(Article of periodic en Anglais - 2009)

Document title

Dendroecological analysis of spruce budworm outbreaks and their relation to climate near the prairie-forest border in northwestern Minnesota

Authors(s) and Affiliation(s)

RAUCHFUSS J. (1) ; ZIEGLER S.S. (1) ; SPEER J.H. (2) ; SIEGERT N.W. (3) ;
(1) Dep. of Geography, Univ. of Minnesota-Twin Cities, Minneapolis, ETATS-UNIS
(2) Dep. of Earth and Environmental Systems, Indiana State Univ., Terre Haute, ETATS-UNIS
(3) Dep. of Entomology, Michigan State Univ., East Lansing, ETATS-UNIS


The AA. investigate the effects of spruce budworm on tree growth at 5 areas within Itasca State Park in northwestern Minnesota near the southwestern margin of the range of balsam. They also document the species composition and age structure along transects in sites infested by spruce budworm. The objectives were to : 1) discover when the latest spruce budworm outbreak started; 2) determine whether tree growth was similarly reduced in earlier decades; and 3) test whether radial tree growth and the start of the outbreak(s) were correlated with climate. They used the computer program OUTBREAK to determine that the current spruce budworm infestation began to reduce tree growth in the 1990s, before it was detected by park officials in 2001. The results show that outbreaks are related to climatic conditions, but they also depend on other factors such as the availability of sufficient food for the spruce budworm


Article of periodic

published at : Physical geography / ISSN 0272-3646

Editor : Taylor & Francis, Abingdon - ROYAUME-UNI (1980)

Millesime : 2009, vol. 30, no3 [pp. 185-204]

Bibliographic references : 4,5 p.

Collation : 6 fig., 2 tabl.



INIST-CNRS, Cote INIST : 20106

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.247/0272-3646.30.3.185

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2009
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