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

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NOAA/NMFS Unallied Science Project, Cooperative Agreement NA16FL2264 December 2005 <strong>Smooth</strong> <strong>Bottom</strong> <strong>Net</strong> <strong>Trawl</strong> <strong>Fishing</strong> <strong>Gear</strong> <strong>Effect</strong> on the Seabed: Investigation of Temporal and Cumulative <strong>Effect</strong>s BKAM/CR Figure 3.4-11a. Mud Hole 2001 and 2002 Cluster Analysis; Averaged Replicates Figure 3.4-11b. Mud Hole 2001 and 2002 Cluster Analysis; All Replicates Figure 3.4-12a. Little Tow 2001 and 2002 Cluster Analysis; Averaged Replicates Figure 3.4-12b. Little Tow 2001 and 2002 Cluster Analysis; All Replicates Figure 3.4-13 Mud Hole 2001 and 2002 Principal Components Analysis; Averaged Replicates Figure 3.4-14 Little Tow 2001 and 2002 Principal Components Analysis; Averaged Replicates Subsection 3.5 REMOTS Results Figures Figure 3.5-1. Representative REMOTS images illustrating baseline seafloor conditions in the Little Tow area Figure 3.5-2. Representative REMOTS images illustrating baseline seafloor conditions in the Mud Hole area Figure 3.5-3. Time series of representative REMOTS images obtained at Little Tow trawl station 3A Figure 3.5-4. Time series of representative REMOTS images from Little Tow trawl station 1A showing an absence of any significant changes in sediment physical or biological characteristics attributable to trawling disturbance (similar to Figure 3-3) Figure 3.5-5. Time series of representative REMOTS images from Mud Hole trawl station 3A illustrating the continued persistence through time of Stage I polychaete tubes at the sediment surface and a well-developed RPD, despite intensive trawling following the August survey Figure 3.5-6. Time series of representative REMOTS images from Mud Hole trawl station 1C illustrating the continued persistence through time of Stage I polychaete tubes at the sediment surface and a well-developed RPD, despite intensive trawling following the August survey Figure 3.5-7. Two representative images from the October survey in the Little Tow area, showing a lack of difference in sediment physical or biological features between control station 2C and trawl station 3A Figure 3.5-8. Two representative images from the November survey in the Mud Hole area, showing a lack of difference in sediment physical or biological features between control station 2A and trawl station 3A viii
NOAA/NMFS Unallied Science Project, Cooperative Agreement NA16FL2264 December 2005 <strong>Smooth</strong> <strong>Bottom</strong> <strong>Net</strong> <strong>Trawl</strong> <strong>Fishing</strong> <strong>Gear</strong> <strong>Effect</strong> on the Seabed: Investigation of Temporal and Cumulative <strong>Effect</strong>s BKAM/CR Subsection 3.6 Fisheries Results Figures Figure 3.6-1 <strong>Trawl</strong> catch for major species in kilograms for Mud Hole and Little Tow combined Figure 3.6-2 Catch by species in kilograms per tow for Mud Hole and Little Tow combined Figure 3.6-3 Catch in kilograms by site and trawl lane over the study period Figure 3.6-4 Density in kilograms/1000m 2 for major trawl caught species at Mud Hole, Lanes 1 and 3 Figure 3.6-5 Density in kilograms/1000m 2 for major trawl caught species at Little Tow, Lanes 1 and 3 Figure 3.6-6 Density in kilograms/1000m 2 for Spiny Dogfish along trawled lanes at Mud Hole and Little Tow Figures 3.6-7 Density (number per 1000m 2 ) of major commercial flatfish along trawled lanes in Mud Hole and Little Tow Figure 3.6-8 Length frequency distribution for Winter Flounder at Mud Hole in 2002 Figure 3.6-9 Length frequency distribution for Yellowtail Flounder at Mud Hole in 2002 Figure 3.6-10 Length frequency distribution for Winter Flounder at Little Tow in 2002 Figure 3.6-11 Length frequency distribution for Yellowtail Flounder at Little Tow in 2002 PHOTOGRAPHS Photograph 1.3-1 F/V Christopher Andrew Photograph 1.3-2 F/V Yankee Rose Photograph 2.2-1 Fisherman John Shea and Christopher Dunbar of CR Environmental dumping a catch of flounder and dogfish from a 10-minute experimental tow at one of the trawled Little Tow lanes Photograph 2.2-2 Christopher Dunbar of CR Environmental and fisherman Frank Mirarchi measuring flatfish from an experimental trawl Photograph 2.5-1a-c. Side-scan sonar operations Photograph 2.6-1 a-c. Sediment sampling operations Photograph 2.6-2 Chip Ryther and Chris Dunbar of CR Environmental recovering the video grab system on the F/V Christopher Andrew ix
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NOAA/NMFS Unallied Science Project,
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effective if the process of immigra
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effort, the critical pulse disturba
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Maciolek, N.J., R.J. Diaz, D. Dahle
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Table 3.3-2. Organisms observed per
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Table 3.3-4. Organisms observed per
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Table 3.3-5. Comparison of 2001 ROV
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Station LT02-1B - P2 Trawl<
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Station LT02-3A Trawl</stro
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Station LT02-4A - P1 Control Lane O
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Trawl Station Resu
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Trawl Station Resu
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Trawl Station Resu
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Table 3.6-2 2002 Trawl</str
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Table 3.6-3 (continued) CRUSTACEA A
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Table 3.6-5 Summary of Blackback (W
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Table 3.6-5 (continued) OTHERS Sarc
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Table 3.6-7 Dominant Species in Sed
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FIGURES
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Figure 1.0-2. Smooth</stron
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Figure 1.0-4 Side-scan sonar base m
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Figure 3.2.1-2 Bathymetric surface
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Number/minute 4 3 2 1 0 July Octobe
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Number/minute Number/minute 4 3 4 2
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Number/minute Number/minute 30 20 1
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Number/minute Number/minute 2.5 2 1
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Number/minute Number/minute July -
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Figure 3.4-2 For key species, the a
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Figure 3.4-4 For key species, the a
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Figure 3.4-6: Cluster analysis of M
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Figure 3.4-9 Little Tow 2002 Cluste
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Figure 3.4-12a. Little Tow 2001 and
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Note: [LT02 = Little Tow 2002 sampl
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Results of 2002 REMOTS Surveys to E
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Kg/Tow 200 180 160 140 120 100 80 6
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Kg/1000m2 Kg/1000m2 7 6 5 4 3 2 1 0
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Kg per 1000m2 350 300 250 200 150 1
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Numbe of individuals Number of Indi
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Number of individuals Number of ind
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PHOTOGRAPHS
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Photograph 2.2-2 Christopher Dunbar
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a. Chris Dunbar sieving benthic sam
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Photograph 2.7-1 CR Environmental e
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a. Fisherman Andrew Mirarchi viewin
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2001 2002 Cobble Bottom</st
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MH-3A July 2002 Pre-Trawl</
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MH-4A July 2002- Pre-Trawl<
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LT-1B July 2002- Pre-Trawl<
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LT-3A July 2002- Pre-Trawl<
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LT-4A July 2002- Pre-Trawl<
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Cobble bottom at Little Tow Small r
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2001 2002 Flounder Rock Crabs Sea S
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