The tall forests, like all environments on earth, ride our planet along a regular and predictable route through the solar system and experience seasonal changes in day length and climate.
The four seasons of the European tradition: summer, autumn, winter and spring, reflect the culture and environment of Europe but do not adequately describe what happens in the tall forests of Victoria.
The indigenous people of the region, the Kulin, have a detailed understanding of the annual cycle of seasonal events in the Upper Yarra Valley and the pattern of change marked by the association of movements in the night sky and changes in the biology and weather.
Biologists have insights into the forest ecosystem through collection and analysis of field data including how species respond to seasonal change. Both indigenous and scientific knowledge provide a rich picture of the how the tall forest changes throughout the year.