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Dr. John Tremblay

Dr. Tremblay is a research scientist and section head within DFO’s Science Branch at the Bedford Institute of Oceanography. He received degrees in Marine Biology from the University of Guelph prior to his permanent move to Nova Scotia. His early work was on zooplankton community structure and production on the Scotian Shelf. With DFO since 1983, he began field studies of sea scallop larvae in nearshore and offshore areas. His Ph.D. thesis (1992, Dalhousie University ) characterized the vertical and horizontal distribution of sea scallop larvae on Georges Bank, and lead to a joint Canada-U.S.A. GLOBEC project that modeled larval dispersal on the Bank.

Beginning in 1993 Dr. Tremblay began to focus more on the population biology of large decapod crustaceans. He has published papers on lobster growth, movement and catchability, and on the factors affecting lobster and crab abundance trends. His catchability work has involved local fishing vessels coupled with extensive use of SCUBA. Throughout this period he has provided biological advice to fishery managers and industry on lobster and crab stocks at meetings and in various technical report series.

Two ongoing projects have increased Dr. Tremblay’s interest in benthic invertebrate diversity. One project with Marine Fish Division at BIO involves identifying and measuring selected megabenthic invertebrates captured during annual trawl surveys of the Scotian Shelf. Prior to 1999 these species were not recorded and the trawl data are providing a much more complete picture of distribution. A second project with the Eskasoni First Nation investigates the biological and physical environment associated with lobsters and crabs in the Bras d’Or Lakes. The project is characterizing bottom habitat with an underwater video system and estimating abundance of various species via SCUBA. The project will be greatly enhanced by habitat maps under development by Natural Resources Canada from multibeam and sidescan sonar.

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