Table 6.

Average numbers of burrows based on location in the marsh and diameters of the burrow openingsa

ParameterValue for:
Tall-form SpartinaShort-form SpartinaJuncus
Avg no. of burrows per m243.7 ± 1027.5 ± 47 ± 5
Avg diam of burrows (cm)1.56 ± 0.21.7 ± 0.50.76 ± 0.3
Avg vol of burrows (cm3)28 ± 838 ± 79 ± 2*
Total burrow water per m2 (liters)1.2 ± 0.71.0 ± 0.30.063 ± 0.04
Avg no. of Vibrionaceae m−26 × 1063.7 × 1064 × 105
Avg no. of V parahaemolyticus bacteria m−22 × 1061.4 × 1062.7 × 105
Total no. of Vibrionaceae transported1.4 × 10148.9 × 1013NA
Total no. of V. parahaemolytica bacteria transported4.8 × 10133.4 × 1013NA
  • a Volume measurements of burrows in tall- and short-form Spartina are from a prior study (30). Total burrow water mass is estimated from 2007 burrow enumerations and diameters, utilizing McCraith's volume estimates (31).

  • * , Juncus volume estimate based on the current study's burrow diameter measurements and McCraith's estimates of burrow lengths. Juncus total burrow water volume is based on enumerations of the current study. Average Vibrionaceae and V. parahaemolyticus numbers per square meter were calculated using average numbers of CFU ml−1, burrow volume, and burrow abundances. To calculate total numbers of cells transported, the North Inlet area Spartina estimate of 24 km2 was used (10). NA, not available.