AmeriFlux Publications from the Community

Annual patterns and budget of CO2 flux in an Arctic tussock tundra ecosystem
Oechel, Walter. C., Cheryl. A. Laskowski, George. Burba, Beniamino. Gioli, Aram. A. M. Kalhori

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 information on the role, patterns, and vulnerabilities of CO2 ﬂuxes during the nonsummer seasons in Arctic ecosystems. Presented here is …

Journal: Journal of Geophysical Research: Biogeosciences, Volume 119 (3): 323-339 (2014), ISBN . DOI: 10.1002/2013JG002431 Sites: US-Atq

Disentangling The Confounding Effects Of PAR And Air Temperature On Net Ecosystem Exchange At Multiple Time Scales
Ouyang, Z., Chen, J., Becker, R., Chu, H., Xie, J., Shao, C., John, R.

Net ecosystem exchange of CO₂ (NEE) in temperate forests is modulated by multiple microclimatic factors. The effects of these factors vary across time scales, with some correlated to produce confounding effects. Photosynthetically active radiation (PAR) and air temperature (Ta) are among the two most important drivers …

Journal: Ecological Complexity, Volume 19: 46-58 (2014), ISBN . DOI: 10.1016/j.ecocom.2014.04.005 Sites: US-Oho

Long-Term Variability In The Water Budget And Its Controls In An Oak-Dominated Temperate Forest
Xie, J., Sun, G., Chu, H., Liu, J., McNulty, S. G., Noormets, A., John, R., Ouyang, Z., Zha, T., Li, H., Guan, W., Chen, J.

Water availability is one of the key environmental factors that control ecosystem functions in temperate forests. Changing climate is likely to alter the ecohydrology and other ecosystem processes, which affect forest structures and functions. We constructed a multi-year water budget (2004–2010) and quantified environmental controls …

Journal: Hydrological Processes, Volume 28 (25): 6054-6066 (2014), ISBN . DOI: 10.1002/hyp.10079 Sites: US-Oho

Airborne Laser Scanner-Assisted Estimation Of Aboveground Biomass Change In A Temperate Oak–Pine Forest
Skowronski, N. S., Clark, K. L., Gallagher, M., Birdsey, R. A., Hom, J. L.

We estimated aboveground tree biomass and change in aboveground tree biomass using repeated airborne laser scanner (ALS) acquisitions and temporally coincident ground observations of forest biomass, for a relatively undisturbed period (2004–2007; ∆_07–04), a contrasting period of disturbance (2007–2009; ∆_09–07), …

Journal: Remote Sensing Of Environment, Volume 151: 166-174 (2014), ISBN . DOI: 10.1016/j.rse.2013.12.015 Sites: US-Slt

Influence And Predictive Capacity Of Climate Anomalies On Daily To Decadal Extremes In Canopy Photosynthesis
Desai, A. R.

Significant advances have been made over the past decades in capabilities to simulate diurnal and seasonal variation of leaf-level and canopy-scale photosynthesis in temperate and boreal forests. However, long-term prediction of future forest productivity …

Journal: Photosynthesis Research, Volume 119 (1-2): 31-47 (2014), ISBN . DOI: 10.1007/s11120-013-9925-z Sites: US-PFa

Landscape-Scale Variability In Soil Organic Carbon Storage In The Central Canadian Arctic
Campeau, A. B., Lafleur, P. M., Humphreys, E. R.

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 soils constitute a vast, but poorly quantified, pool of soil organic carbon (SOC). The uncertainty associated with pan-Arctic SOC …

Journal: Canadian Journal Of Soil Science, Volume 94 (4): 477-488 (2014), ISBN . DOI: 10.4141/cjss-2014-018 Sites: CA-DL1, CA-DL2

Annual Patterns And Budget Of CO2 Flux In An Arctic Tussock Tundra Ecosystem
Oechel, W. C., Laskowski, C. A., Burba, G., Gioli, B., Kalhori, A. A.

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 information …

Journal: Journal Of Geophysical Research: Biogeosciences, Volume 119 (3): 323-339 (2014), ISBN . DOI: 10.1002/2013JG002431 Sites: US-Atq

Climate Change And Fire Management In The Mid-Atlantic Region
Clark, K. L., Skowronski, N., Renninger, H., Scheller, R.

In this review, we summarize the potential impacts of climate change on wildfire activity in the mid-Atlantic region, and then consider how the beneficial uses of prescribed fire could conflict with mitigation needs for climate change, focusing on patters of carbon (C) sequestration by forests in the region. We use a synthesis of …

Journal: Forest Ecology And Management, Volume 327: 306-315 (2014), ISBN . DOI: 10.1016/j.foreco.2013.09.049 Sites: US-Ced

Energy Budget Closure Observed In Paired Eddy Covariance Towers With Increased And Continuous Daily Turbulence
Anderson, R. G., Wang, D.

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 changes, advection of energy, and larger scale turbulent processes that cannot be resolved by field EC. To investigate the energy …

Journal: Agricultural And Forest Meteorology, Volume 184: 204-209 (2014), ISBN . DOI: 10.1016/j.agrformet.2013.09.012 Sites: US-SuS, US-SuW

Ecosystem CO2 /H2O Fluxes Are Explained By Hydraulically Limited Gas Exchange During Tree Mortality From Spruce Bark Beetles
Frank, J. M., Massman, W. J., Ewers, B. E., Huckaby, L. S., Negrón, J. F.

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 predict …

Journal: Journal Of Geophysical Research: Biogeosciences, Volume 119 (6): 1195-1215 (2014), ISBN . DOI: 10.1002/2013jg002597 Sites: US-GLE

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