Original paper

The phenology of Rhododendron ferrugineum L. (Ericaceae) in correlation to temperature, frost, insolation, and snow cover duration

Schlüssel, André; Theurillat, Jean-Paul; Wiget, Lucie

Phytocoenologia Band 30 Heft 3-4 (2000), p. 457 - 468

34 references

published: Nov 24, 2000

DOI: 10.1127/phyto/30/2000/457

BibTeX file

ArtNo. ESP024003003010, Price: 29.00 €

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Abstract

The phenology of Rhododendron ferrugineum L. has been studied during five years (1994 to 1998) in two sites in the Alps of Valais (Switzerland). The first site is the Val d'Arpette and the second one is Belalp. Observation plots have been set up according to a subalpine-alpine altitudinal transect. Several climatic factors such as air temperature, soil temperature, relative air humidity, insolation and snow cover duration have been measured. The correlation between the phenological development and these factors has been determined. The results show that the floral development of this species is mainly correlated with the sum of the mean daily air temperature. But frost, insolation and snow cover duration have also shown a significant influence. A phenoclimatic model including all these factors is proposed.

Keywords

AlpsSwitzerlandecoclinesubalpinealpineclimate changetemperaturephenologyphenoclimatic modelRhododendron ferrugineum L.