. The Canadian field-naturalist. Natural history. 2002 Fuller: Canada and the Buffalo 155 LU CQ CO (O z LU O. 12 3 4 5 6 7 8 9 10111213141516171819 20 2122 23 24 25 26 27 28 YEARS AFTER 1970 LN (NUMBER) REGRESSION Figure 3. Natural logarithms of counts of bison south of Peace River beginning in 1971. The straight line is the Calculated Regression Line. The equation for the regression line for the log^ transformed numbers is: LN(Nt) = - , with an r^ of The rate of decline over 28 years has been per year, and the probability that the relationship could have occurred
. The Canadian field-naturalist. Natural history. 2002 Fuller: Canada and the Buffalo 155 LU CQ CO (O z LU O. 12 3 4 5 6 7 8 9 10111213141516171819 20 2122 23 24 25 26 27 28 YEARS AFTER 1970 LN (NUMBER) REGRESSION Figure 3. Natural logarithms of counts of bison south of Peace River beginning in 1971. The straight line is the Calculated Regression Line. The equation for the regression line for the log^ transformed numbers is: LN(Nt) = - , with an r^ of The rate of decline over 28 years has been per year, and the probability that the relationship could have occurred by chance is less than Figure 4 shows what has happened to the popula- tion as a whole. The striking similarity between these two Figures shows that changes in the delta have affected not only the southern part of the park but the park as a whole. The equation for this log^ transformed regression is LN(Nt) = , with an r^ of The overall rate of decline has been per year. The probability that the relationship was due to chance is less than North of Peace River the population fluctuated up and down without any visible pattern. The regression line, which actually has a positive slope of , is meaningless, with an r- < Tuberculosis: Col. Richards ended his summary of correspondence concerning the transfer with two short, but interesting, paragraphs. The information available lends support to the view that as only young animals were being transferred to the Wood Buffalo Park, improvement in their condition might be looked for. It is doubtful whether any of our park officials are in a position to definitely determine to what extent the animals in Wood Buffalo Park are affected with tuberculosis. In these circumstances it would seem that facts are not available to justify the conclusion that tuberculosis is prevalent or endangering the buffalo in Wood Buffalo Park. It is the practice to authorize the killing of a number of aged buffal
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