The book is comprised of practical environmental and socioeconomic information which can be used in planning and implementing CEAM studies. Such information has been compiled from CEAM practices in the USA, Canada, Australia, European, and many other countries. Considerable information on step-wise CEAM processes, along with connector methods and resource-related methods and tools for predicting, mitigating, and managing cumulative effects on key Valued Ecosystem Components (VECs), is included.

Risk assessment has become a dominant public policy tool for making choices, based on limited resources, to protect public health and the environment. It has been instrumental to the mission of the U.S. Environmental Protection Agency (EPA) as well as other federal agencies in evaluating public health concerns, informing regulatory and technological decisions, prioritizing research needs and funding, and in developing approaches for cost-benefit analysis. However, risk assessment is at a crossroads. Despite advances in the field, risk assessment faces a number of significant challenges including lengthy delays in making complex decisions; lack of data leading to significant uncertainty in risk assessments; and many chemicals in the marketplace that have not been evaluated and emerging agents requiring assessment. Science and Decisions makes practical scientific and technical recommendations to address these challenges. This book is a complement to the widely used 1983 National Academies book, Risk Assessment in the Federal Government (also known as the Red Book). The earlier book established a framework for the concepts and conduct of risk assessment that has been adopted by numerous expert committees, regulatory agencies, and public health institutions. The new book embeds these concepts within a broader framework for risk-based decision-making. Together, these are essential references for those working in the regulatory and public health fields.

Marine mammals face a large array of stressors, including loss of habitat, chemical and noise pollution, and bycatch in fishing, which alone kills hundreds of thousands of marine mammals per year globally. To discern the factors contributing to population trends, scientists must consider the full complement of threats faced by marine mammals. Once populations or ecosystems are found to be at risk of adverse impacts, it is critical to decide which combination of stressors to reduce to bring the population or ecosystem into a more favorable state. Assessing all stressors facing a marine mammal population also provides the environmental context for evaluating whether an additional activity could threaten it. Approaches to Understanding the Cumulative Effects of Stressors on Marine Mammals builds upon previous reports to assess current methodologies used for evaluating cumulative effects and identify new approaches that could improve these assessments. This review focuses on ways to quantify exposure-related changes in the behavior, health, or body condition of individual marine mammals and makes recommendations for future research initiatives.

Currently the writing on the subject is limited and comprises, for the most part, guidance documents and completed assessments.

First Published in 1994. Routledge is an imprint of Taylor & Francis, an informa company.

Cumulative effects of multiple environmental perturbations of natural and social systems were identified as needing study because of a lack of a clear and unambiguous definition of cumulative effects assessment, despite the widespread recognition of its importance. There is increasing concern that neither scientists nor institutions work at the temporal and spatial scales needed for the assessment of cumulative effects. The workshop explored these issues, identified current scientific and management techniques of dealing with cumulative effects, and to recommended research and management priorities for improving the management of cumulative effects.