a) The average prematurity survival estimates (premS, the first 2 yr) b) the average first-year survival estimates (firstS) vs. constant mature survival estimates for different vendace populations and those during the abundant (+) and sparse (–) population regimes in lakes Southern Konnevesi and Puruvesi. The grey dashed lines are the premS and firstS that would be required for a stable state in different levels of mature survival (mS) for Lake Vesijärvi vendace with the observed fast growth.