Table 4.4: Dominant taxa, species richness (no. taxa), total faunal density (no. per 0.02 m²) and diversity (Shannon Weiner) at the 4 benthic stations in 1999. Fall 1999 sampling occurred after the passage of Hurricane Floyd. Percent of total fauna collected for that site/date combination is shown for common species.

Winter 1999 NCF6              Winter 1999 NAV                 Winter 1999 M31                   Winter 1999 M54      

Species richness                  6            Species richness                     13         Species richness                  28          Species richness                    13
Total Faunal density             2           Total Faunal density              13.4        Total Faunal density            146         Total Faunal density             9.8
Faunal diversity                 0.7           Faunal diversity                     0.78        Faunal diversity                  1.01        Faunal diversity                   0.96
Common taxa:                                  Common taxa:                                      Common taxa:                                  Common taxa:
   Gammarus mucronatus     10            Coelotanypus sp.                 7.5            Mediomastus ambiseta    37.5           Corophium bonelli             12.2
   Chironomid sp.               10            Oligochaete sp.                   11.9           Mediomastus sp.             13.3           Gammarus sp.                     6.1
   Collembola sp.                 10            Tubificoides heterochaetus  49.3          Paraprionospio pinnata      7.5           Bivalvia sp.                         6.1
   Casidimidea lunifrons        40            Ostracoda sp.                     10.4         Streblospio benedicti         9.9           Mediomastus ambiset        32.7
  Oligochaete sp.               10                                                                                                                                 Parandalia sp.                     6.1
   Mediomastus ambiseta     20                                                                                                                                 Parandalia sp. A               12.2  

Spring 1999 NCF6               Spring 1999 NAV                 Spring 1999 M31                    Spring 1999 M54      

Species richness                  26         Species richness                     35         Species richness                    26         Species richness                   16
Total Faunal density            35          Total Faunal density            31.33       Total Faunal density           15.8          Total Faunal density           16.8       
Faunal diversity                1.12          Faunal diversity                    1.29        Faunal diversity                  1.21         Faunal diversity                  0.88
Common taxa:                                  Common taxa:                                     Common taxa:                                       Common taxa:
   Bivalvia sp.                     5.7             Bivalvia sp.                          5.7           Monoculodes edwardsi    10.1           Monoculodes sp.            21.8
   Bivalvia sp (juv)             10.3           Corbicula sp.                       7.4           Bivalvia sp. (juv)               6.3             Marenzellaria sp              5.9
  Cladotanytarsus sp.          12              Oligochaete sp.                  18.6          Mediomastus sp.               5.1             Mediomastus spp.         10.9
   Insect pupa                     22.9           Tubificoides heterochaetus  10.6          Mediomastus spp.             5.1             Parandalia sp.               37.6
  Oligochaete sp.                 6.3            Ostracoda sp.                    10.1           Parandalia sp.                   6.3                          
   Polydora socialis             14.9                                                                       Parandalia sp. A               19                           
                                                                                                                        Streblospio benedicti        15.2                        

Sum 1999 NCF6                   Sum 1999 NAV                     Sum1999 M31                      Sum 1999 M54        

Species richness                  16           Species richness                     11         Species richness                   19          Species richness                   20
Total Faunal density           185.4       Total Faunal density             147.2       Total Faunal density           19.81        Total Faunal density           16.4
Faunal diversity                   0.49        Faunal diversity                    0.15         Faunal diversity                   1.01        Faunal diversity                  1.09
Common taxa:                                   Common taxa:                                      Common taxa:                                   Common taxa:
   Bocardiella sp. A              65.6           Tubificoides heterochaetus  94             Spisula solidissima            21.2          Spisula solidissima            8.5
  Polydora socialis               20.4                                                                      Glycera sp.                      11.1          Oxyurostylis smithi            7.3
   Polydora sp.                      2.3                                                                       Mediomastus ambiseta     26.3          Mediomastus ambiseta       11
                                                                                                                         Parandalia sp. A               7.1           Streblospio benedicti        30.5
                                                                                                                          Streblospio benedicti        8.1                          

Fall 1999 NCF6                    Fall 1999 NAV                     Fall 1999 M31                      Fall 1999 M54      

Species richness                  32          Species richness                      31          Species richness                  8            Species richness                  15
Total Faunal density           16.7         Total Faunal density              59.2         Total Faunal density           39.5         Total Faunal density           11.4
Faunal diversity                  1.15         Faunal diversity                     0.78         Faunal diversity                 0.24         Faunal diversity                  0.91
Common taxa:                                   Common taxa:                                       Common taxa:                                  Common taxa:      
    Bivalvia sp. (juv)               7.8            Coelotanypus sp.                 5.7            Mediomastus anbiseta      84.3          Gammarus tigrinus            14
   Gastropoda sp.                28.7           Oligochaete sp.                    15             Parandalia sp. A              92.9          Monoculodes edwarsi        7
   Polypedilum sp.               15.6           Tubificoides heterochaetus   55.2                                                                   Mediomastus ambiseta     25.4
   Polypedilum tritum            7.2                                                                                                                                 Mediomastus spp.             1
   Oligochaete sp.                 5.4                                                                                                                                 Parandalia sp.                  14.9
                                                                                                                                                                                                                                             Parandalia sp. A               14.9