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Energy Partitioning Between Latent And Sensible Heat Flux During The Warm Season At FLUXNET Sites

by Fianna O'Brien - January 27, 2017

The warm season (mid-June through late August) partitioning between sensible (H) and latent (LE) heat flux, or the Bowen ratio (β = H/LE), was investigated at 27 sites over 66… More

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A Global Relationship Between The Heterotrophic And Autotrophic Components Of Soil Respiration?

by Fianna O'Brien - January 27, 2017

Soil surface CO2 flux (RS) is overwhelmingly the product of respiration by roots (autotrophic respiration, RA) and soil organisms (heterotrophic respiration, RH). Many studies have attempted to partition RS into… More

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Carbon Distribution Of A Well- And Poorly-Drained Black Spruce Fire Chronosequence

by Fianna O'Brien - January 27, 2017

The objective of this study was to quantify carbon (C) distribution for boreal black spruce (Picea mariana (Mill.) BSP) stands comprising a fire chronosequence in northern Manitoba, Canada. The experimental… More

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Solar Radiation Within An Oak—Hickory Forest: An Evaluation Of The Extinction Coefficients For Several Radiation Components During Fully-Leafed And Leafless Periods

by Fianna O'Brien - January 27, 2017

Global shortwave, photosynthetically active, net and allwave radiation was measured above, and at several levels within an oak—hickory forest with instruments mounted on a moving tram system. Profiles of radiation… More

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The Effects Of Elevated CO2 On Nutrient Distribution In A Fire-Adapted Scrub Oak Forest

by Fianna O'Brien - January 27, 2017

Elevated carbon dioxide (CO2) caused greater accumulation of carbon (C) and nutrients in both vegetation and O horizons over a 5-yr sampling period in a scrub oak ecosystem in Florida…. More

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Response Of The Carbon Isotopic Content Of Ecosystem, Leaf, And Soil Respiration To Meteorological And Physiological Driving Factors In A Pinus Ponderosa Ecosystem

by Fianna O'Brien - January 27, 2017

Understanding the controls over ecosystem-respired δ13C (δ13CR) is important for applications of isotope-based models of the global carbon budget as well as for understanding ecosystem-level variation in isotopic discrimination (Δ)…. More

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Thinning Reduces Soil Carbon Dioxide But Not Methane Flux From Southwestern Usa Ponderosa Pine Forests

by Fianna O'Brien - January 27, 2017

Forest soils are important components of the global carbon cycle because they both store and release carbon. Carbon dioxide is released from soil to the atmosphere as a result of… More

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Landscape-Scale Variability In Soil Organic Carbon Storage In The Central Canadian Arctic

by Fianna O'Brien - January 27, 2017

Campeau, A. B., Lafleur, P. M. and Humphreys, E. R. 2014. Landscape-scale variability in soil organic carbon storage in the central Canadian Arctic. Can. J. Soil Sci. 94: 477–488. Arctic… More

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Response To Comment On "Impacts Of Fine Root Turnover On Forest NPP And Soil C Sequestration Potential"

by Fianna O'Brien - January 27, 2017

We commend Luo et al. (1) for their effort to extend the analysis of our data (2) and partition root C turnover into the turnover of structural C (SC) and… More

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Effect Of Remote Sensing Spatial Resolution On Interpreting Tower-Based Flux Observations

by Fianna O'Brien - January 27, 2017

Validation comparisons between satellite-based surface energy balance models and tower-based flux measurements over heterogeneous landscapes can be strongly influenced by the spatial resolution of the remote sensing inputs. In this… More

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