General Site Information
Site ID:CA-Oas
Site Name:Saskatchewan - Western Boreal, Mature Aspen
Tower Team: PI: T. Andrew Black <> - The University of British Columbia
AncContact: Marc-Andre Giasson <> -
Elevation (m):530
NetworkAmeriFlux, Fluxnet-Canada
IGBP:DBF (Deciduous Broadleaf Forests)
Climate Koeppen:Dfc (Subarctic: severe winter, no dry season, cool summer)
Mean Annual Temperature (degrees C):0.34
Mean Annual Precipitation (mm):429
Data Products: AmeriFlux BASE Dataset
FLUXNET2015 Dataset
FLUXNET LaThuile Dataset
Data Availability: AmeriFlux BASE:   15 years (Duration: 1996 - 2010)
FLUXNET2015:   15 years (Duration: 1996 - 2010)
FLUXNET LaThuile:   9 years (Duration: 1997 - 2005)
Data Downloads to Date: AmeriFlux BASE:   110 unique downloads
FLUXNET2015:   111 unique downloads
FLUXNET LaThuile:   79 unique downloads
Description:53.62889° N, 106.19779° W, elabation of 600.63 m,BOREAS 1994, 1996, BERMS climate and flux measurements began Dec. 1996
Site image(s):
For additional AmeriFlux site images, see the Web site gallery

Publications relevant to understanding the site
A. G. Barr; T. J. Griffis; T. A. Black; X. Lee; R. M. Staebler; J. D. Fuentes; Z. Chen; K. Morgenstern. 2002. Comparing the carbon budgets of boreal and temperate deciduous forest standsCanadian Journal of Forest Research-Revue Canadienne De Recherche Forestiere. 32:5, 813-822. Reference
B. Bond-Lamberty; C. K. Wang; S. T. Gower. 2004. A global relationship between the heterotrophic and autotrophic components of soil respiration?Global Change Biology. 10:10, 1756-1766. Reference
Barr, A.G., Black, T.A., Hogg, E.H., Kljun, N., Morgenstern, K., Nesic, Z. 2004. Inter-annual variability in the leaf area index of a boreal aspen-hazelnut forest in relation to net ecosystem production. Agric. For. Meteorol. 126: 237–255. Reference
Blanken, P.D., Black. T.A., Yang, P.C., Neumann, H.H., Nesic, Z., Staebler, R., den Hartog, G., Novak, M.D., Lee, X. 1997. Energy balance and canopy conductance of a boreal aspen forest: Partitioning overstory and understory components. Journal of Geophysical Research. 102: 28915-28927. Reference
C. J. Nichol; K. F. Huemmrich; T. A. Black; P. G. Jarvis; C. L. Walthall; J. Grace; F. G. Hall. 2000. Remote sensing of photosynthetic-light-use efficiency of boreal forestAgricultural and Forest Meteorology. 101:2-3, 131-142. Reference
Chen, J.M.; Govind, A.; Sonnentag, O.; Zhang, Y.; Barr, A.; Amiro, B. 2006. Leaf area index measurements at Fluxnet Canada forest sites. Agric. For. Meteorol. 140, 257-268. Reference
E. H. Hogg; P. A. Hurdle. 1997. Sap flow in trembling aspen: implications for stomatal responses to vapor pressure deficitTree Physiology. 17:8-9, 501-509. Reference
H. A. Margolis; M. G. Ryan. 1997. A physiological basis for biosphere-atmosphere interactions in the boreal forest: an overviewTree Physiology. 17:8-9, 491-499. Reference
J. M. Chen; W. M. Ju; J. Cihlar; D. Price; J. Liu; W. J. Chen; J. J. Pan; A. Black; A. Barr. 2003. Spatial distribution of carbon sources and sinks in Canada's forestsTellus Series B-Chemical and Physical Meteorology. 55:2, 622-641. Reference
J. P. Gastellu-Etchegorry; P. Guillevic; F. Zagolski; V. Demarez; V. Trichon; D. Deering; Leroy M.. 1999. Modeling BRF and Radiation Regime of Boreal and Tropical Forest: I. BRFRemote Sensing of Environment. 68, 281-316. Reference
J. R. Brooks; L. B. Flanagan; G. T. Varney; J. R. Ehleringer. 1997. Vertical gradients in photosynthetic gas exchange characteristics and refixation of respired CO2 within boreal forest canopiesTree Physiology. 17:1, 1. Reference
J. S. Kimball; P. E. Thornton; M. A. White; S. W. Running. 1997. Simulating forest productivity and surface-atmosphere carbon exchange in the BOREAS study regionTree Physiology. 17:8-9, 589. Reference
