Lengths and weights of Bull Trout (Salvelinus confluentis) from two Rocky Mountain lakes in Alberta, CAN and two eras.
A data frame with 137 observations on the following 3 variables:
Fork length (mm)
Wet mass (g)
Era of collection (
The historical (1977-1980) era samples were from before restrictive sportfishing regulatory regimes were implemented (in the 1990s) that led to changes in abundance and population structure of bull trout.
From (approximately) Figure 2 of Parker, B.R., D.W. Schindler, F.M. Wilhelm, and D.B. Donald. 2007. Bull trout population responses to reductions in angler effort and retention limits. North American Journal of Fisheries Management, 27:848-859. [Was (is?) from https://www.researchgate.net/publication/233144141_Bull_Trout_Population_Responses_to_Reductions_in_Angler_Effort_and_Retention_Limits.]
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