Terrail2014691

Référence

Terrail, R., Arseneault, D., Fortin, M.-J., Dupuis, S. and Boucher, Y. (2014) An early forest inventory indicates high accuracy of forest composition data in pre-settlement land survey records. Journal of Vegetation Science, 25(3):691-702. (Scopus )

Résumé

QuestionsDo early land survey records of the ‘line description’ type allow accurate reconstructions of pre‐settlement forest composition? Did surveyors record all tree taxa in forest stands encountered along the surveyed lines? Were taxa ranked according to their relative importance in forest stands? What criteria did surveyors used to rank taxa in stands?LocationNorthern range limit of northern hardwoods, Lower St. Lawrence region, eastern Québec, Canada.MethodsValidation of 1695 taxon lists recorded by surveyors in the 19th century through comparison of the number of stems by tree species and stem diameter classes recorded in 2790 old‐growth plots over the same two regions during a 1930 forest inventory.ResultsTaxon prevalence and dominance (i.e. proportion of observations for which each taxon is dominant) are highly correlated between the pre‐settlement surveys and the 1930 forest inventory data sets. Surveyors ranked taxa in decreasing order of relative importance, using criteria directly equivalent to basal area of stems in modern forest inventory plots. Taxon prevalence is more accurately reconstructed using relative metrics (i.e. ranks of taxon prevalence in a region), whereas taxon dominance is more accurately reconstructed using absolute metrics (percentage of dominant stands across landscapes). The early land surveys allow spatial patterns of forest composition to be reconstructed by computing relative taxon prevalence in cells of 3 km × 3 km. Prevalence of balsam fir (Abies balsamea) and white birch (Betula papyrifera) are underestimated in survey data, probably reflecting their low economic value in the 19th century.ConclusionsTaxon lists of early surveyors can accurately reconstruct pre‐settlement forest composition and spatial patterns using metrics of taxon prevalence and dominance across landscapes. Relative prevalence is a more comprehensive description of forest composition than dominance, but tends to underestimate some taxa. Absolute taxon dominance is a more robust metric than prevalence, but only reports on the abundance of the most dominant taxa. © 2013 International Association for Vegetation Science.

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@ARTICLE { Terrail2014691,
    AUTHOR = { Terrail, R. and Arseneault, D. and Fortin, M.-J. and Dupuis, S. and Boucher, Y. },
    TITLE = { An early forest inventory indicates high accuracy of forest composition data in pre-settlement land survey records },
    JOURNAL = { Journal of Vegetation Science },
    YEAR = { 2014 },
    VOLUME = { 25 },
    NUMBER = { 3 },
    PAGES = { 691-702 },
    NOTE = { cited By 9 },
    ABSTRACT = { QuestionsDo early land survey records of the ‘line description’ type allow accurate reconstructions of pre‐settlement forest composition? Did surveyors record all tree taxa in forest stands encountered along the surveyed lines? Were taxa ranked according to their relative importance in forest stands? What criteria did surveyors used to rank taxa in stands?LocationNorthern range limit of northern hardwoods, Lower St. Lawrence region, eastern Québec, Canada.MethodsValidation of 1695 taxon lists recorded by surveyors in the 19th century through comparison of the number of stems by tree species and stem diameter classes recorded in 2790 old‐growth plots over the same two regions during a 1930 forest inventory.ResultsTaxon prevalence and dominance (i.e. proportion of observations for which each taxon is dominant) are highly correlated between the pre‐settlement surveys and the 1930 forest inventory data sets. Surveyors ranked taxa in decreasing order of relative importance, using criteria directly equivalent to basal area of stems in modern forest inventory plots. Taxon prevalence is more accurately reconstructed using relative metrics (i.e. ranks of taxon prevalence in a region), whereas taxon dominance is more accurately reconstructed using absolute metrics (percentage of dominant stands across landscapes). The early land surveys allow spatial patterns of forest composition to be reconstructed by computing relative taxon prevalence in cells of 3 km × 3 km. Prevalence of balsam fir (Abies balsamea) and white birch (Betula papyrifera) are underestimated in survey data, probably reflecting their low economic value in the 19th century.ConclusionsTaxon lists of early surveyors can accurately reconstruct pre‐settlement forest composition and spatial patterns using metrics of taxon prevalence and dominance across landscapes. Relative prevalence is a more comprehensive description of forest composition than dominance, but tends to underestimate some taxa. Absolute taxon dominance is a more robust metric than prevalence, but only reports on the abundance of the most dominant taxa. © 2013 International Association for Vegetation Science. },
    AFFILIATION = { Groupe BOREAS, Centre d'études nordiques and Chaire de Recherche sur la Forêt Habitée, Université du Québec à Rimouski, 300 Allée des Ursulines, Rimouski, QC, G5L 3A1, Canada; Department of Ecology and Evolutionary Biology, University of Toronto, 25 Harbord Street, Toronto, ON, M5S 3G5, Canada; Direction de la recherche forestière, Ministère des Ressources naturelles, 2700 Einstein, Québec, QC, G1P 3W8, Canada },
    AUTHOR_KEYWORDS = { Early land survey records; Historical forest ecology; Line descriptions; Northern hardwoods; Pre-settlement forest composition; Taxon dominance; Taxon prevalence },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1111/jvs.12142 },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-84898434938&doi=10.1111%2fjvs.12142&partnerID=40&md5=261fbba5290d5347b875ecf1a88d56e7 },
}

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