Trees in forest ecosystems communicate through bioelectrical signals and fungal networks to synchronize their activity before solar eclipses [1].
This discovery suggests that forests operate as integrated systems rather than collections of individual plants. By coordinating their responses to rapid environmental shifts, trees may better manage resources and protect their physiological health during periods of sudden darkness.
According to a study published in April 2026, spruce trees synchronized these bioelectrical signals hours before a solar eclipse occurred [3]. Researchers used sensors to gather the full suite of a tree's bioelectrical signals in real time [2]. This coordination allows the trees to prepare for the specific environmental changes associated with the eclipse event [3].
This communication is made possible by a complex underground infrastructure. Mycelium are tiny threads of fungal organisms that wrap around or bore into tree roots, composing what is called a mycorrhizal network that connects individual plants together [1]. These networks can extend for thousands of miles [1].
Beyond responding to celestial events, trees use these chemical and electrical pathways to share resources or issue warnings [4]. This biological networking allows species such as spruce and beech to react to threats or changes in their surroundings collectively [1]. In other observations of forest behavior, it has been noted that beeches stay in bed for at least 13 hours a day [5].
Scientists involved in international research projects have focused on these interactions to understand how forest synchronization affects long-term survival [3]. The ability to communicate via both chemical scents and electrical pulses indicates a sophisticated level of environmental awareness within forest ecosystems [4].
“Mycelium are tiny threads of fungal organisms that wrap around or bore into tree roots”
The ability of trees to synchronize bioelectrical signals indicates that forest ecosystems possess a level of collective intelligence and rapid communication previously underestimated. By utilizing mycorrhizal networks to prepare for events like solar eclipses, forests demonstrate a capacity for systemic resilience that could be critical for their survival as global climate patterns become more volatile.
