Climatic Change Causes Abrupt Shifts in Forests, Inferred from a High-resolution Lacustrine Record, Southwestern Quebec, Canada

FieldValue
dc.contributor.authorPaquette, Nathalie
dc.date.accessioned2012-10-31T16:35:09Z
dc.date.available2012-10-31T16:35:09Z
dc.date.created2012
dc.date.issued2012
dc.identifier.urihttp://hdl.handle.net/10393/23473
dc.identifier.urihttp://dx.doi.org/10.20381/ruor-6169
dc.description.abstractA pollen profile from varved lake sediments sampled at 10-year intervals and spanning the past 1000 years is analyzed to understand the effects of climate change and anthropogenic activity on forests in southwestern Quebec. The forests responded rapidly to changes in temperature and precipitation during the Medieval Warm Period and Little Ice Age as well as to land-use changes associated with the European Settlement of the area. The transition into the Little Ice Age was abrupt and had significant impact on the pollen production within a couple of decades. A synthesis of this record with other high-resolution and well-dated pollen data from the conifer-hardwood forest of eastern North America shows consistent results across the whole area, indicating that very-high resolution pollen data can provide insight into multi-decadal climate variability and its impact on forest vegetation. Tree-ring records from the region show inter-annual fluctuations not always consistent between sites, while high-resolution pollen data record multi-decadal to century changes which enable us to interpret climatic effects on plant communities.
dc.language.isoen
dc.publisherUniversité d'Ottawa / University of Ottawa
dc.subjectVarves
dc.subjectQuébec
dc.subjectHolocene
dc.subjectPollen
dc.subjectForest Dynamics
dc.subjectPaleoclimate Reconstruction
dc.subjectCharcoal
dc.subjectEastern Deciduous Forest
dc.subjectLake Sediments
dc.titleClimatic Change Causes Abrupt Shifts in Forests, Inferred from a High-resolution Lacustrine Record, Southwestern Quebec, Canada
dc.typeThesis
dc.faculty.departmentGéographie / Geography
dc.contributor.supervisorGajewski, Konrad
dc.embargo.termsimmediate
dc.degree.nameMSc
dc.degree.levelmasters
dc.degree.disciplineArts
thesis.degree.nameMSc
thesis.degree.levelMasters
thesis.degree.disciplineArts
uottawa.departmentGéographie / Geography
CollectionThèses, 2011 - // Theses, 2011 -

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