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Richard Waring 1 Nicholas Coops 2 Thomas Hilker 3 Wendy Peterman 4 1 Oregon State University

I R S S. Mapping of stress on native tree species across western U.S.A. & Canada: interpretation of climatically-induced changes using a physiologically-based approach. Richard Waring 1 Nicholas Coops 2 Thomas Hilker 3 Wendy Peterman 4 1 Oregon State University

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Richard Waring 1 Nicholas Coops 2 Thomas Hilker 3 Wendy Peterman 4 1 Oregon State University

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  1. I R S S Mapping of stress on native tree species across western U.S.A. & Canada: interpretation of climatically-induced changes using a physiologically-based approach Richard Waring1 Nicholas Coops2 Thomas Hilker3 Wendy Peterman4 1 Oregon State University 2 University of British Columbia 3Goddard Space Flight Center 4Conservation Biology Institute

  2. Recent Mortality in the Southwest

  3. Pinyon pine mortality peaked in 2003-2004 across the Southwest From U.S. Forest Service aerial photographic surveys . Peterman et al. 2012. Manuscript revised for Ecohydrology

  4. 1:24,000 scale soil classification indicates tree mortality in 2003-2004 was concentrated on soils with < 100 mm of water storage capacity . NRCS Soil Geographic Database Peterman et al. 2012. Manuscript revised for Ecohydrology

  5. Can predict how tree mortality varies spatially following a drought with knowledge of differences in soil water storage capacity . Peterman et al. 2012. Manuscript revised for Ecohydrology

  6. Process-based modeling with 3-PG confirmed that unusually intense drought would stress pinyon pine on shallow soils prior to 2003-2004 . Peterman et al. 2012. Manuscript revised for Ecohydrology

  7. Approach to mapping soil properties Default at 200 mm ASWC Default at 50% max. Fert. 3PG Predicted LAI MODIS LAI Differences used to adjust soil fertility and soil water holding capacity

  8. Solved simultaneously, or set ASWC =170 mm Process-model derived Fertility Ranking at 1 km2 1:5,000,000 scale Coops, Hilker & Waring .2011. in preparation RS & E

  9. Solved simultaneously or set FR =0.6 if MODIS LAI is < 3.0 m2 m-2 Process-model derived Available Soil Water Holding Capacity at 1 km2 1:5,000,000 scale Coops, Hilker & Waring2011. in preparation, RS & E

  10. Conclusions Need soil classification at 1 km2 or better : To predict where tree mortality will occur following drought To predict variation in productivity under similar climates To predict the effects of rising CO2 on growth Approach to mapping soil properties : Compare difference in LAI predicted by 3-PG model using default soil values with LAI from MODIS satellite imagery Run model to match MODIS LAI for soil fertility first Run model based on est. of soil fertility to obtain map of available soil water storage capacity .

  11. Contact Information Waring, Richard <richard.waring@oregonstate.edu> http://www.fsl.orst.edu/~waring Coops, Nicholas <nicholas.coops@ubc.ca> Project website: http://www.pnwspecieschange.info/

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