Trends in Quercus Macrocarpa Vessel Areas and their Implications for Tree-Ring Paleoflood Studies

Persistent Link:
http://hdl.handle.net/10150/262561
Title:
Trends in Quercus Macrocarpa Vessel Areas and their Implications for Tree-Ring Paleoflood Studies
Author:
St. George, Scott; Nielsen, Erik; Conciatori, France; Tardif, Jacques
Affiliation:
Geological Survey of Canada, Winnipeg, Manitoba, Canada; Manitoba Geological Survey, Winnipeg, Manitoba, Canada; Centre for Forest Interdisciplinary Research, University of Winnipeg, Winnipeg, Manitoba, Canada
Issue Date:
2002
Rights:
Copyright © Tree-Ring Society. All rights reserved.
Collection Information:
This item is part of the Tree-Ring Research (formerly Tree-Ring Bulletin) archive. It was digitized from a physical copy provided by the Laboratory of Tree-Ring Research at The University of Arizona. For more information about this peer-reviewed scholarly journal, please email the Editor of Tree-Ring Research at editor@treeringsociety.org.
Publisher:
Tree-Ring Society
Journal:
Tree-Ring Research
Citation:
St. George, S., Nielsen, E., Conciatori, F., Tardif, J. 2002. Trends in Quercus macrocarpa vessel areas and their implications for tree-ring paleoflood studies. Tree-Ring Research 58(1/2):3-10.
Abstract:
Changes in mean earlywood vessel areas in mature Quercus macrocarpa were analyzed to determine possible sources of bias in paleoflood records derived from anatomical tree-ring signatures. Tree-ring cores were collected at intervals along the vertical axis of four Q. macrocarpa in a flood-prone stand near the Red River in Manitoba. The WinCELL PRO image analysis system was used to measure mean vessel areas in each annual ring. Most cores displayed a pronounced juvenile increase in mean vessel area before stabilizing between 40 and 60 years. The lowest samples from several trees contain rings with anomalously small mean vessel areas that are coincident with high-magnitude Red River floods in 1950 and 1997. The anatomical response of Q. macrocarpa appears to be conditional on the relative timing of earlywood development and flooding. Flood signatures are most strongly developed near the tree base and become less evident up the trunk. Most signatures disappear between one and three meters in height. Differences in flood response between trees are likely caused by internal differences rather than hydrological or topographic factors. Paleoflood studies based on samples obtained exclusively at breast height may miss some anatomical flood signatures and underestimate flood frequency relative to earlier intervals.
Keywords:
Dendrochronology; Tree Rings
ISSN:
2162-4585; 1536-1098
Additional Links:
http://www.treeringsociety.org

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleTrends in Quercus Macrocarpa Vessel Areas and their Implications for Tree-Ring Paleoflood Studiesen_US
dc.contributor.authorSt. George, Scotten_US
dc.contributor.authorNielsen, Eriken_US
dc.contributor.authorConciatori, Franceen_US
dc.contributor.authorTardif, Jacquesen_US
dc.contributor.departmentGeological Survey of Canada, Winnipeg, Manitoba, Canadaen_US
dc.contributor.departmentManitoba Geological Survey, Winnipeg, Manitoba, Canadaen_US
dc.contributor.departmentCentre for Forest Interdisciplinary Research, University of Winnipeg, Winnipeg, Manitoba, Canadaen_US
dc.date.issued2002-
dc.rightsCopyright © Tree-Ring Society. All rights reserved.en_US
dc.description.collectioninformationThis item is part of the Tree-Ring Research (formerly Tree-Ring Bulletin) archive. It was digitized from a physical copy provided by the Laboratory of Tree-Ring Research at The University of Arizona. For more information about this peer-reviewed scholarly journal, please email the Editor of Tree-Ring Research at editor@treeringsociety.org.en_US
dc.publisherTree-Ring Societyen_US
dc.identifier.journalTree-Ring Researchen_US
dc.identifier.citationSt. George, S., Nielsen, E., Conciatori, F., Tardif, J. 2002. Trends in Quercus macrocarpa vessel areas and their implications for tree-ring paleoflood studies. Tree-Ring Research 58(1/2):3-10.en_US
dc.description.abstractChanges in mean earlywood vessel areas in mature Quercus macrocarpa were analyzed to determine possible sources of bias in paleoflood records derived from anatomical tree-ring signatures. Tree-ring cores were collected at intervals along the vertical axis of four Q. macrocarpa in a flood-prone stand near the Red River in Manitoba. The WinCELL PRO image analysis system was used to measure mean vessel areas in each annual ring. Most cores displayed a pronounced juvenile increase in mean vessel area before stabilizing between 40 and 60 years. The lowest samples from several trees contain rings with anomalously small mean vessel areas that are coincident with high-magnitude Red River floods in 1950 and 1997. The anatomical response of Q. macrocarpa appears to be conditional on the relative timing of earlywood development and flooding. Flood signatures are most strongly developed near the tree base and become less evident up the trunk. Most signatures disappear between one and three meters in height. Differences in flood response between trees are likely caused by internal differences rather than hydrological or topographic factors. Paleoflood studies based on samples obtained exclusively at breast height may miss some anatomical flood signatures and underestimate flood frequency relative to earlier intervals.en_US
dc.subjectDendrochronologyen_US
dc.subjectTree Ringsen_US
dc.identifier.citationSt. George, S., Nielsen, E., Conciatori, F., Tardif, J. 2002. Trends in Quercus macrocarpa vessel areas and their implications for tree-ring paleoflood studies. Tree-Ring Research 58(1/2):3-10.en_US
dc.identifier.issn2162-4585-
dc.identifier.issn1536-1098-
dc.identifier.urihttp://hdl.handle.net/10150/262561-
dc.identifier.journalTree-Ring Researchen_US
dc.typeArticleen_US
dc.relation.urlhttp://www.treeringsociety.orgen_US
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