FierravantiCocozzaPalomboEtAl2015

Reference

Fierravanti, A., Cocozza, C., Palombo, C., Rossi, S., Deslauriers, A., Tognetti, R. (2015) Environmental-mediated relationships between tree growth of black spruce and abundance of spruce budworm along a latitudinal transect in Quebec, Canada. Agricultural and Forest Meteorology, 213:53-63. (Scopus )

Abstract

Changes in tree growth and insect distribution are projected due to climate warming. The expected effects of climate change on forest disturbance (e.g., insect outbreak) regime call for a better insight into the growth responses of trees to varying environmental conditions over geographical regions in eastern North America. In this study, the effects of a latitudinal thermal gradient and spruce budworm (SBW) outbreaks on the tree growth of black spruce (. Picea mariana Mill.) were investigated along a 400. km transect from 48°N to 51°N across the continuous boreal forest in Quebec, Canada. Time series data were analyzed to synchronize climatic factors (temperature and precipitation trends), insect dynamics (SBW population frequency) and tree growth (ring-width chronology). Radial growth resulted as being synchronized with climate patterns, highlighting a positive effect of maximum temperatures on tree growth, especially in the northernmost site. Increasing temperatures and precipitation had a more positive effect on tree growth during epidemic periods, whereas the detrimental effects of SBW outbreaks on tree growth were observed with climate patterns characterized by lowered temperature. The lag between time series, synchrony and/or frequency of synchrony between tree growth and SBW outbreak were considered in order to link the growth of host trees and the dynamics of insect populations. The proposed analytical approach defined damage severity on tree growth in relation to population dynamics and climate fluctuations at the northern distribution limit of the insect. Overall, a decline in tree growth was observed in these boreal forests, due to SBW outbreaks acting in combination with other stress factors. © 2015 Elsevier B.V.

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@ARTICLE { FierravantiCocozzaPalomboEtAl2015,
    AUTHOR = { Fierravanti, A. and Cocozza, C. and Palombo, C. and Rossi, S. and Deslauriers, A. and Tognetti, R. },
    TITLE = { Environmental-mediated relationships between tree growth of black spruce and abundance of spruce budworm along a latitudinal transect in Quebec, Canada },
    JOURNAL = { Agricultural and Forest Meteorology },
    YEAR = { 2015 },
    VOLUME = { 213 },
    PAGES = { 53-63 },
    NOTE = { cited By 0 },
    ABSTRACT = { Changes in tree growth and insect distribution are projected due to climate warming. The expected effects of climate change on forest disturbance (e.g., insect outbreak) regime call for a better insight into the growth responses of trees to varying environmental conditions over geographical regions in eastern North America. In this study, the effects of a latitudinal thermal gradient and spruce budworm (SBW) outbreaks on the tree growth of black spruce (. Picea mariana Mill.) were investigated along a 400. km transect from 48°N to 51°N across the continuous boreal forest in Quebec, Canada. Time series data were analyzed to synchronize climatic factors (temperature and precipitation trends), insect dynamics (SBW population frequency) and tree growth (ring-width chronology). Radial growth resulted as being synchronized with climate patterns, highlighting a positive effect of maximum temperatures on tree growth, especially in the northernmost site. Increasing temperatures and precipitation had a more positive effect on tree growth during epidemic periods, whereas the detrimental effects of SBW outbreaks on tree growth were observed with climate patterns characterized by lowered temperature. The lag between time series, synchrony and/or frequency of synchrony between tree growth and SBW outbreak were considered in order to link the growth of host trees and the dynamics of insect populations. The proposed analytical approach defined damage severity on tree growth in relation to population dynamics and climate fluctuations at the northern distribution limit of the insect. Overall, a decline in tree growth was observed in these boreal forests, due to SBW outbreaks acting in combination with other stress factors. © 2015 Elsevier B.V. },
    AUTHOR_KEYWORDS = { Black spruce; Climate change; Insect population outbreaks; Synchronicity analysis; Tree growth dynamics },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1016/j.agrformet.2015.06.014 },
    KEYWORDS = { Choristoneura fumiferana; Hexapoda; Picea mariana },
    SOURCE = { Scopus },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-84936149155&partnerID=40&md5=d4fbda89f9b54f3ef42879f595acef85 },
}

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