Publications

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Publications Found: 46

Limitations To Carbon Mineralization In Litter And Mineral Soil Of Young And Old Ponderosa Pine Forests
Kelliher, F., Ross, D., Law, B., Baldocchi, D., Rodda, N.

Summer drought is a feature of the semi-arid region of central Oregon, USA, where vegetation naturally develops into ponderosa pine (Pinus ponderosa var. Laws) forest. Forest management consists of clearcut harvest and natural regeneration. Soil microbial activity is interconnected with forest processes because substrate …


Journal: Forest Ecology And Management, Volume 191 (1-3): 201-213 (2004). DOI: 10.1016/j.foreco.2003.12.005 Sites: US-Me4, US-Me5

Age-Related Changes In Ecosystem Structure And Function And Effects On Water And Carbon Exchange In Ponderosa Pine
Irvine, J., Law, B. E., Kurpius, M. R., Anthoni, P. M., Moore, D., Schwarz, P. A.

As forests age, their structure and productivity change, yet in some cases, annual rates of water loss remain unchanged. To identify mechanisms that might explain such observations, and to determine if widely different age classes of forests differ functionally, we examined young (Y, 25 years), mature (M, 90 years) …


Journal: Tree Physiology, Volume 24 (7): 753-763 (2004). DOI: 10.1093/treephys/24.7.753 Sites: US-Me4, US-Me5

Disturbance And Climate Effects On Carbon Stocks And Fluxes Across Western Oregon USA
Law, B. E., Turner, D., Campbell, J., Sun, O. J., Van Tuyl, S., Ritts, W. D., Cohen, W. B.

We used a spatially nested hierarchy of field and remote-sensing observations and a process model, Biome-BGC, to produce a carbon budget for the forested region of Oregon, and to determine the relative influence of differences in climate and disturbance among the ecoregions on carbon stocks and fluxes. The simulations suggest that …


Journal: Global Change Biology, Volume 10 (9): 1429-1444 (2004). DOI: 10.1111/j.1365-2486.2004.00822.x Sites: US-Me2, US-Me4, US-Me5

Effects Of Land Use And Fine-Scale Environmental Heterogeneity On Net Ecosystem Production Over A Temperate Coniferous Forest Landscape
Turner, D. P., Guzy, M., Lefsky, M. A., Van Tuyl, S., Sun, O., Daly, C., Law, B. E.


Journal: Tellus Series B-Chemical and Physical Meteorology, Volume 55 (2): 657-668 (2003). DOI: 10.1034/j.1600-0889.2003.01416.x Sites: US-Me4

Oxygen Isotope Content Of CO2 In Nocturnal Ecosystem Respiration: 1. Observations In Forests Along A Precipitation Transect In Oregon, USA
Bowling, D. R., McDowell, N. G., Welker, J. M., Bond, B. J., Law, B. E., Ehleringer, J. R.

The oxygen isotope content of nocturnal ecosystem respiration (δ18OR) was examined in forests along a precipitation gradient in Oregon, USA, to determine whether site-to-site variation in δ18OR was more strongly related to variation in δ18O of precipitation or to evaporative …


Journal: Global Biogeochemical Cycles, Volume 17 (4): n/a-n/a (2003). DOI: 10.1029/2003gb002081 Sites: US-Me4

Oxygen Isotope Content Of CO2 in Nocturnal Ecosystem Respiration: 2. Short-Term Dynamics Of Foliar And Soil Component Fluxes In An Old-Growth Ponderosa Pine Forest
Bowling, D. R., McDowell, N. G., Welker, J. M., Bond, B. J., Law, B. E., Ehleringer, J. R.

