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Products /Reports <br />FY2010 <br />• ChubIBM.exe computer program, narrative review for GCMRC fish scientists on probable <br />biases and precision of future population estimates (Walters and others). <br />• Spreadsheets for use by GCMRC scientists in checking ASMR results from existing assessment <br />programs, stock assessment report providing abundance trend estimates for sucker species <br />(Walters and others). <br />• Revised flow and suspended- sediment submodel of the GCEM, including the recently innovated <br />"shifting rating curve" for sand transport that will be reported by Wright and others (manuscript <br />currently in preparation). This work is being integrated with ongoing modeling research funded <br />in FY2010 (Wright and Korman). <br />• Ecopath with Ecosim Access database (mdb) with improved models and historical forcing data, <br />including forcing time series data from updated GCEM, narrative report sections for use by <br />GCMRC scientists in preparation of peer- reviewed papers on findings from the EwE models and <br />GCEM /EwE model linkage (Walters and others). <br />• Senior Ecologist (Walters) will lead a science workshop for GCMRC scientists and cooperators <br />in February/March 2010 to evaluate ecosystem model performance and produce a consensus <br />scientific report on role of trophic interactions (food base changes, predator -prey interactions) in <br />causing recent changes in native and nonnative fish abundances. <br />• Oral presentation (Walters) of the consensus ecosystem response report in a workshop /retreat for <br />GCDAMP stakeholders (TWG, AMWG) in April 2010 (proposed venue - Saguaro Lake Ranch, <br />Ariz.). <br />• Oral presentation (Wright and Korman) to TWG on progress of physical submodel upgrade <br />(shifting sand rating curve model), along with simulations of suspended- sediment concentrations <br />between Lees Ferry and Diamond Creek (output delivered to Walters for use in EwE model) <br />during fall /winter 2009 -10. <br />• Results of isotopic analyses of flannelmouth sucker otoliths from State University of New York <br />laboratory. <br />FY2011 <br />Submission of refereed journal article with Josh Korman on "Surprise and opportunity in Grand <br />Canyon ecosystem management" <br />Contributions by Senior Ecologist and co- investigators to the high -flow experimental synthesis <br />(proposed as report by Schmidt and others) relating to the sediment and biological responses <br />associated with the 1996, 2004 and 2008 experimental releases. <br />• Multi- attribute tradeoff analysis (MATA) workshop deferred in FY2011 <br />Budget <br />FY2010: $239,986 <br />FY2011: $148,945 <br />35 <br />