Figure 5.

Warming effects on length‐specific body growth of fish. Length‐specific annual growth rates (G _L, based on back‐calculated length‐at‐age) of (a) newborn and (b) 140–160 mm 3 year old perch in the artificially heated enclosed coastal ecosystem, the Biotest Lake (red symbols), and its reference area (blue symbols), and (c) the resulting mean difference in body growth between areas for newborn perch (black symbols, left y‐axis) and 3 year old perch (white symbols, right y‐axis). Solid regression lines represent significant (p < 0.05) relationships. The light red area in (c) indicates the period during which the Biotest Lake received warm water