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Nutrient Indicator Models for Determining Biologically Relevant
Levels: A case study based on the Corn Belt and Northern Great
Plain Nutrient Ecoregion is the first book to provide answers to
the management of nutrients based on changes in biological
communities. The text describes a case study that is the result of
a large scale project in the Corn Belt and Great Plains Nutrient
Ecoregion. This study is the first to identify relationships
between fish assemblages and nutrient concentrations by Nitrogen
species. Species optima based on sensitivity and tolerance to
nutrients is modeled. Nutrient Biotic indices calibrated for
application are based on the results of years of biological
indicator development. Test response intervals and Shift response
intervals are formulated and validated against relevant biological
assemblage shifts. This case study is the first to suggest
recommended values for the nitrogen and phosphorus cycle with
identifiable shifts caused in biological assemblages. This will
provide watershed and environmental managers with the information
needed to manage the inputs into the world's dead zones. "
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