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Articles containing the keyword 'phenological time series'
Category : Research article
article id 647,
category
Research article
(1999).
Regularities and patterns in the spring phenology of some boreal trees.
Silva Fennica
vol.
33
no.
4
article id 647.
https://doi.org/10.14214/sf.647
Keywords:
Populus tremula;
Pinus sylvestris;
flowering;
Alnus glutinosa;
bud burst;
Alnus incana;
phenological regulation;
phenological time series;
Betula sp.
Abstract |
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Author Info
Phenological time series of flowering and bud burst of Populus tremula (L.) and Betula sp., and the flowering of Pinus sylvestris (L.), Alnus glutinosa (L.) and Alnus incana (L.) were constructed from data collected in Finland during the period 1896–1955. The resulting combined time series were examined with two aims in mind: first, to determine the phenological regularities between different species and, second, to detect patterns of spring advancement over a geographically large area. The results indicate that the geographical pattern of spring advancement is rather uniform from year to year, and between different species. Furthermore, the mechanisms regulating the timing of phenological events in different species seem to function in a similar way, suggesting an unanimous optimal response to climatic conditions.
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Linkosalo,
University of Helsinki, Department of Forest Ecology, Unioninkatu 40 B, P.O. Box 24, FIN-00014 University of Helsinki, Finland
E-mail:
tapio.linkosalo@helsinki.fi
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