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

Species Associations of Stream Fishes

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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.

Species	PC1	PC2	Species	PC1	PC2
chestnut lamprey	0.156	-0.022	flathead chub	0.016	0.056
silver lamprey	0.104	-0.027	blacknose dace	0.092	-0.148
bowfin	0.040	0.004	longnose dace	0.182	-0.005
goldeye	0.091	0.165	creek chub	0.064	-0.061
mooneye	0.139	0.102	black bullhead	-0.015	0.031
quillback carpsucker	0.127	0.173	yellow bullhead	0.118	0.001
white sucker	0.000	0.000	brown bullhead	0.103	-0.094
northern hogsucker	0.040	0.004	channel catfish	0.102	0.285
bigmouth buffalo	0.053	0.236	stonecat	0.068	-0.022
silver redhorse	0.218	0.015	tadpole madtom	0.171	0.032
golden redhorse	0.194	-0.071	central mudminnow	0.096	-0.322
shorthead redhorse	0.176	0.017	northern pike	-0.018	0.042
greater redhorse	0.074	0.136	banded killifish	0.124	-0.071
central stoneroller	0.035	0.039	burbot	0.154	-0.010
largescale stoneroller	-0.005	0.035	trout-perch	0.083	0.169
spotfin shiner	0.026	0.246	white bass	0.082	0.133
common carp	0.008	0.077	rock bass	0.128	0.046
brassy minnow	0.045	-0.077	green sunfish	0.123	0.073
common shiner	0.062	-0.025	pumpkinseed	0.144	-0.078
silver chub	0.059	0.090	orangespotted sunfish	0.066	0.077
pearl dace	0.019	-0.256	bluegill	0.205	-0.012
hornyhead chub	0.183	-0.030	smallmouth bass	0.116	-0.045
golden shiner	0.200	-0.082	largemouth bass	0.185	-0.101
pugnose shiner	0.059	-0.038	white crappie	0.001	0.127
emerald shiner	0.132	0.146	black crappie	0.117	0.071
river shiner	-0.036	0.259	rainbow darter	0.040	0.004
bigmouth shiner	0.156	0.103	Iowa darter	0.084	0.046
blackchin shiner	0.216	-0.114	least darter	0.059	-0.038
blacknose shiner	0.184	-0.097	johnny darter	0.069	-0.035
spottail shiner	0.216	-0.027	yellow perch	0.143	0.057
rosyface shiner	0.136	-0.045	logperch	0.132	-0.011
sand shiner	0.120	0.120	blackside darter	0.034	0.043
weed shiner	0.091	-0.054	river darter	0.060	-0.121
mimic shiner	0.154	-0.172	sauger	0.056	0.204
northern redbelly dace	0.083	-0.193	walleye	0.165	0.124
finescale dace	0.009	-0.210	freshwater drum	0.081	0.140
bluntnose minnow	0.138	0.039	mottled sculpin	0.100	-0.057
fathead minnow	0.000	0.000	brook stickleback	-0.016	-0.056

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