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Crayfish --- Crawdaddies --- Crawdads --- Crawfish --- Crawfishes --- Crayfishes --- Decapoda (Crustacea) --- Astacology

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Water quality biological assessment. --- Freshwater fishes --- Effect of water quality on

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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 sensitvity 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.

Agriculture. --- Environmental sciences. --- Nutrient pollution of water -- Indiana. --- Public Health --- Civil & Environmental Engineering --- Health & Biological Sciences --- Engineering & Applied Sciences --- Environmental Health --- Environmental Engineering --- Nutrient pollution of water --- Water --- Pollution --- Lakes --- Nutrient pollution of rivers, lakes, etc. --- Rivers --- Nutrient pollution --- Environment. --- Applied ecology. --- Environmental management. --- Environmental health. --- Ecotoxicology. --- Environmental Health. --- Applied Ecology. --- Environmental Management. --- Hydrology --- Environmental Medicine. --- Environmental toxicology. --- Farming --- Husbandry --- Industrial arts --- Life sciences --- Food supply --- Land use, Rural --- Environmental stewardship --- Stewardship, Environmental --- Environmental sciences --- Management --- Ecotoxicology --- Pollutants --- Environmental health --- Toxicology --- Ecology --- Environmental protection --- Nature conservation --- Environmental quality --- Health --- Health ecology --- Public health --- Environmental engineering --- Health risk assessment --- Health aspects --- Environmental aspects