The diagrams illustrate the number of polar bears found in a survey of four locations at Western Hudson Bay in Canada in the years 1985 and 1995. Overall, the population of polar bears has decreased significantly over the span of just ten years. However, there is one specific region that has experienced a slight increase in its bear population.
Firstly, the total population of bears has dropped significantly from 881 in 1985 to 575 in 1995. Despite this overall decline, the proportions of bears in Churchill North and Cape Totnam Southeast have remained quite stable, collectively accounting for about half of the polar bear population. In contrast, Cape Totnam North experienced a major decline, dropping from roughly a quarter of the total population to approximately an eighth.
Additionally, only one area showed a slight increase in the number of polar bears, with an increase of just six bears.
In conclusion, not only has the overall number of polar bears decreased dramatically, but the distribution of the population across different areas has also changed over the ten-year period.