Smooth Bottom Net Trawl Fishing Gear Effect on - New England ...

<strong>Trawl</strong>
Station
Results of 2002 REMOTS Surveys to Evaluate the <strong>Effect</strong>s
of <strong>Trawl</strong>ing on Soft-<strong>Bottom</strong> Habitat in Massachusetts Bay
Table 3.5-2.
Summary of REMOTS Sediment-Profile Imaging Results for the
Mud Hole <strong>Trawl</strong> Stations (top) and Control Stations (bottom), August 2002 Survey
(Unless otherwise indicated, values in this table are means for n=3 replicate images at each station)
1A 3 to 2 phi (1), 4 to 3 phi (2) 4.5 0.8 SA.F (1), UN.SS (2) ST I (3) 2.2 4.3
1B 4 to 3 phi (3) 6.8 0.8 UN.SS (3) ST I (2), ST I to II (1) 2.7 5.7
1C 4 to 3 phi (3) 7.2 1.1 UN.SI (1), UN.SS (2) ST I (2), ST I on III (1) 3.6 7.7
3A 4 to 3 phi (3) 9.4 0.9 UN.SI (1), UN.SS (2) ST I (3) 2.9 5.0
3B 4 to 3 phi (3) 6.7 2.6 SA.F (1), UN.SS (2) ST I (2), ST I on III (1) 3.3 7.3
3C 3 to 2 phi (1), 4 to 3 phi (2) 6.7 1.3 SA.F (2), UN.SS (1) ST I (3) 1.8 4.0
AVG 6.9 1.2 2.7 5.7
MAX 9.4 2.6 3.6 7.7
MIN 4.5 0.8 1.8 4.0
Control
Station
Grain Size Major
Mode (# replicates)
Camera
Penetration Mean (cm)
Boundary Roughness
Mean (cm)
Benthic Habitat
(# replicates)
Successional Stages
Present (# replicates)
RPD Mean
(cm)
3 to 2 phi (1), 4 to 3 phi (2) 3.8 0.8 SA.F (1), UN.SI (1), UN.SS (1) ST I (3) 2.3 4.7
2B 3 to 2 phi (1), 4 to 3 phi (2) 4.6 1.6 SA.F (1), UN.SS (2) ST I (3) 2.7 5.0
2C 4 to 3 phi (3) 6.6 1.0 SA.F (1), UN.SS (2) ST I on III (3) 2.5 8.7
3A 4 to 3 phi (3) 9.4 0.9 UN.SI (1), UN.SS (2) ST I (3) 2.9 5.0
3B 4 to 3 phi (3) 6.7 2.6 SA.F (1), UN.SS (2) ST I (2), ST I on III (1) 3.3 7.3
3C 3 to 2 phi (1), 4 to 3 phi (2) 6.7 1.3 SA.F (2), UN.SS (1) ST I (3) 1.8 4.0
AVG 6.3 1.4 2.6 5.8
MAX 9.4 2.6 3.3 8.7
MIN 3.8 0.8 1.8 4.0
SAIC
Grain Size Major
Mode (# replicates)
Camera
Penetration Mean (cm)
Boundary Roughness
Mean (cm)
Benthic Habitat
(# replicates)
Successional Stages
Present (# replicates)
RPD Mean
(cm)
OSI Mean
OSI Mean