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Table 7.   Predicted bycatch rates of turtles and estimated average annual bycatch in Mid-Atlantic bottom trawl gear, 1996-2004.

Latitude Zone Working Excluder Used Depth Zone SST Group Predicted Turtles/Days Fished VTR Average Days Fished 1996-2004 Observed Average Days Fished 1996-2004 Estimated Bycatch per Year Observer Coverage (% obs days fished/VTR days fished)
Lat3941 No ≥50m >18°C
0.0007
1977.18 9.55 1 0.5
≤18°C
0.0002
10660.17 81.42 2 0.8
<50m >18°C
0.0282
3279.64 13.02 92 0.4
≤18°C
0.0086
6071.10 46.32 52 0.8
Total 21988.09 150.31 147 0.7
Lat3438 No* ≥50m >18°C
0.0119
578.58 9.98 7 1.7
≤18°C
0.0036
1629.54 16.99 6 1.0
<50m >18°C
0.4813
588.64 7.63 283 1.3
≤18°C
0.1474
1088.10 9.47 160 0.9
Yes ≥50m >18°C
0.0013
0 NC 0 0.0
≤18°C
0.0004
1.64 0.03 0 1.8
<50m >18°C
0.0529
124.05 0.83 7 0.7
≤18°C
0.0162
352.44 2.94 6 0.8
Total 4362.99 47.87 469 1.1
Grand Total 26351.1 198.18 616 0.8
*Accounts for hauls with non-working TEDs

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(Modified Nov. 25 2008)