Contente and Rossi-Wongtschowski Fish assemblages in the southeastern Brazilian Bight 
229 
Table 5 
Results of permutational multivariate analysis of variance to test for differences in fish as- 
semblage structure among water masses (WM) and the ECOSAR III— VI I cruises. Because of 
the unbalanced design, we used type-I sums of squares and tested the effect of one factor 
given the effect of another. The variance component of the interaction term was negative in 
both cases; therefore, it was pooled, and the data were re-analyzed. Significant P-values are 
presented in bold. SS=sum of squares; MS=mean sum of squares. 
Source of variation 
df 
SS 
MS 
Pseudo-E 
P 
WM, cruise | WM 
WM 
2 
12,570 
6285.2 
14.29 
0.0325 
Cruise 
4 
19,442 
4860.4 
1.14 
0.1827 
Pooled 
71 
3.04xl0 9 
4282.2 
Total 
77 
3.36xl0 9 
Cruise, WM | cruise 
Cruise 
4 
17,633 
4408.1 
10.29 
0.3861 
WM 
2 
14,380 
7189.8 
1.68 
0.0067 
Pooled 
71 
3.04xl0 9 
4282.2 
Total 
77 
3.36xl0 9 
Table 6 
Summary of the analysis of similarity percentages to identify the most important species in 
distinguishing the assemblage that had, on average, higher biomass in the South Atlantic 
Central Water (SACW) than that of the assemblage that had, on average, higher biomass in 
the combination of the Coastal Water and Mixed Water (CW+M). Data used in this analysis 
were collected from the ECOSAR III— VII cruises. Abundance was measured as the mean 
(untransformed) value of biomass (weightxl0 5 kgxm -3 ). The average Bray-Curtis dissimilarity 
values between SACW and CW+M (Diss.), the contributions to between-group dissimilarities 
(Contrib%), and the standard deviations (SD) of Bray-Curtis dissimilarities are presented. 
Higher Diss. and SD values indicate that the contribution of the species to the dissimilarity 
between the SACW and CW+M was reasonably consistent across all pairs of samples in the 
2 groups. Only species that cumulatively contributed -90% to dissimilarity are shown. 
Abundance 
Species 
SAWC 
CW+M 
Diss. 
SD 
Contrib% 
Argentine anchoita 
14.0 
4.0 
17.7 
0.8 
20.3 
Atlantic cutlassfish 
4.1 
2.0 
12.4 
0.9 
14.2 
Rough scad 
4.5 
4.4 
9.8 
0.6 
11.2 
Brazilian sardinella 
1.9 
3.4 
6.7 
0.8 
7.7 
Flying gurnard 
0.1 
4.8 
6.1 
0.4 
7.0 
False pilchard 
0.1 
0.8 
3.5 
0.6 
4.0 
American coastal pellona 
0.2 
1.9 
3.3 
0.4 
3.8 
Atlantic thread herring 
0.0 
0.7 
2.4 
0.4 
2.8 
Castin leatherjacket 
0.2 
0.3 
2.4 
0.4 
2.7 
Atlantic bumper 
0.1 
0.3 
2.2 
0.4 
2.5 
Piquitinga anchovy 
1.9 
0.1 
2.2 
0.3 
2.5 
Harvestfish 
0.1 
1.2 
2.2 
0.4 
2.5 
Atlantic moonfish 
0.8 
0.0 
2.1 
0.4 
2.5 
White snake mackerel 
0.3 
0.2 
2.0 
0.6 
2.3 
Gray triggerfish 
0.1 
1.9 
1.7 
0.3 
1.9 
Atlantic chub mackerel 
8.0 
0.0 
1.5 
0.3 
1.7 
Marini’s anchovy 
0.1 
0.1 
1.4 
0.3 
1.3 
Bluefish 
0.8 
0.0 
0.9 
0.2 
1.0 
Great barracuda 
0.1 
0.0 
0.9 
0.1 
1.0 
