The percid fishes (or perch family) comprise many species including the perch, pikeperch, yellow perch, walleye and the darters. These species are of great ecological and economic importance, being important components of the freshwater ecosystem and recreational and commercial fisheries. Percid Fishes covers aspects such as systematics, morphology, biology, ecology, diseases and parasites and the economic importance of percid fisheries. Special emphasis is placed within the book on the complex relationship between this family of fishes and their environment and how they respond to perturbations, especially those induced by humans. The author, John Craig who has a great deal of experience working on these fishes in many of the countries in which they occur, has drawn together an extremely important book which provides a unique, comprehensive and indispensable review of this most significant group of fish.

The essential introduction to computational science—now fully updated and expanded Computational science is an exciting new field at the intersection of the sciences, computer science, and mathematics because much scientific investigation now involves computing as well as theory and experiment. This textbook provides students with a versatile and accessible introduction to the subject. It assumes only a background in high school algebra, enables instructors to follow tailored pathways through the material, and is the only textbook of its kind designed specifically for an introductory course in the computational science and engineering curriculum. While the text itself is generic, an accompanying website offers tutorials and files in a variety of software packages. This fully updated and expanded edition features two new chapters on agent-based simulations and modeling with matrices, ten new project modules, and an additional module on diffusion. Besides increased treatment of high-performance computing and its applications, the book also includes additional quick review questions with answers, exercises, and individual and team projects. The only introductory textbook of its kind—now fully updated and expanded Features two new chapters on agent-based simulations and modeling with matrices Increased coverage of high-performance computing and its applications Includes additional modules, review questions, exercises, and projects An online instructor's manual with exercise answers, selected project solutions, and a test bank and solutions (available only to professors) An online illustration package is available to professors

For most British natural historians, there is one vertebrate order that could well be said to be “out of sight, out of mind.” This is our freshwater fishes, familiar principally only to anglers, those concerned with managing rivers and other waterbodies, and a few research scientists. The results of this project, which ran from 1998-2002, are published here in the form of comprehensive 10km square dot-distribution maps for the 54 species inhabiting England, Scotland, Wales, the Channel Islands and the Isle of Man. These indicate the vulnerability of several of our native British species. Following a wide-ranging introductory chapter, and further chapters on distribution and the history of the project, Chapter 4 comprises the individual species accounts under the headings: Description; Biology and behaviour; Habitat; Distribution in Britain; World distribution; Status; Hybrids and related species; and a final section of the relationship of each species with Man. In addition to a map, each species is illustrated by fine lithographs taken from Francis Day's famous 19th century work, skilfully supplemented by Michael J. Roberts for those species unknown to Day. Chapter 5 covers conservation and management of freshwater fishes and is followed by four Appendices relating to (1) Publications; (2 & 3) Legislation; and (4) Selected websites relating to environmental protection, biodiversity information and fish conservation. The book concludes with a Glossary; a comprehensive Bibliography; and an Index. In his Foreword, Sir John Burnett, Chairman of the National Biodiversity Network Trust, commends this books as “a unique reliable source of clear and comprehensive information that is pleasing both to the mind and to the eyes” and expresses the hope that “it will lead to ... the more effective conservation of this ‘alien race’ in our midst.” A joint project of the Environment Agency, the Centre for Ecology and Hydrology and the Joint Nature Conservation Committee; written by a team of 38 authors and compiled and edited by Cynthia Davies (CEH), Jonathan Shelley (EA), Paul Harding (Biological Records Centre, CEH), Ian McLean (JNCC), Ross Gardiner (Fisheries Research Services) and Graeme Peirson (EA).