Edited by experts at the leading edge of the development of causal assessment methods for more than two decades, Ecological Causal Assessment gives insight and expert guidance on how to identify cause-effect relationships in environmental systems. The book discusses the importance of asking the fundamental question "Why did this effect happen?" before moving on to "How can we fix it?" The book provides a deeper understanding of different philosophical and analytical approaches, and of cognitive tendencies that can lead to errors. It describes formal processes for causal assessment that are particularly helpful when the situation is complex or contentious. It also describes how to approach the analysis of available data and to optimize collection efforts. The text then details a transparent process that helps others replicate results and can be used to convince skeptics that the true cause has been identified. Several detailed case studies show how to apply the process to streams, watersheds, and a terrestrial wildlife population. Causal assessment is a challenging, but endlessly fascinating endeavor. Success requires the persistence to figure things out and solid strategies for using the information that you have and getting more of the right kind of information that you need. This book gives you just that: the skills, knowledge, and confidence needed to successfully unravel tough environmental problems and build the knowledge base for effective management solutions.

Edited by experts at the leading edge of the development of causal assessment methods for more than two decades, Ecological Causal Assessment gives insight and expert guidance on how to identify cause-effect relationships in environmental systems. The book discusses the importance of asking the fundamental question "Why did this effect happen?" bef

Recently, environmental scientists have been required to perform a new type of assessment-ecological risk assessment. This is the first book that explains how to perform ecological risk assessments and gives assessors access to the full range of useful data, models, and conceptual approaches they need to perform an accurate assessment. It explains how ecological risk assessment relates to more familiar types of assessments. It also shows how to organize and conduct an ecological risk assessment, including defining the source, selecting endpoints, describing the relevant features of the receiving environment, estimating exposure, estimating effects, characterizing the risks, and interacting with the risk manager. Specific technical topics include finding and selecting toxicity data; statistical and mathematical models of effects on organisms, populations, and ecosystems; estimation of chemical fate parameters; modeling of chemical transport and fate; estimation of chemical uptake by organisms; and estimation, propagation, and presentation of uncertainty. Ecological Risk Assessment also covers conventional risk assessments, risk assessments for existing contamination, large scale problems, exotic organisms, and risk assessments based on environmental monitoring. Environmental assessors at regulatory agencies, consulting firms, industry, and government labs need this book for its approaches and methods for ecological risk assessment. Professors in ecology and other environmental sciences will find the book's practical preparation useful for classroom instruction. Environmental toxicologists and chemists will appreciate the discussion of the utility for risk assessment of particular toxicity tests and chemical determinations.

Understand the fundamentals of human risk assessment with this introduction and reference Human risk assessments are a precondition for virtually all industrial action or environmental regulation, all the more essential in a world where chemical and environmental hazards are becoming more abundant. These documents catalog potential environmental, toxicological, ecological, or other harms resulting from a particular hazard, from chemical spills to construction projects to dangerous workplaces. They turn on a number of variables, of which the most significant is the degree of human exposure to the hazardous agent or process. Human and Ecological Risk Assessment combines the virtues of a textbook and reference work to introduce and analyze these vital documents. Beginning with the foundational theory of human health risk assessment, it then supplies case studies and detailed analysis illustrating the practice of producing risk assessment documents. Fully updated and authored by leading authorities in the field, the result is an indispensable work. Readers of the second edition of Human and Ecological Risk Assessment will also find: Over 40 entirely new case studies reflecting the latest in risk assessment practice Detailed discussion of hazards including air emissions, contaminated food and soil, hazardous waste sites, and many more Case studies from multiple countries to reflect diverse international standards Human and Ecological Risk Assessment is ideal for professionals and advanced graduate students in toxicology, industrial hygiene, occupational medicine, environmental science, and all related subjects.

