FIGURES (continued) 

 Number Page 



30 Three shoreline dominants, sweet bay, red cedar, and cabbage 

 palm, characteristic of the tidal zone of an alkaline 



blackwater river 53 



31 A small grove of virgin cypress preserved on Lewis Island 54 



32 Large overcup oaks occupy depressions (Zone III) in the dominantly 



Zone IV floodplain of the Congaree Swamp National Monument 57 



33 Sweetgum giants in the Congaree Swamp National Monument 61 



34 Many Zone IV bottomland hardwoods on Coastal Plain alluvial 



river floodplains have an understory of Sabal mino r 61 



35 The floodplain of the blackwater Canoochee is somewhat anomalous 

 in the co-dominance of the diamondleaf oak with either spruce 



pine or loblolly pine 62 



36 Normally an upland species, the loblolly pine also grows in 



Zone V areas of many floodplains 65 



37 An old levee ridge near Cedar Creek supporting Zone V vegetation ... 66 



38 Narrow, long ridges between swales on the lower Roanoke flood- 

 plain (NC) of probable late Pleistocene age have an almost 

 diagrammatic zonation of Zone V hardwoods 67 



39 An example of understory species taking advantage of the dry 

 environment of a floating log in order to exist in Zone II 75 



40 Cross-sectional transects (aspect is looking downstream) of 

 nine southeastern rivers and floodplains, indicating zones 



(I-V) and major vegetational and natural features 77 



41 A windthrown bitternut hickory on the floodplain of the 



Murder Creek Special Management Area 79 



42 Aerial view of relict rice fields on former bottomland hardwood 



forests that are presently managed for waterfowl 80 



43 The effect of a gradient of flooding on productivity as compared 

 with a regional level that might be expected in the absence of 



standing or flooding water 81 



44 Organic matter production in ecological zones 83 



vn 1 



