General Site Information
Site ID:US-Me2
Site Name:Metolius mature ponderosa pine
Tower Team: PI: Bev Law <bev.law@oregonstate.edu> - Oregon State University
FluxContact: Hyojung Kwon <hyojung.kwon@oregonstate.edu> - Oregon State University
BADMContact: Whitney Creason <whitney.creason@oregonstate.edu> - Oregon State University
BADMContact: Whitney Moore <Whitney.Moore@oregonstate.edu> - Oregon State University
Technician: Chad Hanson <chad.hanson@oregonstate.edu> - Oregon State University
Latitude:44.4523
Longitude:-121.5574
Elevation (m):1253
NetworkAmeriFlux
IGBP:ENF (Evergreen Needleleaf Forests)
Climate Koeppen:Csb (Mediterranean: mild with dry, warm summer)
Mean Annual Temperature (degrees C):6.28
Mean Annual Precipitation (mm):523
Data Products: AmeriFlux BASE Dataset
FLUXNET2015 Dataset
FLUXNET LaThuile Dataset
Data Availability: AmeriFlux BASE:   13 years (Duration: 2002 - 2014)
FLUXNET2015:   13 years (Duration: 2002 - 2014)
FLUXNET LaThuile:   3 years (Duration: 2003 - 2005)
Data Downloads to Date: AmeriFlux BASE:   196 unique downloads
FLUXNET2015:   380 unique downloads
FLUXNET LaThuile:   90 unique downloads
Data DOIs: AmeriFlux BASE DOI: 10.17190/AMF/1246076
Description:The mean stand age is 71 years old and the stand age of the oldest 10% of trees is about 108 years old. This site is one of the Metolius core cluster sites with different age and disturbance classes and part of the AmeriFlux network. The overstory is almost exclusively composed of ponderosa pine trees (Pinus ponderosa Doug. Ex P. Laws) with a few scattered incense cedars (Calocedrus decurrens (Torr.) Florin) and has a peak leaf area index (LAI) of 2.1 m2 m-2. Tree height is relatively homogeneous at about 18 m, and the mean tree density is approximately 339 trees ha-1 (Irvine et al., 2008). The understory is sparse with an LAI of 0.2 m2 m-2 and primarily composed of bitterbrush (Purshia tridentata (Push) DC.) and greenleaf manzanita (Arctostaphylos patula Greene). Soils at the site are sandy (69%/24%/7% sand/silt/clay at 0–0.2 m depth and 66%/27%/7% at 0.2–0.5 m depth, and 54%/ 35%/11% at 0.5–1.0 m depth), freely draining with a soil depth of approximately 1.5 m (Irvine et al., 2008; Law et al., 2001b; Schwarz et al., 2004).
Acknowledgments:The Metolius AmeriFlux research was supported by the Office of Science (BER), U.S. Department of Energy, Grant No. DE-FG02-06ER64318).
Site image(s):
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Publications relevant to understanding the site
BibliographyUsage
Campbell, J.L., and B.E. Law. 2005. Forest soil respiration across three climatically-distinct chronoseqeunces. Biogeochemistry 73:109-125 Analysis_Result
Campbell, J.L., O.J. Sun, and B.E. Law. 2004. Disturbance and net ecosystem production across three climatically distinct landscapes. Global Biogeochemical Cycles 18, No. 4, GB4017 Analysis_Result
Campbell, J.L., O.J. Sun, and B.E. Law. 2004. Supply-side controls on soil respiration among Oregon Forests. Global Change Biology 10:1857-1869 Analysis_Result
Coops, N. C., R.H. Waring, B.E. Law. 2005. Assessing the past and future distribution and productivity of ponderosa pine in the Pacific Northwest using a process model, 3-PG. Ecological Modelling 183:107-124 Reference
Irvine J, Law BE, Martin JG, and Vickers D (2008) Interannual variation in soil CO2 efflux and the response of root respiration to climate and canopy gas exchange in mature ponderosa pine. Global Change Biology, 14(12), 2848-2859 Primary_Citation
Irvine J, Law BE, Martin JG, and Vickers D (2008) Interannual variation in soil CO2 efflux and the response of root respiration to climate and canopy gas exchange in mature ponderosa pine. Global Change Biology, 14(12), 2848-2859. Primary_Citation
Irvine, J., B. E. Law, M. R. Kurpius, P. M. Anthoni, D. Moore and P. A. Schwarz. 2004. Age-related changes in ecosystem structure and function and effects on water and carbon exchange in ponderosa pine. Tree Physiology 24:753–763 Primary_Citation
Irvine, J., B.E. Law, M. Kurpius. 2005. Coupling of canopy gas exchange with root and rhizosphere respiration in ponderosa pine: correlations or controls? Biogeochemistry 73:271-282 Analysis_Result
K. A. Hibbard; B. E. Law; M. Reichstein; J. Sulzman. 2005. An analysis of soil respiration across northern hemisphere temperate ecosystemsBiogeochemistry. 73:1, 29-70. Reference
Kelliher, F.M., Ross, D.J., Law, B.E., Baldocchi, D.D., N.J. Rodda. 2004. Limitations to carbon mineralization in litter and mineral soil of young and old ponderosa pine forests. Forest Ecology and Management 191:201-213 Analysis_Result
