Christian Bégin
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On the significance of long-term trends in tree-ring N isotopes – The interplay of soil conditions and regional NOx emissions Open
As anthropogenic nitrogen (N) emissions have been rising for decades, it is critical to develop natural archives that help understand how natural processes were modified in the past. Tree-ring δ15N values may represent such an indicator bu…
Nitrogen isotopes in the soil-to-tree continuum — Tree rings express the soil biogeochemistry of boreal forests exposed to moderate airborne emissions Open
Anthropogenic N emissions represent a potential threat for forest ecosystems, and environmental indicators that provide insight into the changing forest N cycle are needed. Tree ring N isotopic ratios (δ15N) appear as a contentious choice …
Response strategies of boreal spruce trees to anthropogenic changes in air quality and rising pCO2 Open
Little is known about how forests adjust their gas-exchange mode while atmospheric CO2 rises globally and air quality changes regionally. The present study aims at addressing this research gap for boreal spruce trees growing in three diffe…
Anthropogenic N – A global issue examined at regional scale from soils, to fungi, roots and tree rings Open
Globally increasing anthropogenic airborne emissions of reactive nitrogen (N) generate several environmental issues that require investigating how N accumulation modifies the N cycle. Tree-ring δ 15 N series may help understanding past and…
Teaching Corporate Governance in an MBA Class: Challenges and Opportunities Open
The objective of this article is to share our teaching experience of corporate governance courses in a MBA program. Our research approach to document our teaching experience of corporate governance, is based on a collaborative research met…
Underestimation of the Tambora effects in North American taiga ecosystems Open
The Tambora eruption (1815 AD) was one of the major eruptions of the last two millennia and has no equivalents over the last two centuries. Here, we collected an extensive network of early meteorological time series, climate simulation dat…
Modelling tree ring cellulose <i>δ</i> <sup>18</sup> O variations in two temperature-sensitive tree species from North and South America Open
Oxygen isotopes in tree rings (δ18OTR) are widely used to reconstruct past climates. However, the complexity of climatic and biological processes controlling isotopic fractionation is not yet fully understood. Here, we use the MAIDENiso mo…
Modelling tree ring cellulose δ18O variations in two temperature-sensitive tree species from North and South America Open
Oxygen isotopes in tree rings (δ18OTR) are widely used to reconstruct past climates. However, the complexity of climatic and biological processes controlling isotopic fractionation is not yet fully understood. Here, we use the MAIDENiso mo…
Modelling tree-ring cellulose δ <sup>18</sup> O variations of two temperature-sensitive tree species from North and South America Open
Oxygen isotopes in tree-rings (δ18OTR) are widely used to reconstruct past climates. However, the complexity of climatic and biological processes controlling isotopic fractionation is not yet fully understood. Here, we use the MAIDENiso mo…