2015-12-03T23:56:33Z (GMT) by Simone Vincenzi
<p>Tag-recapture data and temperature data for the brown trout population of Upper Volaja.</p> <p>Alien brown trout were introduced in the stream in the 1920s and the population has been self-sustaining since then. The population of Upper Volaja has been the subject of a monitoring program that started in 2004 and is currently on going.</p>