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Scientific Correspondence
Nature 397, 659 (25 February 1999) | doi:10.1038/17709
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Growing season extended in Europe
Annette Menzel1 & Peter Fabian1
Abstract
Changes in phenology (seasonal plant and animal activity driven by environmental factors) from year to year may be a sensitive and easily observable indicator of changes in the biosphere. We have analysed data from more than 30 years of observation in Europe, and found that spring events, such as leaf unfolding, have advanced by 6 days, whereas autumn events, such as leaf colouring, have been delayed by 4.8 days. This means that the average annual growing season has lengthened by 10.8 days since the early 1960s. These shifts can be attributed to changes in air temperature.
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