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phenology |
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phenology [fə′näl·ə·jē] (climatology) The science which treats of periodic biological phenomena with relation to climate, especially seasonal changes; from a climatologic viewpoint, these phenomena serve as bases for the interpretation of local seasons and the climatic zones, and are considered to integrate the effects of a number of bioclimatic factors. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Growing degree days also can be used as an indicator of the timing, independent of the calendar, of phenological events including dates of budbreak, bloom, veraison (onset of berry ripening) and harvest. For example, analysis of data from the International Phenological Gardens in Europe (a network of sites covering 69-42[degrees]N and 10[degrees] W-27[degrees]E) has shown that spring events, such as flowering, have advanced by 6 days, and that autumn events have been delayed by 4. SEA CHANGES Although ocean temperatures vary less from year to year and from season to season than air temperatures do, seabirds nevertheless can suffer from phenological shifts in the availability of prey. |
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