Figure 1.
Bathymetry represents the 200 m and 1200 m depth contours.
Table 1.
Approximate weights and branch lengths used for all calculations of mean taxonomic distinctness and variation in taxonomic distinctness.
Figure 2.
Taxonomic distinctness versus latitude and depth.
(A,B) two views of average taxonomic distinctness (AvTD), and (C,D) two views of the variation in taxonomic distinctness (VarTD). Data were analyzed with Generalized Additive Models.
Figure 3.
Average taxonomic distinctness versus latitude for five depth zones.
Data were analyzed with Generalized Additive Models. Solid lines represent the smoothed trend. Broken lines are ±1 s.e. The data points shown are the residuals around the smoothed term. The y-axis label is the smoothed parameter and its estimated degrees of freedom from the GAM. Trends for the 50–150 m and 601–900 m depth bins were better represented by linear models. * = p<0.05, ** = p<0.01, *** = p<0.001.
Figure 4.
Variation in taxonomic distinctness versus latitude for five depth zones.
Data were analyzed with Generalized Additive Models. Solid lines represent the smoothed trend. Broken lines are ±1 s.e. The data points shown are the residuals around the smoothed term. The y-axis label is the smoothed parameter and its estimated degrees of freedom from the GAM. * = p<0.05, ** = p<0.01, *** = p<0.001.
Figure 5.
Taxonomic distinctness versus depth for different latitude zones.
(A–D) AvTD and (E–H) VarTD. Latitude zone given in panes (A–D) corresponds with panes (E–H). Data were analyzed with Generalized Additive Models. Solid lines represent the smoothed trend. Broken lines are ±1 s.e. The data points shown are the residuals around the smoothed term. The y-axis is the smoothed parameter and its estimated degrees of freedom from the GAM. * = p<0.05, ** = p<0.01, *** = p<0.001.
Figure 6.
Taxonomic trees for the region between Point Conception and Cape Mendocino for five depth zones.
Species are those found in at least 50% of the trawls in a given depth zone. Numbers indicate species identified in Table 2.
Table 2.
Taxonomic information for species in Figure 6.
Figure 7.
AvTD versus depth and latitude.
AvTDdiff for (A) Scorpaeniformes, (B) Pleuronectiformes, (C) Perciformes, (D) Gadiformes, (E) Chondrichthyes, and (F) AvTD for Actinopterygii only. All GAMs are significant at the α = 0.05 level.
Figure 8.
VarTD versus depth and latitude.
VarTDdiff (A) Scorpaeniformes, (B) Pleuronectiformes, (C) Perciformes, (D) Gadiformes, (E) Chondrichthyes, and (F) VarTD for Actinopterygii only. All GAMs are significant at the α = 0.05 level.