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Full text of this article is only available in PDF format.

Kari Heliövaara (email)

The pine bark bug, Aradus cinnamomeus (Heteroptera, Aradidae) and the height growth rate of young Scots pines.

Heliövaara K. (1982). The pine bark bug, Aradus cinnamomeus (Heteroptera, Aradidae) and the height growth rate of young Scots pines. Silva Fennica vol. 16 no. 4 article id 5168. https://doi.org/10.14214/sf.a15083

Abstract

Relationships between densities of pine bark bug, Aradus cinnamomeus Panzer and the height growth of young Scots pine (Pinus sylvestris L.) were studied in several habitats, including a highly infested area in Southern Finland. The slower the growth of the pines was, the greater was the height up to which bugs were found. On the average, maximum bug density was noted at a height corresponding to a fifth of the height of the tree. In stands restocked by natural generation, the greatest bug densities were noted in pines about three metres high and over twenty years old. Bug densities in trees whose height growth had been decelerating for five years were twice those in trees whose growth was accelerating. A significant negative correlation was found between the bug density and the last-year height increment.

The PDF includes a summary in Finnish.

Keywords
Pinus sylvestris; Scots pine; height growth; insect damages; Aradus cinnamomeus

Published in 1982

Views 5867

Available at https://doi.org/10.14214/sf.a15083 | Download PDF

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