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Table 2 Statistically significance of increases or decreases in numbers over the entire observation period

From: 34 years of investigation in the Rhine River at Ludwigshafen, Germany – trends in Rhine fish populations

Fish species Statistically increased over observation period Statistically decreased over observation period
Aspius aspius yes no
Barbus barbus yes no
Chondrostoma nasus yes no
Esox lucius no yes
Gymnocephalus cernua yes no
Lepomis gibbosus yes no
Leuciscus cephalus yes no
Leuciscus leuciscus yes no
Silurus glanis yes no
  1. Wald Chi Square test (logistic regression) with Significance level of 5%.