The fleets designations were made after an exploratory cluster analysis study
Note:
1 indicates a gear code < 1% of total landings
1,2 indicates a gear code < 0.1% of total landings
All other gear codes make up the majority (99%) of the landings. For these gear codes each species contribution to the total landings (aggregated over time) are shown as percentages
Species of interest are bolded
gearData <- readRDS(file=paste0(here::here("data-raw/data","timeSeriesSpeciesByGear.rds")))
gearData$data %>% dplyr::filter(NEGEAR2==gearCode)Demersal (large mesh > 3”)
05 - OTTER TRAWL, BOTTOM (cod (16%), yellowtail fl (15%), haddock (12%), silver hake (10%), winter fl (8%), loligo (6%) + 33% other bottom) - Large and small mesh - 7,323,551,019 lbs
1 16 - DANISH SEINE (cod, witch fl, yellowtail flounder, winter fl, plaice, silver hake) - 5,194,870 lbs
1 36 - SCOTTISH SEINE (silver hake, cod, plaice, witch fl, yellowtail flounder, winter fl, red hake) - 4,521,702 lbs
1 35 - BEAM TRAWL (summer flounder, winter flounder, yellowtail flounder) - 927,806 lbs
1 32 - FYKE NET (winter fl, windowpane fl, dogfish, skates) - 1,602 lb
Demersal (small mesh <= 3”)
Predominantly Silver Hake, White Hake, Butterfish, Short fin, and long fin squid
05 - OTTER TRAWL, BOTTOM (cod (16%), yellowtail fl (15%), haddock (12%), silver hake (10%), winter fl (8%), loligo (6%) + 33% other bottom) - Large and small mesh - 7,323,551,019 lbs
Fixed Gear
10 - GILL NET, FIXED (dogfish (22%), cod (22%), goosefish (20%), winter skate/skates (21%), pollock (6%)) - 417,501,765 lbs
01 - LONGLINE, BOTTOM (cod (40%), dogfish (21%), tilefish (20%), haddock (9%) + pollock , white hake) - 234,755,227 lbs
02 - HANDLINE (cod(42%), scup (15%), tuna (13%), spiny dogfish(6%), mackerel (5%)) -72,859,422 lbs
1 50 - GILL NET (angler, bluefish, skate, dogfish) - 789,780 lbs
1 52 - GILL NET (skate, angler, haddock, swordfish, mackerel, cod ) - 367,823 lbs
Trap
14 - POUND NET (loligo (35%) , scup (20%), mackerel (20%), many other < 5%) - 39,571,508 lbs
1 26 - WEIR (loligo, mackerel, scup) - 3,094,066 lbs
1 8 - FLOATING TRAP (mackerel, scup, loligo, tuna) - 1,850,040 lbs
Pelagic
17 - MIDWATER OTTER TRAWL (Mackerel (7%), Herring (91%)) - 598,176,314 lbs
37 - MIDWATER OTTER TRAWL (Mackerel (11%) , Herring (88%)) - 367,414,353 lbs
12 - PURSE SEINE (1970’s menhaden (40%), Tuna (34%), Herring (5%)) - 41,291,228 lbs
Scallop
13 - DREDGE, SCALLOP (scallop (88%) (Goosefish , yellowtail, bottom fish)) - 733,761,209 lbs
Other shellfish
38 - DREDGE (mussel(40%), sea scallop(30%), clam+quahog (17%) + bottom fish) - 48,683,622 lbs
1 25 - RAKES (quahog, soft clam, mussels, crab, oysters) - 13,153,618 lbs
1 41 - TONGS AND GRABS (quahog, soft clam, surf clam) - 232,351 lbs
1 22 - HOES/FORK (soft clam, oysters, bay scallop) - 217,491 lbs
