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Eino Oinonen (email)

Lycopodium clavatum L.- ja L. annotium L.-kasvustojen laajuus rinnastettuna samanpaikkaisiin L. complanatum L.- ja Pteridium aquilinum (L.) Kuhn -esiintymiin sekä puuston ikään ja paloaikoihin

Oinonen E. (1968). Lycopodium clavatum L.- ja L. annotium L.-kasvustojen laajuus rinnastettuna samanpaikkaisiin L. complanatum L.- ja Pteridium aquilinum (L.) Kuhn -esiintymiin sekä puuston ikään ja paloaikoihin. Acta Forestalia Fennica no. 87 article id 7187. https://doi.org/10.14214/aff.7187

English title: The size of Lycopodium clavatum and L. Annotinum stands as compared to that of L. Complanatum and Pteridium aquilinum stands, the age of the stand and the dates of fire, on the site

Abstract

The present study is a part of larger project into the size and age of certain forest plants. This study seeks to confirm the size-age relationship of Lycopodium clavatum L. and L. annotium L. stands, and the time of sporal regeneration. The stand dimensions were plotted against the size of bracken (Pteridium aquilinum (L.) Kuhn) and ground pine (Lycopodium complanatum L.) stands growing on the same site, and against the age of the timber and the time of fire on the site.

The method based on parallel measurements carried out in burned forests has proved to be suitable for establishing the rate of spreading of stands and their age. The three club-moss species proved to be much alike in their sporal regeneration. They, as well as bracken, regenerate under the condition created by fire. The largest detached patches are often clones. Both Lycopodium clavatum and L. annotium survive fire poorly. Thus, the maximum size of the clones is usually connected with the last forest fire. Pieces of the shoots may survive the fires.

Sporal regeneration of these species also occur without the aid of fire. As also variation in the annual growth of the shoots can be considerable, the stand size of these species is not as good indicator of the date of fire as with Pteridium aquilinum and L. complanatum. The winding appearance of the shoots increases the error in determination of stand age by the stand size further.

The results emphasize the importance of taking into account the time and spread of the plants in the traditional vegetation analysis. A central question is: what is an individual.

The PDF includes a summary in English.

Original keywords
metsäpalo; uudistuminen; kloonit; katinlieko; riidenlieko; lisääntyminen

English keywords
regeneration; forest fire; clones; Pteridium aquilinum; Lycopodium complanatum; Lycopodium clavatum; Lycopodium annotium

Published in 1968

Views 2860

Available at https://doi.org/10.14214/aff.7187 | Download PDF

Creative Commons License CC BY-SA 4.0

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