Elevated summer temperatures delay spawning reduce redd construction for resident brook trout (Salvelinus fontinalis)
Redd (nest) surveys for resident brook trout (Salvelinus fontinalis) were conducted annually in a mountain lake in northern New York for 11 years with multiple surveys conducted during the spawning season in eight of those years. Elevated temperatures in summer were correlated with a delay in spawning and a reduction in the total number of redds constructed. Increasing the summer mean of maximum daily air temperatures by 1 °C delayed spawning by approximately 1 week and decreased the total number of redds constructed by nearly 65.
The link address is: http://www2.dnr.cornell.edu/cek7/Publications/Warren_et_al_2012.pdf
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