Nutrient levels and biostimulation in the lower Colorado River/reservoir system
AuthorNoyes, Thomas Kelly
Water quality -- Colorado River (Colo.-Mexico)
Eutrophication -- Colorado River (Colo.-Mexico)
Committee ChairInce, Simon
MetadataShow full item record
PublisherThe University of Arizona.
RightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
AbstractThe lower Colorado River is a very important resource for the southwestern U.S. Previously, biostimulation and the problems associated with it had not been studied from a basin wide approach. This research had three goals in mind while investigating biostimulation on the lower Colorado. First, a data base was assembled containing 843 cases, each of which included from 1 to 7 limnological parameters. Second, a simple model was formulated, for managing biostimulation, which predicts total phosphorus and chlorophyll a concentrations. Third, statistical analyses of the data base provided an indication of the present state of the river. N:P ratios inferred that the system was phosphorus limited. Trophic states were generally in the oligo-mesotrophic range, except around Imperial Reservoir, where they were meso-eutrophic. The results of this study suggest that the lower Colorado River/Reservoir system is not currently threatened with biostimulation problems.
Degree ProgramHydrology and Water Resources