Phenology

Phenology is the study of occurrences as in recording items associated with natural events and dates of recurrent events. These recording reflect their relationship to the climatic seasonal changes as well as environmental factors such as: Temperature, pH of the water/soil, and amount of sun. Basically, phenology uses a combination of ecology and meteorology.

Britannica.com

Wikipedia

(Last Edit 13 Feb 2023, Kellee)