the science dealing with the influence of climate on the recurrence of such annual phenomena of animal and plant life as budding and bird migrations.

1880–85; syncopated variant of phenomenology, with restriction to climatic phenomena

phenological [feen-l-oj-i-kuhl] , adjective
phenologically, adverb
phenologist, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
phenology (fɪˈnɒlədʒɪ)
the study of recurring phenomena, such as animal migration, esp as influenced by climatic conditions
[C19: from pheno(menon) + -logy]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
phenology   (fĭ-nŏl'ə-jē)  Pronunciation Key 
The scientific study of cyclical biological events, such as flowering, breeding, and migration, in relation to climatic conditions. Phenological records of the dates on which seasonal phenomena occur provide important information on how climate change affects ecosystems over time.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Phenology signals are clearer than changes in species distribution.
Vegetation phenology derived from remote sensing is important for a variety of
  scientific applications.
Learn more about other phenology programs around the country.
Depicting two annual growing seasons in remote sensing phenology is a challenge.
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