phenology

The scientific study of periodic biological phenomena, such as flowering, breeding, and migration, in relation to climatic conditions.

The timing of a periodic biological phenomenon in relation to climatic conditions.

That branch of applied meteorology which treats of the influence of climate on the recurrence of the annual phenomena of animal and vegetable life.

The science of the relations between climate and periodic biological phenomena, as the migrations and breeding of birds, the flowering and fruiting of plants, etc.

The study of the effect of climate on periodic biological phenomena.