Figure 20: Whole-lake average number of fish of Coregonus spp per vertical net battery compared to total phosphorus concentration in large and deep lakes (average depth> 50 m). First panel shows the relationship for all Coregonus caught in the lake. The other panels shows the relationship when only fish larger than the size thresholds shown at the top of the panel are included (length measured from snout to the tip of the tail). Note that the horizontal axis is on a log scale. Dashed red lines indicate statistically significant relationships (from left to right: p-value = 0.0001, R2 = 0.79; p-value = 0.008, R2 = 0.52; p-value = 0.87, R2 = 0.003; p-value = 0.412, R2 = 0.09). Shaded regions show thresholds for total phosphorus of 10 μg / L and 5 μg / L.