Law, B.E., D. Turner, J. Campbell, O.J. Sun, S. Van Tuyl, W.D. Ritts, and W. B. Cohen. 2004. Disturbance and climate effects on carbon stocks and fluxes across Western Oregon USA. Global Change Biology 10:1429-1444 Reference
Law, B.E., D. Turner, M. Lefsky, J. Campbell, M. Guzy, O. Sun, S. Van Tuyl, W. Cohen. 2006. Carbon fluxes across regions: Observational constraints at multiple scales. In J. Wu, B. Jones, H. Li, O. Loucks, eds. Scaling and Uncertainty Analysis in Ecology: Methods and Applications. Springer, USA. Pages 167-190 Reference
McDowell, N.G., D.R. Bowling, B.J. Bond, J. Irvine, B.E. Law, P. Anthoni, and J.R. Ehleringer. 2004. Response of the carbon isotopic content of ecosystem, leaf, and soil respiration to meteorological and physiological driving factors in a Pinus ponderosa ecosystem. Global Biogeochemical Cycles. 18 Reference
R. N. Treuhaft; G. P. Asner; B. E. Law. 2003. Structure-based forest biomass from fusion of radar and hyperspectral observationsGeophysical Research Letters. 30:9, art. no.-1472. Reference
S. Van Tuyl; B. E. Law; D. P. Turner; A. I. Gitelman. 2005. Variability in net primary production and carbon storage in biomass across Oregon forests - an assessment integrating data from forest inventories, intensive sites, and remote sensingForest Ecology and Management. 209:3, 273-291. Reference
Schwarz, P.A., B.E. Law, M. Williams, J. Irvine, M. Kurpius, and D. Moore. 2004. Climatic versus biotic constraints on carbon and water fluxes in seasonally drought-affected ponderosa pine ecosystems. Global Biogeochemical Cycles. 18. GB4007 Reference
Schwarz, P.A., B.E. Law, M. Williams, J. Irvine, M. Kurpius, and D. Moore. 2004. Climatic versus biotic constraints on carbon and water fluxes in seasonally drought-affected ponderosa pine ecosystems. Global Biogeochemical Cycles. 18. GB4007. Reference
Sun, O.J., J. Campbell, B.E. Law, V. Wolf. 2004. Dynamics of carbon storage in soils and detritus across chronosequences of different forest types in the Pacific Northwest, USA. Global Change Biology 10:1470-1481 Reference
Thomas, C. K., Law, B. E., Irvine, J., Martin, J. G., Pettijohn, J. C., and Davis, K. J., 2009. Seasonal hydrology explains inter-annual and seasonal variation in carbon and water exchange in a semi-arid mature Ponderosa Pine forest in Central Oregon, J. Geophys. Res. Biogeosciences (in press) Primary_Citation
Treuhaft, R.N., B.E. Law, G.P. Asner. 2004. Forest attributes from radar interferometric structure and its fusion with optical remote sensing. BioScience 54:561-572 Reference
Turner, D.P., Guzy, M. Lefsky, M. A., Rits, W. D., S. Van Tuyl, B. E. Law., 2004. Monitoring Forest Carbon Sequestration with Remote Sensing and Carbon Cycle Modeling. Environmental Management. 33(4):457–466004. Dynamics of carbon storage in soils and detritus across chronosequences of different forest types in the Pacific Northwest, USA. Global Change Biology 10:1470-1481 Reference
Turner, D.P., W.D. Ritts, J. Styles, Z. Yang, W.B. Cohen, B.E. Law, P.E. Thornton. 2006. A simple carbon flux model to monitor the effects of interannual variation in climate and fire regime on regional fluxes. Tellus 58B:476-490 Reference
Vickers D., Goeckede M., and Law B. 2010. Uncertainty estimates for 1-hour averaged turbulence fluxes of carbon dioxide, latent heat and sensible heat. Tellus: Series B 62: 87-99. Primary_Citation
Vickers, D., C. Thomas, C. Pettijohn, J.G. Martin, and B.E. Law. 2012. Five years of carbon fluxes and inherent water-use efficiency at two semi-arid pine forests with different disturbance histories. Tellus B 64: 17159. Primary_Citation
Vickers, D., C.Thomas, and B.Law, 2009. Random and systematic CO2 flux sampling errors for tower measurements over forests in the convective boundary layer. Agric. Forest Meteorol. 149, 73-83 Primary_Citation
Vickers, D., J. Irvine, J.G. Martin, and B.E. Law. 2012. Nocturnal subcanopy flow regimes and missing carbon dioxide. Agric. Forest Meteorol. 152: 101-108. Primary_Citation
Vickers, Dean, Christoph K. Thomas , Jonathan G. Martin , Beverly Law. 2009.Self-correlation between assimilation and respiration resulting from flux partitioning of eddy-covariance CO2 fluxes. Agricultural and Forest Meteorology 149: 1552–1555. Primary_Citation
Vickers, Dean, Christoph K. Thomas , Jonathan G. Martin , Beverly Law. 2009.Self-correlation between assimilation and respiration resulting from flux partitioning of eddy-covariance CO2 fluxes. Agricultural and Forest Meteorology 149: 1552–15552486.2008.01682.x Primary_Citation

These pages show the current information available at http://ameriflux.lbl.gov about this tower.
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