Occurring or happening during the same season as something else, or existing together during the same seasonal period.
From the prefix 'co-' (together, with) combined with 'seasonal' (relating to a season), creating a word meaning existing or occurring in the same season.
Ecologists use this term to understand how different species that share the same season interact with each other, like how migratory birds and blooming flowers are coseasonal in spring.
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