Figure 3. Distribution of range edge shifts over time (x-axis) grouped by whether the edge thermal niche was conserved over time (y-axis) in the Northeast (A), the West Coast (B), and the Eastern Bering Sea (C). Each point corresponds to a single range edge. Range edges could track cold (blue), warm (red), both (purple), or neither (grey) temperature extremes. The thickness of each horizontal band represents a relative weighting of point densities along the x-axis.