Lobster/Crab
20 - POT/TRAP (lobster(53%) + crab(46%), bottom fish < 1%) - 340,059,280 lbs
18 - POTS + TRAPS (crab (20%), lobster (20%), whelk (10%), snails (10%), hagfish (20%) + bottom fish (20%)) - 79,123,496 lbs
30 - POTS + TRAPS (crab (>99%)) - 68,329,188 lbs
21 - POT/TRAP (Lobster (88%), crab (10%) + bottom fish) - 39,633,570 lbs
1 23 - BY HAND (soft clam, crab, quahog, oysters, clam) - 1,665,727 lbs
1 33 - DIVING GEAR (lobster, sea urch, squid) - 878,986 lbs
1 15 - TRAWL (lobster, 1972,1974) - 21,437 lbs
1 19 - POTS + TRAPS (rock crab, lobster, 2004) - 23525 lbs
1 53 - TRAMMEL NET (lobster , 2012) - 193 lbs
HMS
1 3 - HARPOONS (Tuna, swordfish)
1 11 - GILL NET, DRIFT (swordfish, tuna, shark )
1 6 - TROLL LINE (Tuna, sea herring, striped bass, bluefish)
1 4 - LONGLINE (swordfish, tunas, tilefish)
Other gear
1 28 - DREDGE (southern flounder, 1989-1997)
1 27 - BOX TRAP (cod, angler, lobster, 2004)
1 99 - UNKNOWN (silver hake, oysters, lobster, quahog, sea herring, angler, mussels )
1,2 44 - WEEDWHACKER, SEAWEED (whelks, 2016)
1,2 31 - LIFT NET (lobster, 2002)
1,2 34 - CAST NETS (quahog, surf clam, skate, plaice )
1,2 81 - SUCTION PUMP ()
1,2 45 - TRAWL, SHRIMP (crustacean, 2017)
1,2 9 - DIP NET (alewife, yellow flounder, scallop, soft clam)
1,2 7 - HAUL SEINE (perch, alewife, cod, winter flounder, lobster)
Data
The resulting data set is in the data package as fleets.
Since the current length based model, Hydra, includes three fleets, the
fleet designations are reduced further to map to the requirements of the
Hydra model.
fleetName |
NEGEAR2 |
hydraFleets |
|---|---|---|
demersal |
05 |
demersal |
demersal |
16 |
demersal |
demersal |
32 |
demersal |
demersal |
35 |
demersal |
demersal |
36 |
demersal |
fixedGear |
01 |
fixedGear |
fixedGear |
02 |
fixedGear |
fixedGear |
10 |
fixedGear |
fixedGear |
50 |
fixedGear |
fixedGear |
52 |
fixedGear |
traps |
08 |
fixedGear |
traps |
14 |
fixedGear |
traps |
26 |
fixedGear |
pelagic |
12 |
pelagic |
pelagic |
17 |
pelagic |
pelagic |
37 |
pelagic |
scallop |
13 |
demersal |
surfcalm |
40 |
demersal |
otherShellfish |
22 |
demersal |
otherShellfish |
25 |
demersal |
otherShellfish |
38 |
demersal |
otherShellfish |
41 |
demersal |
lobsterCrab |
20 |
fixedGear |
lobsterCrab |
18 |
fixedGear |
lobsterCrab |
30 |
fixedGear |
lobsterCrab |
21 |
fixedGear |
lobsterCrab |
23 |
fixedGear |
lobsterCrab |
33 |
fixedGear |
lobsterCrab |
15 |
fixedGear |
lobsterCrab |
19 |
fixedGear |
lobsterCrab |
53 |
fixedGear |
hms |
03 |
fixedGear |
hms |
04 |
fixedGear |
hms |
06 |
fixedGear |
hms |
11 |
fixedGear |
other |
28 |
other |
other |
27 |
other |
other |
99 |
other |
other |
44 |
other |
other |
31 |
other |
other |
34 |
other |
other |
81 |
other |
other |
45 |
other |
other |
09 |
other |
other |
07 |
other |