L. H. Gu; E. M. Falge; T. Boden; D. D. Baldocchi; T. A. Black; S. R. Saleska; T. Suni; S. B. Verma; T. Vesala; S. C. Wofsy; L. K. Xu. 2005. Objective threshold determination for nighttime eddy flux filteringAgricultural and Forest Meteorology. 128:3-4, 179-197. Reference
L. H. Gu; H. H. Shugart; J. D. Fuentes; T. A. Black; S. R. Shewchuk. 1999. Micrometeorology, biophysical exchanges and NEE decomposition in a two-story boreal forest - development and test of an integrated modelAgricultural and Forest Meteorology. 94:2, 123. Reference
L. Mahrt; D. Vickers. 2002. Relationship of area-averaged carbon dioxide and water vapour fluxes to atmospheric variablesAgricultural and Forest Meteorology. 112:3-4, 195-202. Reference
L. Mahrt; X. H. Lee; A. Black; H. Neumann; R. M. Staebler. 2000. Nocturnal mixing in a forest subcanopyAgricultural and Forest Meteorology. 101:1, 67-78. Reference
M. B. Lavigne; M. G. Ryan. 1997. Growth and maintenance respiration rates of aspen, black spruce and jack pine stems at northern and southern BOREAS sitesTree Physiology. 17:8-9, 543-551. Reference
M. Lerdau; M. Litvak; P. Palmer; R. Monson. 1997. Controls over monoterpene emissions from boreal forest conifersTree Physiology. 17:8-9, 563-569. Reference
P. D. Blanken; T. A. Black; H. H. Neumann; G. den Hartog; P. C. Yang; Z. Nesic; X. Lee. 2001. The seasonal water and energy exchange above and within a boreal aspen forestJournal of Hydrology. 245:1-4, 118-136. Reference
P. Guillevic; J. P. Gastellu-Etchegorry. 1999. Modeling BRF and Radiation Regime of Boreal and Tropical Forest: II. PAR RegimeRemote Sensing of Environment. 68, 317-340. Reference
R. F. Grant; T. A. Black; G. den Hartog; J. A. Berry; H. H. Neumann; P. D. Blanken; P. C. Yang; C. Russell; I. A. Nalder. 1999. Diurnal and annual exchanges of mass and energy between an aspen-hazelnut forest and the atmosphere: Testing the mathematical model Ecosys with data from the BOREAS experimentJournal of Geophysical Research-Atmospheres. 104:D22, 27699-27717. Reference
R. Nakamura; L. Mahrt. 2001. Similarity theory for local and spatially averaged momentum fluxesAgricultural and Forest Meteorology. 108:4, 265-279. Reference
S. J. Steele; S. T. Gower; J. G. Vogel; J. M. Norman. 1997. Root mass, net primary production and turnover in aspen, jack pine and black spruce forests in Saskatchewan and Manitoba, CanadaTree Physiology. 17:8-9, 577. Reference
STEPHANE PONTON; LAWRENCE B. FLANAGAN; KARRIN P. ALSTAD; BRUCE G. JOHNSON; KAI MORGENSTERN; NATASCHA KLJUN; T. ANDREW BLACK; ALAN G. BARR. 2006. Comparison of ecosystem water-use efficiency among Douglas-fir forest, aspen forest and grassland using eddy covariance and carbon isotope techniquesGlobal Change Biology. 12:2, 294-310. Reference
T. J. Griffis; T. A. Black; D. Gaumont-Guay; G. B. Drewitt; Z. Nesic; A. G. Barr; K. Morgenstern; N. Kljun. 2004. Seasonal variation and partitioning of ecosystem respiration in a southern boreal aspen forestAgricultural and Forest Meteorology. 125:3-4, 207-223. Reference
T. J. Griffis; T. A. Black; K. Morgenstern; A. G. Barr; Z. Nesic; G. B. Drewitt; D. Gaumont-Guay; J. H. McCaughey. 2003. Ecophysiological controls on the carbon balances of three southern boreal forestsAgricultural and Forest Meteorology. 117:1-2, 53-71. Reference
W. J. Chen; T. A. Black; P. C. Yang; A. G. Barr; H. H. Neumann; Z. Nesic; P. D. Blanken; M. D. Novak; J. Eley; R. J. Ketler; A. Cuenca. 1999. Effects of climatic variability on the annual carbon sequestration by a boreal aspen forestGlobal Change Biology. 5:1, 41-53. Reference

These pages show the current information available at about this tower.
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