A rare event - an isolated outbreak of the pine-tree lappet moth (Dendrolimus pini) in the Stockholm archipelago

Bjorkman, Christer and Lindelow, Ake and Eklund, Karin and Kyrk, Staffan and Klapwijk, Maartje J. and Fedderwitz, Frauke and Nordlander, Goran (2013) A rare event - an isolated outbreak of the pine-tree lappet moth (Dendrolimus pini) in the Stockholm archipelago. Entomologisk Tidskrift, 134 (1-2). pp. 1-9. ISSN 0013-886X

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Abstract

The pine-tree lappet moth, Dendrolimus pini (L.), belonging to the family La.siocampidae has a wide distribution in Eurasia. In Sweden it is normally found up to 61 degrees N and normally occurs at low densities. In central Europe there have been several reports of outbreaks in historical time. In Sweden the last known outbreak before the one reported here was in 1938-40 in Varmland. In this paper we report a recent severe D. pini outbreak that was discovered in 2012 on the small island Furuskar in the Stockholm archipelago. The distribution of the damage on the island as well as a detailed inventory of larvae and pupae on individual trees is presented. Several photographs are presented to illustrate the damage. In the paper we formulate and try to answer several questions that arose as a natural consequence of this rare event: Why was this particular island hit? What are the causes behind the outbreak? What will happen to the trees and the vegetation on the island? Will the outbreak continue? Will the outbreak spread?

Item Type: Article
Language: English
Future Forest Subject: Skogsbruk i klimatförändringens tid > Osäkerhet och risk
Depositing User: Christer Enkvist
Date Deposited: 28 Feb 2017 14:28
Last Modified: 28 Feb 2017 14:28
URI: https://ffpdb.slu.se/id/eprint/4026

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