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.

"Level 2 Physical Education Learning Workbook covers the six most popular Achievement Standards 2.1, 2.2, 2.3, 2.4, 2.5 and 2.6 for NCEA Level 2 Physical Education. All are internally assessed. These Standards are based on The New Zealand Curriculum . Each chapter describes an Achievement Standard, states its title and number of credits, and features: - sections of theory, with illustrations - practical examples - activities to reinforce learning. Answers in the back of the book provide students with guided help, especially where answers have a subjective component. The book can be used to complement a class programme or by students undertaking independent work to increase their skills. The concise notes and workbook format keep the student's work in one place as a useful resource. This book can be used with Level 2 Physical Education Study Guide"--Back cover.

"This new workbook by a leading Accounting author covers the NCEA Level 1 Accounting Achievement Standards 1.1 to 1.7 implemented in 2011. It features brief, clearly explained theory, examples and numerous sets of exercises for student practice. There are brief answers in the back with fully worked answers available free online or as a separate $7.50 booklet. Use throughout the year to support classroom work, to help with internal assessments and to revise for end-of-year exams." -- Publisher's website