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Forest dynamics following spruce budworm outbreaks in the northern and southern mixedwoods of central Quebec

Bouchard, M ; Kneeshaw, D ; Messier, C

Canadian journal of forest research, 2007-04, Vol.37 (4), p.763-772 [Periódico revisado por pares]

Ottawa, ON: National Research Council of Canada

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Título:
Forest dynamics following spruce budworm outbreaks in the northern and southern mixedwoods of central Quebec
Autor: Bouchard, M ; Kneeshaw, D ; Messier, C
Assuntos: Abies balsamea ; aerial photography ; Biological and medical sciences ; boreal forests ; botanical composition ; Choristoneura fumiferana ; climate change ; coniferous forests ; conifers ; dendrochronology ; disease outbreaks ; Distribution ; Environmental aspects ; Fires ; forest damage ; Forest dynamics ; forest health ; forest insects ; Forest management ; forest pests ; forest succession ; forest trees ; Forestry ; Fundamental and applied biological sciences. Psychology ; global warming ; hardwood ; insect pests ; Insect-plant relationships ; Landscaping ; mixed forests ; Mortality ; Observations ; Research methodology ; spatial distribution ; Spruce budworm ; stand structure ; Technical support ; tree mortality ; vegetation structure
É parte de: Canadian journal of forest research, 2007-04, Vol.37 (4), p.763-772
Notas: http://pubs.nrc-cnrc.gc.ca/cgi-bin/rp/rp2_vols_e?cjfr
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Descrição: The effects of 20th century spruce budworm (Choristoneura fumiferana (Clem.)) outbreaks on forest dynamics was examined in the southern and northern parts of the mixedwood forest zone in central Quebec, Canada. In each region, three study areas were placed in unmanaged stands that had not burned for more than 200 years. Disturbance impacts and forest succession were evaluated using aerial photographs and dendrochronology. Spruce budworm outbreaks occurred around 1910, 1950, and 1980 in both regions. The 1910 outbreak seemed to have limited impact in both regions, and the 1950 outbreak caused heavy mortality in conifer stands (mostly of balsam fir, Abies balsamea (L.) Mill.) in the southern region. The 1980 outbreak caused major mortality in the northern region, but had little impact in the southern region. Successive spruce budworm outbreaks led to a massive invasion by hardwood species in the last century in the southern region but not in the northern region. The reason for such contrasting dynamics between regions is unknown, but we hypothesize that differences in disturbance intensities, influenced by climate, played a major role. Results from this study emphasize that generalizations about the effect of spruce budworm outbreaks on forest dynamics cannot be derived from observations made during a single outbreak or at a single location.
Editor: Ottawa, ON: National Research Council of Canada
Idioma: Inglês

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Forest dynamics following spruce budworm outbreaks in the northern and southern mixedwoods of central Quebec

Bouchard, M ; Kneeshaw, D ; Messier, C

Ottawa, ON: National Research Council of Canada

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