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Trace Gas Exchange Above The Floor Of A Deciduous Forest: 1. Evaporation And CO2 Efflux

by Fianna O'Brien - January 27, 2017

The eddy correlation method has great potential for directly measuring trace gas fluxes at the floor of a forest canopy, but a thorough validation study has not been yet conducted…. More

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Energy And Water Exchanges From A Temperate Pine Plantation Forest

by Fianna O'Brien - January 27, 2017

This paper summarizes the energy and water vapour fluxes for the first 14 months at a newly initiated flux tower site at a 65-year-old temperate conifer forest (Pinus strobus L.)… More

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Boreas Flight Measurements Of Forest-Fire Effects On Carbon Dioxide And Energy Fluxes

by Fianna O'Brien - January 27, 2017

Fire is the dominant stand-replacing agent in the Canadian boreal forest, but few quantitative measurements are available on the micrometeorological effects of fire. Airborne flux measurements during the BOREAS experiment… More

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Global Convergence In The Temperature Sensitivity Of Respiration At Ecosystem Level

by Fianna O'Brien - January 27, 2017

As climate change accelerates, it is important to know the likely impact of climate change on the carbon cycle (see the Perspective by Reich). Gross primary production (GPP) is a… More

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A Canopy Stomatal Resistance Model For Gaseous Deposition To Vegetated Surfaces

by Fianna O'Brien - January 27, 2017

A gaseous deposition model, based on a realistic canopy stomatal resistance submodel, is described, analyzed and tested. This model is designed as one of a hierarchy of simulations, leading up… More

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How To Quantify Tree Leaf Area Index In An Open Savanna Ecosystem: A Multi-Instrument And Multi-Model Approach

by Fianna O'Brien - January 27, 2017

Savannas are spatially heterogeneous, open ecosystems, thus efforts to quantify canopy structure with methods developed for homogeneous, closed canopies are prone to failure. We examine the applicability of two direct… More

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Annual Patterns And Budget Of CO2 Flux In An Arctic Tussock Tundra Ecosystem

by Fianna O'Brien - January 27, 2017

The functioning of Arctic ecosystems is not only critically affected by climate change, but it also has the potential for major positive feedback on climate. There is, however, relatively little… More

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An Evaluation Of Models For Partitioning Eddy Covariance-Measured Net Ecosystem Exchange Into Photosynthesis And Respiration

by Fianna O'Brien - January 27, 2017

We measured net ecosystem CO2 exchange (NEE) using the eddy covariance (EC) technique for 4 years at adjoining old field (OF), planted pine (PP) and hardwood forest (HW) ecosystems in… More

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Environmental Controls Over Net Ecosystem Carbon Exchange Of Scrub Oak In Central Florida

by Fianna O'Brien - January 27, 2017

Biological and physical controls regulating variation of seasonal and interannual ecosystem carbon exchange in a scrub oak ecosystem in central Florida were determined by measuring net ecosystem exchange of CO2… More

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Fluxes Of Oxygenated Volatile Organic Compounds From A Ponderosa Pine Plantation

by Fianna O'Brien - January 27, 2017

We present the first canopy-scale, continuous, long-term flux measurements of a suite of oxygenated volatile organic compounds (OVOCs). Fluxes were measured above a ponderosa pine plantation, adjacent to the Blodgett… More

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