Publications Found: 1244
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

Age Effects On Carbon Fluxes In Temperate Pine Forests
Peichl, M., Arain, M. A., Brodeur, J. J.

This study evaluates age-related patterns of ecosystem carbon (C) fluxes in a chronosequence (5-, 18-, 33-, and 68-year old in 2007) of planted pine (Pinus strobus L.) forests in southern Ontario, Canada, from 2003 to 2007. Carbon fluxes determined with the eddy covariance technique were normalized by differences in site …

Journal: Agricultural And Forest Meteorology, Volume 150 (7-8): 1090-1101 (2010). DOI: 10.1016/j.agrformet.2010.04.008 Sites: CA-TP1, CA-TP2, CA-TP3, CA-TP4

Global Convergence In The Temperature Sensitivity Of Respiration At Ecosystem Level
Mahecha, M. D., Reichstein, M., Carvalhais, N., Lasslop, G., Lange, H., Seneviratne, S. I., Vargas, R., Ammann, C., Arain, M. A., Cescatti, A., Janssens, I. A., Migliavacca, M., Montagnani, L., Richardson, A. D.

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) …

Journal: Science, Volume 329 (5993): 838-840 (2010). DOI: 10.1126/science.1189587 Sites: BR-Ma2

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

Hydrologic Response To Precipitation Pulses Under And Between Shrubs In The Chihuahuan Desert, Arizona
Moran, M. S., Hamerlynck, E. P., Scott, R. L., Stone, J. J., Holifield Collins, C. D., Keefer, T. O., Bryant, R., DeYoung, L., Nearing, G. S., Sugg, Z., Hymer, D. C.

Observations of the temporal and spatial distribution of poststorm soil moisture in open shrublands and savannas are limited, yet they are critical to understanding the interaction and feedback between moisture distribution and canopies. The objective of this analysis was to study the hydrologic impacts of precipitation pulses on …

Journal: Water Resources Research, Volume 46 (W10509): n/a-n/a (2010). DOI: 10.1029/2009WR008842 Sites: US-Whs

Carbon Dioxide And Methane Fluxes From Arctic Mudboils
Wilson, K. S., Humphreys, E. R.

Climate change is expected to alter the Arctic’s carbon (C) balance and changes in these C-rich ecosystems may contribute to a positive feedback on global climate change. Low-center mudboils, a form of patterned ground in the Arctic, are distinct landforms in which the exchange of greenhouse gases between the atmosphere and soil …

Journal: Canadian Journal Of Soil Science, Volume 90 (3): 441-449 (2010). DOI: 10.4141/CJSS09073 Sites: CA-DL2

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

Tree Species Effects On Ecosystem Water-Use Efficiency In A High-Elevation, Subalpine Forest
Monson, R. K., Prater, M. R., Hu, J., Burns, S. P., Sparks, J. P., Sparks, K. L., Scott-Denton, L. E.

Ecosystem water-use efficiency (eWUE; the ratio of net ecosystem productivity to evapotranspiration rate) is a complex landscape-scale parameter controlled by both physical and biological processes occurring in soil and plants. Leaf WUE (lWUE; the ratio of leaf CO2 assimilation rate to transpiration rate) is controlled at short time …

Journal: Oecologia, Volume 162 (2): 491-504 (2010). DOI: 10.1007/s00442-009-1465-z Sites: US-NR1

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

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