day length

(redirected from Daytime length)

day length

the number of daylight hours per day, increasing towards midsummer and the reverse towards midwinter. The effective trigger in the commencement and cessation of the breeding seasons in those species that demonstrate seasonal breeding.
References in periodicals archive ?
The durations of movement negatively correlated with daytime length (Spearman correlation analysis; r = -0.
Pearson correlation analysis was also employed to evaluate the relationship between the daytime length and the duration of small rodents?
Temporal activity patterns of the species in this study were related to daytime length (Fig.
More worrisome is the fact that the daytime length, which is vital to the aircraft, will also be getting shorter over the course of the next few weeks, posing further challenges for the planned journey.