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Tittel: Early stages of Calluna vulgaris regeneration after burning of coastal heaths on Tarva, central Norway
Forfattere:Nilsen, L., Johansen, L. & Velle, L.
Navn på utgivelse: Applied Vegetation Science
Publikasjonstype: Artikkel i vitenskaplig tidsskrift m/referee
Volum (nr): 8
Side(r): 57-64
Utgivelsesår: 2005
Avdeling: Bioforsk Vest - Fureneset
Fagområde: Grovfor og kulturlandskap
Sammendrag: Questions: How does Calluna vulgaris regenerate after burning in old and younger wet heath and old dry heath? Location: Central Norway Methods: Together 17 patches of old and younger wet heath and old dry heath dominated by Calluna vulgaris were burned. The mean temperatures reached in the various categories of heath were measured. Cover, frequency, height and number of seedlings of Calluna vulgaris were studied in 1 m2 plots. Results: The mean burning temperatures varied from 680 to 740 ºC, highest in wet heath that had not been burned for at least 50 years. Regeneration of Calluna vulgaris was evident in the year of burning, but only from seeds. Even heath with a short burning interval lacked vegetative regeneration. The Calluna vulgaris cover increased yearly and passed 50 % three years after burning. The performance of regeneration was evident in the year of burning, and highest in heath with a short burning interval. The height increased regularly on all sites, but was most rapid in dry heath, probably because of better microclimatic conditions. There were more seedlings in the heath with a short burning interval. Conclusions: Calluna vulgaris regenerates only from seeds after burning in central Norway, and the density of Calluna vulgaris increased rapidly which is positive for the conservation and management of coastal heaths in central Norway.
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