442 
Fishery Bulletin 11 5(4) 
Table 3 
Percent frequency of occurrence (PFO) and percent contribution of average proportions and average individual 
weights per station to the first 2 dimensions of correspondence analysis (CA1 and CA2) for fish and macroinver¬ 
tebrate taxa that had at least a 10% frequency of occurrence in bottom trawl samples collected in the vicinity of j 
wind energy areas on the northeast U.S. continental shelf during the spring of 2014. For the ordination plot of 
the analysis, see Figure 5. 
Classification 
Taxon 
PFO 
Percent contribution of CA1 and CA2 
Average proportion Average individual 
of taxon per station weight per station 
Mollusca 
Placopecten magellanicus 
28.2 
0.0011 
0.2433 
Decapodiformes 
53.8 
0.2941 
1.0434 
Merostomata 
Limulus polyphemus 
12.8 
1.5450 
22.7470 
Crustacea 
Unclassified shrimp 
15.4 
0.0004 
0.0554 
Homarus americanus 
33.3 
1.6580 
0.9347 
Brachyura 
74.4 
0.6235 
1.4495 
Pelagic fish 
Alosa spp. 
66.7 
3.0492 
1.3781 
Clupea harengus 
94.9 
11.7095 
0.6319 
Merluccius bilinearis 
89.7 
0.5675 
0.1974 
Stenototnus chrysops 
20.5 
3.9466 
7.2997 
Scomber scombrus 
17.9 
0.0001 
0.0162 
Peprilus spp. 
20.5 
2.2370 
1.0757 
Demersal fish 
Squalus acanthias 
43.6 
5.2427 
33.3815 
Leucoraja spp. 
100.0 
19.1962 
3.1704 
Melanogrammus aeglefinus 
28.2 
3.1472 
1.5533 
Urophycis chuss 
64.1 
0.2408 
2.9577 
Urophycis regia 
33.3 
0.2033 
3.1282 
Prionotus spp. 
53.8 
0.0293 
2.7215 
Myoxocephalus octodecemspinosus 
48.7 
1.6763 
3.9863 
Hemitripterus americanus 
15.4 
0.0857 
14.4757 
Centropristis striata 
30.8 
2.1206 
9.3053 
Zoarces americanus 
33.3 
1.3455 
5.5046 
Scophthalmus aquosus 
74.4 
0.7544 
1.8307 
Etropus spp. 
25.6 
0.0028 
0.0687 
Paralichthys oblongus 
25.6 
0.4396 
3.5277 
Paralichthys dentatus 
53.8 
0.3313 
8.4038 
Limanda ferruginea 
28.2 
0.3330 
3.0043 
Pseudopleuronectes americanus 
74.4 
0.9314 
4.1960 
trawl at collecting juveniles (or younger age classes, <2 
years old) for some taxa. Conversely, the lack of collec¬ 
tions of other abundant demersal fish (e.g., spiny dog¬ 
fish; haddock; yellowtail flounder ( Limanda ferrugin- 
ea ); winter flounder ( Pseudopleuronectes americanus ); 
and summer flounder ( Paralichthys dentatus)) and a 
lack of pelagic fish (e.g., Alosa spp.; Atlantic herring; 
Atlantic mackerel ( Scomber scombrus)', and Peprilus 
spp.), regardless of size, indicate that the bottom trawl 
was more efficient in collecting a number of fish taxa 
(Suppl. Table) (online only). 
The variation in catch composition by gear type 
indicated that CA assemblage structures separated 
by gear type. Visualization of the first 2 dimensions 
of the CA ordination described the overall pattern of 
assemblages associated with each gear type (Fig. 3). 
The first 2 dimensions explained 30.8% of the variance 
in assemblages, with eigenvalues of 0.81 and 0.41 re¬ 
spectively. Taxa that contributed significantly (>1%; 
Table 1) to the ordination highlight the different com¬ 
munities collected by each gear (Fig. 3). The collections 
made with the 2 gear types separated from each other 
along the first dimension (Fig. 3A) and average propor¬ 
tion of taxa per station (90.7%) contributed most to the 
separation of assemblages (Fig. 3B). The beam trawl 
was stretched along the first dimension and had higher 
station proportions of unclassified shrimp, brachyuran 
crabs, sea scallop iPlacopecten magellanicus), Etropus 
spp., and red hake. The close association of sea scallop 
and red hake in ordination space may be related to 
their inquiline relationship, where benthic juvenile red 
hake live in the mantle of live sea scallop (Able and 
Fahay, 1998). The collections made with the bottom 
trawl appear to the left of the origin and had a higher 
proportion of Leucoraja spp., and the bottom trawl was 
the only gear to sample Alosa spp. and spiny dogfish 
(Fig. 3B). The second dimension aligned with the WEA 
location, particularly for the collections made with the 
