Publications

Publications Found: 1437

Invasive Insects Impact Forest Carbon Dynamics
Clark, K. L., Skowronski, N., Hom, J.

Invasive insects can impact ecosystem functioning by altering carbon, nutrient, and hydrologic cycles. In this study, we used eddy covariance to measure net CO2 exchange with the atmosphere (NEE), and biometric measurements to characterize net ecosystem productivity (NEP) in oak- and pine-dominated forests that were defoliated …


Journal: Global Change Biology, Volume 16 (1): 88-101 (2010). DOI: 10.1111/j.1365-2486.2009.01983.x Sites: US-Ced, US-Slt

Carbon Dioxide, Methane, And Nitrous Oxide Exchanges In An Age-Sequence Of Temperate Pine Forests
Peichl, M., Arain, M.A., Ullah, S., Moore, T.

We investigated soil carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) exchanges in an age-sequence (4, 17, 32, 67 years old) of …


Journal: Global Change Biology, Volume 16 (8): 2198-2212 (2010). DOI: 10.1111/j.1365-2486.2009.02066.x Sites: CA-TP1, CA-TP2, CA-TP3, CA-TP4

A Multiscale And Multidisciplinary Investigation Of Ecosystem–Atmosphere CO2 Exchange Over The Rocky Mountains Of Colorado
Sun, J., Oncley, S. P., Burns, S. P., Stephens, B. B., Lenschow, D. H., Campos, T., Watt, A. S., Monson, R. K., Moore, D. J., Hu, J., Tschudi, M., Schimel, D. S., Aulenbach, S., Sacks, W. J., De Wekker, S. F., Lai, C., Lamb, B., Allwine, E., Coons, T., Ojima, D., Ellsworth, P. Z., Sternberg, L. S., Zhong, S., Clements, C., Anderson, D. E.

A significant fraction of Earth consists of mountainous terrain. However, the question of how to monitor the surface–atmosphere carbon exchange over complex terrain has not been fully explored. This article reports on studies by a team of investigators from U.S. universities and research institutes who carried out a multiscale …


Journal: Bulletin Of The American Meteorological Society, Volume 91 (2): 209-230 (2010). DOI: 10.1175/2009BAMS2733.1 Sites: US-NR1

Assimilation Exceeds Respiration Sensitivity To Drought: A FLUXNET Synthesis
Schwalm, C. R., Williams, C. A., Schaefer, K., Arneth, A., Bonal, D., Buchmann, N., Chen, J., Law, B. E., Lindroth, A., Luyssaert, S., Reichstein, M., Richardson, A. D.

The intensification of the hydrological cycle, with an observed and modeled increase in drought incidence and severity, underscores the need to quantify drought effects on …


Journal: Global Change Biology, Volume 16 (2): 657-670 (2010). DOI: 10.1111/j.1365-2486.2009.01991.x Sites: BR-Ma2

Evaluation Of Methods For Estimating Soil Carbon Dioxide Efflux Across A Gradient Of Forest Disturbance
Sullivan, B. W., Dore, S., Kolb, T. E., Hart, S. C., Montes-Helu, M. C.

Better understanding of variation in soil carbon dioxide (CO2) efflux caused by measurement techniques is needed, especially over gradients of site disturbance, …


Journal: Global Change Biology, Volume 16: 2449-2460 (2010). DOI: 10.1111/j.1365-2486.2009.02139.x Sites: US-Fuf, US-Fwf

Modeling Whole-Tree Carbon Assimilation Rate Using Observed Transpiration Rates And Needle Sugar Carbon Isotope Ratios
Hu, J., Moore, D. J., Riveros-Iregui, D. A., Burns, S. P., Monson, R. K.

• Understanding controls over plant–atmosphere CO 2 exchange is important for
quantifying carbon budgets across a range of spatial and temporal scales. In this
study, we used a simple approach to estimate whole-tree CO 2 assimilation rate
(A Tree ) in a subalpine forest ecosystem.
• We analysed the carbon isotope ratio …


Journal: New Phytologist, Volume 185 (4): 1000-1015 (2010). DOI: 10.1111/j.1469-8137.2009.03154.x Sites: US-NR1

How To Quantify Tree Leaf Area Index In An Open Savanna Ecosystem: A Multi-Instrument And Multi-Model Approach
Ryu, Y., Sonnentag, O., Nilson, T., Vargas, R., Kobayashi, H., Wenk, R., Baldocchi, D. D.

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 (litterfall, allometry) and five indirect (LAI-2000, …


Journal: Agricultural And Forest Meteorology, Volume 150 (1): 63-76 (2010). DOI: 10.1016/j.agrformet.2009.08.007 Sites: US-Ton

Hydraulic Redistribution Of Soil Water By Roots Affects Whole-Stand Evapotranspiration And Net Ecosystem Carbon Exchange
Domec, J., King, J. S., Noormets, A., Treasure, E., Gavazzi, M. J., Sun, G., McNulty, S. G.
  • Hydraulic redistribution (HR) of water via roots from moist to drier portions of the soil occurs in many ecosystems, potentially influencing both water use and carbon assimilation.
  • By measuring soil water content, sap flow and eddy covariance, we investigated the temporal variability of …

    Journal: New Phytologist, Volume 187 (1): 171-183 (2010). DOI: 10.1111/j.1469-8137.2010.03245.x Sites: US-NC1, US-NC2

Biometric And Eddy-Covariance Based Estimates Of Carbon Fluxes In An Age-Sequence Of Temperate Pine Forests
Peichl, M., Brodeur, J. J., Khomik, M., Arain, M. A.

We present four years (2005–2008) of biometric (B) and eddy-covariance (EC) measurements of carbon (C) fluxes to constrain estimates of gross primary production (GPP), net primary production (NPP), ecosystem respiration (RE) and net ecosystem production (NEP) in an age-sequence (6-, 19-, 34-, and 69-years-old in 2008) of pine forests …


Journal: Agricultural And Forest Meteorology, Volume 150 (7-8): 952-965 (2010). DOI: 10.1016/j.agrformet.2010.03.002 Sites: CA-TP1, CA-TP2, CA-TP3, CA-TP4

Plant-Soil Interactions And Acclimation To Temperature Of Microbial-Mediated Soil Respiration May Affect Predictions Of Soil CO2 Efflux
Curiel Yuste, J., Ma, S., Baldocchi, D. D.

It is well known that microbial-mediated soil respiration, the major source of CO2 from terrestrial ecosystems, is sensitive to temperature. Here, we hypothesize that some mechanisms, such as acclimation of microbial respiration to temperature and/or regulation by plant fresh C inputs of the temperature sensitivity of …


Journal: Biogeochemistry, Volume 98 (1-3): 127-138 (2010). DOI: 10.1007/s10533-009-9381-1 Sites: US-Ton