Citation
Tracking the seasons: the internal calendars of vertebrates
TL;DR
Photoperiod (decreasing daylight) triggers hibernation preparation
This paper explains how animals use photoperiod (daylight duration) as the trigger for hibernation preparation. Understanding that hibernation entry is triggered by environmental signals, not internal decision-making, has implications for when businesses should initiate strategic hibernation - responding to clear market signals rather than waiting for crisis.
Key Findings from Paul et al. (2008)
- Photoperiod (decreasing daylight) triggers hibernation preparation
- Internal biological calendars track seasonal changes
- Hibernation timing is predictable based on environmental cues
- Preparation begins well before scarcity arrives