Among-lake water temperature differences were minimal (of the 12 lakes studied 10 had mean water temperatures of 19.0 ± 1 °C) and could not explain growth differences.
Les variations inter-lacs de la température de l'eau furent minimes (des 12 lacs étudiés 10 ont eu des températures moyennes de 19.0 ± 1 °C) et n'ont pas expliqué les variations de la croissance.