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In-Young Yeo, Steven I. Gordon, and Jean-Michel Guldmann

land allocation on surface water bodies. Applications of optimization techniques to water resource problems have mostly focused on point source pollution control and the development of efficient regional water resource plans meeting water quality standards, including 1) the determination of the capacity and location of water treatment facilities, 2) the choice of pollution abatement techniques, and 3) the design of piping network systems ( Deiniger and Su, 1973 ; McNamara, 1976 ; Graves et al

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Martin-Pierre Lavigne, Alain N. Rousseau, Richard Turcotte, Anne-Marie Laroche, Jean-Pierre Fortin, and Jean-Pierre Villeneuve

'aide d'un Système Informatisé (GIBSI), an integrated modeling and management system ( Rousseau et al., 2000a ; Rousseau et al., 2000b ; Villeneuve et al., 1998 ). By means of simulation models and management modules, GIBSI allows for the simulation of the impact of detailed management scenarios of dams, land use, agricultural diffuse pollution, and point source discharges on water quantity and quality of a watershed river network. A data pre- and postprocessing system manages relations between the

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Deborah A. McGrath, Jonathan P. Evans, C. Ken Smith, David G. Haskell, Neil W. Pelkey, Robert R. Gottfried, Charles D. Brockett, Matthew D. Lane, and E. Douglass Williams

point to construct meaningful rarefaction curves, so we compared the number of species at each point. We measured evenness by calculating the probability of interspecific encounter for each transect and for data pooled within each habitat class. This measure of evenness controls for variation in the number of individuals sampled. Evenness is a measure of the extent to which the bird community is dominated by a few abundant species. Such domination results in low evenness; a high evenness community

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Christopher Potter, Pusheng Zhang, Steven Klooster, Vanessa Genovese, Shashi Shekhar, and Vipin Kumar

historical gridded PREC and PET climate data for the Colorado (Arizona) (site A) and the Columbia (site B) subbasins are not of the quality required to detect localized climate controls over DIS rates. 5.3. Potential impacts of land use on discharge rates We hypothesize that the weak teleconnection of any CI with historical DIS rates in the remaining 17 major river basins means that there may have been important land/water use controls by human populations in these drainage basins, which have been

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