplain microtopography 



and forest cover types 38 



22 Microtopographic relief on a small blackwater creek floodplain .... 38 



23 A liverwort zone, the upper boundary of which indicates that high 



water has stayed at that level for at least 16% of the year 49 



24 The outermost swale along the Roanoke River (NC) 49 



25 Ogeechee tupelos on the Apalachicola River measuring 1 m DBH 



(diameter at breast height) 



50 



26 Scenic Ebenezer Creek is a unique variant of 



Zone II 50 



27 Drydown in water tupelo on Ebenezer Creek 51 



28 The outermost backswamp on an alluvial floodplain 51 



29 Tidal forest with characteristic interwoven mat of large roots 



close to the surface 52 



vn 



