C. Groot is an ethologist who has studied and worked in the field of fish behaviour in the Netherlands and Canada. At the Department of Fisheries and Oceans, Pacific Biological Station in Nanaimo, British Columbia, his studies have centred on the migration of Pacific salmon, particularly on how they find their way during long-distance migrations, and on salmonid enhancement research. Recently, he has been appointed Climate Change Co-ordinator to examine the possible impacts that global climate changes can have on the fisheries resources of western Canada. He has also been a visiting Professor at Simon Fraser University in Burnaby, B.C, and at the Bamfield Marine Station. L Margolis is the senior scientist at the Pacific Biological Station, in Nanaimo and an adjunct Professor at Simon Fraser University. Actively engaged for more than thirty-five years in research on Pacific salmon biology, his work has focused on stock discrimination, ocean migrations and distribution, and other aspects of the sea life of salmon. He is the author of over 140 research and review articles and editor of five special volumes on fish parasitology and fisheries science. He is a fellow of the Royal Society of Canada and in 1990 he was appointed an Officer of the Order of Canada.

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