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13-17 May 2013
Tucson, Arizona
US/Arizona timezone
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Isotopes in Dendrochronolgy

Place

Location: Tucson, Arizona
Address: Doubletree Reid Park 445 S. Alvernon Way Tucson, AZ 85711
Room: 0
Date: 17 May 08:30 - 10:10

Conveners

    • Dr. Csank, Adam (Nipissing University)
    • Dr. Belmecheri, Soumaya (The Pennsylvania State University)

Timetable | Contribution List

Displaying 5 contributions out of 5
Type: Oral Presentation Session: Isotopes in Dendrochronolgy
Track: Isotopes in dendrochronology
A geochemical model involving meteorological parameters that govern physiochemical fractionation of carbon isotopes during cellulose production in tree rings has been developed. This model is able to extend the atmospheric partial pressure of carbon dioxide (Ca) data in the tropics and northern sub-tropics at 10 sites to the first decade of the last century where no Ca data were available before 1 ... More
Presented by Ms. Trina BOSE on 17/05/2013 at 16:10
Type: Oral Presentation Session: Isotopes in Dendrochronolgy
Track: Isotopes in dendrochronology
Improving the understanding of past climate in the Mediterranean basin is still a challenge due to the very distinct seasonality and high climatic variability inherent to this region. Studying the climate of the Iberian Peninsula is particularly complicated because of the complex orography and the atmospheric circulation patterns composed by the influence of three climatic regimes: Atlantic, conti ... More
Presented by Dr. Laia ANDREU-HAYLES on 17/05/2013 at 09:50
Type: Oral Presentation Session: Isotopes in Dendrochronolgy
Track: Isotopes in dendrochronology
Rising atmospheric CO2, nitrogen (N) deposition and changing precipitation patterns in the northeastern U.S. can influence tree growth and water use efficiency (WUE) through effects on plant water and nutrient relations, productivity, and photosynthetic capacity. To assess these impacts, we collected increment cores from the dominant tree species Quercus velutina from the Chronic Nitrogen Amendmen ... More
Presented by Katie JENNINGS on 17/05/2013 at 15:30
Type: Oral Presentation Session: Isotopes in Dendrochronolgy
Track: Isotopes in dendrochronology
We present a new cellulose extraction, where alpha cellulose is extracted directly from 1mm-thick laths. We prepared 1mm-thick cross sections using diamond saws (Leica SP1600) from wood of teak, fir, beech etc. The laths were enclosed in custom designed cases made of Teflon (Teflon punching sheets, thickness 0.5mm, hole size 1.5mm, pitch 3mm, TIC Corporation, Tokyo, Japan). The small holes of the ... More
Presented by Dr. Akira KAGAWA on 17/05/2013 at 16:30
Type: Oral Presentation Session: Isotopes in Dendrochronolgy
Track: Isotopes in dendrochronology
Here we present results from a study conducted at Harvard Forest (Petersham, Massachusetts) to examine the potential relationship between δ13C in dominant trees and GPP measured by the Harvard Forest flux tower (1992-2010). The δ13C analysed from Tsuga canadensis and Quercus rubra trees growing in the flux tower footprint and corrected for the declining trend of atmospheric δ13C show a decreasi ... More
Presented by Dr. Soumaya BELMECHERI on 17/05/2013 at 15:50
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