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Table 3. Presence (P) of mollusks that serve as key salinity and/or environmental indicators is shown on table. Note: this list does not represent all mollusks present in the samples. Also, three cores were not processed (Lostmans River, First and Second Bay cores and Harney core near water monitoring station); mollusks were examined in the samples during description, and are therefore biased towards the larger taxa. "No visible shell material" means no obvious molluscan shell material present. Closer examination of samples may indicate occurrences of mollusks.

Core Depth
(in cm)		 Examined but no identifications Freshwater Mollusks Estuarine Mollusks         ----------------------------------------> Estuarine to Marine
Minute - easily
"rafted" on
freshwater
currents		 Adult stages
large		 Very low salinity
(0-12 ppt)		 Common in Mesohaline
(5-18 ppt)		 Euryhaline - Tolerant of wide range of salinities but common in transition zones between fresh and estuarine waters in south Florida Polyhaline to Euhaline
Hydrobiid-like Physidae,
Lymnaeidae,
Planorbella,
Elimia- like		 Polymesoda
and/or
Cyrenoida		 Melampus Tagelus Ostreids Teredo Anomalocardia Lucina
pectinata		 Tellinidae Acteocina Bittiolum,
Bulla		 Columbellids,
Carditimera		 Parastarte
Lostmans River First Bay
(GLW705-FBLM1A) *		 0-8 Fragments                            
  8-9       P                      
  9-15 Fragments                            
  15-16           P P                
  16-52 Fragments or no visible mollusk material                            
  52-62   P (Rare)     P P   P     P P      
  62-92 Fragments or no visible mollusk material                            
  92-100 Fragments                            
  100-114.5             P     P P        
Lostmans River Second
Bay (GLW705-SBLM2A)		 0-9   P   P   P P P     P P P    
  9-22   P     P P P                
  22-42 Fragments or no visible mollusk material                            
  42-44         P                    
  44-72 Fragments or no visible mollusk material                            
  72-76       P P                    
  76-110.5 Fragments or no visible mollusk material                            
Core Depth
(in cm)		 Examined but no identifications Freshwater Mollusks Estuarine Mollusks         ----------------------------------------> Estuarine to Marine
Minute - easily
"rafted" on
freshwater
currents		 Adult stages
large		 Very low salinity
(0-12 ppt)		 Common in Mesohaline
(5-18 ppt)		 Euryhaline - Tolerant of wide range of salinities but common in transition zones between fresh and estuarine waters in south Florida Polyhaline to Euhaline
Hydrobiid-like Physidae,
Lymnaeidae,
Planorbella,
Elimia- like		 Polymesoda
and/or
Cyrenoida		 Melampus Tagelus Ostreids Teredo Anomalocardia Lucina
pectinata		 Tellinidae Acteocina Bittiolum,
Bulla		 Columbellids,
Carditimera		 Parastarte
South Harney River near
mouth (GLW705-		 0-26   P (rare)       P     P   P (abundant) P P P P
  26-54                 P P P (abundant) P P   P
  54-64   P (few)   P         P   P P P   P
  64-68 Fragments                            
  68-78           P     P   P P P   P
  78-114                     P P (rare) P (rare)    
  114-165.5       P (abundant)   P P   P P P P P P  
Harney River near water
monitoring station
(GLW705-HR2A) *		 0-20                 P (rare)   P (rare) P (rare) P (rare)    
  20-86 No visible mollusk material or rare fragments                            
  86-98.7   P (common)                 P (rare)        
Shark River near
entrance to Ponce de
Leon Bay (GLW705-		 0-5         P P P   P   P (abundant) P   P P
  5-20   P     P P P   P   P (abundant) P (abundant) P P P
  20-34             P   P   P P P   P
  34-36   P                 P P     P
  36-58             P   P   P P P P P
  58-74   P         P   P P P (abundant) P P   P
  74-90                 P   P P P   P
  90-98 Fragments or no visible mollusk material                            
  98-113.5           P P   P   P P P   P
Shark River north of main
channel (GLW705-SR2A)		 0-10   P     P           P P      
  10-64   P   P P     P P P P P   P
  64-102   P P             P P P P    
  102-144   P P                        
* The mollusk list was prepared from examination of the unprocessed sediment samples for the three cores indicated, and may be biased toward the larger specimens in these cores. Mollusk list for othe three cores was prepared from processed samples with sediments removed.

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