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Tapio Linkosalo (email)

Regularities and patterns in the spring phenology of some boreal trees

Linkosalo T. (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

Abstract

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.

Keywords
bud burst; flowering; phenological regulation; phenological time series; Alnus glutinosa; Alnus incana; Betula sp.; Pinus sylvestris; Populus tremula

Author Info
  • Linkosalo, University of Helsinki, Department of Forest Ecology, Unioninkatu 40 B, P.O. Box 24, FIN-00014 University of Helsinki, Finland ORCID ID:E-mail tapio.linkosalo@helsinki.fi (email)

Received 13 April 1999 Accepted 29 September 1999 Published 31 December 1999

Available at https://doi.org/10.14214/sf.647 | Download PDF

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