The first publication to provide strategies for managing nutrients in the context of changing environmental biology, this text describes in detail a case study resulting from a large-scale research project in the Corn Belt and Great Plains region of America.

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.

Presents new perspectives on linkages between ecological health, biological indicators, and nutrient chemical concentrations Includes species optima based on parameter specific tolerance and sensitivity correlations with nutrient concentration Includes new state of the art diagnostic tools that can be used to evaluate the magnitude and extent of nutrient impacts? Includes supplementary material: sn.pub/extras

Inhalt

1. Introduction.- 2. Methods.- 3. Results.- 4. Discussion.- 5. Conclusion.