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David Moore - Current Projects |
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View from the central tower in Ring 4: Carbon dioxide fumation pipes at FACTS-1. |
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What I'm up to right now...
Finished my prelims and I'm working on papers, grant and some more research
Working on a few papers currently. The first deals with interannual variability of the CO2 effect on pine growth and productivity. We are finding strong positive relationships between the % stimulation of growth and productivity with temperature. The simplest explanation for this is an increase photorespiration during the hotter years- so that the stimulation of photosynthesis is greater during these times.
I'm starting to work on the growth response of hardwood trees in the understory of the FACE site. I hope to explore the effect of elevated CO2 on symmetric and asymmetric competition
I have uploaded my TERACC poster. It's a bit dated now - the updated version will hopefully be submitted for publication this year |
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Contact Info: |
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Name: |
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David Moore |
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Email: |
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davemoore61821@hotmail.com |
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My curriculum vitae |
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Links: --- click here for more links |
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www.life.uiuc.edu/delucia |
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www.life.uiuc.edu/programs/PEEB/ |
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Projects I'm doing.... |
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Growth and Productivity: Jeff Pippen (Duke University) reads dendrometer bands attached to over 200 trees. Jeff has repeated this monthly for 7 years. I analyze the data in a few different ways.
First we use the monthly data to define the growing season using a nonlinear curvefitting technique designed in collaboration with Susanne Aref (Dept of Statistics). Since pines are evergreen this measure of 'when the trees are growing' is essential to relating growth to rainfall and temperature.
Second I use the continual diameter measures to estimate the Relative Basal Area Increment - we noticed that big trees grow more than little trees and that the ammount of growth (the Basal Area Increment) is for the most part directly related to the Basal area of a given tree. To account for this we divide the ammount of growth by the size at the end of each year - giving us a Relative Basal Area Increment.
Third I calculate how much biomass is accumulated each year for each treatment. For this I use allometric equations which relate diameter to total tree size (Naidu & DeLucia 1998). These are the numbers that everyone is in interested in and they are the hardest to estimate. |
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Bole respiration: I'm trying to get reliable estimates of woody respiration so that we can estimate the Gross Primary Productivity of the forest plot at FACTS-1. This is me with a LiCor6400 soil chamber measuring the efflux from a pine tree at FACTS-1. Unfortunatly you need to know much more than the ammount of CO2 coming out of the stem. In addition we need to know the rate of sap flow (that's what the white boxes attached to the tree are for) and also the CO2 concentration within the tree. The CO2 coming out of the tree could also be affected by the CO2 in the soil water. We are using a comination of gas exchange, sap flow measures, 13C isotopes and hopefully some micro CO2 probes to work out how much CO2 is being respired by the woody tissue. (more...) |
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Hardwood Physiology: One of 8 exclosures in each FACE ring at FACTS-1 - Jackie Mohan (currently at Harvard) planted 14 different species into these plots. I carried out various physiology measurements on them in collaboration with Jackie and Rachel Knepp. This dataset was presented at ESA in 2002. Rachel studies the effects of elevated CO2 on Herbivory(click here), Jackie concentrated on growth and survival of these small seedlings I hope to completment this work with an analysis of the hardwoods which have naturally establish in the understory. |
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