The oxygen isotope contents (δ18O) of soil, xylem, and leaf water and ecosystem respiration were studied in a ponderosa pine forest during summer 2001. Our goal was to assess whether δ18O of CO2could be used to quantify the relative contributions of soil and foliar respiration to total nocturnal …


Journal: Global Biogeochemical Cycles, Volume 17 (4): n/a-n/a (2003). DOI: 10.1029/2003gb002082 Sites: US-Me4

Modeling Temporal And Large-Scale Spatial Variability Of Soil Respiration From Soil Water Availability, Temperature And Vegetation Productivity Indices
Reichstein, M., Rey, A., Freibauer, A., Tenhunen, J., Valentini, R., Banza, J., Casals, P., Cheng, Y., Grünzweig, J. M., Irvine, J., Joffre, R., Law, B. E., Loustau, D., Miglietta, F., Oechel, W., Ourcival, J., Pereira, J. S., Peressotti, A., Ponti, F., Qi, Y., Rambal, S., Rayment, M., Romanya, J., Rossi, F., Tedeschi, V., Tirone, G., Xu, M., Yakir, D.

Field-chamber measurements of soil respiration from 17 different forest and shrubland sites in Europe and North America were summarized and analyzed with the goal to develop a model describing seasonal, interannual and spatial variability of soil respiration as affected by water availability, temperature, and site properties. The …


Journal: Global Biogeochemical Cycles, Volume 17 (4): n/a-n/a (2003). DOI: 10.1029/2003gb002035 Sites: US-Blo, US-Me4, US-Me5, US-SO3

Changes In Carbon Storage And Fluxes In A Chronosequence Of Ponderosa Pine
Law, B. E., Sun, O. J., Campbell, J., Van Tuyl, S., Thornton, P. E.

Forest development following stand-replacing disturbance influences a variety of ecosystem processes including carbon exchange with the atmosphere. On a series of ponderosa pine (Pinius ponderosa var. Laws.) stands ranging from 9 to> 300 years in central Oregon, USA, we used biological measurements to estimate carbon …


Journal: Global Change Biology, Volume 9 (4): 510-524 (2003). DOI: 10.1046/j.1365-2486.2003.00624.x Sites: US-Me4, US-Me5

Seasonal Differences In Carbon And Water Vapor Exchange In Young And Old-Growth Ponderosa Pine Ecosystems
Anthoni, P. M., Unsworth, M. H., Law, B. E., Irvine, J., Baldocchi, D. D., Tuyl, S. V., Moore, D.

Eddy covariance measurements of carbon dioxide and water vapor exchange were made above a young and an old-growth ponderosa pine (Pinus ponderosa Dougl. ex P. & C. Laws) ecosystem located in a semiarid environment in central Oregon. The old-growth stand (O site) is a mixture of 250- and 50-year-old ponderosa …


Journal: Agricultural And Forest Meteorology, Volume 111 (3): 203-222 (2002). DOI: 10.1016/s0168-1923(02)00021-7 Sites: US-Me4, US-Me5

Seasonality Of Ecosystem Respiration And Gross Primary Production As Derived From FLUXNET Measurements
Falge, E., Baldocchi, D., Tenhunen, J., Aubinet, M., Bakwin, P., Berbigier, P., Bernhofer, C., Burba, G., Clement, R., Davis, K. J., Elbers, J. A., Goldstein, A. H., Grelle, A., Granier, A., Guðmundsson, J., Hollinger, D., Kowalski, A. S., Katul, G., Law, B. E., Malhi, Y., Meyers, T., Monson, R. K., Munger, J., Oechel, W., Paw U, K. T., Pilegaard, K., Rannik, Ü., Rebmann, C., Suyker, A., Valentini, R., Wilson, K., Wofsy, S.

Differences in the seasonal pattern of assimilatory and respiratory processes are responsible for divergences in seasonal net carbon exchange among ecosystems. Using FLUXNET data (
Journal: Agricultural And Forest Meteorology, Volume 113 (1-4): 53-74 (2002). DOI: 10.1016/s0168-1923(02)00102-8 Sites:
US-Blo, US-Dk3, US-Ho1, US-Me4