Patrick Omoregie Isibor, Ph.D., is a specialist in Pollution Studies and Ecotoxicology and a Lecturer/ Researcher in the Department of Biological Sciences at Covenant University. He received his Ph.D. and M.Sc. in Pollution Studies & Ecotoxicology (Environmental Quality Management) from the University of Benin and a B.Sc. in Zoology from Ambrose Alli University. His research interests include ecotoxicology, hydrobiology, bioaccumulation, biosequestration, biodiversity conservation, and aquatic ecology. He is a member of the Association for Environmental Impact Assessment of Nigeria (AEIAN), the International Association of Risk and Compliance Professionals (IARCP), and the African Society for Toxicological Sciences (ASTS). He is currently an Editor for the African Journal of Health, Safety, and Environment, and a reviewer for several reputable international journals. He is also an Editor for various titles published by a reputed publishing house. He is the Book Series Editor of “Biotechnology for Sustainable Ecosystems in Sub-Saharan Africa: The One Health Approach to a Circular Economy”; a book series hosted by Taylor & Francis.

• 1. Introduction to Freshwater Ecosystems and the One Health Framework 2. Principles of Ecotoxicology in Aquatic Systems 3. Contaminant Classes, Sources, and Pathways in Freshwater Environments 4. Linking Ecosystem Health to Human and Animal Health 5. Ecological Risk Assessment and Regulatory Frameworks 6. Biological Indicators and Bioassessment Protocols 7. Benthic Macroinvertebrates as Bioindicators of Pollution 8. Fish Biomarkers in Toxicity Evaluation 9. Periphyton, Phytoplankton, and Biofilm Responses to Contaminants 10. Microbial Communities in Pollution Monitoring 11. Mechanisms of Pollution Tolerance in Aquatic Organisms 12. Adaptive Responses and Evolutionary Implications 13. Community-Level Metrics: Diversity, Abundance, and Functional Traits 14. Sublethal Effects of Xenobiotics and Endocrine Disruption in Freshwater Species 15. Restoration Ecology and Pollution Mitigation Strategies 16. Community-Based Monitoring and Transboundary Water Management 17. Advancing the One Health Paradigm through Integrated Biomonitoring

Patrick Omoregie Isibor, Ph.D., is a specialist in Pollution Studies and Ecotoxicology and a Lecturer/ Researcher in the Department of Biological Sciences at Covenant University. He received his Ph.D. and M.Sc. in Pollution Studies & Ecotoxicology (Environmental Quality Management) from the University of Benin and a B.Sc. in Zoology from Ambrose Alli University. His research interests include ecotoxicology, hydrobiology, bioaccumulation, biosequestration, biodiversity conservation, and aquatic ecology. He is a member of the Association for Environmental Impact Assessment of Nigeria (AEIAN), the International Association of Risk and Compliance Professionals (IARCP), and the African Society for Toxicological Sciences (ASTS). He is currently an Editor for the African Journal of Health, Safety, and Environment, and a reviewer for several reputable international journals. He is also an Editor for various titles published by a reputed publishing house. He is the Book Series Editor of “Biotechnology for Sustainable Ecosystems in Sub-Saharan Africa: The One Health Approach to a Circular Economy”; a book series hosted by Taylor & Francis.

• 1. Introduction to Freshwater Ecosystems and the One Health Framework 2. Principles of Ecotoxicology in Aquatic Systems 3. Contaminant Classes, Sources, and Pathways in Freshwater Environments 4. Linking Ecosystem Health to Human and Animal Health 5. Ecological Risk Assessment and Regulatory Frameworks 6. Biological Indicators and Bioassessment Protocols 7. Benthic Macroinvertebrates as Bioindicators of Pollution 8. Fish Biomarkers in Toxicity Evaluation 9. Periphyton, Phytoplankton, and Biofilm Responses to Contaminants 10. Microbial Communities in Pollution Monitoring 11. Mechanisms of Pollution Tolerance in Aquatic Organisms 12. Adaptive Responses and Evolutionary Implications 13. Community-Level Metrics: Diversity, Abundance, and Functional Traits 14. Sublethal Effects of Xenobiotics and Endocrine Disruption in Freshwater Species 15. Restoration Ecology and Pollution Mitigation Strategies 16. Community-Based Monitoring and Transboundary Water Management 17. Advancing the One Health Paradigm through Integrated Biomonitoring

Patrick Omoregie Isibor, Ph.D., is a specialist in Pollution Studies and Ecotoxicology and a Lecturer/ Researcher in the Department of Biological Sciences at Covenant University. He received his Ph.D. and M.Sc. in Pollution Studies & Ecotoxicology (Environmental Quality Management) from the University of Benin and a B.Sc. in Zoology from Ambrose Alli University. His research interests include ecotoxicology, hydrobiology, bioaccumulation, biosequestration, biodiversity conservation, and aquatic ecology. He is a member of the Association for Environmental Impact Assessment of Nigeria (AEIAN), the International Association of Risk and Compliance Professionals (IARCP), and the African Society for Toxicological Sciences (ASTS). He is currently an Editor for the African Journal of Health, Safety, and Environment, and a reviewer for several reputable international journals. He is also an Editor for various titles published by a reputed publishing house. He is the Book Series Editor of “Biotechnology for Sustainable Ecosystems in Sub-Saharan Africa: The One Health Approach to a Circular Economy”; a book series hosted by Taylor & Francis.

• 1. Introduction to Freshwater Ecosystems and the One Health Framework 2. Principles of Ecotoxicology in Aquatic Systems 3. Contaminant Classes, Sources, and Pathways in Freshwater Environments 4. Linking Ecosystem Health to Human and Animal Health 5. Ecological Risk Assessment and Regulatory Frameworks 6. Biological Indicators and Bioassessment Protocols 7. Benthic Macroinvertebrates as Bioindicators of Pollution 8. Fish Biomarkers in Toxicity Evaluation 9. Periphyton, Phytoplankton, and Biofilm Responses to Contaminants 10. Microbial Communities in Pollution Monitoring 11. Mechanisms of Pollution Tolerance in Aquatic Organisms 12. Adaptive Responses and Evolutionary Implications 13. Community-Level Metrics: Diversity, Abundance, and Functional Traits 14. Sublethal Effects of Xenobiotics and Endocrine Disruption in Freshwater Species 15. Restoration Ecology and Pollution Mitigation Strategies 16. Community-Based Monitoring and Transboundary Water Management 17. Advancing the One Health Paradigm through Integrated Biomonitoring