Based on the "go to" book in the field of ecological risk assessment, this shorter, principles-based, updated textbook is essential for students and new practitioners who want to understand the purposes of environmental assessments and how to achieve them. It includes environmental risks to humans as well as nonhuman populations and ecosystems, and most types of environmental assessments. Drawing upon the author’s extensive experience in the field, first as a senior research staff member in the Environmental Sciences Division at Oak Ridge Laboratory and then as science advisor in the United States Environmental Protection Agency’s National Center for Environmental Assessment, the book explains fundamental principles and basic techniques and illustrates them with example applications which carry through multiple chapters and make this book a practical and hands-on guide. Both the content and the style are inviting and approachable to different levels of students. Features Integrates human health and ecological assessments. Includes epidemiological, risk, causal, impact, and outcome assessments. Focuses on fundamental principles that are applicable in all nations and legal contexts. Employs an engaging style and draws on the author’s practical experience. Explains fundamental concepts in short chapters, making it perfect for beginners in the field. Explains the challenges and rewards of a career in environmental assessment. This book is a practical guide for senior and graduate students in environmental sciences and management, as well as new practitioners of assessment who want to understand the purposes of environmental assessments and how to achieve them.

Methods in Stream Ecology: Volume 2: Ecosystem Structure, Third Edition, provides a complete series of field and laboratory protocols in stream ecology that are ideal for teaching or conducting research. This new two-part edition is updated to reflect recent advances in the technology associated with ecological assessment of streams, including remote sensing. Volume two covers community interactions, ecosystem processes and ecosystem quality. With a student-friendly price, this new edition is key for all students and researchers in stream and freshwater ecology, freshwater biology, marine ecology and river ecology. This book is also supportive as a supplementary text for courses in watershed ecology/science, hydrology, fluvial geomorphology and landscape ecology. Methods in Stream Ecology, 3rd Edition, Volume 1: Ecosystem Structure, is also available now! - Provides a variety of exercises in each chapter - Includes detailed instructions, illustrations, formulae and data sheets for in-field research for students - Presents taxonomic keys to common stream invertebrates and algae - Includes website with tables and a links written by leading experts in stream ecology

This book goes beyond the truism that 'correlation does not imply causation' and explores the logical and methodological relationships between correlation and causation. It presents a series of statistical methods that can test, and potentially discover, cause-effect relationships between variables in situations in which it is not possible to conduct randomised or experimentally controlled experiments. Many of these methods are quite new and most are generally unknown to biologists. In addition to describing how to conduct these statistical tests, the book also puts the methods into historical context and explains when they can and cannot justifiably be used to test or discover causal claims. Written in a conversational style that minimises technical jargon, the book is aimed at practising biologists and advanced students, and assumes only a very basic knowledge of introductory statistics.

This book examines the application of fish community characteristics to evaluate the sustainability and biological integrity of freshwaters. Topics include perspectives on use of fish communities as environmental indicators in program development, collaboration, and partnership forming; influence of specific taxa on assessment of the IBI; regional applications for areas where the IBI had not previously been developed; and specific applications of the IBI developed for coldwater streams, inland lakes, Great Lakes, reservoirs, and tailwaters.

This book presents a logical system of critical appraisal, to allow readers to evaluate studies and to carry out their own studies more effectively. This system emphasizes the central importance of cause and effect relationships. Its great strength is that it is applicable to a wide range of issues, and both to intervention trials and observational studies. This system unifies the often different approaches used in epidemiology, health services research, clinical trials, and evidence-based medicine, starting from a logical consideration of cause and effect. The author's approach to the issues of study design, selection of subjects, bias, confounding, and the place of statistical methods has been praised for its clarity and interest. Systematic reviews, meta-analysis, and the applications of this logic to evidence-based medicine, knowledge-based health care, and health practice and policy are discussed. Current and often controversial examples are used, including screening for prostate cancer, publication bias in psychiatry, public health issues in developing countries, and conflicts between observational studies and randomized trials. Statistical issues are explained clearly without complex mathematics, and the most useful methods are summarized in the appendix. The final chapters give six applications of the critical appraisal of major studies: randomized trials of medical treatment and prevention, a prospective and a retrospective cohort study, a small matched case-control study, and a large case-control study. In these chapters, sections of the original papers are reproduced and the original studies placed in context by a summary of current developments.