Agricultural Chemicals And The Environment -- Contents -- Fertilizers and Nitrate Leaching -- 1 The Nitrate Problem -- 2 The Contribution of Fertilizer to the Nitrate Problem -- 3 The Contribution of Factors other than Nitrogen Fertilizers to the Nitrate Problem -- 4 What Can Be Said about the Long-term Effects of Nitrogen Fertilizer? -- 5 Conclusions -- Eutrophication of Natural Waters and Toxic Algal Blooms -- 1 Introduction -- 2 The Role of Agricultural Fertilizers in Aquatic Production -- 3 The Factors Controlling Algal Blooms -- 4 Sources of Nutrients -- 5 Control of Eutrophication and Toxic Blooms -- 6 Management Framework -- 7 Conclusions -- Impact of Agricultural Pesticides on Water Quality -- 1 Introduction -- 2 Legislation -- 3 Pesticides and the Aquatic Environment -- 4 Recognition of Pesticide Pollution -- 5 The Harmonized Monitoring Scheme -- 6 Impact on the North Sea -- 7 Impact on Drinking Water Sources -- 8 Impact on Estuaries and Coastal Waters -- 9 Recent Pesticide Developments -- 10 Environmental Significance -- 11 Monitoring -- 12 The Future -- 13 Conclusion -- Agricultural Nitrogen and Emissions to the Atmosphere -- 1 Introduction -- 2 Ammonia -- 3 Emissions of NO and N2O from Agricultural Soils -- 4 Conclusions -- Drugs and Dietary Additives, Their Use in Animal Production and Potential Environmental Consequences -- 1 Introduction -- 2 Commercial Implications of the Use of Drugs and Dietary Additives -- 3 Compounds Encountered by Animals -- 4 Effects in Animals -- 5 Environmental Effects -- 6 The Gut Microbial Flora -- 7 Gastrointestinal Microorganisms and Feeding Strategy -- 8 Microbial Fermentation, CO2 and CH4 Formation -- 9 Methanogenesis from Acetate, Residence Time and Size of Ruminants -- 10 Methane and Ammonia Oxidation.

11 Microbial Transformations and Interactions with the Xenobiotic Metabolizing Enzyme (XME) System -- 12 Toxic Constituents of Plants -- 13 Antibiotics and Antibiotic Resistance -- 14 Conclusions -- 15 Acknowledgements -- Detection, Analysis and Risk Assessment of Cyanobacterial Toxins -- 1 Introduction -- 2 Production and Properties of Cyanobacterial Toxins -- 3 Detection and Analysis of Cyanobacterial Toxins -- 4 Risk Assessment of Cyanobacterial Toxins -- Subject Index.