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Vertical Partitioning Of CO2 Production Within A Temperate Forest Soil

by Fianna O'Brien - January 30, 2017

The major driving factors of soil CO2 production – substrate supply, temperature, and water content – vary vertically within the soil profile, with the greatest temporal variations of these factors… More

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Woody Debris Contribution To The Carbon Budget Of Selectively Logged And Maturing Mid-Latitude Forests

by Fianna O'Brien - January 30, 2017

Woody debris (WD) is an important component of forest C budgets, both as a C reservoir and source of CO2 to the atmosphere. We used an infrared gas analyzer and… More

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An Approach To Spatially Distributed Modeling Of Net Primary Production (NPP) At The Landscape Scale And Its Application In Validation Of EOS NPP Products

by Fianna O'Brien - January 30, 2017

Substantial research seeks to improve estimates of ecosystem processes and fluxes at a range of scales, notably from the stand scale (<1 km2) using ecosystem physiology and eddy covariance techniques,… More

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Analysis Of Litterfall In A Deciduous Forest On Walker Branch Watershed, Tennessee: Data Stratification By Two Alternative Methods

by Fianna O'Brien - January 30, 2017

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Integration Of CO2 Flux And Remotely-Sensed Data For Primary Production And Ecosystem Respiration Analyses In The Northern Great Plains: Potential For Quantitative Spatial Extrapolation

by Fianna O'Brien - January 30, 2017

Aim  Extrapolation of tower CO2 fluxes will be greatly facilitated if robust relationships between flux components and remotely sensed factors are established. Long-term measurements at five Northern Great Plains locations… More

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Ecosystem CO2 /H2O Fluxes Are Explained By Hydraulically Limited Gas Exchange During Tree Mortality From Spruce Bark Beetles

by Fianna O'Brien - January 30, 2017

Disturbances are increasing globally due to anthropogenic changes in land use and climate. This study determines whether a disturbance that affects the physiology of individual trees can be used to… More

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Energy Budget Closure Observed In Paired Eddy Covariance Towers With Increased And Continuous Daily Turbulence

by Fianna O'Brien - January 30, 2017

The lack of energy closure has been a longstanding issue with Eddy Covariance (EC). Multiple mechanisms have been proposed to explain the discrepancies in energy balance including diurnal energy storage… More

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Novel Technique For Remote Estimation Of CO2 Flux In Maize

by Fianna O'Brien - January 30, 2017

There is considerable interest in assessing the magnitude of carbon sources and sinks for agricultural lands, grasslands, and forests. In this paper, we propose a novel technique to remotely assess… More

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Seasonal And Interannual Variation In Carbon Dioxide Exchange And Carbon Balance In A Northern Temperate Grassland

by Fianna O'Brien - January 30, 2017

Net ecosystem carbon dioxide (CO2) exchange (NEE) was measured in a northern temperate grassland near Lethbridge, Alberta, Canada for three growing seasons using the eddy covariance technique. The study objectives… More

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Estimating Clear-Sky Regional Surface Fluxes In The Southern Great Plains Atmospheric Radiation Measurement Site With Ground Measurements And Satellite Observations

by Fianna O'Brien - January 30, 2017

The authors compared methods for estimating surface fluxes under clear-sky conditions over a large heterogeneous area from a limited number of ground measurements and from satellite observations using data obtained… More

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