Clear-cut harvesting of wood from forest creates long periods of time when certain animals cannot use the forest as habitats. Partial cut harvesting is increasingly used to lessen the effects of logging on the animals. The following scatterplot shows the relationship between the density of red squirrels, and squirrels per plot, 2 to 4 years after partial cut harvesting, and the percent of trees that were harvested in each of 11 Forests. Which of the following is the best description of the relationship displayed in the scatterplot?