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Distribution of Fishes in the Red River of the North Basin on Multivariate Environmental Gradients

Species Associations of Stream Fishes


Table 5. Loadings (correlations) of the original variables (species) on principal component axes 1 (PC1) and 2 (PC2) for 27 streams in the Red River basin.

SpeciesPC1PC2SpeciesPC1PC2
chestnut lamprey0.156-0.022flathead chub0.0160.056
silver lamprey0.104-0.027blacknose dace0.092-0.148
bowfin0.0400.004longnose dace0.182-0.005
goldeye0.0910.165creek chub0.064-0.061
mooneye0.1390.102black bullhead-0.0150.031
quillback carpsucker0.1270.173yellow bullhead0.1180.001
white sucker0.0000.000brown bullhead0.103-0.094
northern hogsucker0.0400.004channel catfish0.1020.285
bigmouth buffalo0.0530.236stonecat0.068-0.022
silver redhorse0.2180.015tadpole madtom0.1710.032
golden redhorse0.194-0.071central mudminnow0.096-0.322
shorthead redhorse0.1760.017northern pike-0.0180.042
greater redhorse0.0740.136banded killifish0.124-0.071
central stoneroller0.0350.039burbot0.154-0.010
largescale stoneroller-0.0050.035trout-perch0.0830.169
spotfin shiner0.0260.246white bass0.0820.133
common carp0.0080.077rock bass0.1280.046
brassy minnow0.045-0.077green sunfish0.1230.073
common shiner0.062-0.025pumpkinseed0.144-0.078
silver chub0.0590.090orangespotted sunfish0.0660.077
pearl dace0.019-0.256bluegill0.205-0.012
hornyhead chub0.183-0.030smallmouth bass0.116-0.045
golden shiner0.200-0.082largemouth bass0.185-0.101
pugnose shiner0.059-0.038white crappie0.0010.127
emerald shiner0.1320.146black crappie0.1170.071
river shiner-0.0360.259rainbow darter0.0400.004
bigmouth shiner0.1560.103Iowa darter0.0840.046
blackchin shiner0.216-0.114least darter0.059-0.038
blacknose shiner0.184-0.097johnny darter0.069-0.035
spottail shiner0.216-0.027yellow perch0.1430.057
rosyface shiner0.136-0.045logperch0.132-0.011
sand shiner0.1200.120blackside darter0.0340.043
weed shiner0.091-0.054river darter0.060-0.121
mimic shiner0.154-0.172sauger0.0560.204
northern redbelly dace0.083-0.193walleye0.1650.124
finescale dace0.009-0.210freshwater drum0.0810.140
bluntnose minnow0.1380.039mottled sculpin0.100-0.057
fathead minnow0.0000.000brook stickleback-0.016-0.056

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