Table 4.3: Dominant taxa, species richness (no. taxa), total faunal density (no. per 0.02 m²) and diversity (Shannon Weiner) at the 4 benthic monitoring stations in 1998. Fall 1998 sampling occurred after the passage of Hurricane Bonnie. Percent of total fauna collected for that site/date combination is shown for common species.

Winter 1998 NCF6            Winter 1998 NAV                 Winter 1998 M31               Winter 1998 M54               

Species richness                  16           Species richness                   15          Species richness                  14          Species richness                   10
Total Faunal density            22.4         Total Faunal density           176.2       Total Faunal density           64.4        Total Faunal density             28.2
Faunal diversity                   0.92         Faunal diversity                   0.31        Faunal diversity                  0.88        Faunal diversity                   0.47
Common taxa:                                    Common taxa:                                    Common taxa:                                  Common taxa:
   Polypedilum sp.                21.4           Oligochaete sp.                 13.1           Bivalvia sp.(juv) 18.3                       Gammarus palustris           24.1
   Oligochaete sp.                  5.4           Marenzellaria sp.               81.3         Oligochaete sp.                 7.8          Marenzellaria virdis           64.5
  Marenzellaria virdis           21.4                                                                     Ostracoda sp.                   23.9                        
  Polydora socialis               21.4                                                                     Marenzellaria virdis           10.2                        
  Spio pettiboneae               11.6                                                                     Mediomastus spp.             6.2                          
                                                                                                                        Spionidae sp.                     9.9                          
                                                                                                                        Streblospio benedicti        19.3                        

Spring 1998 NCF6              Spring 1998 NAV                 Spring 1998 M31                 Spring 1998 M54     

Species richness                  7            Species richness                   11           Species richness                    8          Species richness                  7
Total Faunal density           13.5         Total Faunal density           33.8         Total Faunal density           109.4       Total Faunal density           25.4
Faunal diversity                  0.61         Faunal diversity                   0.49         Faunal diversity                   0.12       Faunal diversity                  0.38    
Common taxa:                                   Common taxa:                                     Common taxa:                                  Common taxa:
   Chironomid sp.               20.4            Oligochaete sp.                  71            Mediomastus spp.             94.9           Monoculodes sp.           7.1
   insect pupa                       5.6            Marenzellaria virdis           14.2                                                                      Marenzellaria virdis       76.4
  Oligochaete sp.                50                                                                                                                                  Mediomastus spp.          8.7
   Marenzellaria virdis          16.7                                                                                         

Sum 1998 NCF6                  Sum 1998 NAV                    Sum1998 M31                  Sum 1998 M54       

Species richness                  12           Species richness                  5             Species richness                    14         Species richness                  10
Total Faunal density           3.2           Total Faunal density           33.8         Total Faunal density            66.8         Total Faunal density           5.2
Faunal diversity                1.04           Faunal diversity                   0.48        Faunal diversity                   0.67        Faunal diversity                   0.8
Common taxa:                                    Common taxa:                                    Common taxa:                                   Common taxa:
   Monoculodes sp.           12.5              Oligochaete sp.                  83.7         Mulinia lateralis                  10.8         Mediomastus anbiseta     11.5
   Brachyuran zoea              6.3              Mediomastus spp.             8.2           Mediomastus ambiseta       41           Steblospio benedicti          50
   megalops                         6.3                                                                        Streblospio benedicti         32.9                        
   Rhithropanopeus harrisii  6.3                                                                                          
   Procladius sp.                  6.3                                                                                          
   Chirodotea caeca            6.3                                                                                          
   Nemertea sp.                 18.8                                                                                        
   Marenzellaria virdis        12.5                                                                                        
   Nereidae sp.                    6.3                                                                                          
   Polychaeta sp.                 6.3                                                                                          
   Polydora ligni                  6.3                                                                                          
   Polydora socialis             6.3          

Fall 1998 NCF6                   Fall 1998 NAV                     Fall 1998 M31                   Fall 1998 M54      

Species richness                 15         Species richness                   5            Species richness                  14        Species richness                  15
Total Faunal density         1.62         Total Faunal density            8.3          Total Faunal density              4         Total Faunal density           17.44
Faunal diversity                1.14         Faunal diversity                  0.19         Faunal diversity                  1.05      Faunal diversity                   0.62
Common taxa:                                 Common taxa:                                    Common taxa:                                Common taxa:
   Gammarus sp.                9.5           Oligochaete sp.                90.4            Acanthohaustorius sp.       5            Corophium lacustre           7.6
   Nemertea sp.                 9.5                                                                       Chirodotea caeca             5            Gammarus palustris            7
   Oligochaete sp.            14.3                                                                       Bivalvia sp.                     15            Mediomastus anbiseta       62.4
   Nereidae sp.                  9.5                                                                       Thysanura                        5             Mediomastus sp.              10.8
   Onuphis sp.                    9.5                                                                      Aceteocina canaliculata     5                             
                                                                                                                    Bowmaniella floridana       5
                                                                                                                    Neomysis americana          5
                                                                                                                    Chirodotea caeca             5
                                                                                                                    Marenzellaria virdis           5                             
                                                                                                                    Mediomastus spp.            5                             
                                                                                                                    Prionospio sp.                  5                             
                                                                                                                    Streblospio benedicti       25
                                                                                                                    Synelmis sp.                     5