Timelapse. Saint-Petersburg (Russia).

Saint Petersburg is often described as the most Western city of Russia. Among cities of the world with over one million people, Saint Petersburg is the northernmost.

Via wikipedia.org
Music: Vivaldi - Tosco Fantasy.
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Alex E

Ecoclimax is defined by Odum (1969) as the culmination state after a succession in a stabilized ecosystem in which maximum biomass (or high information content) and symbiotic function among organisms is kept per unit of available energy flow.