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Temporal Dynamics Of Aerodynamic Canopy Height Derived From Eddy Covariance Momentum Flux Data Across North American Flux Networks

by Housen Chu - October 4, 2018

Aerodynamic canopy height (ha) is the effective height of vegetation canopy for its influence on atmospheric fluxes and is a key parameter of surface‐atmosphere coupling. However, methods to estimate ha… More

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A Novel Correction For Biases In Forest Eddy Covariance Carbon Balance

by Bill Munger - February 21, 2018

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Nitrous Oxide Fluxes And Nitrogen Cycling Along A Pasture Chronosequence In Central Amazonia, Brazil

by Fianna O'Brien - January 31, 2017

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Respiration From A Tropical Forest Ecosystem: Partitioning Of Sources And Low Carbon Use Efficiency

by Fianna O'Brien - January 31, 2017

Understanding how tropical forest carbon balance will respond to global change requires knowledge of individual heterotrophic and autotrophic respiratory sources, together with factors that control respiratory variability. We measured leaf,… More

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Carbon In Amazon Forests: Unexpected Seasonal Fluxes And Disturbance-Induced Losses

by Fianna O'Brien - January 31, 2017

The net ecosystem exchange of carbon dioxide was measured by eddy covariance methods for 3 years in two old-growth forest sites near Santarém, Brazil. Carbon was lost in the wet… More

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Ecological Research In The Large-Scale Biosphere– Atmosphere Experiment In Amazonia: Early Results

by Fianna O'Brien - January 31, 2017

The Large-scale Biosphere–Atmosphere Experiment in Amazonia (LBA) is a multinational, interdisciplinary research program led by Brazil. Ecological studies in LBA focus on how tropical forest conversion, regrowth, and selective logging… More

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Variation In Wood Density Determines Spatial Patterns Inamazonian Forest Biomass

by Fianna O'Brien - January 30, 2017

Uncertainty in biomass estimates is one of the greatest limitations to models of carbon flux in tropical forests. Previous comparisons of field-based estimates of the aboveground biomass (AGB) of trees… More

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Carbon Balance And Vegetation Dynamics In An Old-Growth Amazonian Forest

by Fianna O'Brien - January 30, 2017

Amazon forests could be globally significant sinks or sources for atmospheric carbon dioxide, but carbon balance of these forests remains poorly quantified. We surveyed 19.75 ha along four 1-km transects… More

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The Robustness Of Eddy Correlation Fluxes For Amazon Rain Forest Conditions

by Fianna O'Brien - January 30, 2017

We analyzed errors and uncertainties in time-integrated eddy correlation data for sites in the Amazon. A well-known source of potential error in eddy correlation is through possible advective losses of… More

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Effects Of Meteorological Variations On The CO2 Exchange Of A Brazilian Transitional Tropical Forest

by Fianna O'Brien - January 30, 2017

The net ecosystem CO2 exchange (NEE) of a 28–30 m tall transitional (ecotonal) tropical forest of the Brazilian Amazon was quantified using tower-based eddy covariance. Measurements were made between August… More

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