Table 4.1: 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 1996. Fall 1996 sampling occurred after the passage of Hurricane Fran. Percent of total fauna collected for that site/date combination is shown for common species.

Winter 1996 NCF6              Winter 1996 M54                 Winter 1996 NAV                 Winter 1996 M31                

Species richness                  24            Species richness                  27            Species richness                  20          Species richness                   14
Total Faunal density           15.7         Total Faunal density           105.7         Total Faunal density           103.6       Total Faunal density             10.67
Faunal diversity                   0.95         Faunal diversity                   0.62          Faunal diversity                    0.3        Faunal diversity                     0.78
Common taxa:                                    Common taxa:                                      Common taxa:                                   Common taxa:
  Mulinia sp.                        7.2             Procladius sp.                    6.2             Mediomastus spp.             86.5           Gammarus palustris           19.8
  Gammarus tigrinus             5.7             Oligochaete sp.                 67.8                                                                      Oligochaete sp.                 12.5
  Chironomid sp.                 31.8           Ostracoda sp.                     7.1                                                                       Mediomastus spp.            44.8
  Oligochaete sp.                 20.4                        

Spring 1996 NCF6                Spring 1996 NAV                 Spring 1996 M31                  Spring 1996 M54                 

Species richness                  19            Species richness                  22          Species richness                  15           Species richness                  14
Total faunal density              19.2         Total faunal density            131          Total faunal density            144.2       Total faunal density                3
Faunal diversity                   0.092       Faunal diversity                  0.74         Faunal diversity                   0.27        Faunal diversity                   0.47
Common taxa:                                    Common taxa:                                       Common taxa:                                Common taxa:
  Amphipoda sp.                   10.4           Polypedilum sp.               5.6             Marenzellaria virdis           88.3           Monoculodes sp.            11.7
  Gammarus mucronatus        6.3             Procladius sp.                  6.7                                                                       Marenzellaria virdis         73.2
  Gastropoda sp.                   7.3             Oligochaete sp.               43.4                                                                        
  Procladius sp.                     8.3             Marenzellaria virdis          29.9                                                        
  Marenzellaria virdis             42.7                                                                        

Sum 1996 NCF6                     Sum 1996 NAV                   Sum1996 M31                       Sum 1996 M54                   

Species richness                  10           Species richness                   5             Species richness                  19          Species richness                  12
Total Faunal density           17.6         Total Faunal density            43.2         Total Faunal density           29.8         Total Faunal density           13.8
Faunal diversity                   0.75         Faunal diversity                   0.16         Faunal diversity                   1            Faunal diversity                   0.81
Common taxa:                                    Common taxa:                                     Common taxa:                                  Common taxa:
  Polypedilum sp.                34.1           Oligochaete sp.                  92.1               Monoculodes sp.         8.1             Monoculodes sp.               7.2
  Procladius sp.                   26.1                                                                           Laeonereis culveri      20.1            Eusymmerus sp.                 7.2
  Cyathura sp.                     15.9                                                                           Marenzellaria virdis    11.4           Oligochaete sp.                  42
  Oligochaete sp.                  9.1                                                                            Mediomastus spp.     26.2            Laeonereis culveri              5.8
  Tanaidacea sp.                   6.8                                                                            Nereis falsa                5.4             Marenzellaria virdis           11.6
                                                                                                                             Streblospio benedicti  7.4             Mediomastus spp.            15.4    

Fall 1996 NCF6                       Fall 1996 NAV                  Fall 1996 M31                         Fall 1996 M54                   

Species richness                  4            Species richness                  12            Species richness                    20          Species richness                  14
Total Faunal density           2.2          Total Faunal density             61            Total Faunal density             27.8         Total Faunal density           4.41
Faunal diversity                 0.45         Faunal diversity                 0.46           Faunal diversity                   0.82         Faunal diversity                  0.89
Common taxa:                                  Common taxa:                                     Common taxa:                                     Common taxa:
  Chaoborus albatus           9.1             Procladius sp.                 13.1              Capitellidae sp.                   5.2             Daphnia sp.                    35.8
  Oligochaete sp.              63.6            Oligochaete sp.                72.1             Mediomastus ambiseta     20.2             Chironomid sp.                 5.7
  Nereidae sp. (juv)            9.1                                                                        Mediomastus californienses 5.8             Polypedilum sp.              15.1
  Streblospio benedicti      18.2                                                                        Mediomastus spp.             46.13         Oligochaete sp.               17                                                                                                                                                                                   Mediomastus spp.            5.7