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The northern portion of the Atlantic Coastal Plain is characterized 

 by drowned river valleys, the best example of which is the Chesapeake 

 Bay. The Chesapeake Bay is a unique estuary comprised of the drowned 

 Susquehanna River Valley and several of its tributaries. The bay is 

 unique because of its size and isolation from the Atlantic. Appendix "X" 

 is a breakdown of the major plant community types with an indication of 

 some of the critical environmental factors (limiting factors) controlling 

 the community. After each description of a plant community type, some 

 of the typical animal species found in the community are listed. The 

 communities treated in that appendix are: 



Salt Marsh 

 Brackish Marsh 

 Freshwater Marsh 

 Cypress-Gum Swamp Forest 

 Bottomland Hardwood Forest 

 Upland Pine Forest 

 Upland Hardwood Forest 

 Old Field Community 



