SEASONAL CUE. “Photoperiod alone is not an unambiguous signal as any particular daylength occurs twice in an annual cycle. Progressive changes in daylength, which are at their greatest around the equinoxes in spring and autumn, do, however, provide a certain environmental signal for the passage of the seasons.”
https://lnkd.in/d_f7kfY
linkedin post 2022-06-29 05:12:48
Nigel Fleming
September 21, 2022